深海平台完整稳性计算书
目录
1.主要参数 (2)
2.定义 (2)
3.计算依据 (2)
4.主要使用说明 (2)
5.重量重心估算 (3)
6.风倾力矩计算 (4)
7.进水点以及进水角 (10)
8.基本载况稳性总结表 (10)
9.静水力表 (10)
10.复原力矩计算 (11)
11.稳性校核 (12)
12.横摇周期和横摇角 (16)
1.主要参数
设计最大吃水................................11.32 m
最大排水量.................................198t
整体抗风能力...............................14 级
六边形边长..................................9 m
2.定义
1、单位定义
长度单位：米[m]
重量单位：吨[t]
角度单位：度[deg]
2、坐标轴定义
X轴：向右为正；
Y轴：向首为正；
Z轴：向上为正；
纵倾：向Y方向的倾斜；
横倾：向X方向的倾斜；
本计算书中的坐标定义见上图。
以最底层垂荡板底面为基平面，以图中的Y轴为KL线。
3.计算依据：
本平台由潜入水中的浮筒、立柱下部、两层垂荡板以及撑杆提供浮力，立柱上部露出水面，为半潜状态。
计算书参照中国船级社《海上移动平台入级规范》（2016）中对柱稳式平台的相关要求对本平台的稳性进行校核。
本计算书中的坐标系定义见上图。
本平台结构几乎对称，结构剖面关于X轴的惯性矩比Y轴略大，X方向受风面积大。
因此，Y轴方向的稳性较好。
基于以上结论，本计算书对X轴方向的稳性进行校核。
4.主要使用说明
1)本计算书对本平台的作业工况及空载载况（吃水11.24m及10.99m）的稳性进行校核，实际运营时出现吃水超出此作业工况，则应重新核算稳性，确保运营中的安全。
5.重量重心估算
5.1结构重量：
5.2平台重量：
5.4作业工况(空载)重量：
6.风倾力矩计算
6.1风力
根据《海上移动平台入级规范》（以下简称规范）第2篇第2.2.2.1节，
作用于构件上的风力按下式计算：
F=C h C S SPKN
式中：P——风压，kPa；
S——平台正浮或倾斜状态时，受风构件的正投影面积，单位m2；
C h——受风构件高度系数，可根据构件高度系数由表2.2.2.1（a) 选取，本平台构件在海平面以上高度小于15.3m，C h取1；
C S——受风构件形状系数，可根据构件形状由表2.2.2.1（b）选
取，查该表后得本平台各构件的形状系数取值如下：
6.2计算风压
根据第2篇《规范》第2.2.1.2节，风压按下式计算：
P=0.613×10-3V2kPa
V为设计风速，本平台稳性校核的设计风速为51.5m/s；
带入风速值得：P=1.63kPa
6.3受风构件的正投影面积
对任意一个横倾角，垂向受风构件的正投影面积为其侧投影面积乘以该倾角的余弦值，甲板下表面的受风正投影面积为甲板面积乘以该倾角的正弦值。
任意横倾角条件下受风构件的正投影面积S
6.4 受风构件的受风面积形心
对任意一个横倾角，受风构件的正投影面积形心距水面高度为正浮时的面积形心高度乘以该倾角的余弦值。
任意横倾角时受风构件的正投影面积形心距水面高度h：
6.5风倾力矩计算
根据《规范》第3篇第2.2.1.4节，风倾力矩M按下式计算：
M q =FZ kN*m
式中：F——计算风力，kN；
Z——计算风力作用力臂,对每个构件该力臂值为4.4节中计算的高度h；
6.5.1横倾0°时的风倾力矩计算
6.5.2横倾10°时的风倾力矩计算
6.5.3横倾20°时的风倾力矩计算
6.5.4横倾30°时的风倾力矩计算
6.5.5横倾40°时的风倾力矩计算
6.5.6横倾50°时的风倾力矩计算
6.5.7横倾55°时的风倾力矩计算
6.6空载时的风倾力矩计算与上述计算方法类似，这里不再累赘，以下直接给
出计算结果
7.进水点以及进水角
本平台没有完整稳性校核中会导致计入浮力的舱室进水的进水点。
本计算书中校核的横倾角范围为0°至55°。
8.基本载况稳性总结表
9.静水力表
纵倾0°，横倾0°
纵倾0°，横倾0°
10.复原力矩计算
10.1作业工况(满载)复原力矩计算
排水量：340t吃水D：11.24m重心高KG：7.91m
10.2作业工况(空载)复原力矩计算
排水量：321.46t吃水D：10.99m重心高KG：7.25m
11.稳性校核
11.1作业工况(满载)
根据《规范》第3篇第2.3.1.1节,对柱稳式平台，典型完整状态静水
力图2.2.1.1中至第2交点或进水角处的复原力矩曲线下的面积中的较 小者，至少应比至同一限定角处风倾力矩曲线下面积大30%。
满载载况的静稳性曲线及动稳性曲线如下：
G Z - m e t r e s
复原力矩曲线下的面积为1410.1 kN*m*rad
风倾力矩曲线下的面积为526.2 kN*m*rad
复原力矩曲线下的面积比风倾力矩曲线下的面积大168 %。
规范要求的经自由液面修正后的初稳性高度为0.15m
经自由液面修正后的初稳性高度为GM=2.08m
结论：本载况稳性衡准满足规范要求。
11.2作业工况(空载)
空载载况的静稳性曲线和动稳性曲线如下：
复原力矩曲线下的面积为2297.1 kN*m*rad 风倾力矩曲线下的面积为724.6 kN*m*rad
G Z - m e t r e s
复原力矩曲线下的面积比风倾力矩曲线下的面积大217%。
规范要求的经自由液面修正后的初稳性高度为0.15m
经自由液面修正后的初稳性高度为GM=11.16m
结论：本载况稳性衡准满足规范要求。
12.横摇周期和横摇角
横摇周期和横摇角参照《船舶与海上设施法定检验规则》（国内航行海船法定检验技术规则）（2011）第4篇7.1.2进行计算。
船舶运动稳定性的计算与分析
船舶运动稳定性的计算与分析随着航运业的不断发展，船舶在海洋中的运行也越来越多。
但是，船舶在海上航行时，由于海浪的影响，总会产生各种各样的不稳定因素，给船舶运行带来困难和风险。
因此，确保船舶的运动稳定性显得尤为重要。
船舶的运动稳定性就是指在海上航行时，船体保持平衡，避免翻船或侧翻的概率。
要保证船舶的运动稳定性，首先需要进行计算和分析，以确保航行时侧倾角度控制在可接受的范围内。
一、船舶运动稳定性的计算与分析方法1. 船舶稳性计算方法船舶稳性计算是指通过测量、计算和分析船舶稳态和动态数据，得出船舶受到波浪力和风力时的稳态和动态特性。
主要包括稳态、动态稳定性、自由恢复性等。
船舶稳性计算主要通过计算公式和图表进行。
2. 有限元方法有限元方法是一种数学计算方法，它以船舶的结构模型作为基础，对船舶运动的三维模型进行求解，从而得到船舶的运动稳定性。
有限元方法可以考虑到船体柔性变形、复杂海浪和气象特性等，因此可以更加精确地计算船舶的运动稳定性。
3. 模拟计算方法模拟计算方法是指建立船舶运动稳定性的数学模型，通过数字仿真计算，得到船舶在风力和波浪下的受力和运动情况。
模拟计算方法包括动态稳定性分析、湍流流场计算等。
二、船舶运动稳定性的影响因素船舶的运动稳定性不仅受到自身结构的影响，还受到外部因素的影响。
1. 船舶结构因素船体的尺寸、形状、重心位置、装载状态、船尾设计等均会影响船舶的运动稳定性。
在进行船舶结构设计时，需要考虑以上因素对稳定性的影响。
2. 外部气象海况因素外部气象海况因素包括风速、浪高、浪向等。
当气象海况恶劣时，对船舶的稳定性造成的影响较大，因此需要及时掌握并采取相应的预警措施。
3. 航线选择航线上存在的航行条件也会对船舶运动稳定性造成一定的影响，如港口、卡口、水深等，需要在航行前进行详细的规划和考虑。
三、船舶运动稳定性的应对措施1. 船舶结构设计在船舶结构设计时，应根据航行的环境条件，合理选择船舶的尺寸、重心位置等参数，以优化船舶的稳定性。
平台稳性111(5)
重心高度计算
1）用估算法确定载荷重心高度
首先，将统一舱内的货物中相邻的积载因数相近 的货物合并并视为一类货物；其次，分别按各 类货物的体积占舱容的比例求出其近似的货堆 高度；然后再根据装货舱室的形状，估算除各 类货物的重心高度；最后，求出舱内所有货物 的合重心。估算各类货物的重心高度时，对于 船舶平行中体部位的舱室，货物的重心可以取 在货堆高度的二分之一处，对于首尾部位的货 舱，则货物重心可取为 0.54—0.58的货堆高度。
（7）可以证明，通过静稳性曲线原点作曲 线的切线，则该切线的斜率等于初稳性 高度GM值。
影响静稳性曲线的主要因素
(1) 船宽 其它条件相同的船舶，其宽度不同，则静稳性 曲线的形状也不同。因为船宽增加，船舶的形 状稳性力臂也越大，复原力臂随之增大。但同 时甲板浸水角将减小。所以，船宽越大，其静 稳性曲线最高点的位置将在较小的横倾角时出 现。即船宽越大，GZmax越大，但 θs·max及 θv越小。如图 4-9所示：对于经常出现大角度 倾斜的海船来说，这种稳性状况是不满意的。
按作用力性质分：静稳性(船舶在外力矩逐渐作用下的稳 性)和动稳性(船舶在外力矩突然作用下的稳性 )
按船体结构完整性分:完整稳性和破损稳性
初稳性的表示方法
由图一知：GZ=GMsina 根据《船舶原理》可知下式为初稳性方程式： 复原力矩MR=9.81△*GZ=9.81△* GMsina △ ----排水量（t） a -----船舶横倾角度（°） GM-----初稳性高度（m） 由此可见，船舶初稳性的大小与GM成正比。所
（5）甲板浸水角
在静稳性曲线从原点到最高点之间有个 反曲点，该点所对应的横倾角即为甲板 浸水角。甲板浸水后稳性的增长缓慢。
深基坑边坡稳定性计算书模板
专业资料土坡稳定性计算书本计算书参照《建筑施工计算手册》江正荣编著中国建筑工业出版社、《实用土木工程手册》第三版杨文渊编著人民教同出版社、《地基与基础》第三版中国建筑工业出版社、《土力学》等相关文献进行编制。
计算土坡稳定性采用圆弧条分法进行分析计算，由于该计算过程是大量的重复计算，故本计算书只列出相应的计算公式和计算结果，省略了重复计算过程。
本计算书采用瑞典条分法进行分析计算，假定滑动面为圆柱面及滑动土体为不变形刚体，还假定不考虑土条两侧上的作用力。
一、参数信息:条分方法：瑞典条分法；考虑地下水位影响；基坑外侧水位到坑顶的距离(m)：1.56；基坑内侧水位到坑顶的距离(m)：14.000；放坡参数：序号放坡高度(m) 放坡宽度(m) 平台宽度(m) 条分块数0 3.50 3.50 2.00 0.001 4.50 4.50 3.00 0.002 6.20 6.20 3.00 0.00荷载参数：土层参数：二、计算原理:根据土坡极限平衡稳定进行计算。
自然界匀质土坡失去稳定，滑动面呈曲面，通常滑动面接近圆弧，可将滑裂面近似成圆弧计算。
将土坡的土体沿竖直方向分成若干个土条，从土条中任意取出第i条，不考虑其侧面上的作用力时，该土条上存在着：1、土条自重，2、作用于土条弧面上的法向反力，3、作用于土条圆弧面上的切向阻力。
