Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (9): 160-164.

• Architecture & Civil Engineering • Previous Articles    

Safety Evaluation Method for Laminated Rubber Bearings of Bridge Based on Extension Theory

Zheng Yi1,2  Jia Jin-qing1  Shen Xiao-jun3  Xiong Wei-shi4  Gao Fei3  Zhang Yan-nian5   

  1. 1. Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian 116023,Liaoning,China; 2. Building Material Science Institute of Liaoning,Shenyang 110032,Liaoning,China; 3. Chongqing Testing Center for Quality of Highway Engineering,Chongqing 400060,China; 4. Chongqing Communications Construction Group,Chongqing 400010,China; 5. Civil Engineering College,Shenyang Jianzhu University,Shenyang 110168,Liaoning,China
  • Received:2012-03-31 Revised:2012-05-29 Online:2012-09-25 Published:2012-08-01
  • Contact: 郑怡(1979-) ，男，博士，高级工程师，主要从事结构可靠性研究． E-mail:dandongzy@126.com
  • About author:郑怡(1979-) ，男，博士，高级工程师，主要从事结构可靠性研究．
  • Supported by:

    国家“十二五”科技支撑计划重点项目( 2011BAJ08B04) ; 重庆市科技攻关计划项目( CSTC2011AC6157) ; 质检公益性行业科研专项( 201210040) ; 沈阳市科学技术计划项目( F11-251-4-00) ; 沈阳建筑大学省级重点实验室开放基金资助项目( JG200705，CL-200903) ; 沈阳市人才资源开发专项资金资助项目( 2011040503028， 2010041203023)

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Abstract:

In order to comprehensively evaluate the safety performance of the laminated rubber bearings of bridges,a matter-element model based on some safety factors is constructed by using the matter-element theory and the extension mathematics as the theoretical framework. Then,the evaluation index system and evaluation criteria of the safety factors are built up,and the qualitative indexes are quantified. Moreover,each index is processed for it to be normalized and dimensionless,and a simple dependent function is used to determine the weight of each index. A case study shows that the proposed method is feasible,that is,it can not only accurately describe the safety grades of the bearings but also provide the distance between the adjacent safety grades,and can transform the bouncing type rating method in the current standard into the continuous rating method.

Key words: extension theory, bridge bearings, matter-element model, evaluation, safety performance

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