【摘要】 采用桥建合一形式的铁路客站框架承轨结构,其承轨梁一般有普通混凝土梁和预应力混凝土梁两种。分析比较铁路桥梁和建筑结构的异同点,对框架承轨结构的两种方案进行静力弹塑性分析,比较两种方案的抗震性能,结果表明,两种方案都具有很好的抗震性能,均能满足抗震设计规范的要求。比较两种方案的裂缝、长期徐变挠度、动挠度等计算结果。最后指出,预应力混凝土梁具有更好的抗裂和抗疲劳性能。更多还原

【Abstract】 The rail-bearing beams of framework rail-bearing structure in railway station,which adopts the form of bridge-station combined structure,have two kinds of beams,including the ordinary concrete and prestressed concrete beam.The similarities and differences between railway bridge and building structure were compared,and two schemes of framework bearing rail structure were analyzed by Pushover.The seismic performance of two schemes was compared.The results show that the two schemes have good seismic performance,and can meet the requirements of the seismic design code.Then the crack,long-term creep deflection and dynamic deflection of two schemes were compared too.Finally,it is pointed out that the prestressed concrete beams have the better resistance to cracking and fatigue performance.更多还原