(1 太原理工大学建筑与土木工程学院，太原 030024； 2 太原市建筑设计研究院，太原 030002)
［摘要］通过由CFG桩与二灰桩组合而成的长短桩复合地基处理某30层高层建筑软弱液化地基的工程实例，探讨了这一类型复合地基的承载力与沉降变形的设计计算方法，并与建筑物实测的承载力、沉降值进行了对比研究。从中可看出：这种处理方法使原地基土消除了液化，满足了上部结构对地基承载力、变形的要求，同时也验证了所提出的设计计算方法的可行性。
［关键词］长短桩复合地基；高层建筑；液化地基；承载力；沉降
Application and analysis of long-short-pile composite foundation of high-rise building in soft soil
Ge Xinsheng1,Li Bin1,Hu Zhiqiang2(1 College of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China;2 Taiyuan Institute of Architectural Design and Research, Taiyuan 030002, China)
Abstract:A case of the long-short-pile composite foundation in liquefied soil under a 30stoeryed high-rise building is presented, in which the long and short piles are made of CFG and lime. A new design method of the foundation treatment is introduced, and the calculated value is compared with the actual measurement. The results show that the liquefaction of soft ground is eliminated and the demand of load and settlement for upper building is met. At the same time, it is proved that the design method is available.
Keywords:long-short-pile composite foundation; high-rise building; liquefied soil; bearing capacity; settlement
国家自然科学基金资助项目(50678110)，山西省自然科学基金资助项目(2007011069)。
作者简介：葛忻声，副教授，工学博士，一级注册结构工程师，Email:gexs1@yahoo.com.cn。
参考文献
［1］GB50007—2002建筑地基基础设计规范［S］.北京:中国建筑工业出版社,2002.
［2］JGJ79—2002建筑地基处理技术规范［S］.北京:中国建筑工业出版社,2002.
［3］龚晓南.复合地基理论及工程应用［M］.杭州:浙江大学出版社,2002.
［4］葛忻声,龚晓南,张先明.长短桩复合地基有限元分析及设计计算方法探讨［J］.建筑结构学报, 2003,24(4):91-96.
［5］邓超,龚晓南.长短桩复合地基在高层建筑中的应用［J］.建筑施工,2003, 25(1):18-20.