斜拉桥牵索挂篮有限元计算与静载试验对比分析研究  

Research Analysis of Finite Element and Static Load Test of Guyed Form Traveler for Cable-stayed Bridge

作　　者：叶锡钧[1] 孙卓[1] 颜全胜[2] 

机构地区：[1]广州大学土木工程学院,广东广州510060 [2]华南理工大学土木与交通学院,广东广州510641

出　　处：《公路工程》2017年第2期108-110,115,共4页Highway Engineering

基　　金：国家自然科学基金(51278137);广州大学2016年新苗计划(2608)

摘　　要：甘竹溪特大桥是一座主跨210 m的预应力砼斜拉桥,采用牵索挂篮施工。为确保桥梁施工过程中结构的安全性和立模标高的精确确定,建立牵索挂篮的空间有限元模型,按实际施工阶段计算其应力和挠度,并与静载试验实测数据进行比较分析。结果表明,该挂篮设计合理,在结构强度、刚度和稳定性方面均能满足规范要求,并有较高的应力安全储备,理论值与实测值的总体变化趋势一致,可根据挠度实测结果确定立模标高。To ensure the security of the cantilever construction and elevation template adjustment for cable-stayed bridge, the spatial finite element model of guyed form traveler for Gan-zhu-xi cable- stayed bridge was built. At first, two models are considered under actual construction stage, then a static loading test was carried out. The computational results was in consistent with those from the field tested. It also showed that the optimal design was reliable and the operational performance could meet the con- struction requirements. Elevation template can be determined by the deflection measured results.

关 键 词：斜拉桥 牵索挂篮 有限元模型 静载试验 

分 类 号：TU311[建筑科学—结构工程] O327[理学—一般力学与力学基础]