地梁-墙基组合式基础受力变形试验研究  

Test research on stress deformation of the new composite foundation of ground-beam and bench-table

作　　者：窦宝卫 段绪胜[1] 汪振[1] 满建鹏 

机构地区：[1]山东农业大学,泰安271018

出　　处：《建筑结构》2013年第S2期680-685,共6页Building Structure

基　　金：山东省科技发展计划项目(2012GNC11401);国家自然科学金重大研究计划(90915004);大学生创新创业训练计划项目(201210434015)

摘　　要：为改善地基的不均匀沉降问题,提出一种新型基础形式——地梁-墙基组合式基础。以地梁-墙基组合式基础为研究对象,开展了不同约束条件下组合式基础受压承载能力试验,以研究该类基础的破坏过程、破坏模式,并对地梁-墙基组合式基础破坏过程进行有限元分析。结果表明,数值模拟较好地预测了该基础的破坏形态,与物理试验吻合较好;证明了该基础能够很大程度上减小上部结构的挠度变形,从而减轻由于地基不均匀沉降引起的墙体开裂,验证了该课题在建筑结构方面的可行性。The new composite foundation of ground-beam and bench-table was put forward to improve the uneven settlement of the soft foundation.Selecting the new foundation as the research object,a compressive bearing capacity test under different constraint conditions has been conducted to study its failure process,failure pattern,while carry out the finite element analysis.The experiment results indicate that numerical simulation fitly predicts the failure pattern consistent with the physical experiments,proving that the foundation can largely reduce the deflection deformation of upper structure,which can reduce the cracking caused by uneven settlement of foundation and verify the feasibility of this project in the aspect of building structure.

关 键 词：地基不均匀沉降 地梁-墙基组合式基础 受压承载能力 有限元分析 

分 类 号：TU470[建筑科学—结构工程]