某低重心独塔斜拉桥抗震性能研究

英文篇名：Earthquake Resistance of Cable-stayed Bridge with One Tower of Low Gravity Center
中文刊名：石家庄铁道大学学报(自然科学版)
英文刊名：Journal of Shijiazhuang Tiedao University(Natural Science)
作者：张文学 ; 李程华 ; 杨金保
英文作者：Zhang Wenxue1 ; Li Chenghua2 ; Yang Jinbao2(1.The College of Architecture and Civil Engineering ; Beijing University of Technology ; Beijing 100022 ; China ; 2.Jiangxi Communication Design Institution ; Nanchang 330002 ; China)
中文关键词：低重心 ; 斜拉桥 ; 结构体系 ; 粘滞阻尼器 ; 摩擦支座
英文关键词：low gravity center ; cable-stayed bridge ; viscous damper ; friction bearing
出版日期：2010-08-30
机构：北京工业大学建筑工程学院;江西省交通设计院;
年：2010
期：02
出版单位：石家庄铁道大学学报(自然科学版)

摘要

某黄河独塔斜拉桥初步设计方案有半漂浮结构体系和固定铰支承结构体系。对其两种不同结构体系进行了抗震性能分析,通过对两种不同结构体系地震荷载作用下主塔控制截面内力响应对比可知,该桥为典型低重心独塔斜拉桥,该桥固定铰支承结构体系主塔控制截面的弯矩响应明显低于半漂浮结构体系主塔相应截面的弯矩响应。为进一步提高该桥的抗震性能,分别对不同塔梁之间纵向特殊连接装置对抗震性能的影响进行了优化对比分析,得到了一些有意义的结论。
Two conceptual designs are prepared for a one tower cable-stayed bridge over Huanghe river,the fixed hinge structural system and the half-floating system.Earthquake resistances of the two kinds of conceptual design structural systems are studied.Through contrasting the response of control cross-section of two different kinds of structural system under earthquake load,it is indicated that this bridge is a typical low gravity center cable-stayed bridge.The moment response of main tower control cross-section of the fixed hinge structural system is considerably lower than that of half-floating system under earthquake load.In order to improve earthquake resistance of the bridge,optimizing and contrasting of the earthquake resistance influence of special link device between tower and girder is conducted.Several significant conclusions are obtained.

引文

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