Study on Shear Behavior of Steel Reinforced ECC Beams under Reversed Cyclic Loading

被引：0
|
作者：
Yuan F. [1 ]
Chen M. [1 ]
Wang W. [2 ]
机构：
[1] School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang
[2] China Railway Construction Electrification Bureau Group Co., Ltd., Beijing
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2018年 / 40卷 / 08期
关键词：
Engineered cementitious composite (ECC); Experiment; Reversed cyclic loading; Seismic performance; Shear resistance;
D O I：
10.3969/j.issn.1001-8360.2018.08.019
中图分类号：
学科分类号：
摘要：
High-ductility engineered cementitious composite (ECC) is a high performance fiber-reinforced cementitious composite with pseudo strain hardening and multiple cracking propagation properties. Substitution of concrete with ECC can avoid the cracking and durability problems associated with the brittleness of concrete. In this paper, three short steel reinforced beams with various transverse reinforcement ratios and matrix types were tested under reversed cyclic loading. According to the test results, steel reinforced ECC (R/ECC) beams show better bearing capacity, energy dissipation capacity, and damage tolerance compared with steel reinforced concrete (RC) beams. The difference of load carrying capacity strongly depends on the cracking developing process. The bridging effect of fibers at the fine cracks of ECC beams allows ECC to continue to provide stable shear capacity. The shear behaviors of the RC and R/ECC beams were simulated by finite element method. The simulation results are found to be in good agreement with test results, indicating the accurateness of the finite element model in simulating the shear behaviors of the R/ECC beams. The effects of the shear span ratio, stirrup diameter and stirrup spacing on the shear resistance of R/ECC beams, are hence evaluated. © 2018, Department of Journal of the China Railway Society. All right reserved.
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页码：146 / 153
页数：7
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