摘要
通过现场施工监测获取了围堰钢管桩和内支撑钢管的变形和应力随时间变化情况,监测结果反映邻近既有桥梁和堤防的特殊受荷情况对围堰结构整体受力情况有较大影响。同时,变形和应力最大测试变化量均小于规范限值,围堰结构体系的强度、刚度和布设形式满足基坑施工要求。
The deformation and stress changes over time of steel pipe pile and the internal supporting steel tube were gained through the field construction monitoring according to the particular circumstances of its nearby the existing bridge and embankment.The monitoring results reflect the special loading situation nearby the existing bridge and embankment has great influence on the whole stress condition of cofferdam structure.At the same time,the largest measuring variation of deformation and stress are less than the standard limit.The strength,stiffness and layout form of cofferdam structure meet the requirements of foundation pit construction,which can provide references for the similar engineering constructions.
出处
《建材世界》
2017年第4期128-131,共4页
The World of Building Materials
关键词
钢管桩围堰
内支撑体系
邻近既有桥梁
邻近堤防
施工监测
steel pipe piles cofferdam
internal supporting system
nearby the existing bridge
nearby the embankment
construction monitoring
