施工技术 2014年3月上 122 CONSTRUCTION TECHNOLOGY 第43卷第5期 D0I:10.7672/sjs2014050122 大庆西站跨层重载桁架在整体结构中 的静力弹塑性研究* 李慧 (中铁第一勘察设计院集团有限公司，陕西西安710043) [摘要]大庆西站跨层桁架结构跨度大，荷载大，形状奇异，受力复杂，在站房整体结构中发挥着重要作用.在站房 整体结构中，跨层桁架为结构薄弱部位.为保证站房整体结构在罕遇地震下的塑性变形能力及极限承载能力，对 站房结构进行了静力弹塑性分析研究.研究了站房结构在x γ向的变形能力，得到结构能力谱曲线.研究表明： 站房整体结构两侧的格构柱、跨层桁架的下弦杆为结构薄弱部位，塑性铰出现早.在多遇地震下，整体结构构件完 好；在罕遇地震下，构件不严重破坏，承载力达到极限值后基本维持稳定，满足《建筑抗震设计规范》GB50011一 2010水准性能要求. [关键词]钢结构；火车站；桁架；跨层桁架：静力弹塑性 [中图分类号]TU399;TU313 [文献标识码]A [文章编号]1002-8498(2014)05-0122-04 Pushover Study on Cross-layer and Heavy-load Truss Structure in Integral Structure for Daqing West Railway Station Li Hui China Railway First Survey and Design Institute Group Lid.Xi'an Shaanxi 710043 China) Abstract:Daqing West Railway Station's cross-layer truss with shape strange long span heavy-load which plays important role in the whole structure of station building.Cross-layer truss is weak region in the whole structure for the railway station.In order to ensure plastic deformation and ultimate bearing capacity of the whole structure this paper analyzes pushover of the railway station structure and studies structure deformation capacity at x direction y direction.Research shows that:lattice column and cross- layer truss lower boom are weak region in the whole structure.When it meets with frequent earthquakes structural members are intact;when it meets with seldom earthquakes damage of structural members is not serious.All studies satisfy current seismie design code. Key words:steel st...
大庆西站跨层重载桁架在整体结构中的静力弹塑性研究.pdf
