路基路面课程课设(优秀版)

0 华东交通大学 课程设计（论文）任务书 题目名称 路基路面工程课程设计 院 （系） 土木建筑学院

专 业 交通工程 班 级 2009－1 姓 名 刘超超 1

目录 1 设计资料 ······································································································1 1.1工程概况································································································1

1.2设计资料··································· ····························································1

1.3 设计目的任务····························· ························································1 2 交通量分析··································································································2

3 沥青路面设计·····························································································2

4 水泥混凝土路面设计··············································································11

4.1 混凝土路面设计基准期·····································································11

4.2 标准轴载及轴载当量换算·································································11

4.3 拟定路面结构······················································································12

4. 4 方案一的计算(手算) ··········································································13

4.4.1 确定材料参数···········································································13

4.4.2计算荷载疲劳应力·····································································14

4.4.3计算温度疲劳应力·····································································15

4.5方案二的计算（软件计算）······································································16

4.6接缝设计································································································17

5 方案比选········································································································18

6 总结体会········································································································19 2

7 参考文献········································································································19

1 设计资料 1.1 工程概况 拟设计路面属某段高速公路..路段位于平原微丘区,公路自然区划为 Ⅱ2 区,地震烈度为六级,设计标高240.50m,地下水位1.45m。

1.2 设计资料

所经地区多处为粘性土。根据最新路网规划,预测使用初期2012年平均日交通量见下表：

表1-1交通组成及交通量表 车型 双向交通量 小客车SH—130 912

大客车SH—141 173

跃进牌NJ—130 647

东风牌EQ—140 344

黄河牌JN—150 420

日野KB222 86

太8 94

交通量年平均增长率脱拉13（％） 7.2

1.3 设计目的任务

（1）根据所给资料,利用 HPDS2006公路路面设计程序系统进行路面结构的设计

(沥青路面水泥路面至少各2种不同的路面结构各，其中水泥路面结构手工完成一个方案的计算)。 (2)进行水泥混凝土路面及沥青路面结构,厚度设计,水泥混凝土路面级构组合设计、 3

板厚度设计、接缝设计等，并比选按方案。 2 交通量分析· 《公路工程技术标准》规定： 四车道高速公路应能适应将各种汽车折合成小客车的年平均日交 通量 25000 -55000 辆 六车道高速公路应能适应将各种汽车折合成小客车的年平均日交 通量 45000 -80000 辆 八车道高速公路应能适应将各种汽车折合成小客车的年平均日交 通量 60000 -100000 辆 表2-1 交通量及换算系数 车型 小客车SH-130 大客车SH-141 跃进牌NJ-131 东风牌EQ-140 黄河牌JN-150 日野KB222 太脱拉138

交通量（辆/日） 876 169 472 270 270 81 77

换算系数 1.0 2.0 2.0 2.0 2.0 2.0 2.0 换算交通量（pcu/d） 912 173 647 344 420 86 94

将上表折成小客车，对所给交通量进行换算：N= 912+173×1.5+（647+344+420+86+94）×2 =4353.5,设计年限为30年时，N= Nd= N0×(1+γ)n-1远期交通量32690辆，故设计为四车道高速公路即可满足交通量要求。

3沥青路面设计 ⑴设计年限内车道的累计轴次 根据《公路沥青路面设计规范》规定..路面设计以双轮组单轴载 100KN为标准轴载。标准轴载的计算参数按表3-1确定 表3-1 标准轴载计算参数 标准轴载名称 BZZ-100 标准轴载名称 BZZ-100

标准轴载P（KN） 100 单轮当量圆直径d（mm） 21.30 轮胎接地压强P（Mpa） 0.70 两轮中心距（cm） 1．5d 4

①轴载换算（弯沉及沥青层弯拉应力分析） 当以设计弯沉值设计指标及沥青基层层底拉应力验算时，凡前、后轴轴载大于25kN

的各级轴载iP的作用次数in均换算成标准轴载P的当量作用次数N。

35.4211)(ppnCCNii

K

i

式中：N— 以设计弯沉值和沥青层层底拉应力为指标时的标准轴载的当量次数； in— 被换算车型的各级轴载换算次数（次/日）； P— 标准轴载（kN）；

iP— 各种被换算车型的轴载（kN）； C1— 轮组系数，单轮组为6.4,双轮组为1.0,四轴组为0.38；

C2— 轴数系数。 K— 被换算车型的轴载级别。 当轴间距离大于3m时，按单独的一个轴载计算；当轴间距离小于3m时，双轴或多轴的轴数系数按下面公式计算： 111.21Cm

式中：m—轴数。

则其设计年限内一个车道上的累计量轴次eN：

1[(1)1]365teNN 式中 eN— 设计年限内一个车道的累计当量次数； t — 设计年限，由材料知，t=15年；

1N— 设计端竣工后一年双向日平均当量轴次；

— 设计年限内的交通量平均增长率，由材料知，γ=0.072；

— 车道系数，由材料知η=0.45。

则：次383949445.032.3986072.0365]1)072.01([365]1)1([151NNte次 ② 轴载换算（半刚性层弯拉应力分析） 验算半刚性基层层底拉应力的累计当量轴次时，凡轴载大于50KN的各级轴载iP的作

用次数in均按下式换算成标准轴载P的当量作用次数'N。