（中国建筑设计研究院，北京 100044）

[摘要]   依据《建筑桩基技术规范》（JGJ94—2008）提出的以减小差异沉降和承台内力为目标的变刚度调平设计，针对传统均布CFG桩基处理进行平面布置优化并应用于工程实例，从而合理考虑桩土的共同承载能力，减少沉降差异，降低筏板内力及配筋，望能为类似工程地基设计提供参考。

[关键词]   地基处理；复合地基；变刚度调平设计

中图分类号：     文献标识码：A       文章编号：

Optimized design of cement-fly ash-gravel pile composite foundation stiffness to reduce differential settlement

Jing Pengchao

(China Architecture Design and Research Institute, Beijing 100044，China)

Abstract : Based on Technical code for building pile foundations（JGJ94—2008） to reduce differential settlement and internal forces for variable rigidity design, CFG piles with traditional uniformly distributed layout to were optimized and applied toengineering examples, so jointly bearing capacity of piles and soil was reasonably considered, overcome and reduce the differential settlement, reduce internal forces and raft's reinforcement, which can provide a reference for similar project’s composite foundation design.

      Keywords : ground treatment; composite foundation; variable rigidity design

参 考 文 献

[1]     GB50007—2011 建筑地基基础设计规范[S]．北京：中国建筑工业出版社，2011．

[2]     JGJ94—2008 建筑桩基技术规范 [S]．北京：中国建筑工业出版社，2008．

[3]     JGJ79—2012 建筑地基处理技术规范 [S]．北京：中国建筑工业出版社，2012．

[4]     中国建筑科学研究院PKPM CAD工程部．独基、条基、钢筋混凝土地基梁桩基础和筏板基础设计软件JCCAD[M]．北京,2011.