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author:

Su, Sibo (Su, Sibo.) [1] | Zhang, Guangda (Zhang, Guangda.) [2] (Scholars:张广达) | Han, Qiang (Han, Qiang.) [3] | Xu, Li (Xu, Li.) [4] (Scholars:许莉) | Zhou, Daxing (Zhou, Daxing.) [5] | Du, Xiuli (Du, Xiuli.) [6]

Indexed by:

EI Scopus SCIE

Abstract:

The traditional reinforced concrete canopy using cast-in-place (CIP) technology, is associated with problems such as long construction period, high environmental pollution, and low construction quality. Prefabricated assembly technology, due to its modern and highly industrialized characteristics, provides a promising solution to address the mentioned challenges. In this study, an innovative Ultra High-Performance concrete (UHPC)-filled grouted corrugated duct connection (UGCDC) approach was introduced for prefabricated canopy beam-column joints, considering the structural characteristics of the canopy. To evaluate the seismic behavior of canopy beam-column joints utilizing the UGCDC method, three comprehensive full-scale quasi-static experiments were conducted. Meanwhile, relevant seismic behavior indexes were extracted from the hysteresis curve, and the seismic performance of canopy joints was assessed by analyzing the effects of different research parameters on seismic behavior indicators. In addition, based on the OpenSees platform, a fiber finite element model (FEM) was established that incorporated the bond-slip behavior at the UGCDC joint. The research results indicated that the seismic behavior of canopy beam-column joints using UGCDC is basically consistent with that of CIP joints, and setting a shear key in UGCDC joints can improve ductility by 22.4 %. In terms of bearing capacity, there is not much difference among the three specimens, but in terms of initial stiffness, the specimen using UGCDC and shear key and the specimen using UGCDC have increased by 6.0 % and 9.6 % compared to CIP specimen, respectively. The developed FEM can predict the hysteresis characteristic of canopy joints using UGCDC. UGCDC method is a reliable connection form for canopy beam-column connection joint, which is suitable for medium to high intensity earthquake areas. Finally, a seismic performance assessment method of prefabricated canopy beam-column joints using UGCDC was proposed.

Keyword:

Beam-column joints connection Prefabricated canopy Seismic performance Simplified fiber model UHPC-Filled grouted corrugated ducts

Community:

  • [ 1 ] [Su, Sibo]Beijing Univ Technol, State Key Lab Bridge Engn Safety & Resilience, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 2 ] [Han, Qiang]Beijing Univ Technol, State Key Lab Bridge Engn Safety & Resilience, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 3 ] [Du, Xiuli]Beijing Univ Technol, State Key Lab Bridge Engn Safety & Resilience, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 4 ] [Zhang, Guangda]Fuzhou Univ, Coll Civil Engn, 2 Xueyuan Rd, Fuzhou 350108, Fujian, Peoples R China
  • [ 5 ] [Xu, Li]Fuzhou Univ, Coll Civil Engn, 2 Xueyuan Rd, Fuzhou 350108, Fujian, Peoples R China
  • [ 6 ] [Zhou, Daxing]China Railway Construct Grp Co Ltd, China Railway Construct Bldg,20 Shijingshan Rd, Beijing 100040, Peoples R China

Reprint 's Address:

  • [Zhang, Guangda]Fuzhou Univ, Coll Civil Engn, 2 Xueyuan Rd, Fuzhou 350108, Fujian, Peoples R China;;

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Source :

JOURNAL OF BUILDING ENGINEERING

Year: 2024

Volume: 96

6 . 7 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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