岩溶地区某高层建筑复合地基设计  

Composite Foundation Design of a High-rise Building in Karst Area

作　　者：冯俊杰 柳冰强 FENG Junjie;LIU Bingqiang(Pearl River Enterprises Group Guangzhou 510098,China)

机构地区：[1]广州珠江实业集团有限公司,广州510098

出　　处：《广东土木与建筑》2023年第6期13-15,共3页Guangdong Architecture Civil Engineering

摘　　要：介绍了1栋位于岩溶地区高层建筑的复合地基设计,场地内石灰岩岩溶中等发育,溶洞分布较多,洞高大,综合考虑项目经济性和施工便利性,基础采用复合地基上的筏板基础,计算时考虑地基土作用和筏板的整体弯曲变形和上部结构刚度影响,采用有限元软件对筏板基础进行了分析和设计,并对溶(土)洞进行了处理。相对于传统设计方法,该方法可改进地基土与筏板相互作用的模拟,考虑土的非线性本构,并模拟真实场地土的情况和筏板的真实变形,更接近筏板实际受力情况,比传统设计方法提高安全性和经济性。可为相关工程实践提供参考。Introduces a composite foundation design for a high-rise building located in a karst region.The site features moderately developed limestone karst with numerous and large karst caves.Considering the project's economic feasibility and construction convenience,the foundation adopts a raft foundation on composite soil.The calculations take into account the interaction between the foundation soil and the raft,the overall bending deformation of the raft,and the stiffness influence of the upper structure.The raft foundation is analyzed and designed using finite element software,and the karst(soil)caves are processed.Compared to traditional design methods,this approach improves the simulation of the interaction between the foundation soil and the raft,considers the non-linear behavior of the soil,and simulates the actual soil conditions and raft deformation on-site,making it closer to the actual stress conditions of the raft.It enhances safety and economic efficiency compared to traditional design methods and can provide a reference for related engineering practices.

关 键 词：复合地基 筏板基础 有限元分析 基础设计 溶(土)洞处理 

分 类 号：TU470.3[建筑科学—结构工程]