将抗剪强度引起的极限抗滑力矩和滑动力矩的比值作为安全系数，考虑安全储备的大小，按照《规范》要求，安全系数要满足>=1.3的要求。
将抗剪强度引起的极限抗滑力矩和滑动力矩的比值作为安全系数，考虑安全储备的大小，按照《规范》要求，安全系数要满足>=1.3的要求。
三、计算公式:式子中：Fs --土坡稳定安全系数；c --土层的粘聚力；li--第i条土条的圆弧长度；γ --土层的计算重度；θi --第i条土到滑动圆弧圆心与竖直方向的夹角；φ --土层的内摩擦角；bi --第i条土的宽度；hi --第i条土的平均高度；h1i ――第i条土水位以上的高度；h2i ――第i条土水位以下的高度；γ' ――第i条土的平均重度的浮重度；q ――第i条土条土上的均布荷载；其中，根据几何关系，求得hi为：式子中：r --土坡滑动圆弧的半径；l0 --坡角距圆心垂线与坡角地坪线交点长度；α ---土坡与水平面的夹角；h1i的计算公式当h1i ≥ hi 时，取h1i = hi；当h1i ≤0时，取h1i = 0；h2i的计算公式：h2i = h i-h1i；hw ――土坡外地下水位深度；li 的几何关系为：四、计算安全系数:将数据各参数代入上面的公式，通过循环计算，求得最小的安全系数Fs：计算步数安全系数滑裂角(度) 圆心X(m) 圆心Y(m) 半径R(m)第1步 1.391 45.259-0.038 8.449 8.449示意图如下：计算步数安全系数滑裂角(度) 圆心X(m) 圆心Y(m) 半径R(m)第2步 1.321 52.516 -0.028 18.947 18.947示意图如下：计算步数安全系数滑裂角(度) 圆心X(m) 圆心Y(m) 半径R(m)第3步 1.325 55.011 0.279 26.296 26.298示意图如下：计算结论如下：第 1 步开挖内部整体稳定性安全系数 Fs= 1.391>1.30 满足要求! [标高 -5.000 m]第 2 步开挖内部整体稳定性安全系数 Fs= 1.321>1.30 满足要求! [标高 -10.000 m]第 3 步开挖内部整体稳定性安全系数 Fs= 1.325>1.30 满足要求! [标高 -13.000 m]附图一基坑平面布置图附图二基坑开挖平面示意图附图三基坑开挖断面图附进度表浓密池及泵房施工进度计划。
水上钢平台施工专项方案(计算书)施)
第一章概述........................................................... 错误！未定义书签。
第二章现浇梁支撑体系的计算....................................... 错误！未定义书签。
2.1、概述...................................................................... 错误！未定义书签。
2.1.1 支顶架的结构............................................... 错误！未定义书签。
2.1.2 钢平台的结构............................................... 错误！未定义书签。
2.2 钢管支架的计算.................................................... 错误！未定义书签。
2.2.1 荷载组合....................................................... 错误！未定义书签。
2.2.2 支架力学计算............................................... 错误！未定义书签。
2.2.3 大楞计算：................................................... 错误！未定义书签。
2.2.4小楞计算........................................................ 错误！未定义书签。
2.2.5底模板计算.................................................... 错误！未定义书签。
2.3 钢平台的计算........................................................ 错误！未定义书签。
自升式钻井平台稳性计算书的建立及应用探究
自升式钻井平台稳性计算书的建立及应用探究发布时间：2022-09-15T05:18:57.431Z 来源：《科技新时代》2022年4期2月作者：贾永兴[导读] 自升式钻井平台与航行船舶存在较大差异，尤其是在对其稳性展开计算时，计算方法贾永兴中海油田服务股份有限公司河北省廊坊市 065201摘要：自升式钻井平台与航行船舶存在较大差异，尤其是在对其稳性展开计算时，计算方法与模型各不相同，基于此，本文以自升式钻井平台为核心，先行探究该平台稳性计算书的建立要点，继而以CJ46型自升式钻井平台为基础，采用NAPA软件对其稳性展开进一步探究，以供参考。
关键词：自升式钻井平台；稳性计算书；建立及应用引言：自升式钻井平台是一种海洋石油勘探设备。
其运行稳定性与垂直方向的插桩作业和水平方向的抗滑能力密切相关。
现有的嵌入式单元运行稳定性研究仅基于经典理论公式和数值计算结果，忽略水平荷载的影响，简单地将水平荷载和垂直荷载分开讨论。
结果与实际情况相差很大，这将导致桩腿插入不到位的现象。
因此，需要进一步计算自升式钻井平台的稳定性，以提高自升式钻井平台的运行稳定性。
一、自升式钻井平台稳性计算书的建立要点1.波流载荷当平台位于底部时，波浪荷载主要作用在小尺度的桩腿上，桩腿之间的距离也相对较大，相互作用相对较小，因此可以将其视为小尺度的隔离桩，因此可以使用莫里森公式来计算波浪力。
在自存条件下，平台最大工作水深76.2m，最大波高16.46m/s，相应周期为13.5s，表面速度为0.5m/s，极限条件为桩腿位于海底淤泥表面以下3M处。
考虑到波、流入射方向与风荷载方向一致的最危险情况，建立桩腿的sacs模型。
桩腿桁架由弦杆、斜杆、水平杆和内杆组成。
绳架材料的屈服极限为690mpa，其他部件的屈服极限为360MPa，材料的弹性模量定义为200GPa：一旦桩靴位于泥面以下3M处，因此不考虑桩靴的变形和破坏，将桩靴模拟为具有大刚度和屈服极限的构件；将平台主体视为刚性体，与桩腿刚性连接，忽略齿轮箱与机架之间的啮合间隙，平台主体自重均匀分布在三个桩腿上；考虑到海洋生物修正的曳力系数和惯性力系数，根据两端齿间的长度，计算弦架在波浪流力作用下的有效长度，波浪流采用斯托克斯五阶波和恒定流[1]。
COMPASS指导书
第 8 站 S8：在第二列中直接输入“8”
第 8 站向前 0.25m 处：在第二列中输入“S8+0.25”
注意：
1）在每个甲板台阶处均须定义一个横剖面，若有首楼和尾楼，首楼后端壁和尾楼
的前端壁截面要输入（这里往往要在型线图中作横剖线），
2）用户在船中处定义一个横剖面（平行中体较长时这一点容易疏忽）。
10 VCB ABOVE RFP....:浮心垂向坐标
11 KMT..............: 横稳心垂向坐标（即 Zm）
12 KML..............: 纵稳心垂向坐标
24 CB...............:
25 CP...............:
26 CM...............:
本步骤的主要目的就是输入船体主尺度，根据型线图在 COMPASS 中建立船体封闭的
实体，并计算船舶邦金曲线，为后续计算做基础。
标识
下列内容为选输内容，通常输入船名和签名
船名(Ship Name)
签名(Sign)
工作标识(Job ID.)
委托人(Client)
日期(Date)
图纸号(Plan No.)
浙江海洋学院序号项目主甲板到设计水线尾部舷墙主甲板到救生甲板救生甲板到驾驶甲板驾驶甲板到罗经甲板罗经甲板栏杆驾驶甲板栏杆居住甲板栏杆信号桅面积流线型系数非满实系数有效受面积中心风面积am10吊臂11吊机栏杆1213抓斗1415装载计算选择需要计算的工况可以多选输入必要的数据便可计算出结果如果提示超出静水力计算范围或横交曲线范围则可回到srh11或srh12把吃水和纵倾范围改大后重算然后再回到srh14计算稳性直到稳性横准各项要求符合为止
3）可运用 Insert 或 Delete 键进行插入或删除操作。
散货船稳性计算书BV
CONTENTS1.PREAMBLE (3)2.GENERAL DESCRIPTION (4)3.LOADING MARK (6)4. INTACT STABILITY CRITERIA (7)5.DAMAGE STABILITY CRETERIA (10)6.ASSESSMENT OF COMPLIANCE WITH STABILITY CRITERIA (10)7.GUIDELINE FOR TRIM & STABILITY CALCULATION (10)8.CAPACITY TABLE OF TANKS (14)9.FREE SURFACE EFFECT CAPSIZING MOMENT (16)10.FLOODING ANGLE CURVE (17)11.MINIMUM INITIAL METACENTRIC HEIGHT (18)12.MISCELLANEOUS CONSUMABLES ON DEPARTURE (19)13.MISCELLANEOUS CONSUMABLES ON ARRIVAL (20)14. TRIM & STABILITY CALCULATION (21)1.PREAMBLEThis Booklet is prepared for the ship's Master in obtaining information and suitable instructions as a guidance to the stability of the ship under varying conditions of service.Relevant requirements in MSC Resolution A749(18) of IMO, and the relevant Class requirements of BV are to be referred to in the usage of this manual.This Booklet comprises following contents. General information and instructions are given for calculation and evaluation of stability of the ship accompanied by a number of loading conditions. Data, such as those of