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[1] Liu Chengyin, Ren Lichen, Jiang Zhaoshuo, et al. Multihazard risk assessment of sea-crossing suspension bridges based on an improved Bayesian network method [J]. Journal of Southeast University (English Edition), 2024, 40 (2): 155-164. [doi:10.3969/j.issn.1003-7985.2024.02.006]
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Multihazard risk assessment of sea-crossing suspension bridges based on an improved Bayesian network method()
基于改进贝叶斯网络方法的跨海悬索桥多灾害风险评估
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
40
Issue:
2024 2
Page:
155-164
Research Field:
Civil Engineering
Publishing date:
2024-06-13

Info

Title:
Multihazard risk assessment of sea-crossing suspension bridges based on an improved Bayesian network method
基于改进贝叶斯网络方法的跨海悬索桥多灾害风险评估
Author(s):
Liu Chengyin1 2 Ren Lichen1 2 Jiang Zhaoshuo3 Fang Qiyang1 2
1School of Civil and Environmental Engineering, Harbin Institute of Technology(Shenzhen), Shenzhen 518055, China
2Guangdong Provincial Key Laboratory of Intelligent and Resilient Structures for Civil Engineering, Harbin Institute of Technology(Shenzhen), Shenzhen 518055, China
3School of Engineering, San Francisco State University, San Francisco 94132, USA
柳成荫1 2 任立辰1 2 江兆烁3 方其样1 2
1哈尔滨工业大学(深圳)土木与环境工程学院, 深圳518055; 2哈尔滨工业大学(深圳)广东省土木工程智能韧性结构重点实验室, 深圳518055; 3School of Engineering, San Francisco State University, San Francisco 94132, USA
Keywords:
sea-crossing suspension bridge risk assessment Bayesian network damage index structural reliability
跨海悬索桥 风险评估 贝叶斯网络 致灾因子 结构可靠度
PACS:
TU448.25
DOI:
10.3969/j.issn.1003-7985.2024.02.006
Abstract:
To assess the combined risks of long-span suspension bridges under continuous wind loads and occasional earthquakes, a risk assessment framework for cross-sea suspension bridges based on improved Bayesian networks was proposed by combining the quantitative analysis of the structural damage probability and the qualitative assessment of the damage consequences during bridge operation. First, the damage degree of each component was obtained according to the characteristics of the suspension bridge and the results of wind and earthquake analyses. Then, the failure probability of the bridge structure was calculated using the theory of structural reliability. Finally, the risk assessment model of the suspension bridge based on improved Bayesian networks was proposed to evaluate the risk during bridge operation. The results show that considering the varying impacts of different bridge components, the bridge damage level can be categorized into four degrees based on its disaster resilience. Taking the Lingdingyang Bridge as an example, the maximum risk level under multihazard risks is level 3 according to the proposed method, which requires traffic restrictions and maintenance. Therefore, this method can guide the emergency management strategy of sea-crossing bridges in response to multihazard risks.
为评估大跨度悬索桥在持续风荷载和偶发地震下的综合风险, 将桥梁运营期间结构损伤概率的定量分析和损伤后果的定性评估相结合, 提出了一种基于改进贝叶斯网络的跨海悬索桥风险评估框架.首先, 分析桥位处的风灾和地震灾害, 根据悬索桥的特点获取各构件的损伤程度;其次, 利用结构可靠度理论, 计算桥梁结构失效概率;最后, 提出了基于改进贝叶斯网络的悬索桥风险评估模型, 并对桥梁运营期风险进行评估.结果表明, 考虑不同构件对桥梁的影响程度, 根据桥梁的承灾能力将桥梁损伤分为4级.以伶仃洋大桥为例, 采用所提方法得到多灾害风险下该桥最大风险等级为3级, 需限制通行并进行检修, 说明该方法能够指导跨海桥梁应对多风险灾害的应急管理策略.

References:

