(1.浙江大学土木工程学院，杭州，310027；2.温州市民用建筑规划设计院，325000)
［提要］  温州地区某工程沉管灌注桩施工质量出现严重问题。经过多种地基加固方案对比后，采用刚柔性桩复合地基进行加固。采取了有效的技术措施，成功解决了因刚性桩、柔性桩和土变形模量不同产生的桩土变形不协调问题。现场检测和分析表明，该工程采用刚柔性桩复合地基是可行的，地基承载力和沉降均满足要求。
［关键词］  刚性桩  柔性桩  复合地基  加固  桩土共同作用  承载力  沉降
Study on Rigidflexible Piles Composite Foundation with Worse Quality/Zhu Kui1, Xu Riqing1,Wu Donghu2,Wu Long2(1 Department of Civil Engineering，Zhejiang University，Hangzhou 310027，China; 2 Wenzhou Civil Building Plan Design Institute，Wenzhou 325000，China)
Abstract:The quality of vibrodriven castinplace pile got worse in the course of construction in Wenzhou. Comparing with different plans of foundation reinforcement, the rigidflexible piles composite foundation is applied. Effective measures are taken to solve the problem of pilesoil displacement incoordination due to different elastic modulus of rigid pile, flexible pile and soil. Monitoring data shows that the load capacity and settlement have met the demands.
Keywords:rigidflexible piles composite foundation; reinforcement; pilesoil interaction; load capacity; settlement