[1]郑成成,陈永祁,郑久建,等.高烈度区大跨度桥梁粘滞阻尼器减震研究[J].世界地震工程,2021,(02):115-122.
 ZHENG Chengcheng,CHEN Yongqi,ZHENG Jiujian,et al.Research on vibration reduction of long-span bridge with viscous damper in high intensity region[J].,2021,(02):115-122.
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高烈度区大跨度桥梁粘滞阻尼器减震研究
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《世界地震工程》[ISSN:/CN:]

卷:
期数:
2021年02期
页码:
115-122
栏目:
出版日期:
2021-04-30

文章信息/Info

Title:
Research on vibration reduction of long-span bridge with viscous damper in high intensity region
作者:
郑成成1 陈永祁2 郑久建1 马良喆2 吴福春2 陈伟强1
1. 燕山大学 建筑工程与力学学院, 秦皇岛 066004;
2. 北京奇太振控科技发展有限公司, 北京 100037
Author(s):
ZHENG Chengcheng1 CHEN Yongqi2 ZHENG Jiujian1 MA Liangzhe2 WU Fuchun2 CHEN Weiqiang1
1. Yanshan University, College of Construction Engineering and Mechanics, Qinhuangdao 066004, China;
2. Beijing Qitai Shock Control and Scientific Development Co., Ltd., Beijing 100037, China
关键词:
高烈度地震高速铁路连续梁粘滞阻尼器参数敏感性分析
Keywords:
high-intensity earthquakehigh-speed railway continuous beamviscous damperparameter sensitivity analysis
分类号:
U442.55U24
摘要:
高烈度地震对铁路桥梁安全造成巨大隐患,且次生灾害将引起较大经济损失。该大跨连续梁桥所处地震带正进入活跃期,未来有发生较大规模强烈地震的可能,但桥梁自身不具备高烈度抗震能力,需利用粘滞阻尼器对其进行减震处理。采用斜向设置阻尼器并配合双曲面球型支座,来控制可能发生的纵向和横向地震。通过数值模拟进行阻尼器参数敏感性分析以及减震效果讨论,进而确定其最优设置方案。选取相关参数作为评价指标,对比加设阻尼器前后易损部位的地震响应,确定其在高烈度地震荷载激励下的减震效果。研究结果表明:在液体粘滞阻尼器的作用下,使得各墩协同受力,大大增加了结构的整体性,同时能很好弥补减隔震支座不能很好的控制上部结构位移的缺点,同时能降低罕遇地震力对桥墩的冲击损伤。因此,在高烈度区大跨度桥梁中更有必要设置阻尼器来抗震。
Abstract:
High-intensity earthquakes cause huge dangers to the safety of railway bridges, meantime secondary disasters will cause greater economic losses. The seismic region, where the long-span continuous girder bridge is located, enters an active period, and a strong earthquake may occur in the future, but the bridge itself does not have enough seismic resistance, and it needs to be strengthened by viscous dampers. The damper is used in combination with the hyperboloid spherical bearing to control the possible longitudinal and transverse earthquake actions. Through the numerical simulation, the sensitivity analysis of the damper parameters and the damping effect are discussed, then the optimal setting scheme is determined. Relevant parameters were selected as evaluation indexes, and the seismic response of vulnerable parts before and after the setting of dampers was compared to determine the reduction effect under high-intensity seismic load excitation. The results show that: with liquid viscous dampers, the piers cooperate to each other, greatly increases the integrity of the structure, and it can make up for the shortcomings of the seismic isolation bearing that they cannot control the displacement of the superstructure. At the same time, it can reduce the impact damage of bridge piers caused by rare earthquake actions. Therefore, it is more necessary to install dampers to resist earthquakes in long-span bridges in high-intensity seismic regions.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-05-06;改回日期:2020-06-19。
作者简介:郑成成(1991-),男,硕士生,主要从事大跨度桥梁抗震研究.E-mail:1284812623@qq.com
通讯作者:郑久建(1970-),男,博士,硕士生导师,主要从事工程防震减灾、桥梁结构理论研究.E-mail:zhengjiujian@126.com
更新日期/Last Update: 1900-01-01