石膏墙体钢网格式框架结构基于改进能力谱法的抗震性能研究  

Study on seismic behavior of steel grid frame with gypsum-wall based on improved capacity spectrum method

作　　者：孙涛[1] 马克俭[1,2] 陈志华[1] 王其明[1] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]贵州大学空间结构研究中心,贵州贵阳550003

出　　处：《空间结构》2011年第4期3-9,共7页Spatial Structures

摘　　要：石膏墙体钢网格式框架结构是由密排小立柱、层间横梁、楼层圈梁和网格梁形成的一种新型空间钢结构体系,采用工业石膏废料作为墙体填充材料.针对一工程实例,建立该体系的空间有限元模型,进行抗震设计;采用改进能力谱法确定结构基本和罕遇烈度下的目标位移,研究结构在两种烈度下的层间位移角和屈服模式,分析不同侧向力分布对结构抗震性能的影响.分析结果表明钢网格式框架的自振周期、变形均满足规范要求,结构罕遇烈度下的Pushover分析结果说明结构抗震性能优异.The steel grid frame structure with gypsum-walls is a new type of innovative system, of which the grid is formed by small pillars with small space, beams between relative stories and ring beams, and the walls are made of industrial gypsum waste. An actual structure using this system was studied. Seismic design was completed based on space FEM analysis. The improved capacity spectrum method was applied to obtain the deformation of the structure under the seismic fortification intensity and seldom intensity for 8 degree region. The relative rotation angles, buckling modes behavior and the influence on seismic behavior under different lateral seismic forces were studied. The result indicated that the natural vibration period and deformation can meet the code requirements. The seismic behavior of this new structure is excellent proved by the pushover analysis under the seismic seldom intensity.

关 键 词：钢网格式框架 抗震设计 改进能力谱法 侧向力分布 层间位移角 

分 类 号：TU311.3[建筑科学—结构工程]