大跨度火车站房结构设计研究  

Large-span Station Structure Design and Research

作　　者：毛念华[1] 

机构地区：[1]中铁第一勘察设计院集团有限公司,西安710043

出　　处：《工程建设与设计》2011年第4期47-50,共4页Construction & Design for Engineering

摘　　要：随着火车站新建、扩建的进行,一系列形式多样、跨度规模大、体型体系复杂的结构越来越多,呼和浩特东客运站主站房结构各层结构体系不同,楼面结构为预应力梁与普通RC楼板结构,而屋盖结构为拱形钢梁和双层球网壳等结构体系的组合;结构体系和材料的不同使结构的阻尼比也不同;柱网尺寸大且各层柱网变化大、结构竖向刚度变化较大;给传统结构设计提出了挑战。通过分单元计算和整体计算相结合的方法进行结构计算,对于整体结构分别进行多维抗震分析,并进行了地震波输入时程分析作为补充对比,确定了下部混凝土结构的设计方案;对穹顶结构考虑整体约束作用下进行弹性稳定分析,以及大跨雨篷的设计分析。根据分析结果给出了针对结构特殊性的对策方案,以保证其安全可靠。Teeming with the railway station construction and expansion,a series of various size,span large and shape complex system structure more and more appear.Each layer structure of Hohhot passenger station housing is different,floor structure is prestressed girder and common RC floor,but the vaulted roof structure is steel and double net shell structure system;structure and material different which cause damping ratio different;the size of column meshes is big and change much of layers,the vertical stiffness changes greatly;because of ultra-long seamless and wind load sensitivity,which challenge traditional structure design.The paper through whole and unit calculation combining method for the structure analysis,multidimensional seismic analysis for the whole structure,and the seismic input analysis as a supplement,which determine the concrete structure design;considering the whole dome structures elastic stability under the restriction,design the large span awning.Based on the analysis,give the countermeasures for the structure particularity,in order to ensure the safe and reliable

关 键 词：大跨结构 多维地震 时程分析 

分 类 号：TU248.1[建筑科学—建筑设计及理论]