| 广州东平水道主桥连续钢桁拱悬拼架设分析 |
| |
| 引用本文： | 严定国. 广州东平水道主桥连续钢桁拱悬拼架设分析[J]. 华中科技大学学报(城市科学版), 2011, 28(1) |
| |
| 作者姓名： | 严定国 |
| |
| 作者单位： | 铁道第四勘察设计院桥梁处,湖北,武汉,430063 |
| |
| 摘 要： | 广州东平水道特大桥其主跨结构为(99+242+99)m的连续钢桁拱,被誉为武广客运专线"第一跨".该桥具有如下特点:三片桁主,桁中心距14m,空间效应明显;四线铁路,荷载较大,抗疲劳设计是重点;拉索辅助悬拼架设,悬臂长度121m,需保证结构抗倾覆稳定性;无应力多点合龙,体系转换复杂,施工难度较高.本文从钢析拱施工架设特点出发,对架设过程中采用的边跨压重及塔吊、拉索等辅助架设方法进行分析,对边支座顶落梁、纵向预偏等合龙措施进行探讨;根据计算提出合理的架设方法及可行的合龙措施,并检算所有工况杆件强度、稳定应力,确保设计杆件在施工阶段安全可靠.其计算成果对今后钢析拱的设计、施工等有一定参考价值.
|
| 关 键 词： | 钢桁拱 顶落梁 纵向预偏 合龙 |
Analysis of Cantilever Erection of Guangzhou Dongping Channel Continuous Steel Truss Arch Bridge |
| |
| YAN Ding-guo. Analysis of Cantilever Erection of Guangzhou Dongping Channel Continuous Steel Truss Arch Bridge[J]. Journal of Huazhong University of Science and Technology, 2011, 28(1) |
| |
| Authors: | YAN Ding-guo |
| |
| Affiliation: | YAN Ding-guo(Bridge Department,China Railway Siyuan Survey and Design Group Co Ltd,Wuhan 430063,China) |
| |
| Abstract: | The Channel continuous steel truss arch bridge in Dongping of Guangzhou,with the main span of(99+242+99)m,was known as the first cross in the Special Passenger Railway Line of Wuhan-Guangzhou.The bridge has the following characteristics: firstly,its arch with obvious spatial effect is composed of triple main trusses with a center distance of 14m.Secondly,it is a four-lane railway bridge with large traffic loads,and thus the associated fatigue design is a key issue.Thirdly,the cable-supported cantilever erec... |
| |
| Keywords: | steel truss arch bridge jacking up or descending truss longitudinal previous movement closure |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
