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Integrating flood and earthquake resilience: a framework for assessing urban community resilience against multiple hazards

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JOURNAL OF SAFETY SCIENCE AND RESILIENCE 2024年第3期5卷 330-343页

作者： Ahmadi, Zahra Ghasemi, Mahdi Khavarian-Garmsir, Amir Reza Ahmadi, Mohammad Yazd Univ Fac Art & Architecture Urbanism Dept Yazd Iran Yazd Univ Fac Art & Architecture Dept Architecture Yazd Iran Univ Isfahan Fac Geog Sci & Planning Dept Geog & Urban Planning Esfahan Iran Islamic Azad Univ Dept Civil Engn Tabriz Branch Tabriz Iran

Floods and earthquakes are the most common natural disasters, causing significant damage and casualties in urban communities. Although academic research has focused on assessing cities' ability to withstand these natural disasters, there is a lack of established frameworks for evaluating resilience against multiple hazards. This research integrates the earthquake and flood resilience indicators to create a comprehensive resilience assessment framework. This study integrated seismic and flood resilience indicators and categorized them into 27 clusters. It also used the DEMATEL (Decision-Making Trial and Evaluation Laboratory) method to determine the significance of clusters and prioritize them. This research identified 13 cause clusters and 14 effect clusters of indicators for seismic and flood resilience. The 'response capacity' cluster has the most impact on seismic and flood resilience, while the 'transportation and accessibility' cluster is the most affected cluster. This article presents a framework for evaluating flood and seismic resilience and makes suggestions for future research.

关键词： Resilience Flood Earthquake Dematel Resilience assessment multiple hazards DEMATEL MAP

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Towards multiple hazard resilient bridges:a methodology for modeling frequent and infrequent time-varying loads Part I,Comprehensive reliability and partial failure probabilities

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Earthquake Engineering and Engineering Vibration 2012年第3期11卷 293-301页

作者： Zach Liang George C.Lee Department of Mechanical and Aerospace Engineering University at Buffalo Department of Civil Structural and Environmental EngineeringUniversity at Buffalo

The current AASHTO load and resistance factor design （LRFD） guidelines are formulated based on bridge reliability, which interprets traditional design safety factors into more rigorously deduced factors based on the theory of probability. This is a major advancement in bridge design specifications. However, LRFD is only calibrated for dead and live loads. In cases when extreme loads are significant, they need to be individually assessed. Combining regular loads with extreme loads has been a major challenge, mainly because the extreme loads are time variables and cannot be directly combined with time invariant loads to formulate the probability of structural failure. To overcome these difficulties, this paper suggests a methodology of comprehensive reliability, by introducing the concept of partial failure probability to separate the loads so that each individual load combination under a certain condition can be approximated as time invariant. Based on these conditions, the extreme loads （also referred to as multiple hazard or MH loads） can be broken down into single effects. In Part II of this paper, a further breakdown of these conditional occurrence probabilities into pure conditions is discussed by using a live truck and earthquake loads on a bridge as an example. There are three major steps in establishing load factors from MH load distributions：（1） formulate the failure probabilities; （2） normalize various load distributions; and （3） establish design limit state equations. This paper describes the formulation of the failure probabilities of single and combined loads.

关键词： multiple hazards bridge probability-based design comprehensive reliability partial failure probability

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The active rotary inertia driver system for flutter vibration control of bridges and various promising applications

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Science China(Technological Sciences) 2023年第2期66卷 390-405页

作者： ZHANG ChunWei Multidisciplinary Center for Infrastructure Engineering Shenyang University of TechnologyShenyang 110870China

Active control technology has been investigated and applied in numerous building structures and infrastructures since 1972 when it was firstly introduced into the civil engineering field by Professor JTP ***,half a century has passed,a variety of control systems have been invented and implemented by researchers and engineers from all over the *** recent years have witnessed remarkable research attempts and progress devoted to the development in this area based on modern control ***,there are still some unknown areas which are worthy of being explored in *** of such examples is the application of tuned mass dampers(TMD)to the flutter vibration control of long span *** applications of TMDs to bridges have been sighted in practice,their genuine effectiveness remains a serious *** issues relating to how the coupled effect of TMD’s linear force being restricted by the rotational velocity of bridge’s deck during wind excitations which may eventually leads to flutter vibrations,remains *** unusual phenomena and limitations were initially discovered and reported by the author sixteen years ago when investigating the barge ship crane hook’s swing motion *** recent years,the author has invented the active rotary inertia driver(ARID)system which now has been granted patents in China,the US,Europe(including the UK,France,and Germany),Russia,Brazil,India,South Africa,Canada,Australia,Japan and Korean,*** ARID is an active control system which could exert direct control torque or moment to the target structures with rotational motions or vibrations natures,including and not limited to buildings,bridges or offshore platforms subjected to winds,earthquakes,and waves ***,the ARID control system and its methodology can also be applicable to various mechanical systems including but not limited to cranes,vehicles,trains,ships,aircrafts,space crafts,satellites,and *** this paper,the theor

关键词： structural vibration control active control rotational vibration swing motion long-span bridges flutter vibration multiple hazards

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