Seismic response of underground structure influenced by the second mode shape of site; [二阶振型对场地地震变形及地下结构地震响应的影响] - Details

Author：

Jiang, Z. (Jiang, Z..) | Xu, C. (Xu, C..) | Du, X. (Du, X..) | Liu, J. (Liu, J..)

Indexed by：

Scopus

Abstract：

The　1st　mode　shape　of　a　site　is　usually　applied　as　the　deformation　mode　of　the　soil　when　conducting　the　seismic　response　and　pushover　analyses　of　underground　structures.　However，the　higher　mode　of　the　site　can　also　be　excited　under　earthquake　motions.　The　analysis　results　would　be　inaccuracy　without　the　effects　caused　by　the　higher　mode　shape　of　the　site.　In　the　study，the　seismic　site　deformation　and　seismic　response　of　the　tunnel　influenced　by　the　2nd　mode　shape　of　the　site　were　investigated，based　on　results　of　1-g　shaking　table　model　tests　of　the　free-field　soil　and　tunnel.　Results　show　that　the　influence　ratio　of　the　2nd　mode　shape　on　the　seismic　site　deformation　mode　was　within　20%.　But　it　could　change　the　regional　deformation　mode　of　the　soil　along　the　elevation，which　could　notably　influence　the　seismic　responses　of　underground　structures　buried　in　the　regions.　More　attention　should　be　paid　for　the　effects　caused　by　the　2nd　mode　shape　of　site.　©　2022　Science　Press.　All　rights　reserved.

Keyword：

seismic study on underground structure seismic deformation the second mode shape seismic site response shaking table test

Author Community：

[ 1 ] [Jiang Z.]Key Laboratory of Urban Security and Disaster Engineering, the Ministry of Education, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Jiang Z.]National Engineering Research Center for Green & Safe Construction Technology, Beijing Urban Construction Design and Development Group Co.，Ltd., Beijing, 100037, China
[ 3 ] [Jiang Z.]Department of Civil Engineering, Tsinghua University, Beijing, 100084, China
[ 4 ] [Xu C.]Key Laboratory of Urban Security and Disaster Engineering, the Ministry of Education, Beijing University of Technology, Beijing, 100124, China
[ 5 ] [Du X.]Key Laboratory of Urban Security and Disaster Engineering, the Ministry of Education, Beijing University of Technology, Beijing, 100124, China
[ 6 ] [Liu J.]Department of Civil Engineering, Tsinghua University, Beijing, 100084, China

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Source ：

Earthquake Engineering and Engineering Dynamics

ISSN： 1000-1301

Year： 2022

Issue： 3

Volume： 42

Page： 113-121

Cited Count：

WoS CC Cited Count： 0

SCOPUS Cited Count： 1

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 6

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