Large-scale testing of bridge system with unseating mitigation devices under spatially varying ground motions

B. Shrestha, H. Hao, K. M. Bi, L. X. He, W. X. Ren

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This paper presents large-scale shake table experiments carried out to identify the effects of spatially varying ground motions on the response of bridge segments. A shake table array system with two independent shake tables was used to simulate non-uniform ground motions. Bridge model, scaled to 1:6, having two frames of length 8.33 m each was tested with and without the restraining devices. The frames designed to have the fundamental period close to each other as recommended by prevailing bridge codes were tested to stochastically simulated bi-directional spatially varying ground motions. Experiments were also conducted on second bridge model with Superelastic Shape Memory Alloy (SMA) restrainers used to mitigate the large relative displacements at the bridge joint. The results show that spatially varying ground motions could lead to damaging pounding even when the fundamental period of adjacent frames are close to each other.

Original languageEnglish
Title of host publicationMechanics of Structures and Materials
Subtitle of host publicationAdvancements and Challenges - Proceedings of the 24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM24 2016
EditorsChunwei Zhang, Hong Hao
PublisherCRC Press/Balkem
Pages627-632
Number of pages6
ISBN (Print)9781138029934
Publication statusPublished - 2017
Externally publishedYes
Event24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2016 - Perth, Australia
Duration: 6 Dec 20169 Dec 2016

Publication series

NameMechanics of Structures and Materials: Advancements and Challenges - Proceedings of the 24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM24 2016

Conference

Conference24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2016
Country/TerritoryAustralia
CityPerth
Period6/12/169/12/16

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials

Fingerprint

Dive into the research topics of 'Large-scale testing of bridge system with unseating mitigation devices under spatially varying ground motions'. Together they form a unique fingerprint.

Cite this