多塔楼下整体大面积筏板基础设计及反力测试分析

›› 2011, Vol. 32 ›› Issue (S2): 366-371.

多塔楼下整体大面积筏板基础设计及反力测试分析

宫剑飞^{1, 2}，朱红波^{1, 2}，石金龙^{1, 2}，谢高远³，邸道怀^{1, 2}，周圣斌^{1, 2}

1. 中国建筑科学研究院，北京 100013；2. 中国建筑科学研究院建筑安全与环境国家重点实验室，北京 100013； 3. 中国电子工程设计院，北京 100840

收稿日期:2011-04-19 出版日期:2011-08-10 发布日期:2011-08-26
作者简介:宫剑飞，男，1970年生，博士，研究员。主要从事高层建筑筏形与箱形基础和上部结构、基础与地基共同作用方面的研究工作
基金资助:
住建部研究开发项目（No. 2007-k6-6）

Design and in-situ testing analysis of contact pressure for large-area thick raft foundation under multi-tower buildings

GONG Jian-fei^{1, 2}, ZHU Hong-bo^{1, 2}, SHI Jin-long^{1, 2}, XIE Gao-yuan3, DI Dao-huai^{1, 2}, ZHOU Sheng-bin^{1, 2}

1. China Academy of Building Research, Beijing 100013, China; 2. State Key Laboratory of Building Safety and Environment, China Academy of Building Research Beijing 100013, China; 3. China Electronics Engineering Design Institute, Beijing 100840, China

Received:2011-04-19 Online:2011-08-10 Published:2011-08-26

摘要/Abstract

摘要： 多个塔楼下整体大面积筏板基础反力分布特征仅局限于室内模型试验资料。通过北京三里屯SOHO工程地基反力原位测试并与已有模型试验数据对比分析，结果表明，当地基土比较均匀、上部结构刚度较好，高层外框柱荷载及柱间距的变化不超过20%，核心筒荷载与高层外框柱总荷载相差不超过10%，且筏板厚度超过1/6柱跨时，计算高层下筏形基础的内力时，基底反力可按直线分布；裙房基础可有限扩散高层建筑荷载，实际工程的原位测试结果表明，高层荷载的扩散范围约为2跨裙房的距离，3跨裙房之外没有影响；对于多个高层建筑下整体大面积筏板基础的地基反力可应用叠加原理计算

关键词: 整体大面积筏板基础, 基础优化, 原位测试, 地基反力, 叠加原理

Abstract: The distribution characteristic of contact pressure of large-area thick raft foundation under multi-tower buildings is always limited to indoor test analysis. This paper comparatively analyzes the in-situ test data from outdoor SOHO project located in Sanlitun, Beijing and the existed indoor test data. The results indicate that when the foundation soil of buildings is uniform distribution, the stiffness of upside structure is greater and the variation between intercolumniation and the load of outer column of frame is not over than 20 percentage as well as the load difference between the outer columns of frame and core-tube less than 10 percentage, when the ratio of the raft thickness to the column span is larger than 1/6, the calculation of contact pressure of raft foundation under tower buildings can be regarded as linear distribution and the load of tower buildings can be diffused by the annex foundation. The situ test in engineering practice indicates, the diffuse range of the load of tall buildings is around two spans of annex, the diffusing effect is rare over than three spans. The principle of superposition can be applied to calculate contact pressure of large-area thick raft foundation in multi-tower buildings

Key words: large-area thick raft foundation, foundation optimizing design, in-situ test, contact pressure of foundation, principle of superposition

中图分类号:

TU 471

宫剑飞，朱红波，石金龙，谢高远，邸道怀，周圣斌. 多塔楼下整体大面积筏板基础设计及反力测试分析[J]. , 2011, 32(S2): 366-371.

GONG Jian-fei , ZHU Hong-bo , SHI Jin-long , XIE Gao-yuan , DI Dao-huai , ZHOU Sheng-bin. Design and in-situ testing analysis of contact pressure for large-area thick raft foundation under multi-tower buildings[J]. , 2011, 32(S2): 366-371.

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