[1] Ayyub B M. Risk analysis in engineering and economics[M]. New York, USA: CRC Press, 2003: 116-119.
[2] Yuan Z J, Wang H, Mao J X, et al. Influence of displacement limiting cable on static and dynamic characteristics of three-span continuous suspension bridge[J]. Journal of Southeast University(Natural Science Edition), 2023, 53(3): 395-401. DOI:10. 3969/j.issn.1001-0505.2023.03.003. (in Chinese)
[3] Liu F. In-depth investigation and analysis of recent bridge safety accidents[D].Changsha: Central South University, 2014.(in Chinese)
[4] Lu G, Wang K, Zhang P. Performance-based system seismic assessment for long-span suspension bridges under two-level seismic hazard[J].Journal of Southeast University(English Edition), 2019, 35(4):464-475. DOI: 10.3969/j.issn.1003-7985.2019.04.009.
[5] Hu J, Guo J, Ou J P. Measurement of wind field characteristics at a long-span suspension bridge[J]. Journal of Southeast University(English Edition), 2011, 27(3):328-334. DOI: 10.3969/j.issn.1003-7985.2011.03.020.
[6] Xu W X, Qian Y J, Zhang F, et al. Study on partial safety factors for assessment of existing bridges based on reliability theory considering verification loads[J]. Journal of Southeast University(Natural Science Edition), 2022, 52(2): 222-228. DOI:10.3969/j.issn.1001-0505.2022.02.003. (in Chinese)
[7] Su X, Mao J X, Wang H, et al. Automatic identification of modal parameters of long-span bridges considering uncertainty[J]. Journal of Southeast University(Natural Science Edition), 2023, 53(5): 850-856. DOI:10.3969/j.issn.1001-0505.2023.05.012. (in Chinese)
[8] Khuri A I, Mukhopadhyay S. Response surface methodology[J]. WIREs Interdisciplinary Reviews: Computational Statistics, 2010, 2(2): 128-149. DOI: 10.1002/wics.73.
[9] Rackwitz R, Flessler B. Structural reliability under combined random load sequences[J]. Computers & Structures, 1978, 9(5): 489-494. DOI: 10.1016/0045-7949(78)90046-9.
[10] Murphy K. Bayes net toolbox for Matlab[EB/OL].(2001-10-09)[2023-12-20]. https://www.cs.ubc.ca/~murphyk/Papers/bnt.pdf.
[11] Highway Planning and Design Institute. Construction drawing design for the cross-river link between Shenzhen and Zhongshan[R]. Guangzhou: Preliminary Office of Shenzhen-Zhongshan Link Project, 2017.(in Chinese)
[12] Shenzhen-Zhongshan Link Management Center. Investigation report of wind-resistance performance of Lingdingyang Bridge in Shen-Zhong Link[R]. Guangzhou: Preliminary Office of Shenzhen-Zhongshan Link Project, 2018.(in Chinese)
[13] Tao T Y, Gao W J, Jiang Z X, et al. Analysis on wind-induced vibration and its influential factors of long suspenders in the wake of bridge tower[J]. Journal of Southeast University(Natural Science Edition), 2023, 53(6): 1065-1071. DOI:10.3969/j.issn.1001-0505.2023.06.013. (in Chinese)
[14] Spanos P D, Mignolet M P. Simulation of homogeneous two-dimensional random fields: Part Ⅱ—MA and ARMA models[J]. Journal of Applied Mechanics, 1992, 59(2): 275-286. DOI:10.1115/1.2899499. (in Chinese)
[15] Davenport A G. The spectrum of horizontal gustiness near the ground in high winds[J]. Quarterly Journal of the Royal Meteorological Society, 1962, 88(376): 197-198. DOI: 10.1002/qj.49708837618
[16] Shenzhen-Zhongshan Link Management Center. Bridge location meteorological observation and wind parameter research mid-term report during the feasibility study phase of the Shenzhen-Zhongshan Link Project[R]. Guangzhou: Preliminary Office of Shenzhen-Zhongshan Link Project, 2013.(in Chinese)
[17] Li Y G. Earthquake safety evaluation report of the engineering site of the Shenzhen-Zhongshan Link Project[R]. Guangzhou: Guangdong Engineering Research Institute for Earthquake Prevention, 2011.(in Chinese)
[18] Dai X J, Li K M. Programming of artificial seismic wave based on Matlab[J]. Sichuan Building Materials, 2018, 44(9): 75-76.(in Chinese)
[19] Wang X W. Failure mode, seismic vulnerability and risk assessment of cable-stayed bridges under earthquake action[D]. Chengdu: Southwest Jiaotong University, 2017.(in Chinese)
[20] Liang Z Y. The theory of seismic design of irregular high-pier bridges[D]. Shanghai: Tongji University, 2007.(in Chinese)
[21] Huang W, Gould P L. 3-D pushover analysis of a collapsed reinforced concrete chimney[J]. Finite Elements in Analysis and Design, 2007, 43(11/12): 879-887. DOI: 10.1016/j.finel.2007.05.005.
[22] Highway Planning and Design Institute. Code for design of highway steel structure bridges:JTG D60—2004 [S]. Beijing: China Planning Press, 2015.(in Chinese)
[23] Cao L. Research on structural vulnerability of three-tower self-anchored suspension bridge based on reliability theory[D]. Xi’an: Chang’an University, 2019.(in Chinese)
[24] Imai K, Frangopol D M. System reliability of suspension bridges[J]. Structural Safety, 2002, 24: 219-259. DOI: 10.1016/S0167-4730(02)00027-9.

Memo

Memo:
Biographies: Liu Chengyin(1978—), male, doctor, professor;Jiang Zhaoshuo(corresponding author), male, doctor, associate professor, zsjiang@sfsu.edu.
Foundation items: The National Key Research and Development Program of China(No.2022YFB2602105), the National Natural Science Foundation of China(No.52378295), Guangdong Province Natural Science Foundation(No.2024A1515010296), Guangdong Provincial Key Laboratory of Intelligent and Resilient Structures for Civil Engineering(No.2023B1212010004), Shenzhen Science and Technology Program(No.KQTD20210811090112003).
Citation: Liu Chengyin, Ren Lichen, Jiang Zhaoshuo, et al.Multihazard risk assessment of sea-crossing suspension bridges based on an improved Bayesian network method[J].Journal of Southeast University(English Edition), 2024, 40(2):155-164.DOI:10.3969/j.issn.1003-7985.2024.02.006.
Last Update: 2024-06-20