大跨度火车站房结构设计研究

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...

Large-span Station Structure Design and Research

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