30m先简支后连续T型梁桥+文献综述
关键词 预应力 先简支后连续 结构计算 桥梁设计
毕业论文设计说明书（论文）外文摘要
Title Design of a PC Simple Supported-Continuous span T—beam bridge with Main Span of4×30m
Abstract
This paper is the design of a PC simple supported-continuous prestressed concrete T beam bridge with main span of 30 m.The first part of this paper ,according to the engineering survey data, technical requirements, and the rules and regulations of design, and reference of the existing bridge design example ,I made three design schemes for the bridge.Then I got the recommended scheme through the comparison of economic construction technology . The second part, complete structure design calculation, including the size of the proposed using AutoCAD, Using Dr bridge structure internal force calculation, reinforcement design, and the calculation of the section, and according to the result of bridge, bridge of fine-tuning, to makes the safety and stability of the structure.
Keywords： prestressed , simple supported-continuous bridge, structural calculation, bridge design
目录
1. 绪论 1
1.1预应力混凝土先简支后连续梁桥综述 1
1.1.1结构特点 1
1.1.2体系优点 1
1.2设计说明 2
1.2.1 工程简介 2
1.2.2 设计标准与规范 2
1.2.3 基本设计资料 3
1.2.4 主要材料 3
1.2.5 工程地质条件 4
1.2.6 桥梁设计要点 4
1.2.7施工要点 5
1.3 毕业设计的目的与意义 6
3. 上部结构设计与计算 17
3.1 设计基本资料 17
3.2 设计要点及结构尺寸拟定 20
3.2.1 设计要点 20
3.2.2 结构尺寸拟定 21
3.3 关键输入数据说明 31
3.3.1 桥梁跨径及桥宽 31
3.3.2 设计荷载 31
3.3.3 桥面铺装荷载 31
3.3.4 主梁荷载横向分布系数 31
3.3.5 冲击系数 37
3.3.6 施工及使用阶段升、降温 38
3.3.7 支座不均匀沉降 38
3.3.8 非线性温度 38
3.4 结构模型与计算图式 38
3.3.1 结构模型 38
3.3.2 计算图式 39
3.3.3 支反力 39
3.3.4 施工阶段计算 40
3.5.1 跨中、支点截面内力影响线 44
3.5.2 活载内力计算 49
3.6 次内力计算 50
3.6.1 温度次内力计算 50
3.6.2 支座沉降次内力计算 51
3.7 内力组合 51
3.7.1 承载能力极限状态内组合 51