基于流变理论的高层密集建筑群最佳建筑容积率  

Best floor area ratio of high density buildings based on rheological theory

作　　者：宋寿鹏[1] 唐益群[1] 

机构地区：[1]同济大学地下建筑与工程系,上海200092

出　　处：《中南大学学报（自然科学版）》2012年第6期2349-2356,共8页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(40872178);上海市重点学科(地质工程)建设资助项目(B308)

摘　　要：基于地基土的流变性质,运用FLAC3D软件建立密集高层建筑群地面沉降模型,考察不同建筑容积率条件下桩筏基础中桩基受力变化及区域地面沉降规律等。模拟结果表明:与单栋建筑物情况相比,桩筏基础中各桩的力学性质均受其他建筑物的影响,各桩位置的差异造成各桩身应力叠加效应和桩侧摩阻力的差异;密集建筑群的最大影响范围随建筑层数的增加而增大,最大沉降处仍为建筑物自身;在控制地面沉降的条件下,最佳建筑容积率的取值范围为0.7～1.2。Based on the rheological properties of foundation soils,the land subsidence model of intensive high-rise buildings was established by FLAC3D software to study the pile force changes in the pile-raft foundation and regional land subsidence at different floor area ratios.The simulation results show that compared to the single building,piles mechanical properties are influenced by the other buildings,and the differences of piles stacked press and skin friction of piles are caused by the location of piles.The maximum influence scope of intensive buildings increases with the increase of the number of layers,and the building settlement is still the largest.In the condition of land subsidence controlled,the best building floor area ratio is 0.7-1.2.

关 键 词：工程性地面沉降 流变 建筑容积率 

分 类 号：P642[天文地球—工程地质学]