填充墙框架结构自振周期折减系数研究

STUDY ON THE INFILLED FRAME PERIODIC REDUCTION COEFFICIENT

目前规范针对混凝土空心砌块、加气混凝土砌块等一些新型砌体填充墙材料周期折减系数的取值问题尚未明确规定,但是自振周期折减系数对地震作用下RC框架结构的动力响应有着重要的影响。针对新型砌体填充墙RC框架结构的自振周期折减系数,运用Sap2000有限元软件进行分析研究并探讨了由于框架填充墙材料的不同、楼层层数的不同导致自振周期和周期折减系数的取值不同问题,给自振周期折减系数的取值提出了合理建议,为今后在结构设计中针对RC框架结构周期折减系数的取值大小问题提供有力的参考依据。

The specification for concrete hollow blocks,aerated concrete block masonry infill walls and some new material cycle reduction coefficient not yet clearly defined,but the natural vibration period reduction coeffictient have a major impacten on seismic RC frame structures under dynamic response. This paper,mainly for new masonry infilled RC frame structure vibration period reduction coefficient,by use of finite element software Sap2000,analyzed and discussed the issnnes that different infilled frame material and the number of floors result in different vibration period and cycle reduction coefficient values and proposed some beneficial suggestions for natural vibration cycle reduction coefficient,it provide a strong reference for the future in the structural design.