Shake table test of long span cable-stayed bridge subjected to near-fault ground motions considering velocity pulse effect and non-uniform excitation - Details

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Abstract：

This　paper　presents　the　results　of　shake　table　tests　of　a　scaled　long　span　cable-stayed　bridge　(CSB).　The　design　principles　of　the　scaled　CSB　are　first　introduced.　The　first　six　in-plane　modes　are　then　identified　by　the　stochastic　subspace　identification　(SSI)　method.　Furthermore,　shake　table　tests　of　the　CSB　subjected　to　the　non-pulse　near-field　(NNF)　and　velocity-pulse　near-fault　(PNF)　ground　motions　are　carried　out.　The　tests　indicated　that:　(1)　the　responses　under　longitudinal　uniform　excitation　are　mainly　contributed　by　antisymmetric　modes;　(2)　the　maximum　displacement　of　the　tower　occurs　on　the　tower　top　node,　the　maximum　acceleration　response　of　the　tower　occurs　on　the　middle　cross　beam,　and　the　maximum　bending　moment　of　the　tower　occurs　on　the　bottom　section;　(3)　the　deformation　of　the　tower　and　girder　subjected　to　uniform　excitation　is　not　always　larger　than　that　subjected　to　non-uniform　excitation,　and　therefore　the　non-uniform　case　should　be　considered　in　the　seismic　design　of　CSBs.　©　2020　by　the　authors.　Licensee　MDPI,　Basel,　Switzerland.

Keyword：

Cable-stayed bridge; Near-fault motion; Non-uniform excitation; Shake table test; Velocity pulse

Community：

[ 1 ] [Zhang, C.]College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China
[ 2 ] [Zhang, C.]Key Laboratory of Urban Security & Disaster Engineering of MOE, Beijing University of Technology, Beijing, 100124, China
[ 3 ] [Fu, G.]College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China
[ 4 ] [Lai, Z.]College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China
[ 5 ] [Du, X.]Key Laboratory of Urban Security & Disaster Engineering of MOE, Beijing University of Technology, Beijing, 100124, China
[ 6 ] [Wang, P.]Key Laboratory of Urban Security & Disaster Engineering of MOE, Beijing University of Technology, Beijing, 100124, China
[ 7 ] [Dong, H.]Key Laboratory of Urban Security & Disaster Engineering of MOE, Beijing University of Technology, Beijing, 100124, China
[ 8 ] [Jia, H.]School of Civil Engineering, Southwest Jiaotong University, Chengdu, 610031, China

Reprint 's Address：

张超
[Zhang, C.]College of Civil Engineering, Fuzhou University, Key Laboratory of Urban Security & Disaster Engineering of MOE, Beijing University of TechnologyChina

Email：

zhangchao1985@fzu.edu.cn

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Source ：

Applied Sciences (Switzerland)

ISSN： 2076-3417

Year： 2020

Issue： 19

Volume： 10

Page： 1-20

2 . 2 1 7

JCR@2018

CAS Journal Grade：3

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SCOPUS Cited Count： 6

ESI Highly Cited Papers on the List： 0 Unfold All

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Chinese Cited Count：

30 Days PV： 3

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