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author:

Yan, X.-Y. (Yan, X.-Y..) [1] | Qi, A. (Qi, A..) [2] | Mao, H.-M. (Mao, H.-M..) [3] | Zhang, C. (Zhang, C..) [4] | Xu, X.-Y. (Xu, X.-Y..) [5]

Indexed by:

Scopus PKU CSCD

Abstract:

Mega-sub structures based on the sub-structure isolation can solve the problem of height-width ratio limitation of the base isolated high-rise structures. The existing studies mostly focus on the theoretical and numerical analysis of the mega-sub structure under far-field ground motions. An experimental model of mega-sub structure was designed and manufactured, which had three mega floors. Lead rubber bearings were installed at the bottom of the sub-structure, then comparison shaking table tests of the uncontrolled and controlled mega-sub structure under near-field and far-field ground motions were performed. The results showed that setting isolation layer at the connection between the sub-structure and the main-structure had obvious damping effect of Tuned Mass Damper (TMD) on the main-structure's seismic responses and significant isolation effect on the sub-structure's seismic reactions. The seismic responses of the main-structure and the sub-structure under near-field ground motions are bigger than that under far-field ground motions. Under strong near-field ground motion, there is pounding between isolated sub-structures and main-structure, which has disadvantages towards structure's degree of comfort and safety. © 2017, Engineering Mechanics Press. All right reserved.

Keyword:

Isolation; Mega-sub structure (megaframe-subframe structure system); Near-field ground motion; Pounding; Shaking table test

Community:

  • [ 1 ] [Yan, X.-Y.]College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350116, China
  • [ 2 ] [Qi, A.]College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350116, China
  • [ 3 ] [Mao, H.-M.]College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian 350118, China
  • [ 4 ] [Zhang, C.]College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350116, China
  • [ 5 ] [Xu, X.-Y.]College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350116, China

Reprint 's Address:

  • [Zhang, C.]College of Civil Engineering, Fuzhou UniversityChina

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Source :

Engineering Mechanics

ISSN: 1000-4750

Year: 2017

Issue: 11

Volume: 34

Page: 109-115 and 144

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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