山东建筑大学学报2017，Vol.32Issue(2)：152-158,7.
大面积堆载下桩地下连续墙组合基础理论分析
Theoretical analysis of piles-diaphragm wall combined foundation under large area loading
摘要
Abstract
The new composited foundation of the pile-diaphragm wall has high horizontal bearing capacity.There is social and economical significance for the research of the structure.The theories of deformation and mechanical behaviours of new combined foundation under large area loading are analyzed.The checking computations of stability of combined foundation are proposed.Inter force and deformation is calculated based on programming of theory of the finite element,and comes up with some elements impacting on bending moment and displacement.At the same time,the force and deformation properties of the whole combined foundation and the single piles-wall foundation are calculated for comparison.Calculation results show that the stress shape of combined foundation is"belly shaped"and the deformation of foundation is the overall tilt deformation;the maximum of bending moment is in near the connected point of the piles and the wall;in influencing factors,degree of large area loading is the foremost,the wall height,pile diameter,pile number are following behind it.The change of pile length,especially when the pile is up to 10 m,has little effect on the combined foundation.The mechanical properties are different between single piles-wall and the whole combined foundation.The overall stress of combined foundation is more obvious,and shows rigid deformation. But the stress of single piles-wall concentrates in the wall under the ground 5 m,and shows flexure deformation.The whole combined foundation has the higher horizontal bearing capacity compared with the single piles-wall.关键词
大面积堆载/桩-地下连续墙/组合基础/侧向变形Key words
large area loading/piles-diaphragm wall/combined foundation/structure lateral displacement分类
生物科学引用本文复制引用
王建强,魏焕卫,孙川,张伟,杨庆义..大面积堆载下桩地下连续墙组合基础理论分析[J].山东建筑大学学报,2017,32(2):152-158,7.基金项目
2014年山东建筑大学横向课题项目(山东电力工程咨询院有限公司,K22014016) （山东电力工程咨询院有限公司,K22014016）
