桥台背墙对连续梁桥地震易损性的影响

doi:10.13229/j.cnki.jdxbgxb.20211174

摘要/Abstract

摘要：

为探究桥台背墙对连续梁桥各主要构件地震易损性的影响，以一座四跨连续梁桥为例，使用OpenSees软件分别建立是否考虑桥台背墙的桥梁非线性模型。根据场地类型，从PEER数据库中筛选了100条地震波，对两模型分别进行计算，使用云图法建立各构件易损性曲线。研究表明：桥台背墙对连续梁桥的各构件抗震性能有显著影响；桥台背墙对各构件地震易损性的影响随着损伤程度的增大而增大，并在完全损伤状态，影响程度达到最大，桥墩易损性均值偏差达到85.5%；在各级损伤状态下，桥台背墙对桥墩的地震易损性影响最大。因此，建议在分析连续桥梁结构抗震性能时，考虑桥台背墙。

关键词: 桥梁工程, 连续梁桥, 桥台背墙, 地震易损性, 云图法, 易损性均值

Abstract:

To explore the impact of the abutment back wall on the seismic fragility of each continuous girder bridge component， two nonlinear models of the four-span continuous girder bridge with or without back wall were built separately using OpenSees software. Models were analyzed by 100 seismic waves selected from PEER（Pacific Earthquake Engineering Research Center） database， based on class II site. Then the fragility curves of each component were established by cloud method. The results show that the abutment back wall has significant effect on the seismic fragility of continuous girder bridge. The effect of the abutment back wall on seismic responses of each component increases with the increase of the damage degree. In the state of complete damage， the influence degree reaches maximum， and the mean deviation of pier fragility reaches 85.5%. Considering the abutment back wall have the greatest influence on the seismic response of piers. Therefore， it is suggested that the abutment back wall should be considered when analyzing the seismic performance of continuous bridge structures.

Key words: bridge engineering, continuous girder bridge, abutment backwall, seismic fragility, cloud method, median fragilities

中图分类号:

U442.5

张玥,刘传森,宋飞. 桥台背墙对连续梁桥地震易损性的影响[J]. 吉林大学学报(工学版), 2023, 53(5): 1372-1380.

Yue ZHANG,Chuan-sen LIU,Fei SONG. Influence of abutment back wall on continuous girder bridge's seismic fragility[J]. Journal of Jilin University(Engineering and Technology Edition), 2023, 53(5): 1372-1380.

图/表 14

图1

图2

表1

桥台背墙两分量模型参数"

结构	F/10³kN	$Δ 1$ /cm	$Δ 2$ /cm	$Δ 3$ /cm	$Δ 4$ /cm	$Δ 5$ /cm
钢筋	4.63	0.23	-	-	3.71	5.30
混凝土	4.26	-	1.06	2.65	-	-
背墙	8.89	0.23	1.06	2.65	3.71	5.30

表1

图3

图4

图5

图6

图7

表2

构件极限状态的均值与变异系数"

桥梁构件	EDP	轻微损伤		中等损伤		严重损伤		完全损伤
桥梁构件	EDP	$S c$	$β c$	$S c$	$β c$	$S c$	$β c$	$S c$	$β c$
桥墩	$μ ?$	1	0.246	1.25	0.246	5.91	0.472	16.54	0.472
支座	$μ Δ$	1	0.246	1.5	0.246	2	0.472	2.5	0.472
桥台	$δ / m m$	25	0.246	50	0.246	100	0.472	150	0.472

