【摘要】 在高速铁路和轨道交通工程中出现的桥梁和车站相结合的新型组合结构形式,有必要对其组合方式、结构形式、抗震性能及减震效果进行研究。基于此对一种新型高架桥与建筑复合减震结构进行研究,给出复合结构的组合方式及结构形式,基于动能和基底剪力相等把高架桥等效为单质点子结构模型,把建筑结构等效为另外一个质点,建立2质点简化计算模型。对影响结构动力响应的减震层刚度和阻尼,高架桥与建筑的质量比进行参数影响分析,并且提出了质量比在0.5~4.5之间的最优频率比公式和阻尼比的取值原则。进一步完成了高架桥与建筑复合减震结构地震反应试验,试验结果表明高架桥与建筑复合减震体系不仅对建筑结构有较理想的减震效果,对高架桥也有明显的减震效果。更多还原

【Abstract】 A new combination structure of station and bridge has been appeared in the high-speed railway and track projects.It is necessary to research its composition form,structure properties and seismic effects.In the paper,the bridge and building complex structural system is proposed as a new seismic structural system,and The configuration,simplified model and the formulation of the 2-degree of freedom equations of motion for the structure are provided.The optimal parameters are obtained from parameter optimization analysis has been done.A steel frame complex structural model with energy dissipation devices is designed in our research for a large scale shaking table dynamic test.The research results show that the complex structure has good reduction vibration effect.更多还原