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A Dynamic-Bayesian-Networks-Based Resilience Assessment Approach of structure systems: Subsea Oil and Gas Pipelines as A Case Study

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China Ocean Engineering 2020年第5期34卷 597-607页

作者： CAI Bao-ping ZHANG Yan-ping YUAN Xiao-bing GAO Chun-tan LIU Yong-hong CHEN Guo-ming LIU Zeng-kai JI Ren-jie National Engineering Laboratory of Offshore Geophysical and Exploration Equipment China University of PetroleumQingdao 266580China College of Mechanical and Electronic Engineering China University of PetroleumQingdao 266580China

Under unanticipated natural disasters, any failure of structure components may cause the crash of an entire structure system. Resilience is an important metric for the structure system. Although many resilience metrics and assessment approaches are proposed for engineering system, they are not suitable for complex structure systems, since the failure mechanisms of them are different under the influences of natural disasters. This paper proposes a novel resilience assessment metric for structure system from a macroscopic perspective, named structure resilience, and develops a corresponding assessment approach based on remaining useful life of key components. Dynamic Bayesian networks(DBNs) and Markov are applied to establish the resilience assessment model. In the degradation process, natural degradation and accelerated degradation are modelled by using Bayesian networks, and then coupled by using DBNs. In the recovery process, the model is established by combining Markov and DBNs. Subsea oil and gas pipelines are adopted to demonstrate the application of the proposed structure metric and assessment approach.

关键词： structure resilience structure system remaining useful life dynamic Bayesian networks

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Structural Design Conception and Analysis for the Structural system of Large Flexible Airship

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Journal of Shanghai Jiaotong university(Science) 2010年第6期15卷 756-761页

作者：高海健陈务军付功义 Space structures Research Centre Shanghai Jiaotong University

Nine kinds of structure systems were proposed for the flexible airship according to the inherent structural characteristics. On the basis of equilibrium configuration of the oating airship subjected to the ascent helium buoyancy and gravity,the structural analysis procedure was developed and the computation models were presented for the airship. Then the systematic numerical analysis was carried out for a 25 m long airship,the comparison of principal stress of envelope was performed between the nonlinear numerical analysis result and the engineering elastic theory result. The structural performances were evaluated thoroughly. Finally,the reasonable structural systems were proposed. Accordingly,the results herein were valuable to structural design for flexible airship especially for large flexible airship.

关键词： flexible airship structure system equilibrium configuration

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Key technology and innovation of Sutong Bridge

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Engineering Sciences 2010年第2期8卷 31-38页

作者： Zhang Xiongwen Jiangsu Provincial Sutong Bridge Construction Commanding Department Nanjing 210006 China

Sutong Bridge is a cable-stayed bridge across Yangtze River with the main span of 1 088 m. This article outlines technical challenges,key technology and innovation in the design and construction such as scour protection,lowering steel cofferdam,construction platform establishment,construction and control of pylons,fabrication and damping of long cables,erection and control of steel box girders.

关键词： Sutong Bridge key technology innovation structure system foundation pylon stay cables steel girder

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