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Author:

Wang, Meng (Wang, Meng.) | Tong, Yunshan (Tong, Yunshan.) | Sun, Yi (Sun, Yi.) | Yang, Lu (Yang, Lu.)

Indexed by:

EI Scopus SCIE

Abstract:

In order to realize the urgent requirement for damage control and rapid recovery of structural function after earthquake excitations using more convenient strategies, a bolted steel frame equipped with replaceable dissipative angle steel connection components was proposed. These angle steels with designed free deformation length were made of low yield point steels (LYP) which have superior ductility, dissipation capacity and fatigue performance. The plastic deformation was expected to be circumscribed within the LYP angle steels, which behaved as structural fuses to protect the primary frame members and were easy to be demolished and replaced. To achieve this desired damage control objective, the quantitative influence of the key factors on the seismic performance and the structural fuse effect was evaluated via extensive numerical parametric analyses. The design procedure of the corresponding sizes of LYP connection components to act as structural fuses was further summarized on account of energy dissipation behavior. The analysis results demonstrated that the larger the strength reduction factor (the smaller design resistance capacity coefficient), free deformation length and height of beam section promoted the structural fuse action of the LYP connection components. In terms of comprehensive consideration of structural ductility, load-carrying capacity, structural fuse performance and material efficiency, the design resistance capacity coefficient (the strength reduction factor) was suggested as.. d = 0.8 similar to 1.0, and the free deformation length ranged from 0.67 to 1.1 times of beam width. The critical value of the design resistance capacity coefficient to achieve desirable structural fuse effect was formulated by integrating above-mentioned key influencing factors. Consequently, the design resistance capacity coefficient was required to be less than this critical value to realize sufficient damage control objective.

Keyword:

Structural fuse Free deformation length Angle steel connection component Low yield point steel (LYP) Numerical analysis

Author Community:

  • [ 1 ] [Wang, Meng]Beijing Jiaotong Univ, Coll Civil Engn, Beijing 100044, Peoples R China
  • [ 2 ] [Tong, Yunshan]Beijing Jiaotong Univ, Coll Civil Engn, Beijing 100044, Peoples R China
  • [ 3 ] [Sun, Yi]Beijing Jiaotong Univ, Coll Civil Engn, Beijing 100044, Peoples R China
  • [ 4 ] [Yang, Lu]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 5 ] [Yang, Lu]Beijing Univ Technol, Beijing Engn Res Ctr High Rise & Large Span Prest, Beijing 100124, Peoples R China

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Source :

THIN-WALLED STRUCTURES

ISSN: 0263-8231

Year: 2022

Volume: 179

6 . 4

JCR@2022

6 . 4 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:49

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 12

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

Affiliated Colleges:

Online/Total:1280/10841981
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