基于地基承载力的砌体结构房屋基础外形分析  

Shape analysis of building foundation for brick masonry structure based on capacity of groundwork

作　　者：刘正保[1] 熊辉霞[1] 于秀斌[2] 胡晓楠[3] 

机构地区：[1]南阳理工学院土木工程系,河南南阳473004 [2]建设部中国建筑业协会北京建扶工程建设监理公司,北京100044 [3]南阳理工学院基建处,河南南阳473004

出　　处：《华中科技大学学报（自然科学版）》2005年第8期84-86,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：河南省教育厅科学研究基金资助项目(1999560004)

摘　　要：针对砌体结构房屋基础底面压应力的分布特点,分别采用独立基础并设置墙下地梁、条形基础矩形区域修正以及多边形区域的对称和不对称修正等四种基础外形方案,根据基础节点类型按地基承载力要求确定基础底面的合理修正范围,导出了修正系数的计算公式.所得结果表明,用独立基础代替条形基础,可显著降低工程造价;以条形基础为主进行局部修正时,“+”型节点处修正最大,“^”型、“”型节点处应适当修正,“L”型节点处一般不必修正.该修正方法简便、实用,所得结果简单可靠,可直接用于基础设计.According to stress distribution of compressive load on walls, and to types of foundation linkage area based on capacity of groundwork, such as single-foundation and groundwork beam under wall, strip foundation with rectangle, symmetry and non-symmetry linear revision for linkage area of foundation base,this four shapes of the revised calculating formula were derived for building foundation with brick masonry structure These four types of the revised coefficient of calculating formula derived. The computation showed that the engineering costs would be remarkably reduced when single-foundation was replaced by the strip one, and the revised coefficient is biggest for ＂ ＋ ＂ shaped linkage area, bigger for ＂⊥＂ or ＂ ┠ ＂ linkage areas, no revision for ＂L＂ linkage area when strip foundation is partly revised. The revised methods are simple and believable computed results can be directly applied in foundation design.

关 键 词：砌体结构 房屋基础 基础设计 

分 类 号：TU318[建筑科学—结构工程]