清水河简支梁桥设计

成都理工大学工程技术学院毕业论文

清水河简支梁桥设计

作者姓名：王荣森

专业名称：土木工程

指导教师：王刚 讲师

清水河简支梁桥设计

摘要

随着人们的生活水平提高，各种物质、精神文化的交流日趋变多，各地方的文化、习俗交流更加频繁。一个好的交通对这些是很重要的，可以更好的促进这些元素的增强。道路、桥梁更是先驱般的改变着这些元素。

该论文写的名字叫清水河简支梁桥，标准跨径为15米×3，净宽：行车道7米和人行道2×0.75米，采用重力式桥墩和桥台。桥梁全长45米，桥面总宽8.5米，桥面纵坡为：0.3%，横坡1.5%桥跨轴线为直线，设计荷载标准为：公路—Ⅱ级，人群荷载为3kN/m2。

本文主要阐述了该桥设计和计算过程，首先对方案比选，确定采用混凝土简支T形梁桥，对主桥进行总体结构设计，然后对上部结构进行内力、配筋计算，再进行截面复核，斜截面抗剪、抗弯承载力验算以及验算，最后进行下部结构设计。同时，也给出了各部分内容相关的表格与图纸。通过这次设计不但了解设计桥梁的各个步骤，而且也能熟练的运用autoCAD进行制图。

桥梁的未来是光明的，给我们生活带来了便利，值得我们进一步学习和研究。

关键词：钢筋混凝土 T形简支梁桥 重力式桥墩 结构设计

- I -

清水河简支梁桥设计

Abstract

As people's living standards improve, all kinds of material, spiritual and cultural exchanges increasingly more of each place The culture, customs, communication more frequent. A good traffic for these is very important, can better promote these elements. Road and bridge is pioneer of changing these elements.

The thesis is the name of the qingshui river beam bridge, standard span is 15 m x 3, net width: Driveway 7 meters and sidewalks, 2 x 0.75 meters, USES the gravity pier and abutment. Total 8.5 meters wide on the bridge span 45 meters, surface, bridge deck longitudinal slope is: 0.3%, 1.5% cross slope bridge across the axis for the straight line, design load standard is: road - Ⅱ level, population load for 3 kN / m2.

This article mainly expounds the bridge design and calculation process, first of all, scheme comparison, determine the concrete simply-supported T girder bridge, the bridge, carries on the overall structure design, and then on the upper structure internal force and reinforcement calculation, again for cross section review, flexural bearing capacity of oblique section shear, checking and crack checking, finally carries on the lower part structure design. At the same time, also gives the content related to form the parts and drawings. Bridge through this design not only to understand the steps, but also able to skillfully use autoCAD for drawings.

Bridges in the future is bright, bring convenience to our life, is worth our further study and research.

Keywords：The reinforced concrete，T beam bridge，Gravity pier，The structure design

- II -

清水河简支梁桥设计

目录

摘要 ................................................................................................................ I Abstract ......................................................................................................... II 目录 .............................................................................................................. III 前言 ................................................................................................................ 1 1绪论 ............................................................................................................. 2

1.1课题的研究目的及意义 ................................................................... 2 1.2国内外研究现状 ............................................................................... 2 1.3本设计的研究内容及设计思路 ....................................................... 3 1.3.1研究内容 ..................................................................................... 3 1.3.2设计思路 ..................................................................................... 3 2桥型方案选择 ............................................................................................. 4

2.1设计技术标准 ................................................................................... 4 2.2方案比较 ........................................................................................... 4 2.2.1比较原则 ..................................................................................... 4 2.2.2方案编制 ..................................................................................... 4 2.3方案评选 ........................................................................................... 6 3桥梁设计说明 ............................................................................................. 8

3.1基本资料 ........................................................................................... 8 3.2材料 ................................................................................................... 9 3.3横截面布置 ....................................................................................... 9 4主梁内力计算 ........................................................................................... 11

4.1恒载集度 ......................................................................................... 11 4.2恒载内力计算 ................................................................................. 12 4.3活载内力计算 ................................................................................. 13 4.3.1汽车荷载冲击系数 ................................................................... 13 4.3.2 计算荷载横向分布系数 .......................................................... 14 4.3.3 计算活载内力 .......................................................................... 18 4.4主梁内力组合 ................................................................................. 23

- III -

清水河简支梁桥设计

5配筋与验算 ............................................................................................... 25

5.1配置主梁受力钢筋 ......................................................................... 25 5.2截面复核 ......................................................................................... 27 5.3斜截面抗剪承载力验算 ................................................................. 28 5.4持久状态斜截面抗弯极限承载力验算 ......................................... 39 5.5持久状况正常使用极限状态下裂缝宽度验算 ............................. 39 6支座设计 ................................................................................................... 42

6.1支座资料 ......................................................................................... 42 6.1.1确定支座的平面尺寸 ............................................................... 42 6.1.2确定支座的厚度 ....................................................................... 43 6.1.3 验算支座的偏转情况 .............................................................. 44 7桥台桥墩设计 ........................................................................................... 46

7.1桥台设计资料及基本数据 ............................................................. 46 7.2桥台与基础构造及拟定的尺寸 ..................................................... 47 7.3桥墩设计资料 ................................................................................. 47 7.4拟定桥墩尺寸 ................................................................................. 47 结论 .............................................................................................................. 49 致谢 .............................................................................................................. 50 参考文献 ...................................................................................................... 51 附图 .............................................................................................................. 50

- IV -

本文来源：https://www.bwwdw.com/article/evlt.html