(1 青岛理工大学土木工程学院， 青岛 266033；2 山东省高等学校蓝色经济区工程建设与安全协同创新中心， 青岛 266033)

［摘要］鉴于软岩地基上CFG桩复合地基工作性状的独特性，以青岛某3栋高层住宅楼（1#，2#，3#楼）为依托，对地基处理方案进行优化，通过强风化泥岩地基上CFG桩复合地基和天然地基的静载荷试验，研究了CFG桩复合地基和天然地基的承载性能和变形特性，验证了该场区经优化后地基处理方案的可行性与合理性。研究表明，本工程1#,2#楼采用天然地基完全能够满足设计要求，在很大程度节约了工程造价。

［关键词］CFG桩复合地基； 泥岩地基； 变形特性； 地基处理； 方案优化

中图分类号：TU470文献标识码：A文章编号：1002-848X(2019)12-0120-05

Application and optimization of CFG pile composite foundation on strong weathered mudstone foundation

Mu Yangyang1, Bai Xiaoyu1, 2, Zhang Mingyi1,2

(1 School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China; 2 Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao 266033, China)

Abstract:In view of the uniqueness of the working traits of the CFG pile composite foundation on the soft rock foundation, based on three high-rise residential buildings (1#, 2# and 3# buildings) in Qingdao, the foundation treatment scheme was optimized. Through the static load test of CFG pile composite foundation and natural foundation on strongly weathered mudstone foundation, the bearing capacity and deformation characteristics of CFG pile composite foundation and natural foundation were studied, and the feasibility and rationality of the optimized foundation treatment scheme in this field were verified. The research shows that the natural foundation used in 1# and 2# buildings of this project can fully meet the design requirements and greatly save the project cost.

Keywords:CFG pile composite foundation; mudstone foundation; deformation characteristic; foundation treatment; scheme optimization

*国家自然科学基金(51708316, 51778312, 51809146)，山东省重点研发计划(2017GSF16107, 2018GSF117008)，山东省自然科学基金(ZR2016EEQ08, ZR2017PEE006)，山东省高等学校科技计划(J16LG02)，中国博士后科学基金资助项目(2018M632641)。

通讯作者：白晓宇，博士，副教授，Email：baixiaoyu538@163.com。