Seismic performance of a masonry arch viaduct subjected to foreshocks and a mainshock

Izabela J Drygala,Joanna M Dulinska,Łukasz Bednarz,Jerzy Jasienko

doi:10.1051/matecconf/201821109003

Abstract

The main objective of this work is to present the results of seismic numerical investigation which was conducted for a masonry arch viaduct. The viaduct which was chosen as a case study, was subjected to foreshock-mainshock sequence. For the numerical evaluation a 3D finite element model (FEM) of the structure was assembled with the ABAQUS/Standard software program. In the numerical simulations a Barcelona Model (BM) was applied as a constitutive material model to represent nonlinear behaviour of the masonry arches of the investigated viaduct under the seismic actions. Taken into consideration the results of calculations the evident nonlinear behaviour of the masonry arches was detected under the earthquakes. The plastic strains as well as the cracking were achieved in some areas of the arches of the viaduct after seismic foreshock-mainshock sequence. Also proposed methodology for strengthening and monitoring of the structure of the viaduct in the future.

Highlights

The studies of damages of masonry arch type bridge caused by strong seismic loading have revealed that the protection of these structures turned out to be an important technical task
Taken into considaration the evaluation procedures which were presented by different authors [5, 6, 7, 8], the numerical detection of damages in structures subjected to seismic loadings is very important and significant stage
For the study aims a finite element (FE) model of the structure was assembled with the ABAQUS/Standard software program

Summary

Introduction

The studies of damages of masonry arch type bridge caused by strong seismic loading have revealed that the protection of these structures turned out to be an important technical task. For monumental masonry bridges erected on seismic activity areas, the dynamic loading caused by earthquake is one of the most destruction factor [1, 2, 3]. It must be pointed out, that the vast majority of seismic mainshocks are usually preceded by various foreshocks within a short period of time [4]. Taken into considaration the evaluation procedures which were presented by different authors [5, 6, 7, 8], the numerical detection of damages in structures subjected to seismic loadings is very important and significant stage. The numerical simulations with nonlinear material models deliver good quality data for future project of the reinforcement of the structural elements which are threatened [9]

Objectives

Results

Conclusion