（温州市建筑设计研究院，温州 325003）

［摘要］通过工程实例和对同一承台下长短桩各断面的轴力量测，研究我国沿海城市具有两个或多个较硬的持力层的软土地区，当上持力层变形模量大于下持力层时，长短桩桩基与长桩桩基的变形性状机理，得出在该类地基中，长短桩桩基的沉降小于长桩桩基，且工程造价更低。该研究对我国沿海地区在该类地基工程中降低基础造价、减少建筑物沉降有一定的借鉴作用。

［关键词］长短桩；长桩；轴力量测；沉降量；软土地基

Research on deformation character of long-short pile foundation and long pile foundation in Wenzhou

Jin Guoping, Li Zhaohui, Ye Qiang, Zou Zongxuan（Wenzhou Architectural Design and Research Institute, Wenzhou 325003, China）

Abstract:Based on practical cases and axial stress test of the long-short pile foundation of the same pile caps in the soft clay area, the deformation character of the long-short pile foundation and whole-long pile foundation under the geological condition which the strength of upperstratum is higher than the understratum when two or more layers are appeared in the soft clay area is analysed. Analysis also shows that both settlement and cost of the long-short pile foundation are less than those of the long pile foundation in this kind of ground. The conclusion can be used to decrease the settlement and reduce the cost of the buildings in this kind of ground at the coastal area of China.

Keywords:long-short pile foundation; long pile foundation; measurements of pile axial load; settlement; soft clay ground

作者简介：金国平，教授级高工，Email:jgp@wzadri.com。

参考文献

［1］王伟，等.长短桩桩基础与其它类型基础的比较分析［J］. 建筑结构学报, 2006, 27(1).