›› 2013, Vol. 34 ›› Issue (S1): 386-392.

• Geotechnical Engineering • Previous Articles     Next Articles

Fuzzy random reliability analysis of rigid anti-sliding pile structure anchoring depth

XIAO Zun-qun1,2,4,XU Cai-yun3,JIANG Yong2,JIAO Ru-yi2,YANG Tian-bing2   

  1. 1. School of Environment and Civil Engineering, Wuhan Institute of Technology, Wuhan 430073, China; 2. China Petroleum Pipeline Scientific Research Institute, Langfang, Hebei 065000, China; 3. Wuhan CTI-CRSRI Engineering & Environment Co., Ltd., Yangtze River Scientific Research Institute, Wuhan 430014, China; 4. College of Civil Engineering & Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2012-09-19 Online:2013-08-30 Published:2014-06-09

Abstract: The major unstable mode of rigid anti-sliding pile structure is soil body at the side of anchoring section is pressed to lose stabilization. For calculating fuzzy random reliability index and reliability of rigid anti-sliding pile structure, at first, according to the extremum of pile-side-stress ?y below anti-sliding pile sliding surface in two depths, structural performance functions of anchoring depth reliability analysis of rigid anti-sliding pile is set up respectively. While calculating, the method of definite value is utilized to compare two extreme values at first. The structural performance function corresponding to greater extreme value is adopted to perform reliability analysis of anti-sliding pile. Then considering the randomness and fuzziness of structural reliability analysis of anti-sliding pile, fuzzy random reliability analysis model is set up. Based on first-order second-moment method (FOSM), the formula of calculating fuzzy random reliability is put forward. By using L-R type fuzzy numbers to describe the mean value and variance of random numbers, fuzzy numbers is disposed by decomposing theorem. Fuzzy reliability index and reliability of the structure are obtained. According to this method, a certain rigid anti-sliding pile is calculated by using MATLAB procedure. The fuzzy random reliability index and reliability of structure are obtained. The results of calculation and safety coefficient method have very good consistency.

Key words: rigid anti-sliding pile, fuzzy random reliability;L-R type fuzzy numbers, first-order second-moment method(FOSM)

CLC Number: 

  • TU 472
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