free surface moment of tanks (initial and at large inclination), wind capsizing lever, immersing and flooding angles, limit height of center of gravity, etc., and those of the maximum still water bending moments.General hydrostatic data of the ship, such as displacement, deadweight, center of buoyancy, center of flotation, metacenter, displacement per centimeter of draught and so on, are tabulated against the vessel’s mean draught. Cross stability data, excluding the buoyancy effects of timber deck cargoes or the similar, are provided therein.It is necessary to ensure a satisfactory safety of the ship at any time during each her voyage. Therefore, prior loading operation, the Master shall make a calculation in order to verify that no unacceptable stress in the ship's structure, no insufficient stability, nor inappropriate floating state will occur during the forthcoming voyage.2.GENERAL DESCRIPTIONDimensions:Length overall: ~110.80 MLength between perpendiculars: 104.52 MFreeboard Length 105.02 MBreadth moulded: 18.20 MDepth moulded: 9.00 MDesign draught: 5.50MScantling draught: 6.82MTonnage (ICLL1969):Gross tonnage: 5612Net tonnage: 2867Light ship:Weight: 3050-6.28Longitudinal center of gravityfrom ⊗Vertical center of gravity from7.04baseline:Freeboard:Type of loadline assignment: ICLL 1966Ordinary FreeboardDraught Letter Freeboard Moulded(mm) (m) S 2195 6.820T 2053 6.962W 2337 6.678F 2046 6.969TF 1904 7.111& STABILITY CALCULATION JZ403.101.005JS Page53.LOADING MARKLOADING MARK4.INTACT STABILITY CRITERIAThis vessel is required to comply with the stability requirement of IMO, which are quated hereinfrom IMO Resolution A.749 (18) “Code On Intact Stability For All Types Of Ships Covered ByIMO Instruments“, Chapter 3-DESIGN CRETERIA APPLICABLE TO ALL SHIPS.4.1 General Intact Stability CriteriaThe vessel should comply with the stability criteria as stated below:4.1.1 The area under the righting lever curve (GZ curve) should not be less than 0.055 meter-radians up to θ=30°angle of heel and not less than 0.09 meter-radians up to θ=40°or the angle of flooding θf, if this angle is less than 40°. Additionally, the area under the righting lever curve (GZ curve ) between the angle of heel of 30° and 40° or between 30° and θf if this angle is less than 40°, should not be less than 0.03 meter-radians.4.1.2 The righting lever GZ should be at least 0.20 m at an angle of heel equal to or greater than 30°.4.1.3 The maximum righting arm should occur at an angle of heel preferable exceeding 30° but not less than 25°.4.1.4 The initial metacentric height GMo should not be less than 0.15 m.4.1.5 Provision should be made for a safe margin of stability at all stages of the voyage, regard being given to additions of weight, such as those due to absorption and icing, and to losses of weight, such as those due to consumption of fuel and stores.4.1.6 See also general recommendations of an operational nature given in Section 2.5 of IMO Resolution A.749 (18) Code On Intact Stability For All Types Of Ships Covered By IMO Instruments“,4.2. Severe Wind And Rolling Criterion (Weather Criterion)4.2.1 Beside the stability criteria, this vessel is also to comply with the weather criterion recommended as follows.4.2.2.1 The ability of a ship to withstand the combined effects of beam wind and rolling should be demonstrated for each standard condition of loading, with reference to the figure as follows:•The ship is subjected to a steady wind pressure acting perpendicular to the ship's centreline which results in a steady wind heeling level (l w1).•From the resultant angle of equilibrium (θo), the ship is assumed to roll owing to wave action to an angle of roll (θ1) to windward. Attention should be paid to the effect of steady wind so that excessive resultant angles of heel are avoided;•The ship is then subjected to a gust wind pressure which results in a gust wind heeling lever (l w2);•Under these circumstances, area "B" should be equal to or greater than area "A";•Free surface effects should be accounted for in the standard conditions of loading;θo = a ngle of heel under action of steady windθ1 = angle of roll to windward due to wave actionθ2 = angle of downflooding (θf ) or 50° or θc , whichever is less,where:θf = angle of heel at which openings in the hull, superstructures ordeckhouses which cannot be closed weathertight immerse. In applying thiscriterion, small openings through which progressive flooding cannot takeplace and need not be considered as open.θc = angle of second intercept between wind heeling lever l w2 and GZ curves.4.2.2.2 The wind heeling levers l w1and l w2 referred to are constant values at all angles ofinclination and should be calculated as follows:l P A Z g w 11000=..