复杂地质条件下超高层建筑基础方案可行性分析  

Feasibility analyses of foundational schemes for high-rise buildings under complex geological conditions

作　　者：翟德志 周峰 屈伟 朱锐 周进峰 ZHAI Dezhi;ZHOU Feng;QU Wei;ZHU Rui;ZHOU Jinfeng(College of Transportation Science and Engineering,Nanjing Tech University,Nanjing 210009,China;Changshu Institute of Technology,Changshu 215500,China)

机构地区：[1]南京工业大学交通运输工程学院,江苏南京210009 [2]常熟理工学院,江苏常熟215500

出　　处：《南京工业大学学报（自然科学版）》2018年第5期104-111,共8页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家自然科学基金(51278244)

摘　　要：厦门某高层项目地质条件异常复杂,常规基础方案容易使建筑物基础产生严重不均匀沉降,带来安全隐患。为解决上述问题,该项目拟改变传统设计理念,采用可控刚度桩筏基础形式,充分利用天然地基较高的承载力,减少基础差异沉降,在解决复杂问题的同时,仍可获得较高的经济效益。本文使用商用有限元程序建立该项目地基基础共同作用三维有限元模型,详细分析复杂地质条件下该项目可控刚度桩筏基础的整体工作性状。分析结果显示可控刚度桩筏基础可有效控制不均匀沉降,其设计理念与方法可供同类工程借鉴和参考。The geological conditions of a high-rise project in Xiamen were extremely complex,the conventional foundation scheme could cause serious uneven settlement of building foundation.The controlled stiffness piled raft foundation could make full use of the natural foundation bearing capacity and reduced the foundation settlement with a high economic benefit.In this paper,the finite element method was used to establish the three-dimensional finite element model of the foundation of the project,and the whole working behavior of the pile raft foundation under complex geological conditions was analyzed.Results showed that the controllable stiffness of pile raft foundation could effectively controlled the uneven settlement and the design concept could be used as reference for the similar situations.

关 键 词：刚度调节装置 数值分析 差异沉降 桩土共同作用 

分 类 号：TU473.1[建筑科学—结构工程]