摘要
对系杆拱桥吊杆更换过程进行了详细计算,对比分析了等步长更换吊杆和变步长更换吊杆两种施工方法,结果表明,变步长方法比等步长方法更为安全,尤其对于旧吊杆病害较多、锚头锈蚀严重的情况。根据背景桥梁的实际情况,提出使用变步长张拉临时吊杆和割断相应钢丝的方法。
In this paper, the suspender replacement process of tied arch bridge is calculated in detail. Suspender replacement methods with equal step and variable step size are comparatively studied. The result shows that the replacement method with variable step size is safer than the replacement method with equal step size especially for the suspenders with many diseases and the anchor head seriously corroded. According to the actual situation of the bridge in the background, the authors put forward the replacement method with variable step size in the bridge reinforcement project.
出处
《施工技术》
CAS
北大核心
2013年第23期25-29,共5页
Construction Technology
基金
广东省自然科学基金项目(S2012040007317)
广东省科技计划项目(2010A040308005)
广东高校优秀青年创新人才培养计划项目(2012LYM_0101)
关键词
桥梁工程
系杆拱桥
吊杆更换
优化
bridges
tied arch bridges
suspender replacement
optimization