Δ(m) and l w2 = 1.5 l w1 (m)where:P = 504 N/m 2. The value of P used for ships in restricted service may be reducedsubject to the approval of the Administration;A = projected lateral area of the portion of the ship and deck cargo above thewaterline (m 2);Z = vertical distance from the centre of A to the centre of the underwaterlateral area or approximately to a point at one half the draught (m);Δ = displacement (t) g = 9.81 m/s 24.2.2.3 The angle of roll (θ1) referred to should be calculated as follows:θ11092=⋅⋅⋅ k 1 r s X X (degrees)where:X 1 = factor as shown in table 1X 2 = factor as shown in table 2k = factor as follows:k =1.0 for round-bilged ship having no bilge or bar keelsk =0.7 for a ship having sharp bilgesk =as shown in table 3 for a ship having bilge keels, a bar keel or bothr = 0.73 + 0.6 OG/dwith: OG = distance between the centre of gravity and the waterline (m) (+ if centre ofgravity is above the waterline, - if it is below)d = mean moulded draught of the ship (m)s = factor as shown in table 4.Table 1Table 2Table 3Table 4Values of Factor X1Values offactor X1Values offactor kValues offactor sB/d X1C B X2A k.100 k T sL.B≤2.4 1.00 ≤0.45 0.75 0.0 1.00 ≤6 0.1002.5 0.98 0.50 0.82 1.0 0.98 7 0.0982.6 0.96 0.55 0.89 1.5 0.95 8 0.0932.7 0.95 0.60 0.95 2.0 0.88 12 0.0652.8 0.93 0.65 0.97 2.5 0.79 14 0.0532.9 0.91 ≥0.70 1.003.0 0.74 16 0.0443.0 0.90 3.5 0.72 18 0.0383.1 0.88 ≥4.0 0.70 ≥20 0.0353.20.863.30.843.4 0.82≥3.5 0.80(Intermediate values in tables 1-4 should be obtained by linear interpolation.)Rolling period TCBGM=2(seconds)where:C = 0.373+0.023(B/d)-0.043(L/100)The symbols in the above tables and formula for the rolling period are defined as follows:L = waterline length of the ship (m)B = moulded breadth of the ship (m)d = mean moulded draught of the ship (m)C B = block coefficientAk = total overall area of bilge keels, or area of the lateral projection of the bar keel, or sum of these areas (m2)GM = metacentric height corrected for free surface effect (m).4.3. Effect Of Free Surface Of Liquids In TanksFor all conditions, the initial metacentric height and the stability curves should be corrected for the effect of free surfaces of liquids in tanks in accordance with the following assumptions:4.3.1 Where water ballast tanks are to be discharged and filled during the course of a voyage, the free surface effects should be calculated, to take account of the most onerous transitory stage relating to such operations, consistent with any operating instruction.In calculating the free surface effects in tanks containing consumable liquids, it should be assumed that for each type of liquid, at least one transverse pair or a single centreline tank has a free surface and the tank or combination of tanks taken into account should be those where the effect of free surfaces is the greatest.4.3.2 For the purpose of determining this free surface correction, the tanks assumed slack should be those which develop the greatest free surface moment, Mf.s. at a 30° inclination when in the 50 per cent full condition.4.3.3 The values of Mf.s. for each tank may be derived from the formula:Mf s V b k....=γδwhere:M f.s. is the free surface moment at any inclination, in metre-tonnesV is the tank total capacity in m3b is the tank maximum breadth in metresγ is the specific weight of liquid in the tank in t/m3δ is equal to (V/ blh) (the tank block coefficient)h is the tank maximum height in metresl is the tank maximum length in metresk is the dimensionless coefficient to be determined from the following table according to the ratio b/h. The intermediate values are determined by interpolation.4.3.4 Small tanks, which satisfy the following condition using the value of k corresponding to the angle of inclination of 30°, need not be included in computation:(Mf.s. / Δmin)< 0.01 mwhereΔmin = minimum ship displacement in tonnes (metric tonnes)4.3.5 The usual remainder of liquids in the empty tanks is not taken into account in computation.5.DAMAGE STABILITY CRETERIABeside the intact stability criteria, this vessel must also meet the requirements for damage stability imposed by SOLAS Part1.ChapterII-1.Part B-1 (Subdivision and damage stability of cargo ship) and relevant IACS requirements on following basisAt summer draft 6.820 m, the KG value is taken as 6.732 m, corresponding to 1.00 m GM value; while at partial draft 4.956 m, the KG value is taken as 6.751 m, corresponding to a 1.20 m GM value. These two points gives additional limits to the minimum GM and maximum KG derived from intact stability