北京交通大学学报2017，Vol.41Issue(1)：34-40,7.DOI:10.11860/j.issn.1673-0291.2017.01.006
考虑多栋相邻高层建筑同时施工的桩筏基础-地基相互作用分析
Analysis of interaction between pile-raft foundation and soil considering adjacent high-rise buildings simultaneous construction
摘要
Abstract
By comparing the numerical calculation results of two models,single high-rise building and its high-rise buildings system,the effect on super structure-foundation-soil interaction of adjacent high-rise buildings simultaneous construction is analyzed based on a large number of the measured data of field research using FLAC-3D,including the deformation and mechanical characteristics of pile-raft foundation and soil.The results show that when considering the interaction,adjacent high-rise buildings constructed simultaneously will cause the additional stress superposition and spreading around;the maximum settlement areas occurs an offset and the differential settlementis increased;the raft compressive stress is decreased,while the tensile stress is increased;the pile axial force is increased obviously,especially the pile-top axial force.The effect of adjacent high-rise buildings simultaneous construction in medium-term construction is more obvious.关键词
桩筏基础/共同作用/相邻高层建筑/同时施工/数值计算Key words
pile-raft foundation/interaction/adjacent high-rise buildings/simultaneous construction/numerical calculation分类
建筑与水利引用本文复制引用
商卫东,杨光昌,白冰,聂庆科..考虑多栋相邻高层建筑同时施工的桩筏基础-地基相互作用分析[J].北京交通大学学报,2017,41(1):34-40,7.基金项目
国家重点基础研究发展计划(973计划)(2015CB057800)National Basic Research Program of China (973 Program)(2015CB057800) （973计划）
