【摘要】 以云南山区高速公路常用的连续梁桥下部双柱式桥墩、T形桥墩桥梁为研究对象,建立了空间动力弹塑性时程分析模型,分别讨论了墩底边界模拟方法、单联与多联模型对地震响应结果的影响程度与规律。结果表明:不同墩底边界模拟方法对桥墩的地震作用影响较大;单联模型可用于双柱式桥墩纵向地震反应分析以及T形墩纵、横向地震反应分析;双柱式桥墩横向地震分析宜采用多联模型。更多还原

【Abstract】 Taking the double-column bridge piers and T-shape bridge piers of continuous girder bridge in Yunnan mountain highway as the research object,this paper established a space dynamic elastic-plastic time history analysis model,discussed the influence degree and rule of the pier bottom boundary simulation method,single-joint and multi-joint model parameters on the seismic response results through a large number of calculation and analysis.The results indicated that different pier bottom boundary simulation method has a greater effect on the earthquake,single-joint model can be used for vertical seismic response analysis of double-column type pier and vertical or horizontal seismic response analysis of T-shape pier,horizontal seismic analysis of double-column type pier should primarily adopt the USES split model.更多还原