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author:

Chen, Baochun (Chen, Baochun.) [1] (Scholars:陈宝春) | Zhou, Jialiang (Zhou, Jialiang.) [2] | Zhang, Dong (Zhang, Dong.) [3] (Scholars:张冬) | Sennah, Khaled (Sennah, Khaled.) [4] | Nuti, Camillo (Nuti, Camillo.) [5]

Indexed by:

EI Scopus SCIE

Abstract:

This study aims to understand the shear performance of reinforced ultra-high performance concrete (R-UHPC) short beams and to propose a calculation method for their shear capacity. A total of 11 R-UHPC short beam specimens were tested to investigate the effects of key parameters on the shear capacity, including steel fiber volume fraction, longitudinal reinforcement ratio, stirrup ratio, and shear span-to-depth ratio. Experimental results indicated that the shear capacity increased with the increase of steel fiber volume fraction, longitudinal reinforcement ratio, and stirrup ratio, while it decreased with the increase of shear span-to-depth ratio. Results also showed that for R-UHPC beams, the effect of shear span-to-depth ratio can only be ignored for a ratio less than 1.2 rather than 1.5 that is required for reinforced concrete (RC) beams by the Chinese design code. Moreover, it was found that the calculation methods for the shear capacity of R-UHPC beams in the current codes underestimated the shear capacity of the specimens by 30 % similar to 50 %, as these methods did not consider the aforementioned significant parameters. A calculation method was proposed based on the modified compression field theory (MCFT) to comprehensively consider all the aforementioned parameters. The proposed method exhibited a higher accuracy and less dispersion as compared to the methods specified by current codes.

Keyword:

Design method Failure mode Modified compression field theory (MCFT) Shear capacity Short beams Ultra-high performance concrete (UHPC)

Community:

  • [ 1 ] [Chen, Baochun]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
  • [ 2 ] [Zhou, Jialiang]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
  • [ 3 ] [Zhang, Dong]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
  • [ 4 ] [Sennah, Khaled]Ryerson Univ, Dept Civil Engn, Toronto, ON, Canada
  • [ 5 ] [Zhou, Jialiang]Roma Tre Univ, Dept Architecture, I-00153 Rome, Italy
  • [ 6 ] [Nuti, Camillo]Roma Tre Univ, Dept Architecture, I-00153 Rome, Italy

Reprint 's Address:

  • [Zhang, Dong]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China;;

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Source :

ENGINEERING STRUCTURES

ISSN: 0141-0296

Year: 2023

Volume: 277

5 . 6

JCR@2023

5 . 6 0 0

JCR@2023

ESI Discipline: ENGINEERING;

ESI HC Threshold:35

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 7

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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