A probabilistic capacity spectrum strategy for the reliability analysis of bridge pile shafts considering soil structure interaction

Abstract

This paper presents a probabilistic capacity spectrum strategy for the reliability analysis of a bridge pile shaft, accounting for uncertainties in design factors in the analysis and the soil-structure interaction (SSI). Monte Carlo simulation method (MCS) is adopted to determine the probabilities of failure by comparing the responses with defined limit states. The analysis considers the soil structure interaction together with the probabilistic application of the capacity spectrum method for different types of limit states. A cast-in-drilledhole (CIDH) extended reinforced concrete pile shaft of a bridge is analysed using the proposed strategy. The results of the analysis show that the SSI can lead to increase or decrease of the structure's probability of failure depending on the definition of the limit states.

Modified generalized pushover analysis for estimating longitudinal seismic demands of bridges with elevated pile foundation systems

“…Piles are assumed to be embedded in ground with a predetermined depth. It should be noted that research on the interaction between piles and soil is still performed (Kim, 2011). Simplified model of the bridge is constructed and analyzed by the open source software OpenSees (Mazzoni, 2007).…”

Probabilstic Seismic Risk Evaluation of Rc Buildings

“…The general procedure for the implementation of the probabilistic Capacity Spectrum Method (CSM) [24] is as shown in Figure 3. Methods like POA/IDA are preferred depending on the uncertainty.…”

Direct displacement‐based seismic assessment procedure for multi‐span reinforced concrete bridges with single‐column piers

“…The efficacy of the standard force‐based approach is limited by the assumption of a linear elastic behavior with the application of a force reduction factor that should be able to take into account all the nonlinearities of the system (often strongly irregular). Nowadays, the most rational analysis and performance evaluation methods for practical applications seem to be simplified inelastic procedures , such as capacity spectrum method or modal pushover analysis . Recently, extending the direct displacement‐based design (DDBD) concepts , also a displacement‐based assessment procedure, was proposed , but it was developed only for frame and structural wall buildings .…”