模块化建筑刚性桩复合地基共同作用试验分析  

Experimental Analysis on Interaction of Rigid Pile Composite Foundation of Modular Building

作　　者：张季超[1] 杨勇[1] Zhang Jichao;Yang Yong(School of Civil Engineering,Guangzhou University,Guangzhou 510006,P.R.China)

机构地区：[1]广州大学土木工程学院,广州510006

出　　处：《地下空间与工程学报》2024年第3期908-916,共9页Chinese Journal of Underground Space and Engineering

基　　金：广东省重点领域研发计划项目(2020B0101130005);广东电网有限责任公司研究项目(031000QQ00220012)。

摘　　要：本文依据某模块化示范楼,制作了简化后的1∶10的模块化建筑刚性桩复合地基的室外缩尺模型,考虑了上部模块结构与地基基础共同作用。通过模型试验分析了上部模块刚度变化对上部模块钢柱、筏板基础和刚性桩复合地基各受力体的影响。结果表明:模块化建筑中部柱轴力>边部柱轴力>角部柱轴力;随上部模块刚度的增加,中部柱轴力逐渐减小,边部柱和角部柱轴力逐渐增大;筏板基础中部沉降最大,边部沉降最小,整体沉降随上部模块楼层的增加逐渐增大;角部桩身轴力>边部桩身轴力>中部桩身轴力,桩身轴力沿着桩深度方向先增大后减小;桩身上部一定范围内产生负摩阻力。分析结果能够为模块化建筑单元构件设计及刚性桩复合地基基础优化设计提供参考。Based on a modular demonstration building,this paper makes a simplified 1:10 outdoor scale model of the rigid pile composite foundation of the modular building,considering the interaction between the upper module structure and the foundation.Through the model test,the influence of the stiffness change of the upper module on the steel columns of the upper module,the raft foundation and the rigid pile composite foundation are analyzed.The results show that the axial force of the central column of the modular building is greater than that of the side column and the axial force of the corner column;with the increase of the stiffness of the upper module,the axial force of the middle column gradually decreases,and the axial force of the side column and corner column gradually increases;The middle part of the raft foundation has the largest settlement,and the side part has the smallest settlement.The overall settlement gradually increases with the increase of the upper module floor;The depth direction of the pile increases first and then decreases;negative friction resistance occurs in a certain range on the top of the pile body.The analysis results can provide reference for the design of modular building unit components and the optimization design of rigid pile composite foundation.

关 键 词：模块化建筑 刚性桩复合地基 共同作用 上部模块刚度 模型试验 

分 类 号：TU470[建筑科学—结构工程]