表2

图8

图9

图10

图11

图12

参考文献 20

1	Bryant G N, Reginald D. Seismic fragility methodology for highway bridges using a component level approach[J]. Earthquake Engineering & Structural Dynamics, 2007, 36(6): 823-839.
2	Kim S H, Feng M Q. Fragility analysis of bridges under ground motion with spatial variation[J]. International Journal of Non-Linear Mechanics, 2003, 38(5): 705-721.
3	Yi J H, Youn J Y, Yun C B. Seismic risk assessment of bridges using fragility analysis[J]. Journal of the Earthquake Engineering Society of Korea, 2004, 8(6): 31-43.
4	Mahmoud E G, Raj V S. Stiffnesses of abutments on piles in seismic bridge analyses[J]. Soils and Foundations, 1998, 38(1): 77-87.
5	郭军军, 钟剑, 袁万城, 等.考虑桥台性能影响的连续梁桥地震易损性分析[J].哈尔滨工程大学学报, 2017, 38(4): 532-537.
	Guo Jun-jun, Zhong Jian, Yuan Wan-cheng, et al.Seismic fragility analysis of a continuous bridge considering the performance of abutments[J].Journal of Harbin Engineering University,2017,38(4): 532-537.
6	吴文朋, 李立峰, 徐卓君, 等.不确定性对钢筋混凝土桥梁系统地震易损性的影响[J].地震工程与工程振动, 2018, 38(6): 161-170.
	Wu Wen-peng, Li Li-feng, Xu Zhuo-jun, et al. Influences of uncertainties on system seismic fragility for the reinforced concrete bridges[J]. Earthquake Engineering and Engineering Dynamics, 2018, 38(6): 161-170.
7	郑凯锋, 陈力波, 庄卫林, 等.基于概率性地震需求模型的桥梁易损性分析[J].工程力学, 2013, 30(5): 165-187.
	Zheng Kai-feng, Chen Li-bo, Zhuang Wei-lin, et al.Bridge vulnerability analysis based on probabilistic seismic demand models[J]. Engineering Mechanics, 2013, 30(5): 165-187.
8	Pang Y T, Cai L, Zhong J. Seismic performance evaluation of fiber-reinforced concrete bridges under near-fault and far-field ground motions[J]. Structures, 2020, 28: 1366-1383.
9	邵长江, 崔皓蒙, 漆启明, 等.近断层大跨RC轻柔拱桥纵向阻尼器减震研究[J/OL].[2021-05-12].
	Shao Chang-jiang, Cui Hao-meng, Qi Qi-ming, et al. Longitudinal seismic mitigationofnear-fault long-span RC soft-lightenarch bridge based on viscous damper[J/OL].[2021-05-12].
10	刘洋.桥台背墙对桥梁地震反应的影响[D].西安: 西安科技大学建筑与土木工程学院, 2019.
	Liu Yang. Effect of the back wall of abutment on the seismic response of bridge[D]. Xi'an: School of Architecture and Civil Engineering, Xi'an University of Science and Technology, 2019.
11	宋飞, 李建中.桥台模拟方法对连续梁桥地震反应的影响[J].结构工程师, 2016, 32(1): 85-91.
	Song Fei, Li Jian-zhong. Effect of abutment modeling on the seismic response of continuous bridges[J]. Structural Engineers, 2016, 32(1): 85-91.
12	吴文朋.考虑不确定性的钢筋混凝土桥梁地震易损性研究[D].湖南: 湖南大学土木工程学院, 2016.
	Wu Wen-peng. Seismic fragility of reinforced concrete bridges with consideration of various sources of uncertainty[D]. Hunan: School of Civil Engineering, Hunan University, 2016.
13	Aviram A, Mackie K R, Stojadinovic B. Effect of abutment modeling on the seismic response of bridge structures[J]. Earthquake Engineering and Engineering Vibration, 2008, 7(4): 395-402.
14	王翼, 莫金生, 李建中.桥台混凝土挡块对连续梁桥地震响应的影响[J].同济大学学报: 自然科学版, 2017, 45(7): 948-953, 1043.
	Wang Yi, Mo Jin-sheng, Li Jian-zhong. Effect of concrete shear keys at abutment on seismic response of continuous girder bridge[J]. Journal of Tongji University(Natural Science),2017, 45(7): 948-953, 1043.
15	Hwang H, 刘晶波.地震作用下钢筋混凝土桥梁结构易损性分析[J].土木工程学报, 2004, 37(6): 47-51.
	Hwang H, Liu Jing-bo. Seismic fragility analysis of reinforced concrete bridges[J]. China Civil Engineering Journal, 2004, 37(6):47-51.
16	Agrawal A K, Ghosn M, Alampalli S, et al. Seismic fragility of retrofitted multispan continuous steel bridges in New York[J]. Journal of Bridge Engineering, 2011, 17(4): 562-575.
17	李立峰, 李辉辉, 徐开铎, 等.考虑随机变量相关性的桥梁地震易损性分析[J].湖南大学学报: 自然科学版, 2017, 44(7): 118-127.
	Li Li-feng, Li Hui-hui, Xu Kai-duo, et al. Bridge seismic fragility analysis considering random variable correlations[J]. Journal of Hunan University(Natural Sciences), 2017, 44(7): 118-127.
18	Nielson B G. Analytical fragility curves for highway bridges in moderate seismic zones[D]. Atlanta: School of Civil and Environmental Engineering, Georgia Institute of Technology, 2005.
19	赵云鹏, 于天来, 焦峪波, 等. 异形桥梁损伤识别方法及参数影响分析[J]. 吉林大学学报: 工学版, 2016, 46(6): 1858-1866.
	Zhao Yun-peng, Yu Tian-lai, Jiao Yu-bo, et al. Damage identification method and factor evaluation for irregular-shaped bridge[J]. Journal of Jilin University(Engineering and Technology Edition), 2016, 46(6): 1858-1866.
20	Cornell C A, Jalayer F, Hamburger R O, et al. Probabilistic basis for 2000 SAC federal emergency management agency steel moment frame guidelines [J]. Structural Engineering, 2002, 128(4): 526-533.

