Interval Reliability Analysis for Gravity Retaining System of Deep Excavation
Jingchun Wang, Pengfei Xu, Weihong Hou · 2011
Deep excavation is a complex engineering system. It is necessary to research the system reliability of deep excavation in order to reduce the number of accidents. Considering the interval features of mechanic parameters of retaining system and soils of deep excavation, the interval analysis method was applied to establish two performance functions against overturning and sliding for the gravity retaining system of deep excavation. In terms of the limitation and shortage of the interval calculating rules, the affine arithmetic approach was adopted to compute corresponding reliability index. Then, the interval reliability of some typical systems, such as series system, parallel system, series-to-parallel system, etc, was studied based on the extension principle and the system analysis. The analysis process was given by an engineering example.