双向钢-混凝土组合楼盖简化分析模型及空间作用分析  

Spatial Action Analysis of Two-way Steel-concrete Composite Floor with Simplified Analysis Model

作　　者：卜凡民[1,2] 聂建国[2] 樊健生[2] 

机构地区：[1]中交第四公路工程局有限公司,北京100025 [2]清华大学土木工程安全与耐久教育部重点实验室,北京100084

出　　处：《建筑科学》2014年第9期1-6,共6页Building Science

基　　金：国家自然科学基金重点资助项目(50438020)

摘　　要：为研究双向钢-混凝土组合楼盖受力性能,便于工程推广应用,本文采用通用有限元软件ABAQUS,建立了适于组合楼盖非线性分析的简化有限元模型。在此基础上,分析了双向钢-混凝土组合楼盖的空间作用,提出了适用于工程计算的简化设计方法。分析表明:1简化有限元模型降低了建模和数值计算的难度,且能保证计算精度并使参数分析易于进行;2双向组合楼盖具有更高的刚度和承载力,但随着长宽比增大,空间作用降低,优势减小,建议根据长宽比以及建筑要求,合理选择单、双向组合楼盖。The mechanical behaviors of two-way steel-concrete composite floors are analyzed for popularization and application. A simplified model suit for nonlinear analysis of composite floors is created based on the general finite element software ABAQUS. Spatial action of two-way steel-concrete composite floors is analyzed and a simplified method for design is created. It is proved that difficulties of modeling and numerical calculation are decreased using the simplified FE model, while the reasonable accuracy is maintained and parameter analysis is more convenient. The result shows that two-way steel-concrete composite floor has higher stiffness and bearing capacity than one-way steel-concrete composite floor, but the spatial action and advantages decrease with length-width ratio increasing. The length-width ratio and architectural requests should be taken into account for the choice of floor type.

关 键 词：双向钢-混凝土组合楼盖 简化分析模型 空间作用 

分 类 号：TU398.9[建筑科学—结构工程]