Progressive-Collapse Simulation and Critical Region Identification of a Stone Arch Bridge

Abstract

Progressive collapses of arch bridges have repeatedly occurred in recent years, resulting in many casualties and significant property losses. Based on an actual recent and serious progressive collapse of a stone arch bridge, this paper simulated the complete progressive-collapse process using the general purpose finite element (FE) program, MSC.Marc. The simulation adopted a 3D FE model and performed a nonlinear analysis using the contact algorithm in conjunction with the element deactivation technique. The potential causes of the progressive-collapse of the stone arch bridge were also evaluated. Furthermore, the importance of different components of the stone arch bridge was determined with the conception of generalized structural stiffness; thus, the most critical and vulnerable regions of the bridge were identified. The results of the simulated progressive-collapse process agreed well with the actual process, and the predicted critical regions were both correct and realistic. This study also provides important references for the analysis and prevention of progressive collapses of stone arch bridges.

Assessment of sliding‐rubber isolator effect in progressive collapse of bridges under two scenarios

“…Olmati and Giuliani investigated the strength of a long span suspension bridge according to the damage location and then proposed critical design factors to counteract the increase in structural responses. Xu et al simulated progressive collapse in a stone arch bridge to identify its most critical regions by utilizing the concept of structural stiffness. The research by Das et al may be pointed out as another study on modeling of progressive collapse using nonlinear dynamic analysis method.…”

Seismic Collapse Analysis of RC Highway Bridges Based on a Simplified Multiscale FE Modeling Approach

“…There are three methods used for simulating the earthquake-induced failures of bridges: Discrete Element Method (DEM), Applied Element Method (AEM), and Finite Element Method (FEM). Currently, FEM is one of the most commonly used methods of simulating the collapse process of bridges [3][4][5]. A detailed 3D FE model elaborately simulated the damage location and the local failure mechanism of highway bridges [6][7][8].…”

Theoretic Framework and Finite Element Implementation on Progressive Collapse Simulation of Masonry Arch Bridge

“…A masonry arch bridge Dixituojiang Bridge under construction over the Dixituojiang River in Hunan, China, suddenly collapsed on the 13st of August 2007 and there were many victims in this disaster [2]. The report about the collapse of the Dixituojiang Bridge clarified improper installation and inadequate temporary structure to support the bridge components were the main reasons.…”

“…In China, there are many aging masonry arch bridges as well and they need prompt inspection, reinforcement, and maintenance. Many studies focused on the progressive collapse and clarified that local deficiencies may trigger collapse [2].…”