近断层脉冲型地震作用下大跨拱桥动力响应分析

Abstract
Figure/Table
References (19)
Related Citation (15)

Download: PDF (6130 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract To reveal the effects of the characteristics of velocity pulses and pulse parameters on the seismic response of large-span arch bridge under near-fault pulse-type ground motions, the record-decomposition incorporation (RDI) method was first introduced to synthesize artificial near-fault pulse-type ground motions. By comparing the accuracy of different equivalent pulse models, the synthesis method was optimized and validated. Taking a large-span arch bridge as the engineering background, artificial near-fault ground motions with different parameter characteristics were synthesized using the optimized method, and the influence mechanism of pulse components and residual components on the seismic response of the arch bridge was discussed. Finally, the influence of different pulse parameters on the seismic response of the arch bridge was studied. The research results show that the optimized RDI method can effectively simulate the original near-fault pulse-type ground motions and obtain artificial ground motions with different pulse parameters. The high-frequency components of near-fault ground motion records are found to have a significant adverse effect on the seismic response of the arch bridge. As the amplitude of the pulse increases, the effects of forward-directionality and fling-step pulses on the seismic response of the arch bridge are both obviously increased; and when the pulse period increases, both types of pulse effects have significant adverse effects on the seismic response of the arch bridge. With respect to the influence of the pulse number, the near-fault ground motions with bidirectional pulses cause a greater in-plane response of the arch bridge when compared to those with multi-directional pulses.

Key words： long-span arch bridge near-fault pulse-type ground motions pulse parameters record-decomposition incorporation method seismic response

Received: 31 July 2023 Published: 15 May 2024

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	XU Lueqin1
	2
	YUAN Maojun1
	ZUO Ying1
	SHEN Zhengxuan1
	XU Lihan1

Cite this article:

XU Lueqin1,2,YUAN Maojun1, et al. Dynamic response analysis of long-span arch bridge under near-fault pulse seismic motion[J]. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(9): 94-104.

URL:

