梁伟盛　（广州市建设科学技术委员会办公室　510030）

[提要]  凯城东兴综合大厦结构共36层，上部结构极不规则，勘探钻孔60m深度范围内无基岩揭示。工程设
计中根据工程地质、周边环境及上部结构的特点，选取浅层岩土全风化岩层作为高层建筑结构筏板基础的地基持力层，部分考虑地下室结构的刚度影响，恰当地解决了基础不均匀沉降的问题，并运用有限元对基础结构进行了详细分析。着重介绍了地基承载力取值、沉降计算、沉降变形差的处理措施及筏板结构设计。
[关键词]  筏板基础  地基变形  变形模量  有限元

Kai-cheng Dong-xing Mansion has totally 36 structural storeys. The upper structure is especially irregular and a 60m deep exploring bore did not find rock subgrade. According to the engineering geology, the circumambient conditions and the upper structural characteristics, the completely weathering rock layer locating on top is selected as the tall building structural bearing subgrade in design. The problem of the subsoil deformation difference is solved by partly accounting for the basement structural stiffness, and by finite element analyses.The subgrade bearing capacity, the caculating of subsoil deformation,the measures to control the subsoil deformation difference and the raft slab structure design are introduced.
Keywords: raft foundation; subsoil deformation; deformation module; finite element

       参  考  文  献
  1．建筑地基基础设计规范( GBJ7-89).
  2．建筑地基基础设计规范（广东省标准）( DBJ15-3-91)．
  3．高层建筑箱形与筏板基础技术规范（JGJ6-99）
  4．宰金珉，宰金璋．高层建筑基础分析与设计．北京：中国建筑工业出版社，1993．
  5．混凝土结构设计规范（GBJ10-89）．
  6．梁伟盛．多高层筏板基础设计探讨．广东土木与建筑，2001，31(6)．