requirements. Detailed min. GM and max. KG curve can be found in this booklet.6.ASSESSMENT OF COMPLIANCE WITH STABILITY CRITERIAFor the purpose of assessing quickly whether the stability criteria set in proceeding paragraphs are met, a comprehensive limit KG (center of gravity above keel line) is given in this Manual with tabular values.The limit KG value is the maximum permissible KG corrected for free surface effect of liquids in tanks, regarding both the IMO regulations for intact stability and damage stability of cargo ships.Its usage is demonstrated in the following paragraph.7.GUIDELINE FOR TRIM & STABILITY CALCULATION7.1 DISPLACEMENT CALCULATION FROM DRAFT READING1. Read the drafts on the fore, aft and midship draft scales, obtaining T F', T A' and T⊗respectively.If measured port and starboard draughts are different, arithmetical mean of them is to be adopted.2. Correct the observed draught in order to obtain the draughts at FP, AP and midship. This is carried out using the table. in which the correction values can be obtained via apparent trim, as stated below:Apparent trim = TA' - TF'Thus, the corrected drafts are:Draft at midship: T⊗=T’⊗ + T⊗Draft at F.P. TF = TF' + TFDraft at A.P. TA = TA' + TATrim =TA-TFDeflection of the keel h =(TF+TA)/2 - T⊗If h >0, it is in hogging condition, and h<0, in sagging condition.3. Read displacement in table "DISPLACEMENT BY TRIM" with trim=TA-TF, and Draft=(TF+TA)/2-0.75h, obtaining displacement D (t)7.2 TRIM CALCULATIONThis calculation is preceded with "TRIM AND STABILITY CALCULATION SHEET" shown on following page.1. Put the weight of cargo, fuel, fresh water, ballast water, provision, crew and their effective, etc. into the column "Weight".2. Sum up the above mentioned weights to obtain DEADWEIGHT.3. Sum up the DEADWEIGHT and LIGHT SHIP obtain DISPLACEMENT4. Put the vertical and longitudinal center of gravity of each item into column "VCG" or "LCG", respectively.If the LCG is forward of midship, then LCG takes a "+" sign, and if after midship , takes "-" sign.5. Multiply the weights by their LCG, and put the products into "MOMENT abt. MS".6. Sum up the moments abt. MS. of each item, and divide the sum by DISPLACEMENT, we have LCG of the ship.7. Find TM, LCB, LCF and MTC in HYDROSTATIC TABLE according to DISPLACEMENT. Trim is found as:t = (LCG - LCB) * DISP/100/MTC *( p/1.025)Draft at FP:TF= TM + (0.5 - LCF/LPP ) * tDraft at AP:TA= TM - (0.5 + LCF/LPP ) * twhere:TM = mean draft, almost equal to draft at LCFLCF = Longitudinal position of the center of flotation.8. Evaluate basic working environment of the propeller by immersion rate, shown below:Submersion rate = I / Dp * 100 %where: Dp is the diameter of the propeller, h is the height of shaft centerline, above the ship's baseline.I = submersion of the propeller, shown on the figure below:For this vessel, 100% propeller immersion rate is achieved at 5.90 m draft at A.P.7.3 STABILITY CALCULATION"Stability" includes initial stability indicated in the form of initial metacentric height GMo and stability at large inclination expressed by "Righting Lever Curve" (or called GZ curve)This calculation is proceeded with use of "TRIM AND STABILITY CALCULATION SHEET" on following page, the same as for "TRIM CALCULATION". The procedure is described hereafter:1. The columns "WEIGHT" and "DISPLACEMENT" are obtained from trim calculation explained on the previous page.2. Put the vertical center of gravity of each loading weight into the column "VCG".3. Multiply the weight by VCG and put the result into column MOMENT about BL.4. Sum up the above moment abt. BL and put this sum into the bottom of this column.5. Divide the sum by displacement, thus the vertical center of gravity of the ship is obtained.6. Collect IFSM data from table "Initial Free Surface Moment", put them into the last column. Calculate the their sum and write it below the cell marked IFSM.7. Calculate initial metacentric height GMo as follows:Initial metacentric height GM = TKM - KGInitial metacentric height corrected by free surfaceGMo = GM - IFSM/DISPWhere: TKM is the transverse metacentric height above base line, obtained from "Hydrostatic Table"8. Static stability curve can be obtained as:Ls = Lf - KG *sin θ - Mfs/DISPwhere: Lf--form righting lever when assuming the VCG of the ship is equal to zero. Numerical values are tabulated in "CROSS STABILITY TABLE”.Mfs is the heeling moment due to liquid shifting,9. Integrate Ls from 0o to θ obtain dynamical stability lever. Trapezoid method of integral may be adopted.10. Plot the Ls against angle of heel, we have the Righting Lever Curve.11. Calculate capsizing lever due to steady wind