摘要
现存有既有建筑物修建于填土不密实的地带,导致既有建筑物发生开裂和倾斜的情况,严重影响结构在使用上的安全性。文章结合具体工程详细阐述了微型桩联合肋梁法加固填土不密实地基基础的设计方法,同时提出了倒牛腿对联合肋梁的配筋计算,运用有限元模拟分析了基础加固后的应力分布和变形特性,验证了倒牛腿假设的正确性。
Existing buildings were built in areas where the earth was not compacted.This causes existing buildings to crack and tilt.The security of the structure in use is seriously affected.In this paper,the design method of micro-piles combined with ribbed beams to reinforce the foundation of uncompacted foundation was described in detail.Finite element simulation was used to analyze the stress distribution and deformation characteristics after foundation reinforcement,and the correctness of the inverted leg hypothesis was verified.
引文
[1] GB 50007—2011,建筑地基基础设计规范[S].北京:中国建筑工业出版社,2011.
[2] 付艳青,魏焕卫,孔军,等.基于微型桩托换的建筑物基础加固设计[J].山东建筑大学学报,2014,29(3):230-234.
[3] JGJ 123—2012,既有建筑地基基础加固技术规范[S].北京:中国建筑工业出版社,2012.
[4] JGJ 94—2008,建筑桩基技术规范[S].北京:中国建筑工业出版社,2008.