地震及次生突发灾害下公路桥梁网络韧性评估*

doi:10.16265/j.cnki.issn1003-3033.2022.08.1457

中国安全科学学报 ›› 2022, Vol. 32 ›› Issue (8): 176-184.doi: 10.16265/j.cnki.issn1003-3033.2022.08.1457

地震及次生突发灾害下公路桥梁网络韧性评估*

刘振亮¹^,²^,³(), 苑溦⁴, 李素超²^,³^,⁵

¹ 石家庄铁道大学安全工程与应急管理学院,河北石家庄 050043
² 河北省大型结构健康诊断与控制实验室,河北石家庄 050043
³ 哈尔滨工业大学土木工程学院结构工程灾变与控制教育部重点实验室,黑龙江哈尔滨 150090
⁴ 江苏开放大学建筑工程学院,江苏南京 210036
⁵ 哈尔滨工业大学(威海) 土木工程系,山东威海 264209

收稿日期:2022-03-13 修回日期:2022-05-16 出版日期:2022-09-05
作者简介:
刘振亮 (1991—),男,河北南宫人,博士,讲师,主要从事基于机器学习的桥梁抗震性能、公路桥梁网络韧性评估技术等方面的研究。E-mail: 15B933009@hit.edu.cn。
苑溦,讲师。
李素超,副教授。
基金资助:
国家自然科学基金青年基金资助(51908251); 山东省自然科学基金面上项目资助(ZR2020ME247); 河北省大型结构健康诊断与控制重点实验室开放基金资助(KLLSHMC2105)

Resilience assessment of highway bridge networks subjected to both earthquakes and earthquake-induced secondary emergencies

LIU Zhenliang¹^,²^,³(), YUAN Wei⁴, LI Suchao²^,³^,⁵

¹ School of Safety Engineering and Emergency Management, Shijiazhuang Tiedao University,Shijiazhuang Hebei 050043, China
² Key Laboratory of Large Structure Health Monitoring and Control, Shijiazhuang Hebei 050043, China
³ Key Lab of Structures Dynamic Behavior and Control of China Ministry of Education, School of Civil Engineering, Harbin Institute of Technology, Harbin Heilongjiang 150090, China
⁴ School of Civil Engineering and Architecture, Jiangsu Open University, Nanjing Jiangsu 210036, China
⁵ School of Civil Engineering, Harbin Institute of Technology (Weihai), Weihai Shandong 264209, China

Received:2022-03-13 Revised:2022-05-16 Published:2022-09-05

摘要/Abstract

摘要：

为明确地震作用和地震引发的次生突发灾害(EISE)对公路桥梁网络韧性的影响,首先,提出综合考虑区域地震危险性、EISE特性、桥梁易损性和交通流特性等因素的公路桥梁网络韧性分析方法;然后,分析EISE的响应机制,建立EISE对公路桥梁网络影响的模型,并发展地震及EISE作用下公路桥梁网络功能状态分析方法;最后,建立公路桥梁网络应对地震及EISE韧性评估指标,通过美国旧金山部分公路桥梁网络在地震及EISE作用下的韧性评估算例,验证该方法的实用性和有效性。结果表明:与单体桥梁相比,桥梁网络性能受地震动和EISE的相互作用,不仅受地震强度的影响,还受到地震位置的影响。所提方法能够合理评估桥梁网络应对地震EISE韧性。

关键词: 地震, 地震引发的次生突发灾害(EISE), 公路桥梁网络, 韧性评估, 地震易损性

Abstract:

In order to clarify the effects of earthquakes and EISE on resilience of highway bridge networks, a resilience analysis method was proposed, which considered factors like regional seismic hazards, characteristics of EISE, structural fragility of bridges and traffic characteristics, etc. Subsequently, response mechanism to EISE was analyzed, based on which EISE influence model on highway bridge network was established, and a method to analyze the network state under influence of both earthquakes and EISE was proposed. Finally, several resilience indexes were developed, and verification was conducted on a highway bridge network in San Francisco, California subjected to both earthquakes and EISE effect. The results show that compared with individual bridges, the performance of bridge network was influenced by interaction between earthquake motion and EISE, including not only the intensity, but also locations of earthquakes. And the proposed methodology can assess resilience of bridge networks against EIES.

Key words: earthquake, earthquake-induced secondary emergencies(EISE), highway bridge network, resilience assessment, seismic fragility

刘振亮, 苑溦, 李素超. 地震及次生突发灾害下公路桥梁网络韧性评估*[J]. 中国安全科学学报, 2022, 32(8): 176-184.

LIU Zhenliang, YUAN Wei, LI Suchao. Resilience assessment of highway bridge networks subjected to both earthquakes and earthquake-induced secondary emergencies[J]. China Safety Science Journal, 2022, 32(8): 176-184.

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参考文献 17

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灾害级别T	复杂程度	危害程度	处置措施	影响
I级	比较简单	对区内少数财产、人员安全或社会秩序构成威胁	街道办等基层部门即可处置	较小
II级	比较复杂	对辖区较大范围内的财产、人身安全和社会秩序造成威胁	区政府能够处置	较大
III级	复杂	对辖区内外的社会财产、人身安全和社会秩序构成严重威胁	需要上一级主管部门统一调度应对	大
IV级	十分复杂	对辖区内外的社会财产、人身安全和社会秩序构成威胁	需要各级相关单位部门共同应对	很大

灾害级别T	影响范围	交通能力限制/%		交通需求增加/%
灾害级别T	影响范围	能力	速度	吸引量	生成量
I级	1个区域	0	0	[0,1)	[0,1)
II级	1个区域	0	25	[1,2)	[1,2)
III级	≤3个区域	25	25	[2,5)	[2,5)
IV级	>3个区域	50	50	[5,10)	[5,10)

地震及次生突发灾害下公路桥梁网络韧性评估*

Resilience assessment of highway bridge networks subjected to both earthquakes and earthquake-induced secondary emergencies

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