（大连万达商业地产股份有限公司， 北京 100022）

［摘要］针对亳州地区百米高层采用管桩桩基方案无法穿越细砂层的问题，经深入分析岩土地质力学参数和土层分布，并结合大量现场载荷板试验和理论计算验证，确定采用高强预应力管桩复合地基处理方案，该方案通过提高基底浅层黏土地基承载力可使足够厚度的细砂层作为桩端持力层，解决了桩基穿越细砂层的问题，为地方勘察设计提供了经验，可作为成功案例参考。项目于2015年底结构封顶，主体沉降控制在2～3cm左右，并趋于稳定。

［关键词］土体力学参数分析； 单桩静载试验； 短桩复合地基处理； 载荷板试验

中图分类号：TU753文献标识码：A文章编号：1002-848X(2017)13-0094-04

Case study of foundation design optimization of Bozhou Wanda Plaza

Fang Yingjian, Wen Shanping

(Dalian Wanda Commercial Real Estate Co.,Ltd., Beijing 100022, China)

Abstract:The pipe pile foundation scheme of a one-hundred-meter high building in Bozhou region cannot pass through the fine sand layer. Through in-depth analysis of rock soil mechanics parameters and soil layer distribution, combined with a large number of field loading plate tests and theoretical calculation verifications, composite foundation treatment scheme with high-strength prestressed pipe pile was determined. This scheme could make the fine sand layer with sufficient thickness as the pile end bearing capacity layer by improving shallow clay foundation bearing capacity, which could solve the problem of pile foundation passing through fine sand layer and could provide experience and successful case for the local survey and design. The structure was completed at the end of 2015, the settlement of the main body was controlled at about 2～3cm, and tended to be stable.

Keywords:soil mechanics parameter analysis; static load test of single pile; short pile composite foundation treatment; loading plate test

作者简介：房英健，本科，高级工程师，一级注册结构工程师，Email:1035432482@qq.com。