考虑地基与基础协同作用的复合地基沉降计算方法研究  

Study on Settlement Calculation Method of Composite Foundation in View of Interaction Between Ground and Foundation

作　　者：王浩然[1] 郑浩琴 李杰 Wang Haoran;Zheng Haoqin;Li Jie(BGI Engineering Consultants Ltd.,Beijing 100038,China;China Academy of Building Research,Beijing 100013,China)

机构地区：[1]北京市勘察设计研究院有限公司,北京100038 [2]中国建筑科学研究院有限公司,北京100013

出　　处：《岩土工程技术》2022年第3期190-195,共6页Geotechnical Engineering Technique

摘　　要：建立在柔性基础假定条件下的复合地基沉降计算方法,因未考虑地基与基础相互作用影响下基底反力分布的不均匀性、最大基底反力与最大沉降位置的不重合性,导致计算值往往比实测值偏大。对两种考虑地基基础协同作用的复合地基沉降计算方法——SFIA法和结构计算软件“盈建科”的基础设计模块(弹性理论法)的计算原理分别进行了研究,并在实际工程中分别采用前述两种方法和柔性基础法进行地基沉降计算。与柔性基础法相比,此两种计算方法因考虑地基基础协同作用,地基最大沉降与差异沉降计算值更小,且更接近实测值。研究成果可为复合地基沉降计算提供借鉴和参考。For the settlement calculation method of the composite foundation based on the assumption of flexible foundation,the calculated value is often larger than the measured value due to the non-uniformity of base reaction distribution under the influence of foundation interaction and the non coincidence between the maximum base reaction and the maximum settlement position.Two composite ground settlement calculation methods considering foundation interaction were studied,including the SFIA method and elastic theory method used in the foundation design module of YJK building software.Foudation settlement calculation was conducted based on the above two methods as well as flexible foudation method.Compared with the flexible foundation method,the calculated values of the maximum settlement and differential settlement of the foundation are smaller and closer to the measured values due to the consideration of the interaction effect of the foundation.The research results can provide reference for the settlement calculation of composite foundation.

关 键 词：复合地基 基础 协同 基底压力 沉降计算 

分 类 号：TU470.3[建筑科学—结构工程]