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An integrated risk sensing system for geo-structural safety

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Journal of Rock mechanics and Geotechnical Engineering 2017年第2期9卷 226-238页

作者： H.W. Huang D.m. Zhang b.m. ayyub Key Laboratory of Geotechnical and Underground Engineering Department of Geotechnical EngineeringTongji University Shanghai China Center for Technology and Systems management Department of Civil and Environmental EngineeringUniversity of MarylandCollege ParkMDUSA

Over the last decades,geo-structures are experiencing a rapid development in *** potential risks inherent in the huge amount of construction and asset operation projects in China were well managed in the major project,*** project of Shanghai Yangtze tunnel in *** then,risk assessment of geostructures has been gradually developed from a qualitative manner to a quantitative ***,the current practices of risk management have been paid considerable attention to the assessment,but little on risk *** a result,the responses to risks occurrences after a comprehensive assessment are basically too *** this paper,a smart system for risk sensing incorporating the wireless sensor network(WSN) on-site visualization techniques and the resilience-based repair strategy was *** merit of this system is the real-time monitoring for geo-structural performance and dynamic pre-warning for safety of on-site *** sectional convergence,joint opening,and seepage of segmental lining of shield tunnel were monitored by the micro-electro-mechanical systems(mEmS) based *** light emitting diode(LED) coupling with the above WSN system was used to indicate different risk levels on *** sensing the risks and telling the risks in real time,the geo-risks could be controlled and the safety of geo-structures could be assured to a certain ***,a resilience-based analysis model was proposed for designing the repair strategy by using the measured data from the WSN *** application and efficiency of this system have been validated by two cases including Shanghai metro tunnel and underwater road tunnel.

关键词： Risk control Wireless sensor network(WSN) Geo-structure Resilience Robustness

Time-dependent reliability and resilience of aging structures exposed to multiple hazards in a changing environment

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Resilient Cities and Structures 2022年第3期1卷 40-51页

作者： Cao Wang bilal m.ayyub Aziz Ahmed School of Civil Mining and Environmental EngineeringUniversity of WollongongWollongongNSW 2522Australia Center for Technology and Systems management Department of Civil and Environmental EngineeringUniversity of MarylandCollege ParkMaryland 20742United States

Engineering structures are often subjected to the influences of performance deterioration and multiple hazards during their service lives,and consequently may suffer from damage/failure as a result of external *** reliability and resilience assessment is a powerful tool for quantifying the structural ability to withstand these environmental or operational *** paper proposes new formulas for structural time-dependent reliability and resilience analyses in the presence of multiple hazards,which are functions of the duration of the reference period of *** joint impacts of nonstationarities in multiple hazards due to a changing environment,as well as the deterioration of structural performance,are explicitly *** correlation between the structural resistances/capacities associated with different hazard types is modeled by employing a copula *** is observed that,under the context of multiple hazards and aging effects,the time-dependent resilience takes a generalized form of time-dependent *** proposed formulas can be used to guide the adaptive design of structures,where adaptive strategies are identified across a range of possible future service *** example is presented to demonstrate the applicability of the proposed method for structural reliability and resilience analyses.

关键词： Time-dependent reliability Time-dependent resilience Repairable structures Climate change multiple hazards Adaptive design

Projections of corrosion and deterioration of infrastructure in United States coasts under a changing climate

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Resilient Cities and Structures 2022年第1期1卷 98-109页

作者： Yating Zhang bilal m.ayyub Juan F.Fung University of maryland College ParkMD 20742United States National Institute of Standards and Technology GaithersburgMD 20899United States

Climate change can accelerate infrastructure deterioration in coastal areas because increased temperature and humidity can promote steel *** study(1)projects corrosion rate changes for reinforced concrete and steel structures in 223 coastal counties,(2)assesses the impact of corrosion rate changes on the useful life of structures,and(3)evaluates direct economic losses due to shortened useful life of highway bridges over the period *** results show that the useful life of concrete structures may decrease by 1.7-2.7%under the representative concentration pathway(RCP)8.5 and decrease by 0.7-1.1%under RCP 4.5 by the end of the 21st *** useful life of steel structures may decrease by 7.9-15.9%under RCP 8.5 and 3.3-6.7%under RCP *** bridges may suffer an average loss of$6.5-11.7/m 2 under RCP 8.5 and$3.3-16.5/m 2 under RCP 4.5 due to shortened useful *** bridges may suffer an average loss of$73.4-111.3/m 2 under RCP 8.5 and$46.9-81.2/m 2 under RCP *** both climate scenarios,10%of counties may have negative losses and 10%of counties may have losses greater than$20 million due to corrosion rate changes for concrete and steel *** results reveal the spatial difference of climate change impacts on infrastructural deterioration and suggest the importance of developing regional specific adaptation strategies.

