带“人字”支撑的新型复合结构体系动力特征研究  

A study of dynamic characteristics for a new compound structural system with"∧"braces

作　　者：王新玲[1] 赵更奇[2] 杨广宁[2] 

机构地区：[1]东南大学土木工程学院,江苏南京210096 [2]郑州大学土木工程学院,河南郑州450002

出　　处：《世界地震工程》2004年第2期69-72,共4页World Earthquake Engineering

基　　金：河南省自然基金资助项目(项目编号:0411050900)

摘　　要：探讨了一种新型复合结构%D%D带"人字"支撑的梁柱体系的动力特征问题。在满足静力荷载作用下承载力要求的基础上,根据结构动力学原理,推导了该结构体系的动力特征方程,分析了复合结构体系的支撑截面和型式的变化对动力特征的影响,计算显示,增加支撑对提高结构的频率即抗侧刚度有明显作用,且随支撑截面尺寸增大,固有频率单调增加。支撑倾角在一定范围内变化时,对频率影响较大,而超过该范围时,其影响明显减小,由此说明"人字"支撑为较合理的支撑型式。结果表明,所研究的具有"人字"支撑的复合结构体系具有较高的抗侧能力。In this paper, a new compound structure with '∧'braces is satisfied with bearing capacity requirements under static loads. Based on dynamics theory of structure, the equations of dynamic characteristics of the structural system are obtained. The effects of different areas and types of brace on dynamics characteristics of the structural system are analyzed. By means of examples, the action of the braces increases the frequency and shear stiffness of the structure, and the frequency is increased monotonouly with adding of the brace section. The good type of braces can be determined by analyzing effect of different inclination of braces on frequency of the structure. The structure with '∧'braces possesses better antiseismic property.

关 键 词：复合结构 支撑体系 住宅 动力特征 

分 类 号：TU435[建筑科学—岩土工程]