http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2024/V43/I9/94

[1] 贾俊峰, 杜修力, 韩强. 近断层地震动特征及其对工程结构影响的研究进展[J]. 建筑结构学报, 2015, 36(1): 1-12. JIA Junfeng, DU Xiuli, HAN Qiang. A state-of-the-art review of near-fault earthquake ground motion characteristics and effects on engineering structures [J]. Journal of Building Structures, 2015, 36(1): 1-12. [2] MAKRIS N, BLACK C J. Evaluation of peak ground velocity as a “good” intensity measure for near-source ground motions [J]. Journal of Engineering Mechanics, 2004, 130(9): 1032-1044. [3] 陈令坤, 张楠, 胡超, 等. 近断层地震方向脉冲效应对高速铁路桥梁弹塑性反应的影响[J]. 振动与冲击, 2013, 32(15): 149-155+167. CHEN Lingkun, ZHANG Nan, HU Chao, et al. Effects of near-fault directivity pulse-like ground motion on elastic-elastic seismic response of high-speed railway bridge [J]. Journal of Vibration and Shock, 2013, 32(15): 149-155+167. [4] 陈笑宇, 王东升, 付建宇, 等. 近断层地震动脉冲特性研究综述[J]. 工程力学, 2021, 38(8): 1-14+54. CHEN Xiaoyu, WANG Dongsheng, FU Jianyu, et al. Review of ground motion impulse characteristics of near fault [J]. Engineering Mechanics, 2021, 38(8): 1-14+54. [5] MAVROEIDIS G P. A mathematical representation of near-fault ground motions [J]. Bulletin of the Seismological Society of America, 2003, 93(3): 1099-1131. [6] 田玉基, 杨庆山, 卢明奇. 近断层脉冲型地震动的模拟方法[J]. 地震学报, 2007, 29(1): 77-84+114. TIAN Yuji, YANG Qingshan, LU Mingqi. Simulation method of pulsed ground motion near fault [J]. Acta Seismologica Sinica, 2007, 29(1): 77-84+114. [7] HOSEINI V S R, SHARBATDAR M K, AMIRI G G, et al. Dominant pulse simulation of near fault ground motions [J]. Earthquake Engineering and Engineering Vibration, 2013, 12(2): 267-278. [8] WU Gang, ZHAI Changhai LI Shuang, et al. Effects of near-fault ground motions and equivalent pulses on large crossing transmission tower-line system [J]. Engineering Structures, 2014, 77: 161-169. [9] HE W L, AGRAWAL A K. Analytical model of ground motion pulses for the design and assessment of seismic protective systems [J]. Journal of Structural Engineering, 2008, 134(7): 1177-1188. [10] YANG Dixiong, ZHOU Jilei. A stochastic model and synthesis for near-fault impulsive ground motions [J]. Earthquake Engineering and Structural Dynamics, 2015, 44(2): 243-264. [11] GHAHARI S F, JAHANKHAH H, GHANNAD M A. Study on elastic response of structures to near-fault ground motions through record decomposition [J]. Soil Dynamics and Earthquake Engineering, 2010, 30(7): 536-546. [12] LI Shuai, ZHANG Fan, WANG Jingquan, et al. Effects of near-fault motions and artificial pulse-type ground motions on super-span cable-stayed bridge systems [J]. Journal of Bridge Engineering, 2017, 22(3): 04016128. [13] 侯烈, 张龙奇, 师新虎. 近断层脉冲效应对大跨度结合梁斜拉桥地震响应的影响[J]. 铁道科学与工程学报, 2019, 16(10): 2514-2520. HOU Lie, ZHANG Longqi, SHI Xinhu. Influence of near-fault pulse effect on seismic response of long-span composite girder cable-stayed bridge [J]. Journal of Railway Science and Engineering, 2019, 16(10): 2514-2520. [14] 江辉, 楚芹, 崔禹婷. 地震动脉冲参数对近断层区深水桥墩动力响应的影响分析[J]. 铁道学报, 2015, 37(8): 80-90. JIANG Hui, CHU Qin, CUI Yuting. Influence of pulse parameters on dynamic response of bridge pier in deep water excited by near-fault earthquakes [J]. Journal of the China Railway Society, 2015, 37(8): 80-90. [15] XU Weibing, LUO Zhenyuan, YAN Weiming, et al. Impact of pulse parameters on the seismic response of long-period bridges [J]. Structure and Infrastructure Engineering, 2020, 16(10): 1461-1480. [16] ZHOU Tuo, JIANG Lizhong, XIANG Ping, et al. Effects of near-fault pulse-type ground motions on high-speed railway simply supported bridge and pulse parameter analysis [J]. Bulletin of Earthquake Engineering, 2022, 20: 6167-6192. [17] XIN Lifeng, LI Xiaozhen, ZHANG Zetian, et al. Seismic behavior of long-span concrete-filled steel tubular arch bridge subjected to near-fault fling-step motions [J]. Engineering Structures, 2019, 180: 148-159. [18] 龚浩, 张洪豪, 徐略勤, 等. 近断层地震动对上承式拱桥动力响应的影响[J]. 世界地震工程, 2022, 38(3): 117-126. GONG Hao, ZHANG Honghao, XU Lueqin, et al. Effect of near-fault ground motions on seismic response of deck-type arch bridge [J]. World Earthquake Engineering, 2022, 38(3): 117-126. [19] 李子奇, 李亮亮, 王力, 等. 脉冲参数对CFST拱桥地震反应的影响[J]. 中国安全生产科学技术, 2022, 18(9): 225-231. LI Ziqi, LI Liangliang, WANG Li, et al. Influence of pulse parameters on seismic response of CFST arch bridge [J]. Journal of Safety Science and Technology, 2022, 18(9): 225-231.