摘要
由于岩面骤然起伏、岩性突变等原因,控制桩端标高一致并且置于相同持力层将大大增加嵌岩桩设计与施工的难度。以某复杂岩溶场地建筑工程为例,使用有限元方法就嵌岩桩相邻单桩桩端持力层或桩端标高不同的设计方案展开分析,以探求其可行性。数值试验结果表明嵌岩桩相邻单桩沉降量和差异沉降量均较小,桩基静载试验和建筑物沉降监测数据反映方案可行。
Due to rock surface sudden ups and downs,lithological mutation,the design parameters of piles have the same elevation and loading lays of pile-tip,which will greatly increase the difficulty of design and construction about rock socketed pile.Taking a construction of complex karst area as an example,the design which the adjacent single pile about rock socketed pile have different elevation and loading lays of pile-tip have been studied through the finite element method,and its feasibility have been explored.The results show that the pile settlement and differential settlement are small.The static load test of pile and the building subsidence monitoring data indicate that the design scheme is feasible,which can provide reference for the design of rock socketed pile in similar karst area.
作者
马郧
李松
张德乐
朱佳
罗春雨
MA Yun;LI Song;ZHANG Dele;ZHU Jia;LUO Chunyu(Central Southern Geotechnical Design Institute Co.,Ltd.,Wuhan,Hubei 430071,China)
出处
《施工技术》
CAS
2019年第1期56-60,共5页
Construction Technology
基金
武汉市城建委科研项目(201546
武城建[2015]191)
关键词
桩基础
岩溶
嵌岩桩
沉降
变形
有限元分析
piles
karst
rock socketed pile
settlement
deformation
finite element analysis
