摘要
三门健跳大桥是一座中承式钢管混凝土肋拱桥,采用桥面兜吊法施工技术对16根短吊杆进行更换。由于桥梁结构受力复杂,故采用了有限元软件MIDAS/Civil对整个吊杆更换过程进行了模拟,并采用压力传感器对索力进行监控。研究表明,桥面兜吊法更换过程中索力变化比较小,更换完成后吊杆索力和桥面线形基本与原结构相同。
Jiantiao Bridge is a semi-supported arch bridge with concrete filled steel tube,and sixteen short suspenders are replaced with bridge deck hanging method. Since the bridge structure stress is complex,the finite element software MIDAS / Civil for the simulation of the whole process of suspender replacement process is used,and pressure sensor for monitoring cable force is used. Research shows that the cable force change is small in the process of replacement,after replacement completion,suspender force of suspender and the elevation of deck is basically the same with the original structure.
出处
《施工技术》
CAS
北大核心
2014年第23期69-72,共4页
Construction Technology
基金
浙江省交通厅项目(2012H47)
关键词
桥梁工程
拱桥
吊杆
数值模拟
施工技术
bridges
arch bridges
suspenders
simulation
construction
