2011年3月下 施工技术 第40卷第337期 CONSTRUCTION TECHNOLOCY 103 某轻轨车站屋面网架破坏原因分析 常好诵，郭晔，杨建平 (中冶建筑研究总院有限公司，北京100088) [摘要]通过现场检查、计算分析、破坏试验对东北地区某轻轨车站屋面网架的破坏原因进行了鉴定分析.通过现 场检查对网架构件尺寸、节点连接等结构构造进行鉴定分析：通过对设计、日常、破坏3种荷载作用工况的结构计 算对网架杆件和节点承载力进行校核；通过破坏试验对结构计算分析进行结果验证.分析结果表明：网架存在设 计和施工方面的缺陷，在设计荷载作用下结构可靠度不足，虽然在日常荷载作用下结构尚可正常工作，但过大的冰 雪荷载作用会导致屋面网架的破坏. [关键词]轻轨车站：屋面网架：破坏原因 [中图分类号]TU746.1 [文献标识码]A[文章编号]1002-8498(2011)06-0103-04 Damage Causes Analysis of Grid Frame Roof of a Light Rail Station Chang Haosong Guo Ye Yang Jianping Central Research Institute of Building and Construction of MCC Bejing 100088 China) Abstract:Damage causes of grid frame roof of a light rail station is synthetically analyzed by site inspection structural calculation and experiment.Dimension and joint of member bars are inspected by site inspection.Bearing capacity of member bars and joints are checked by structural calculation respectively under design mon and damage load conditions.Structural calculation result is testified by destructive experiment.Damage mechanism analysis indicates that as both designed and constructed defects exist in grid frame roof insufficient reliability under designed load is the substantial cause. However overloaded caused by snow load is the directly results in damage of grid frame roof. Key words:light rail station;grid frame roof;damage cause 1工程概况 屋盖出现局部严重下挠（见图1b).本文通过现场 东北地区某轻轨车站建成于2006年.车站屋检查、计算分析和试验3部分工作对屋面网架的破 盖采用单向受力网架，由14福截面为倒三角形的空坏原因进行鉴定分析. 间桁架组成，每福空间桁架又由两福简支平面桁架2结构现场检查 组成，平面桁架采用单斜式腹杆体系.平面桁架跨2...
某轻轨车站屋面网架破坏因为分析.pdf
