On the bounds for structural system reliability

1991 ◽  
Vol 9 (4) ◽  
pp. 247-259 ◽  
Author(s):  
Weicheng Cui ◽  
David I. Blockley
Keyword(s):  
System Reliability ◽  
Structural System ◽  
Structural System Reliability

scholarly journals Study on the Stability of the Coal Seam Floor above a Confined Aquifer Using the Structural System Reliability Method

Geofluids ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Haifeng Lu ◽  
Xiuyu Liang ◽  
Nan Shan ◽  
You-Kuan Zhang
Keyword(s):  
Coal Seam ◽  
System Reliability ◽  
Failure Modes ◽  
Water Inrush ◽  
Series System ◽  
Mechanical Parameters ◽  
Structural System ◽  
Key Strata ◽  
Structural System Reliability ◽  
The Stability

A quantitative method of structural system reliability was proposed to study the influence of random rock mechanical parameters and loads on the stability of the coal seam floor above confined aquifers. To obtain the reliability probability of the floor, two modes of water-resistant floor failure were suggested as follows: (1) mining completely removed the water-resistant key strata of the floor. In this case, the failure modes were of three main types: mining failure, confined water intrusion, and combined mining failure and intrusion. (2) Failure modes included shear and tensile failures when the thickness of the key strata was greater than 0. On the basis of the elastic thin plate theory, the performance function that calculates the reliability probability of all modes could be obtained. The failure modes were regarded as the series system. The Monte Carlo method was employed to calculate the reliability probability of each failure mode and series system. The results showed that the random rock mechanical parameters and loads of the key strata significantly influence the antiwater inrush capacity of the floor. In addition, the water inrush coefficient and reliability probability can be simultaneously used as the evaluation indexes of water inrush risk. Both these indexes could improve the assessment of the reliability of the floor.

Structural System Reliability Analysis for a Self-Anchored Suspension Bridge

2012 ◽  
Vol 166-169 ◽  
pp. 1868-1871
Author(s):  
Bao Chu Yu ◽  
Sheng Yong Li
Keyword(s):  
Reliability Analysis ◽  
System Reliability ◽  
Suspension Bridge ◽  
Suspension Bridges ◽  
Complex Structures ◽  
Structural Elements ◽  
Structural System ◽  
Structural System Reliability ◽  
Bridge Structures ◽  
Bridge Reliability

A self-anchored suspension bridge is analyzed for its structural system reliability, and the bridge reliability is relatively high under vehicular load. Through seeking the distinct structural system fault modes the relatively weak structural elements can be identified, which can be the basis on its reasonable design and offer the reference to the analysis for the similar bridge structures. The results verify that the global -Unzipping method and the improved difference equivalent recursion algorithm is efficient and applicable for system reliability evaluation of the complex structures such as self-anchored suspension bridges.

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