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author:

Chen, Weihong (Chen, Weihong.) [1] (Scholars:陈伟宏) | Feng, Kai (Feng, Kai.) [2] | Wang, Ying (Wang, Ying.) [3] (Scholars:王莹) | Cui, Shuangshuang (Cui, Shuangshuang.) [4] | Lin, Yiwang (Lin, Yiwang.) [5]

Indexed by:

Scopus SCIE

Abstract:

A novel precast beam-column joint using shape memory alloy fibers-reinforced engineered cementitious composites (SMA-ECC) was proposed in this study to achieve self-repairing of cracks and internal damage after an earthquake. Three large-scale beam-column joints were tested under displacement reversals, including one monolithically cast conventional concrete joint, one engineered cementitious composites (ECC) reinforced precast concrete joint, and one SMA-ECC reinforced precast concrete joint. Failure mode, crack pattern, hysteretic behavior, stiffness degradation, displacement ductility, and energy dissipation capacity were compared and evaluated through a cyclic loading test. The test results showed that the ECC-based (ECC, SMA-ECC) precast joints have equivalent seismic properties to the monolithically cast concrete joint. ECC-based joints enhanced the ductility and energy dissipation capacity of the joint and, remarkably, reduced crack width. The SMA-ECC reinforced joint also exhibited instant self-healing in terms of the closure of small cracks after unloading. The self-healing performance was further evaluated through ultrasonic pulse tests, with the results showing that the use of SMA-ECC material was efficient in reducing the internal damage of beam-column joints after an earthquake.

Keyword:

beam-column joints engineered cementitious composites seismic performance self-repairing ultrasonic pulse test

Community:

  • [ 1 ] [Chen, Weihong]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
  • [ 2 ] [Feng, Kai]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
  • [ 3 ] [Wang, Ying]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
  • [ 4 ] [Lin, Yiwang]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
  • [ 5 ] [Cui, Shuangshuang]Fujian Univ Technol, Sch Civil Engn, Fuzhou 350118, Peoples R China

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Source :

BUILDINGS

ISSN: 2075-5309

Year: 2022

Issue: 9

Volume: 12

3 . 8

JCR@2022

3 . 1 0 0

JCR@2023

ESI Discipline: ENGINEERING;

ESI HC Threshold:66

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 5

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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