Influence of earthquake angle on seismic performance of concrete highway bridges

ALTUNIŞIK A. C., Okur E. K.

GRADEVINAR, vol.75, no.10, pp.1013-1024, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 75 Issue: 10
  • Publication Date: 2023
  • Doi Number: 10.14256/jce.2256.2017
  • Journal Name: GRADEVINAR
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Communication Abstracts, ICONDA Bibliographic, Metadex, Directory of Open Access Journals, Civil Engineering Abstracts
  • Page Numbers: pp.1013-1024
  • Karadeniz Technical University Affiliated: Yes

Abstract

This study aims to evaluate the effect of earthquake angle on the seismic performance of a concrete highway bridge. As a numerical example, a twin prestressed concrete box-girder highway bridge was analysed using finite element methods. The bridge was subjected to the 1992 Erzincan earthquake ground accelerations in 19 directions with values ranging from 0 degrees to 90 degrees in 5-degree increments. To evaluate the effects of different earthquake angles on seismic performance, variations in the maximum displacements, internal forces and principal stresses on the bridge deck, columns, isolator and foundation were studied . The results changed considerably for different earthquake angles. Variations in the displacement, internal forces and principal stresses occurred at different incidence angles. In other words, there is no unique angle of incidence for each structure.