Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (7): 127-130.

• Architecture & Civil Engineering • Previous Articles     Next Articles

Reliability of Coupling of Strength and Stiffness in Structure System

Li Yi1  Zhao Wen1  Liang Lei1  Li Shen-gang1  Yun-qi2   

  1. 1. School of Resource and Civil Engineering , Northeastem Univ. , Shenyang 11 0004 , Liaoning , China;2. Buiding Science Reseach Institute of Liaoning Province , Shenyang 110005 , Liaoning , China
  • Received:2006-11-06 Online:2007-07-25 Published:2007-07-25
  • Contact: 李艺(1972-)，女，副教授，博士后，主要从事结构可靠性及混凝土材料研究. E-mail:liyiyyq@163.com
  • About author:李艺(1972-)，女，副教授，博士后，主要从事结构可靠性及混凝土材料研究.
  • Supported by:

    国家自然科学基金资助项目( 50508008) ;辽宁省博士启动基金资助项目(20041014)

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Abstract:

According to the concept of computational structural mechanics , a method to analyze the coupling reliability of strength and stiffness in the frame structure is presented to continuously generate the intemal force and limitstate function of the structure. The proposed method is then combined with the branch-and-bound method to evaluate the total failure probability of the system. As the proposed method simplifies the global stiffness matrÏx operation, the continuous analysis of reliability for the variational structure can be realized , and a new criterion of the degenerating from the structure into the mechanism can be obtained. Thus , the searching speed of systemic failure modes and the efficiency of reliability analysis are both improved.

Key words: structure system, reliability, strength, stiffness, coupling, continuous analysis