超长悬挑支撑架的应用研究  

Study on Application of Long Cantilever Support Frame

作　　者：赵挺生[1] 唐菁菁[1] 周萌[1] 刘凤云[1] 杨建华[1] 汪杰[1] 胡长明[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《施工技术》2013年第5期25-27,共3页Construction Technology

基　　金：国家自然科学基金项目(50978219);陕西省教育厅专项科研计划项目(12JK0898)

摘　　要：结合某工程,对大跨度型钢悬挑梁的计算进行了分析,特别是钢丝绳对悬挑梁作用力的简化。大跨度型钢悬挑支撑架主要有3种:斜拉式、斜撑式和撑拉结合式。所介绍工程是混凝土现浇悬挑屋盖,荷载较大,工期紧,考虑到工期和经济性,该工程采用的是斜拉式型钢悬挑支撑架,3道钢丝绳斜拉,2道受力,1道保险。重点解决了钢丝绳的作用力简化为弹性支座的问题,以及弹性支座刚度的计算。Setting with a project,the paper focuses on calculation of the large span steel cantilever beam,especially the simply of cable forces.Large span steel cantilever beam is mainly in three forms： cable-stayed,bracing and brace pull combination.The background engineering of this correspondence is a cast-in-place concrete cantilevered roof.Considering the heavy load,tight construction period,duration and economic problems,the cable-stayed form is adopted.This form is composed of three wire ropes,two of which is used for load-carrying and the left one is used for insurance.The paper pay attention to the simply of cable forces as a elastic support and give the calculation of elastic stiffness.

关 键 词：模板 脚手架 悬挑梁 钢丝绳 弹性支座 

分 类 号：TU731.2[建筑科学—建筑技术科学]