Lw1, and capsizing lever due to gust windLw2, equilibrium angle θo, roll angle θ1 according to formula described on page 1- .12. Integrate area A and area B.13. Judge the stability according to intact stability criteria stated on above page.SIMPLIFIED METHOD OF EVALUATING STABILITYThis method is based on the tabulated values of the "LIMIT HEIGHT OF CENTER OF GRAVITY", which provides maximum allowable vertical center of gravity (KGmax), and minimum initial metacentric height (GMmin) against displacement of the ship. Following the procedure described below, we can easily evaluate whether the ship has sufficient stability or not.Maximum allowable vertical center of gravity is calculated in accordance with the intact stability criteria, but the condition for calculation of damage stability required by SOLAS 1974 Chapter II,Part B-1, Regulation are also incorporated. The conditions for calculation of damage stability are described on above page.The evaluating procedure is the following:1. Calculate displacement (DISP), vertical center of gravity of the ship, and total sum of initial free surface moments (IFSM) of all tanks that may have free surface during the voyage, in such a way as described in "Stability Calculation"2. Correct the vertical center of gravity KG by free surface effect as:KG'= KG + IFSM/DISP3. Find KGmax in the table "LIMIT HEIGHT OF CENTER OF GRAVITY" on page 1-24 according to displacement DISP.4. Compare KG' with KGmax. If KG' is less than KGmax, then, the ship has sufficient stability , and satisfies all intact stability criteria and the requirements of damage stability.If KG' is greater then KGmax, Master should alter the loading plan in order to modify stability. Then repeat step 1 thru 4, until KG' reaches the value less then KGmax.Alternately, by correcting initial metacentric height per formula:GMo = GM - IFSM/DISPwhereGMo is the corrected value of GM, the initial metacentric height uncorrected by the free surface effect of liquids in tanks, we can also use the table of "LIMIT HEIGHT OF CENTER OF GRAVITY" and find GMmin, the minimum allowable initial metacentric height. Then compare GMo and GMmin. If GMo is less then GMmin, the ship has bad stability, and the Master must alter the loading plan.8.CAPACITY TABLE OF TANKSTANK CAPACITYCEN. OF GRA.CEN. OF GRA FREENO. DESIGNATION FRAME VOLUMEWEIGHT Xg(LCG) Yg Zg(VCG)SURFACE项 名称 位置 容积 重量 重心纵向 重心横向 重心垂向自由液面目 (m3)t (m)(m)(m) t-m 货舱 CARGO HOLD1 NO.1 CARGO HOLD Fr110-Fr137 2806.49 33.050 0.000 7.0402 NO.2 CARGO HOLD Fr68-Fr110 3838.83 9.275 0.000 5.7033 NO.3 CARGO HOLD Fr28-Fr68 3588.43 -19.222 0.000 5.828合计 TOTAL 10233.75淡水舱 F.W.T4 F.W.T(P/S)Fr64-Fr70 41.98 41.98 -5.769 0.000 8.129 84.55合计 TOTAL 83.96 83.96压载舱 B.W.T5 F.P.T. Fr143-STEM 196.10 201.00 49.795 0.000 4.288 152.906 NO.1D.B.W.T(P) Fr122-Fr137 66.43 68.09 37.625 -3.022 0.704 260.867 NO.1D.B.W.T(S) Fr122-Fr137 72.42 74.23 37.301 2.865 0.699 240.258 NO.2D.B.W.T(P) Fr110-Fr122 62.60 64.17 28.265 -5.200 0.678 604.629 NO.2D.B.W.T(S) Fr110-Fr122 86.57 88.74 28.316 4.070 0.670 446.2810 NO.3D.B.W.T(P) Fr87-Fr110 135.81 139.21 16.171 -5.557 0.665 1366.9811 NO.3D.B.W.T(S) Fr87-Fr110 181.76 186.30 16.178 4.436 0.661 1011.2212 NO.4D.B.W.T(P) Fr68-Fr87 112.78 115.59 1.500 -5.574 0.663 1134.0113 NO.4D.B.W.T(S) Fr68-Fr87 150.73 154.50 1.500 4.452 0.660 838.9714 NO.1S.B.W.T(P/S) Fr122-Fr137 138.78 142.25 37.755 0.000 4.277 54.3215 NO.2S.B.W.T(P/S) Fr110-Fr122 76.80 78.72 28.843 0.000 4.093 5.5216 NO.3S.B.W.T(P/S) Fr87-Fr110 127.74 130.93 16.197 0.000 4.001 4.5517 NO.4S.B.W.T(P/S) Fr68-Fr87 105.58 108.21 1.500 0.000 4.000 3.7618 NO.5S.B.W.T(P/S) Fr46-Fr68 145.03 148.65 -12.756 0.000 3.488 4.3519 NO.6S.B.W.T(P/S) Fr28-Fr46 174.68 179.05 -27.966 0.000 4.033 49.5220 A.P.T(C) STERN-Fr9 62.44 64.00 -49.083 0.000 5.033 243.0221 A.B.W.T(P/S) STERN-Fr4 31.01 31.79 -51.604 0.000 7.914 20.37合计 TOTAL 2726.86 2795.03燃油舱 F.O.T22 NO.1F.O.T(P) Fr46-Fr68 102.90 98.78 -12.841 -4.917 0.651 185.9223 NO.1F.O.T(S) Fr46-Fr68 145.95 140.11 -12.844 3.797 0.650 530.0024 NO.2F.O.T(P) Fr28-Fr46 61.01 58.57 -25.819 -4.358 0.678 91.8325 NO.2F.O.T(S) Fr28-Fr46 96.23 92.38 -26.197 3.173 0.668 290.1926 F.O.OVERFLOW.T(P) Fr23-Fr28 9.29 8.92 -35.289 -2.645 0.862 5.1727 NO.1 F.O.SER.T(S) Fr21-Fr23 6.69 6.43 -37.350 6.355 7.400 1.70 28 NO.2 F.O.SER.T(S) Fr23-Fr2610.04 9.64 -35.600 6.355 7.400 2.54 29 NO.1F.O.SETTLING.T(S)Fr21-Fr23 7.93 7.61 -37.321 7.626 6.317 0.33 30 NO.2F.O.SETTLING.T(S)Fr23-Fr26 14.44 13.87 -35.565 7.709 6.160 0.54 合计 TOTAL 454.48 436.30 柴油舱 M.G.O31 NO.1 M.D.O(P) Fr16-Fr23 11.39 9.57 -38.651 -2.286 1.044 5.23 32 NO.1 M.D.O(S) Fr16-Fr25 17.23 14.47 -37.722 2.447 1.020 10.78 33NO.2 M.D.O(C)Fr12-Fr16 9.66 8.11 -42.666 0.000 0.700 12.18 34 M.D.O.SEV.T(S)Fr9-Fr13 8.98 7.54 -44.989 5.708 7.084 0.38 35 M.D.O.SETTLING.T(S)Fr9-Fr13 6.66 5.59 -44.897 7.042 7.570 1.13 合计 TOTAL53.91 45.28 滑油舱 L.O.T36 L.O. STORAGE TK(S)Fr5-Fr8 5.94 5.35 -47.997 6.020 7.566 1.93 37L.O.CIRCULATING TK(C)Fr17-Fr23 3.04 2.73 -38.750 0.000 0.900 0.57 合计 TOTAL8.98 8.08 杂项 MISCELLANEOUS38 S/T C.W.T （C ） STERN-Fr9 8.74 8.74 -47.265 0.013 2.285 0.96 39 BILGE WATER TK.