钢桥结构设计与施工控制-市政工程专业论文.docxVIP

钢桥结构设计与施工控制 钢桥结构设计与施工控制 摘要 本文在总结国内外钢桥设计研究、施工控制技术的基础上，以池州清风桥为工程背 景，就钢桥的上部结构设计、旖工控制问题，有针对性的展开研究。本论文简述池州清 风桥的工程概况；论述了钢桥的上部结构设计特点，确定池州清风桥的结构体系、关键 部位尺寸，选择合理的施工方法；简要介绍MDAS／Civil空间有限元分析软件，以及本 论文设计用到的内容，并采用MDAs／Civil空间有限元软件对清风桥路桥建模，并对成 桥阶段的受力状态进行了分析，研究成桥阶段的特征值分析和屈曲分析，以及梁体与拱 体在自重和六个荷载工况组合下的应力情况。并验算了结构的成桥应力。采用正装 施工控制法，分四个施工阶段进行施工阶段的仿真模拟计算。分别研究了四个施工阶段 的结构内力和变形，确定了主梁、边梁和三片拱的一般预拱度。 关键词：钢桥钢箱梁拱施工控制预拱度内力 Structure Structure Design and Construction Control of Steel Bridge Abstract Based on summing up the design and construction control technology of steel bridge of home and abroad，taking ChiZhou QingFeng steel bridge as a project background，this paper has particular study the designing and construction controlling for the steel bridge．The following aspects have been studied the designing and construction controlling for the steel arch bridge．Stating the general situation of ChiZhou QingFeng steel bridge’S projecting；Discussing the characteristic of design for the steel bridge，the system of structure， the size of the bond parts and the best construction project was determined；Expatiation the application ofMIDAS／Civil in the modeling ofChiZhou QingFeng steel bridge，and using the the finite element analysis sotFceare MIDAS／Civil to analyze the structure of the steel box arch bridge；Research the Eigenvalue Analysis and the buckling analysis at Completion Stage．Analysing the stress of the girder and arch under the stage of self-weight situation and six load situation．Checking the stree of the structure，Adopting the construction control method to simulate calculation in the four construction stages．Studied internal force and transform of four construction stages，make sure the general precamber of the main beam，the side beam and three arches． Keywords：steel bridge，steel box girder,arch，construction control，precamber，internal force 插图清单图1一l池州清风路钢拱桥 插图清单 图1一l池州清风路钢拱桥 图2-1清风路横断面布置图 ，0 图2．2清风路现状平面图 0 图3-1池州清风路钢箱拱桥主桥总体布置图 图3—2主梁截面 图3．3边梁截面 n他B 图3-4横梁截面 n 图3-5主拱截面 H 图3-6横拱截面 ．． 图4．1分析模型 ．． 图4-