【摘要】 介绍了模拟地震反应地面运动的大质量法,并用大质量法和拱脚固定法在有限元软件AN SY S里对一大跨度钢管混凝土(CFST)拱桥(346 m)地震反应进行了分析.通过分析得出两种方法的结果是一致的结论,说明大质量法是大跨度钢管混凝土拱桥地震反应分析的有效方法,也是大跨度结构考虑行波效应和多点激励的地震反应分析的有效方法.更多还原

【Abstract】 In this paper,Large-mass method of simulating the motion of ground is introduced.This method and the arch root fastness method are applied to analyze the seismic response of a long-span CFST arch bridge(346m) in ANSYS.The analysis suggests that the results of two methods are uniform.So large-mass method is an effective method for seismic response analysis of long-span CFST arch bridge and long-span structures under the action of traveling waves and multi-supported excitations.更多还原