A new seismic retrofitting method for steel bridge piers in Japan

Weiwei Lin*, Nozomu Taniguchi, Shinya Satake, Fujikazu Okubo, Takeaki Kubo

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

Japanese highway bridge design codes have been modified a lot since the Hyogoken-Nanbu Earthquake in 1995, but only used for designing new bridges. The aged steel piers constructed with old design code should be strengthened appropriately to adopt with current design code. With the purpose of improving the seismic performance of existing steel piers, a preventive seismic retrofit method by using GFRP plate, rapid hardening concrete, rubber-latex mortar, and reinforcement is proposed in this paper. The static loading tests on the steel piers before and after strengthening were performed to confirm the effects of the present strengthening method. Moreover, three-dimensional FE models were built to make a comparison study between the strengthened and the original steel piers. Load versus deflection relationship and sectional strain distribution on the piers were measured and compared between original piers and strengthened piers. Both experimental and numerical results indicate that the present strengthening method can greatly enhance the stiffness and reduce the stress levels of steel pier, resulting in the extension service life and improvement of the seismic performance of aged steel piers.

Original languageEnglish
Title of host publicationIABSE Conference, Vancouver 2017
Subtitle of host publicationEngineering the Future - Report
Pages1289-1296
Number of pages8
ISBN (Electronic)9783857481536
Publication statusPublished - 1 Jan 2017
MoE publication typeNot Eligible
EventIABSE Symposium: Engineering the Future - Vancouver, Canada
Duration: 21 Sep 201723 Sep 2017
Conference number: 39

Publication series

NameIABSE Conference, Vancouver 2017: Engineering the Future - Report

Conference

ConferenceIABSE Symposium
CountryCanada
CityVancouver
Period21/09/201723/09/2017

Keywords

  • Loading test
  • Numerical analysis
  • Seismic retrofit
  • Steel piers

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