CALCULATION METHOD FOR PURE TORSIONAL CAPACITY OF FRP REINFORCED CONCRETE MEMBERS CONSIDERING SIZE EFFECT

被引：0
|
作者：
Jin L. [1 ]
Zhu H.-J. [1 ]
Du X.-L. [1 ]
机构：
[1] The Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing
来源：
Gongcheng Lixue/Engineering Mechanics | 2024年 / 41卷 / 04期
关键词：
calculation method; FRP bars; meso-scale simulation; pure torsional failure; size effect;
D O I：
10.6052/j.issn.1000-4750.2022.04.0325
中图分类号：
学科分类号：
摘要：
Fiber reinforced polymer (FRP) bar, as a non-corrosive alternative material to steel bar, it has become a viable solution for corrosion problems of steel. FRP bars have been widely used in prestressed structures, offshore platforms, coastal wharfs and components exposed to long-term corrosion chemical environments. At present, the design method of pure torsional capacity of FRP reinforced concrete members is seldom proposed except for the CSA S806-12. It is primarily presented in a modified form of the existing formula for calculating the pure torsional capacity of reinforced concrete members, considering the difference of material mechanical parameters between FRP bars and steel bars. In this paper, a pure torsional failure behavior of FRP reinforced concrete columns with a maximum cross-section width of 1000 mm was studied and, the size effect law of nominal torsional strength was revealed by using inspected three-dimensional meso-numerical simulation methods. Based on the simulation data, the existing calculation formulas of the pure torsional capacity of FRP reinforced concrete members were compared. In addition, upon the GB 50010−2010 on the calculation method of pure torsional capacity of reinforced concrete components, a calculation method of pure torsional capacity of FRP reinforced concrete members considering size effect was proposed. By comparing the existing test data, the correctness and rationality of the proposed formula were verified. © 2024 Tsinghua University. All rights reserved.
引用
收藏
页码：19 / 28
页数：9
相关论文
共 29 条
  • [1] MOHAMED H M, BENMOKRANE B., Reinforced concrete beams with and without FRP web reinforcement under pure torsion, Journal of Bridge Engineering, 21, 3, (2016)
  • [2] ZHANG P, CHEN B, LIU Y, Et al., Experimental study on the axial compression behavior of columns confined by BFRP ties, Composite Structures, 258, (2021)
  • [3] JUMAA G B, YOUSIF A R., Size effect on the shear failure of high-strength concrete beams reinforced with basalt FRP bars and stirrups [J], Construction and Building Materials, 209, pp. 77-94, (2019)
  • [4] RAGAB K S, EISA A S., Torsion behaviour of steel fibered high strength self compacting concrete beams reinforced by GFRP bars, International Journal of Structural Engineering, 7, 9, pp. 218-228, (2013)
  • [5] ZHOU J, SHEN W, WANG S., Experimental study on torsional behavior of FRC and ECC beams reinforced with GFRP bars [J], Construction and Building Materials, 152, pp. 74-81, (2017)
  • [6] BAZANT Z P, SENER S, PRAT P C., Size effect tests of torsional failure of plain and reinforced concrete beams, Materials and Structures, 21, 6, pp. 425-430, (1988)
  • [7] JIN L, ZHU H, DU X., Meso-scale modelling of size effect on pure torsional-shear of RC columns [J], Archives of Civil and Mechanical Engineering, 22, 1, pp. 1-19, (2022)
  • [8] JIN Liu, ZHU Huajie, DU Xiuli, Size effect numerical analysis on pure torsional failure of RC columns, Engineering Mechanics, 39, 7, pp. 227-236, (2022)
  • [9] No. 440.1R-15, Guide for the design and construction of structural concrete reinforced with FRP bars, (2015)
  • [10] GB 50608−2010, Technical code for infrastructure application of FRP composites, (2010)
123