某装配式钢筋混凝土简支T型梁桥

石家庄铁道学院毕业设计

某装配式钢筋混凝土简支T型梁桥

设计与计算

2009届工程力学系

专业工程力学

学号20052011

学生何强江

指导教师军

黄羚

完成日期 2009年6 月 2 日

毕业设计成绩单

毕业设计任务书

毕业设计开题报告

摘要

设于墩柱顶部的盖梁是钢筋混凝土简支梁桥下部结构的主要承力构件。本文以北京某一六跨25m连续简支T梁桥为工程实例，着重设计与分析计算了其盖梁部分。通过人工和ANSYS程序分别计算出盖梁在各种受力情况下的力，并根据荷载组合得到的最大弯矩或最大剪力的数据，选择构件型号及截面，验算构件的弯曲强度，抗剪强度和挠度。在计算力的时候，选择合适的方法计算横向分布系数是非常重要的。经过对比，电算比手算更加迅速及精确。盖梁的主要作用是支撑桥梁上部结构并将全部荷载传递到桥梁的基础。盖梁的设计是所有桥梁设计中的重要环节，必须认真对待。

关键词：盖梁设计配筋验算

Abstract

Bent cap located at the top of the pillar are the primary load bearing component of the substructure of reinforced concrete simply supported bridge．In this paper the design and analysis of bent cap is focused based on the engineering background of a six spans consecutive 25-meter bridge by simply supported T-beam in Beijing. The internal forces of bent cap are calculated by artificial and ANSYS software in various loading situations respectively. Based on moment or shearing maximum which derived by the composed load，the component models and cross-section are chosed. At the same time, the component deflection, bending strength and shearing strength are checked. While the internal forces are calculated, it is important to choose suitable way for the calculation of horizontal distribution coefficient. To contrast, by the program is more quickly and precise than by artificial．The main role of bent cap are for supporting the upper structure of the bridge and delivering the full loading through the pillar to the basis structure. It is an important component element of bridge design, which the designer should be handled carefully.

Key words：the design of capping beams reinforcement placement checking

第1章绪论 (1)

1.1 课题研究的目的及意义 (1)

1.2 国外研究现状 (1)

1.3 论文研究的容及设计思路 (2)

1.3.1 主要研究容 (2)

1.3.2 设计的总体思路 (2)

第2章装配式钢筋混凝土T形梁桥简介 (3)

2.1 构造布置 (3)

2.1.1 主梁的布置 (3)

2.1.2 横隔梁的布置 (3)

2.2 截面尺寸 (3)

2.2.1 主梁梁高和肋宽 (3)

2.2.2 主梁翼板尺寸 (4)

2.2.3 横隔梁尺寸 (4)

2.3 主梁钢筋构造 (4)

2.3.1 装配式T形简支梁桥的钢筋分类 (4)

2.4 装配式主梁的联结构造 (7)

第3章某大桥设计方案 (8)

3.1 工程基本概况 (8)

3.1.1 工程概况 (8)

3.1.2 工程地质概况 (8)

3.1.3 设计依据及规 (9)

3.1.4 桥梁设计标准 (9)

3.2 桥梁设计的总体布署 (10)

3.2.1 下部结构设计布署 (10)

3.2.2 上部结构设计步署 (10)

3.2.3 附属结构设计步署 (10)

第四章桥墩盖梁计算 (11)

4.1 设计资料 (11)