# [1]乔治,潘钻峰,梁坚凝,等.基于MCFT的钢筋增强ECC梁受剪承载力计算方法[J].东南大学学报(自然科学版),2018,48(6):1021-1027.[doi:10.3969/j.issn.1001-0505.2018.06.006] 　Qiao Zhi,Pan Zuanfeng,Leung C K Y,et al.Calculation method for shear strength of reinforced ECC beams using modified compression field theory[J].Journal of Southeast University (Natural Science Edition),2018,48(6):1021-1027.[doi:10.3969/j.issn.1001-0505.2018.06.006] 点击复制 基于MCFT的钢筋增强ECC梁受剪承载力计算方法() 分享到： var jiathis_config = { data_track_clickback: true };

48

2018年第6期

1021-1027

2018-11-20

## 文章信息/Info

Title:
Calculation method for shear strength of reinforced ECC beams using modified compression field theory

1东南大学土木工程学院, 南京 210096; 2同济大学土木工程学院, 上海 200092; 3香港科技大学土木与环境工程系, 香港
Author(s):
1School of Civil Engineering, Southeast University, Nanjing 210096, China
2College of Civil Engineering, Tongji University, Shanghai 200092, China
3School of Civil Engineering, Hong Kong University of Science and Technology, Hong Kong, China

Keywords:

TU375.1
DOI:
10.3969/j.issn.1001-0505.2018.06.006

Abstract:
Based on the modified compression field theory(MCFT)and the characteristics of engineered cementitious composites(ECC), a modified MCFT method for calculating the shear capacity of RECC beams is established. In this method, cracked ECC was regarded as new continuous material, and averaged principal stress-strain relationships and local stress conditions at crack locations for ECC were modified, considering the stress-strain relationship under biaxial stress state and the fiber bridging action on the crack plane. A database was established for the shear tests of 40 RECC beams and 6 RECC slabs, and then the modified MCFT method for the shear capacity of RECC beam were evaluated. Results indicate that the modified MCFT method is of high accuracy.Through reasonable simplification, the expression for the inclination of ECC strut and the principle tensile strain was explicitly derived, and a simplified calculation method without iterative calculations for the shear strength of RECC beam with stirrups was further proposed. The simplified method was then evaluated by the database. Results show that the mean value and coefficient of variation of the ratio of test strength to predicted strength are 1.05 and 0.197, respectively, indicating that the calculation accuracy of the simplified method is good.

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