(C) Fr9-Fr12 3.36 3.36 -45.263 0.000 0.753 2.67 40 SLUDGE TK.（S ）Fr25-Fr28 15.71 15.08 -34.168 2.384 0.915 29.94 41 PURIFY SLUDGE T(S) Fr15-Fr20 6.74 6.47 -39.732 6.044 5.220 3.18 42DIRTY L.O. TK (C)Fr17-Fr23 3.04 2.73 -38.750 0.000 0.300 0.57 43 SEWAGE TK(P) Fr4-Fr7 5.26 5.26 -48.594 -5.967 7.616 1.89 44 C.H. WASH TK.(C) Fr106-Fr110 16.1016.10 22.899 0.000 8.134 17.06 45合计 TOTAL58.9557.749. FREE SURFACE EFFECT CAPSIZING MOMENTLENGTH BREADTH HEIGHT VOLUMEDENSITYFREE SURFACE EFF. CAPSIZING MOMENTCOMPARTMENTl b h V ρMfs( m ) ( m ) ( m ) ( m 3)( t / m 3) 10 20 30 40 50 60* F.P.T. 8.360 10.400 8.100 196.10 1.025 20.8 43.0 68.8 101.6 122.4 129.4 * NO.1D.B.W.T(S) 10.500 7.863 1.300 72.42 1.025 42.4 54.8 54.5 50.8 45.2 37.9 * NO.2 D.B.W.T(S) 8.400 9.100 1.300 86.57 1.025 73.6 87.4 85.5 79.1 69.8 58.0 * NO.3 D.B.W.T(S) 16.100 9.100 1.300 181.76 1.025 161.6 192.0 188.0 173.9 153.3 127.5 * NO.4 D.B.W.T(S) 13.3009.1001.300150.731.025 134.3159.5156.2144.5127.4105.9NO.1S.B.W.T(P/S) 10.500 4.439 5.400 138.78 1.025 5.7 11.7 18.7 27.9 42.1 57.3NO.2S.B.W.T(P/S) 8.400 2.750 5.400 76.80 1.025 1.3 2.6 4.2 6.3 9.4 15.6 NO.3S.B.W.T(P/S) 16.100 1.500 5.400 127.74 1.025 0.8 1.6 2.6 3.9 5.9 9.7 NO.4S.B.W.T(P/S) 13.300 1.500 5.400 105.58 1.025 0.7 1.4 2.2 3.2 4.9 8.1 NO.5S.B.W.T(P/S) 15.400 1.500 6.700 145.03 1.025 0.7 1.5 2.3 3.5 5.3 8.7 NO.6S.B.W.T(P/S)12.600 5.000 6.700 174.68 1.025 6.3 13.1 20.9 31.1 46.9 69.3 * A.P.T(C) 7.60010.0002.40062.441.025 22.939.842.340.737.132.1A.B.W.T(P/S) 4.500 4.500 2.700 31.01 1.025 2.6 5.5 8.7 11.3 12.0 11.8 F.W.T(P/S) 4.200 6.270 2.300 41.98 1.000 8.8 18.2 23.4 24.2 23.2 21.0 * NO.1 F.O.T(S) 15.400 7.600 1.300 145.95 0.960 89.5 118.7 118.5 110.9 98.7 83.0 * NO.2 F.O.T(S) 12.6007.6001.30096.230.960 53.070.370.265.658.449.1NO.1 M.D.O(S) 6.300 3.800 1.660 17.23 0.840 1.2 2.5 3.7 4.0 3.9 3.6NO.2 M.D.O(C)2.800 4.728 1.200 9.660.8401.7 3.1 3.4 3.3 3.02.6JZ MARINE TRIM & STABILITY CALCULATION JZ403.101.005JS Page 161711.MINIMUM INITIAL METACENTRIC HEIGHTJZ MARINE TRIM& STABILITY CALCULATION JZ403.101.005JS Page 1812.MISCELLANEOUS CONSUMABLES ON DEPARTUREMISCELLANEOUS CONSUMABLES ON DEPARTUREVERTICAL LONGITUDINAL FREEDESIGNATION FRAME WEIGHT(t)Zg(VCG) MOMENT Xg(LCG)MOMENTSURFACE REMARK燃油溢油舱(左) F.O.OVERFLOW.T(P) Fr23-Fr28 8.74 0.86 7.53 -35.29 -308.43 0.00 98% NO.1燃油日用舱(右) NO.1 F.O.SER.T(S) Fr21-Fr23 6.30 7.40 46.60 -37.35 -235.18 0.00 98% NO.2燃油日用舱(右) NO.2 F.O.SER.T(S) Fr23-Fr26 9.45 7.40 69.90 -35.60 -336.26 0.00 98%NO.1燃油沉淀舱(右)NO.1F.O.SETTLING.T(S) Fr21-Fr23 7.46 6.32 47.12 -37.32 -278.40 0.00 98%NO.2燃油沉淀舱(右)NO.2F.O.SETTLING.T(S) Fr23-Fr26 13.59 6.16 83.70 -35.57 -483.26 0.00 98%柴油日用舱(右) M.D.O.SEV.T(S) Fr9-Fr13 7.39 7.08 52.36 -44.99 -332.54 0.00 98% 柴油沉淀舱(右) M.D.O.SETTLING.T(S)Fr9-Fr13 5.48 7.57 41.49 -44.90 -246.07 0.00 98% 滑油储存舱(右) L.O. STORAGE TK(S) Fr5-Fr8 5.24 7.57 39.65 -48.00 -251.54 1.93 98%滑油循环舱(中) L.O.CIRCULATINGTK(C) Fr17-Fr23 2.68 0.90 2.41 -38.75 -103.83 0.57 98%艉轴冷却水舱(中) S/T C.W.T(C) STERN-Fr98.74 2.29 19.97 -47.27 -413.00 0.96 100% 舱底水舱(中) BILGE WATER TK.(C) Fr9-Fr12 0.00 0.75 0.00 -45.26 0.00 2.67 0% 油渣舱(右) SLUDGE TK.(S) Fr25-Fr28 0.00 0.92 0.00 -34.17 0.00 29.94 0%分油机油渣舱(右) PURIFY SLUDGE T(S)Fr15-Fr20 0.00 5.22 0.00 -39.73 0.00 3.18 0%污滑油舱(中) DIRTY L.O. TK (C) Fr17-Fr23 0.00 0.30 0.00 -38.75 0.00 0.57 0% 污水舱(左) SEWAGE TK(P) Fr4-Fr7 0.00 7.62 0.00 -48.59 0.00 1.89 0%TOTAL 75.061 5.472 410.734 -39.815 -2988.52 41.710 JZ MARINE TRIM& STABILITY CALCULATION JZ403.101.005JS Page 1913.MISCELLANEOUS CONSUMABLES ON ARRIVALMISCELLANEOUS CONSUMABLES ON ARRIVALVERTICAL LONGITUDINAL FREEDESIGNATION FRAME WEIGHT(t)Zg(VCG) MOMENT Xg(LCG)MOMENTSURFACE REMARK燃油溢油舱(左) F.O.OVERFLOW.T(P) Fr23-Fr28 8.74 0.86 7.53 -35.29 -308.43 0.00 98% NO.1燃油日用舱(右) NO.1 F.O.SER.T(S) Fr21-Fr23 6.30 7.40 46.60 -37.35 -235.18 0.00 98% NO.2燃油日用舱(右) NO.2 F.O.SER.T(S) Fr23-Fr26 9.45 7.40 69.90 -35.60 -336.26 0.00 98%NO.1燃油沉淀舱(右)NO.1F.O.SETTLING.T(S) Fr21-Fr23 7.46 6.32 47.12 -37.32 -278.40 0.00 98%NO.2燃油沉淀舱(右)NO.2F.O.SETTLING.T(S) Fr23-Fr26 13.59 6.16 83.70 -35.57 -483.26 0.00 98%柴油日用舱(右) M.D.O.SEV.T(S) Fr9-Fr13 7.39 7.08 52.36 -44.99 -332.54 0.00 98% 柴油沉淀舱(右) M.D.O.SETTLING.T(S)Fr9-Fr13 5.48 7.57 41.49 -44.90 -246.07 0.00 98% 滑油储存舱(右) L.O. STORAGE TK(S) Fr5-Fr8 0.53 7.57 4.05 -48.00 -25.67 1.93 10%滑油循环舱(中) L.O.CIRCULATINGTK(C) Fr17-Fr23 0.27 0.90 0.25 -38.75 -10.60 0.57 10%艉轴冷却水舱(中) S/T C.W.T(C) STERN-Fr98.74 2.29 19.97 -47.27 -413.00 0.96 100% 舱底水舱(中) BILGE WATER TK.