地震作用下楼盖开洞对轻钢龙骨房屋的动力分析  

Dynamic Analysis of Light-Gauge Steel Houses Under Earthquake

作　　者：崔凯 柏洁[1] 谢嘉骥 

机构地区：[1]贵州大学土木工程学院,贵州贵阳550025

出　　处：《贵州大学学报（自然科学版）》2017年第5期110-114,119,共6页Journal of Guizhou University:Natural Sciences

基　　金：基金项目:贵州省教育厅<轻型木结构房屋剪力墙受理性能研究>(黔科合J子[2010]2246号)

摘　　要：楼盖作为轻钢龙骨房屋的主要构件,承担平面外的荷载和发挥水平传力作用,通过对比轻钢龙骨房屋楼盖在刚弹性假定下,分析楼盖不同开洞率的模态、质量参与系数、基底剪力、结构最大位移、楼盖应力。得出轻钢龙骨房屋在地震作用下刚弹性楼盖两种假定对不同开洞率楼盖的模态、结构的最大位移计算结果相差不大,可以忽略。对于基底剪力在开洞率小于20%时,楼盖刚性假定比弹性假定要大,当开洞率大于40%时,楼盖的刚性假定偏小,对结构设计不利,则楼盖开洞率较大时应采用弹性楼盖假定更为安全合理。弹性楼盖应力随开洞率的增大下在洞口转角应力有减小的趋势。The floor as the main component of the light-Gauge Steel house,not only bears the load outside the plane, but also plays the role of horizontal force. By comparing the light-Gauge Steel house floor under rigid and elastic assumptions, the analysis of the floor of the different opening rate of the modal, base wall shear, structural maximum displacement, slab stress was conducted. It is concluded that the calculation results of the maximum displacement of the modal and the structure of the slabs are different from those of the rigid -elastic slabs under the action of the earthquake. For the base shear force in the rate of hole of less than 20%, the rigid floor assump-tion is greater than the elastic assumption, when the rate of hole is greater than 40%, the rigid floor assumption is smaller than elastic assumption, adverse structural design, the opening floor Elastic floor should be assumed to be more secure and reasonable. The stress of the elastic floor decreases with the increase of the opening ratio.

关 键 词：轻钢龙骨 刚弹性楼盖 开洞率 动力响应 

分 类 号：TU311.3[建筑科学—结构工程]