关键词： Climate change Infrastructure deterioration Highway bridges Useful life Coastal regions

THE DETERmINATION OF TOPOLOGICAL CONNECTIVE STRUCTURE PARAmETERS

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THE DETERMINATION OF TOPOLOGICAL CONNECTIVE STRUCTURE PARAME...

Incorporating extreme event attribution into climate change adaptation for civil infrastructure:methods,benefits,and research needs

Sixteenth Congress of the International Union of Crystallography

作者： b.müller Institute of Physical Chemistry Friedrich-Schiller-University of JenaGermany

＜正＞The complex and complicated structures of glasses,gels,polymeres, melts,amorphous semiconductors,thin layers etc. determined by a great structure variety on the different structure levels,mostly in thermodynamic non-equilibrium,gives practically the result that both their structure analysis and their structure theory represent a scientific problem till

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Resilient Cities and Structures 2024年第1期3卷 103-113页

作者： Yating Zhang bilal m.ayyub Juan F.Fung Zachary m.Labe Department of Civil and Environmental Engineering University of MarylandCollege ParkMD 20742 Applied Economics Office Engineering LaboratoryNational Institute of Standards and TechnologyGaithersburgMD 20899 Program in Atmospheric and Oceanic Sciences Princeton UniversityPrincetonNJ 08540

In the last decade,the detection and attribution science that links climate change to extreme weather and climate events has emerged as a growing field of research with an increasing body of *** paper overviews the methods for extreme event attribution(EEA)and discusses the new insights that EEA provides for infrastructure *** found that EEA can inform stakeholders about current climate risk,support vulnerability-based and hazard-based adaptations,assist in the development of cost-effective adaptation strategies,and enhance justice and equity in the allocation of adaptation *** engineering practice shifts from a retrospective approach to a proactive,forward-looking risk management strategy,EEA can be used together with climate projections to enhance the comprehensiveness of decision making,including planning and preparing for un-precedented extreme ***,attribution assessment can be more useful for adaptation planning when the exposure and vulnerability of communities to past events are analyzed,and future changes in the probability of extreme events are *** large uncertainties inherent in event attribution and climate projections,future research should examine the sensitivity of engineering design to climate model uncertainties,and adapt engineering practice,including building codes,to uncertain future *** this study focuses on adaptation planning,EEA can also be a useful tool for informing and enhancing decisions related to climate mitigation.

关键词： Climate change Extreme weather and climate events Extreme event attribution Infrastructure adaptation Uncertainties

COLLISION bELTS AND mOSAIC TERRAINS OF THE YANGTZE bASIN-NORTHERN PART OF INDOSINIAN PENINSULA (***)

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Geotectonica et metallogenia 1994年第Z2期18卷 12-13页

作者： CHIKOV b.m TheUnitedInstituteofGeology GeophysicsandMineralogySiberianBranchofRussianAcademyofSciencesNovosibirskRussia

mESOZOIC-CENOZOIC COLLISION STRUCTURES IN THE SOUTH-EAST OF THE ASIA

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Geotectonica et metallogenia 1996年第Z1期20卷 111-112页

作者： Chikov b.m Institute of Geology of SB of RASRussiaInstituteof Geology of SB of RASRussia

Complicated system(collage)of block structures and orogenic belts had been formed in the S-E of Asia by collision prosesses in mesozoic and Cenozoic periods. This collage began to form in early mesozoic as a result of destruction of the continental Proterozoic-Paleozoic crust and movements of large *** and Yangtze blocks(small plates)are the most characteristic block-terranes of the region; myanmar and Songpan block systems are less representative. Variouse types of collision belts are situated between these blocks and on the periphery of the plates. They consist of concordant folded systems and shear zones. Some of these systems and shear

关键词： mESOZOIC-CENOZOIC COLLISION STRUCTURES IN THE SOUTH-EAST OF THE ASIA

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I FIND·迷宫大冒险开心奥运会

I FIND 视觉大发现欢乐运动会大图搜索2.0版

2015年

作者： b.m动漫工作室

07051604

ISBN: (纸本)9787518009923

07051604

关键词：智力开发

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