土工基础

›› 2018, Vol. 32 ›› Issue (3): 243-247.

• 工程实录 • 上一篇    下一篇

上海中心桩筏基础优化计算分析

曾朝杰1,2   

  1. （1.上海同建强华建筑设计有限公司, 上海 200072；2.上海新华国际岩土技术有限公司，上海 200072）
  • 收稿日期:2018-04-09 修回日期:2018-04-19 出版日期:2018-06-22 发布日期:2018-06-26
  • 作者简介:曾朝杰(1971-)，男，高级工程师，一级注册结构工程师，研究方向为地基基础与上部结构共同作用，桩基变刚度调平，无梁楼盖计算技术。

Pile-Raft Foundation Optimization Analysis of Shanghai Tower

ZENG Chaojie1,2   

  1. （1.Shanghai TongjianQianghua Architectural Design Co., Ltd., Shanghai 200072；
    2.Shanghai Xinhua International Geotechnical Engineering Co., Ltd., Shanghai 200072）
  • Received:2018-04-09 Revised:2018-04-19 Online:2018-06-22 Published:2018-06-26

摘要： 上海中心为我国已经建成的第一高楼，采用巨型柱劲性混凝土框架-核心筒体系，由于面积仅占20%核心筒基础集中承担了40%上部荷载，因此按照基础变刚度调平设计理念对该项目采用了长短桩基础，并采用了“超明星地基沉降及强度计算软件”进行优化计算分析，耦合自编Mindlin中厚板有限元程序进行变基床系数法迭代分析计算，结果表明迭代法计算较快收敛，长短桩变刚度理论的应用有效降低基础底板差异变形和内力，优化结果令人满意。

关键词: 上海中心, 变刚度调平, 变基床系数法, 迭代法

Abstract: The Shanghai Tower is the highest building in China.  The rigid reinforced concrete column frame and core tube structure system consists of only 20% of the total area (core tube part) but it carries over 40% of the total upper structure load. The variable foundation stiffness approach was applied with piles of variable length at correspondent locations. The structure design was performed with commercial software “Super Star Foundation Strength and Deformation” by implementing the user-defined variable Winkler coefficient iteration subroutine program with Mindlin theory for medium to thick concrete plates. The results indicated that a fast convergent can be obtained and the variable footing stiffness by installing variable lengths of piles can effective adjust the differential stress and deformations.

Key words: Shanghai Tower, Variable Stiffness Adjustment, Variable Winkler Coefficient Method, Iterative Method