某大跨异型现浇预应力混凝土空心板结构分析  

ANALYSIS OF AN IRREGULAR PLAN LONG-SPAN CAST-IN-SITU PRESTRESSED CONCRETE HOLLOW FLOOR STRUCTURE

作　　者：刘航[1] 经杰[2] 杨学中[1] 李俊平[3] 

机构地区：[1]北京市建筑工程研究院,北京100039 [2]清华大学建筑设计研究院,北京100084 [3]北京建筑工程学院,北京100044

出　　处：《建筑技术》2011年第2期115-120,共6页Architecture Technology

摘　　要：为准确计算空心板结构在荷载作用下的内力和变形,对比分析了采用拟板法、拟梁法、密肋梁法等简化计算模型与有限元实体分析模型的计算结果。结果表明,混凝土空心楼盖采用填充箱体对称布置时有着很好的各向同性性能,采用拟梁法和密肋梁法计算与框架柱相连的暗梁或拟梁时,其计算结果往往偏大很多,不宜直接采用。在此基础上,并进一步探讨了预应力筋的布置原则与方法。In order to accurately calculate the internal force and deformation of the hollow floor structure under loads, the calculation results of finite entity element analysis models and the simplified calculation models, such as the analogue slab method, analogue cross beam method and cross rib beam method, etc., are compared and analyzed. The result shows that favorable isotropic property is available when concrete hollow floor structures are arranged symmetrically by using box filler. When the concealed beam or analogue beam connected to the frame column is calculated by using analogue beam method and cross rib beam method, the calculation result is usually much greater and should not be used directly. Based on this result, the principle and method for arrangement of prestressed steel bar is discussed in depth.

关 键 词：现浇混凝土空心板 有限元分析 拟板法 拟梁法 预应力 大跨 异型 

分 类 号：TU378[建筑科学—结构工程]