框筒结构裙梁最大跨高比研究  

Research on the Maximum Ratio of Beam's Span to Height in Frame-Tube Structures

作　　者：孟焕陵[1] 沈蒲生[1] 

机构地区：[1]湖南大学土木工程学院,长沙410082

出　　处：《重庆建筑大学学报》2006年第2期62-65,共4页Journal of Chongqing Jianzhu University

基　　金：高等学校博士点基金资助项目(20020532010)

摘　　要：当框筒结构裙梁跨高比增大到一定程度以后,剪力滞效应就可以忽略,结构的受力性能与框架相近。通过令框筒和框架两种结构体系的水平侧移曲线相等的方法来寻求框筒结构裙梁的最大跨高比,当跨高比超过该值时,按框架结构计算较为合理;否则,可认为结构属于框筒结构。通过对各参数的分析,得出影响临界跨高比的各种影响因素,并给出了两种结构体系判别的步骤。该方法简单、实用,可供初步设计使用。The shear lag effect in frame - tube structures can be neglected when the ratio of beam＇s span to height increa- ses to some degree, and its behaviors comes close to the behaviors of frame structures. The maximum ratio of beam＇s span to height is obtained by the equal side - sway of two structures. The structure should belong to frame structures when its ratio of beam＇s span to height exceeds the critical value, Otherwise, it should belong to frame - tube structures. According to the analysis of the various parameters, some influence factors can be obtained, and the process to distinguish the two structural systems is given. It is shown that this method is accurate and convenient enough for use during the preliminary stage of design.

关 键 词：框筒结构 剪力滞 框架结构 裙梁跨高比 

分 类 号：TU973.16[建筑科学—结构工程] TU318.1