(C) Fr9-Fr12 3.36 0.75 2.53 -45.26 -151.90 2.67 100% 油渣舱(右) SLUDGE TK.(S) Fr25-Fr28 15.08 0.92 13.80 -34.17 -515.25 29.94 100% 分油机油渣舱(右) PURIFY SLUDGE T(S)Fr15-Fr20 6.47 5.22 33.79 -39.73 -257.19 3.18 100% 污滑油舱(中) DIRTY L.O. TK (C) Fr17-Fr23 2.73 0.30 0.82 -38.75 -105.94 0.57 100% 污水舱(左) SEWAGE TK(P) Fr4-Fr7 5.26 7.62 40.08 -48.59 -255.70 1.89 100%TOTAL 100.854 4.600 463.972 -39.219 -3955.39 41.710 JZ MARINE TRIM& STABILITY CALCULATION JZ403.101.005JS Page 20JZ MARINE TRIM AND STABILITY CALCULATION JZ403.101.005JS Page 21General Loading Case No.1LIGHT SHIPWEIGHTVCGMOMENT LCGMOMENT FSMI T E Mabt.BLabt.MS( t ) ( m )( t-m )( m ) ( t-m )( t-m )Crew, Luggage 0.0017.0000.0-45.0000.0Provisions(P&S)0.008.1290.0-5.7690.00.00No.1 F.O.T(P&S)0.000.6500.0-12.8430.00.00No.2 F.O.T(P&S)0.000.6720.0-26.0500.00.00NO.1 M.D.O(P&S)0.00 1.0300.0-38.0920.00.00NO.2 M.D.O(C)0.000.7000.0-42.6660.00.00Miscellaneous Consumables 0.00 5.470.0-39.820.00.000.00.00.00Cargo00.00.00.00 No.1 Cargo Hold 0.007.0400.033.0500.00.00 No.2 Cargo Hold 0.00 5.7030.09.2750.00.00 No.3 Cargo Hold 0.00 5.8280.0-19.2220.00.00BALLAST WATER (C)0.00 4.2880.049.7950.00.00No.1 D.B Tk(P&S)0.000.7010.037.4560.00.00No.2 D.B Tk(P&S)0.000.6730.028.2950.00.00No.3 D.B Tk(P&S)0.000.6630.016.1750.00.00No.4 D.B Tk(P&S)0.000.6610.0 1.5000.00.00No.1 S.B.W.T(P&S)0.00 4.2770.037.7550.00.00No.2 S.B.W.T(P&S)0.00 4.0930.028.8430.00.00No.3 S.B.W.T(P&S)0.00 4.0010.016.1970.00.00No.4 S.B.W.T(P&S)0.00 4.0000.0 1.5000.00.00No.5 S.B.W.T(P&S)0.00 3.4880.0-12.7560.00.00No.6 S.B.W.T(P&S)0.00 4.0330.0-27.9660.00.00APTk(C)0.00 5.0330.0-49.0830.00.00Aft (P&S)0.007.9140.0-51.6040.00.00DEADWEIGHT 0.000.00.0LIGHT SHIP 3050.007.04021472.0-6.280-19154.0 DISPLACEMENT3050.07.04021472.0-6.280-19154.00.00Lpp =104.52 ( m ) TRIM AND INITIAL STABILITYDp =3.400 ( m ) h =2.000( m )Draft Moulded ( m ) 2.147 3.9497KG ( m )7.040LCG *( m )-6.280TKM 8.649( m )12.963LCB *( m ) 3.300 3.0401IFSM ( t-m ) 0LCF *( m ) 3.168 2.0743IFSM/DISP ( m ) 0.000MTC ( t-m/cm )88.17397.849GM ( m ) 5.923Trim **( m ) 3.314GMo ( m ) 5.923Draft at F.P.( m )0.591KG'=KG+IFSM/DISP ( m ) 7.040Draft at A.P.( m ) 3.904Immersion RateDraft at M.S.( m )2.248of Propeller( % )106.0GMo5.9230.150Note:* Minus sign "-" stands for position after midship ** Trim = draft at A.P. - draft at F.P.STABILITY REQUIREMENTALLOWABLE GMoJUDGEMENTYES。
浮式平台二 海洋工程结构稳性分析的规范方法
第四章 结构稳性
浮式结构设计基础
2008 2008年5月
Effective Width Method
有效宽度定义（σm为实际分 布应力）
一般轻情况，板的临界应力 令b-> be
所以，可得 而实际更精确 的分析表达式有所不同
第四章 结构稳性
浮式结构设计基础
2008 2008年5月
第四章 结构稳性强度分析 Structural Stability Strength Analysis and Design
第二节 稳性分析的规范方法 Buckling Analysis from Rules
Typical Stiffened Panel
第四章 结构稳性
浮式结构设计基础
2008 2008年5月
Three structure types
Unstiffend plates (板只有一边 有加强筋） Stiffened plates （板两纵边有 加强筋） Stiffended plate panels.（带加 强筋的板块） panel buckling, stiffener buckling as well as local buckling of stiffener and girder flanges, webs and brackets
Stiffen Plate
Panel
第四章 结构稳性
浮式结构设计基础
2008 2008年5月
结构的受力形式
单向均匀受压（纵向或横向） 纯剪切 单向变化载荷受压 正应力与剪应力联合作用 正应力、剪应力与横向载荷（垂直 于板面的载荷）联合作用
回顾: 板线弹性分析假设
海上钢平台搭设专项施工方案(含计算)
XXX海上钢平台搭设安全专项施工方案编制单位： XXX项目经理部编制日期：二O一X年X月目录1. 编制说明 (1)1.1、编制依据 (1)1.2、编制目的 (1)1.3、编制范围 (1)2、工程概况 (2)2.1、工程概况 (2)2.2、工程自然条件 (2)2.2.1、工程地质条件 (3)2.2.2、工程水文条件 (4)2.2.3、气象条件 (5)2.2.4、现场施工条件 (5)3、施工方案 (5)3.1、施工工艺流程 (5)3.2、施工准备 (5)3.3、施工主要技术参数及技术要求 (5)3.4、钢平台搭设施工方法 (5)3.4.1、施工方法 (7)3.4.2、平台受力检算 (7)4、质量保证措施 (11)5、危险因素分析 (11)5.1、危险源识别及分析 (11)5.2、预防措施 (16)6、安全保证措施 (16)7、安全检查和验收 (20)7.1、检查方法、内容 (20)7.1.1、水上作业防护设施检查 (21)7.1.2、起吊施工操作过程检查 (21)7.1.3、机电设备检查 (21)7.1.4、航道检查 (21)7.2、程序验收 (21)8、各项施工资源的投入 (24)8.1、投入的主要设备 (24)8.2、投入主要材料 (24)8.3、仪器设备配置 (25)8.4、施工期间的人力配置 (25)9、施工进度安排 (25)1.编制说明本方案是根据《浙江省公路水运危险性较大部分分项工程安全专项施工方案管理办法》相关要求进行编制的。
1.1、编制依据《安全生产法》；《建设工程安全生产管理条例》；《生产安全事故报告和调查处理条例》；《建筑施工安全检查标准》（JGJ59-2011);《施工现场临时用电安全技术规范》（JGJ46-2005）；《港口工程桩基规范》（JTS167-4-2012；《钢结构设计规范》(GB50017-2003);《钢结构工程施工质量验收规范》（GB50205-2001);《浙江省公路水运危险性较大分部分项工程安全专项施工方案管理方法》；国家及地方相关法律、法规等。
稳性计算书 改
4
初稳心高GM0
m
5.903
5.955
13.984
14.890
各种装载情况下稳性计算书
5
自摇周期
S
5.927
5.932
6.062
6.062
6
系数C1（按 查表2.1.12）
0.163
0.161
0.155
0.157
7
重心距基线Zg
m
3.057
3.045
3.666
3.660
8
系数C2=0.21+0.26×Zg/d
m
4.828
4.878
13.654
14.585
7
极
限
角
进水角位置
m
y=4.8m
z=4.75 m
8
进水角
(°)
18.5
19.0
59.6
62.7
9
极限静倾角
(°)
11
11.3
14
14
10
特征值
复原力臂曲线
最大力臂对应角
(°)
21.2
24
25
25
11
最大力臂实际值
m
1.28
1.365
3.32
3.35
12
( ， )小者的复原力臂
1.250
1.200
3
重心距舯Xg
m
2.383
2.991
-0.556
-0.187
4
浮心距舯Xb
m
2.520
2.400
3.610
3.690
5
每厘米纵倾力矩Mcm
t·m/cm