地基整体平面沉降下框架结构分析  

Study on the frame structure under integral plane settlement

作　　者：叶艳霞[1] 臧园[2] 

机构地区：[1]长安大学建筑工程学院,陕西西安710061 [2]中冶天工上海十三冶建设有限公司,上海201600

出　　处：《四川建筑科学研究》2012年第4期123-126,共4页Sichuan Building Science

基　　金：陕西省自然科学基金(2009JM7013);中央高校基本科研业务费专项资金(CHD2010JC082);长安大学基础研究支计划专向基金资助项目

摘　　要：为了研究地基发生平面整体不均匀沉降时空间框架结构的内力和变形特点,根据实际工程情况,建立了一个4层典型空间框架有限元分析模型。分别采用固定支座模型和弹性支座模型,给出了框架结构的内力和变形情况,并对两种计算模型的结果进行了对比分析。认为结构变形为整体倾斜变形;结构受到的轴力、剪力和弯矩主要集中在底部楼层;框架梁所受内力以弯矩为主;框架柱所受内力以轴力和弯矩为主。建议采用弹性支座模型进行相关计算分析。In this paper,the effect of the non-uniformity settlement of ground foundation on the upper space frame structure is studied. This paper takes a four-story space frame structure with two spans as an example. The different pedestal for a body is installed at the joint of column footing, which respectively form the fixed support model and the elastic supported model. Integral plane settlement is applied in every model. The deformation of frame structure under integral plane settlement is slant of the whole structure; Beams are principally suffered with the bending moment and the columns principally suffered with axial force and moment;The biggest force appears in the first story. It indicates that the elastic support model has certain economy.

关 键 词：框架结构 平面整体沉降 固定支座模型 弹性支座模型 

分 类 号：TU434[建筑科学—岩土工程]