矩形钢管桁架屋面抽柱门式刚架设计方法研究  

RESEARCH ON DESIGN METHOD OF COLUMN-REMOVED RECTANGULAR TUBE-TRUSS ROOF PORTAL FRAME

作　　者：胡川[1] 陈水荣[1] 张同忠[1] 刘晓帆[2] 王杰[1] 李相杰[1] Hu Chuan Chen Shuirong Zhang Tongzhong Liu Xiaofan Wang Jie Li Xiangjie(Central Research Institute of Building and Construction Co. Ltd, Beijing 100088, China School of Civil Engineering,Tianjin University, Tianjin 300350, China)

机构地区：[1]中冶建筑研究总院有限公司,北京100088 [2]天津大学建筑工程学院,天津300350

出　　处：《钢结构》2016年第12期69-73,共5页Steel Construction

摘　　要：以某工厂化鳄鱼养殖舍建设项目为例,按照不同支撑排布方案,建立方管桁架屋面抽柱门式刚架模型。通过加载分析说明,在大量抽柱情况下,在抽柱位置布置纵向托架的同时,宜布置屋面横向、纵向水平支撑以提升结构的整体性能。同时通过分析采用弹性支座法模拟纵向托架对横向屋架支承作用的可行性,对比采用二维简化计算与三维空间模型计算的结果,说明弹性支座法和虚柱法都可以很好地模拟纵向托架对抽柱榀刚架的支承作用,且弹性支座法要优于虚柱法。Based on a crocodile breeding factory construction project,establishing five three-dimensionalportal frame models with different roof support,of which solid web beams were replaced by tube-truss and some steel columns were removed. By analyzing the five models,concluding that in the case of plenty of the columns were removed,the roof should be arranged in horizontal and vertical support to enhance the structural integrity while the longitudinal bracket were arranged in the column-removed positions. Analyzing the feasibility of simulating the support effect of bracket on roof truss by elastic support method. Comparing the results calculated by two-dimensional simplified calculation method and three-dimensional space model calculation method,drawing the conclusion that both elastic support method and virtual column method could well simulate the support effect of bracket to roof truss,and elastic support method was better than virtual column method.

关 键 词：方管桁架屋面 抽柱门式刚架 水平支撑 弹性支座法 虚柱法 

分 类 号：TU392.5[建筑科学—结构工程]