相关文章 15

[1]	兰树伟,周东华,陈旭,莫南明. 双柱式高墩桥梁整体稳定性的实用算法[J]. 吉林大学学报(工学版), 2023, 53(4): 1105-1111.
[2]	孙琪凯,张楠,刘潇,周子骥. 基于Timoshenko梁理论的钢-混组合梁动力折减系数[J]. 吉林大学学报(工学版), 2023, 53(2): 488-495.
[3]	叶华文,段智超,刘吉林,周渝,韩冰. 正交异性钢⁃混组合桥面的轮载扩散效应[J]. 吉林大学学报(工学版), 2022, 52(8): 1808-1816.
[4]	王立峰,肖子旺,于赛赛. 基于Bayesian网络的多塔斜拉桥挂篮系统风险分析的新方法[J]. 吉林大学学报(工学版), 2022, 52(4): 865-873.
[5]	张彦玲,王灿,张旭,王昂洋,李运生. 不同吊杆形式悬索桥人致振动分析及舒适度评价[J]. 吉林大学学报(工学版), 2022, 52(11): 2644-2652.
[6]	钟昌均,王忠彬,柳晨阳. 悬索桥主索鞍承载力影响因素及结构优化[J]. 吉林大学学报(工学版), 2021, 51(6): 2068-2078.
[7]	陈巍,万田保,王忠彬,厉萱,沈锐利. 悬索桥主缆除湿的内部送气管道设计与性能[J]. 吉林大学学报(工学版), 2021, 51(5): 1749-1755.
[8]	郭殊伦,钟铁毅,闫志刚. 大跨度斜拉桥拉索的抖振响应计算方法[J]. 吉林大学学报(工学版), 2021, 51(5): 1756-1762.
[9]	高凯,刘纲. 全局临界强度分枝-约界法的有效强度改进[J]. 吉林大学学报(工学版), 2021, 51(2): 597-603.
[10]	宫亚峰,宋加祥,谭国金,毕海鹏,刘洋,单承新. 多车桥梁动态称重算法[J]. 吉林大学学报(工学版), 2021, 51(2): 583-596.
[11]	孔庆雯,谭国金,王龙林,王勇,魏志刚,刘寒冰. 基于有限元方法的裂缝箱梁桥自振特性分析[J]. 吉林大学学报(工学版), 2021, 51(1): 225-232.
[12]	陈华,陈耀嘉,谢斌,王鹏凯,邓朗妮. CFRP筋粘结式锚固体系界面失效演化机制及粘结强度计算[J]. 吉林大学学报(工学版), 2020, 50(5): 1698-1708.
[13]	宫亚峰,宋加祥,毕海鹏,谭国金,胡国海,林思远. 装配式箱涵结构缩尺模型静载试验及有限元分析[J]. 吉林大学学报(工学版), 2020, 50(5): 1728-1738.
[14]	高昊,王君杰,刘慧杰,王剑明. 连续梁桥地震行为可控设计准则及实用装置[J]. 吉林大学学报(工学版), 2020, 50(5): 1718-1727.
[15]	蒲黔辉,刘静文,赵刚云,严猛,李晓斌. 高性能树脂混凝土加固混凝土偏压柱承载力理论分析[J]. 吉林大学学报(工学版), 2020, 50(2): 606-612.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed