# [1]王景全,刘桐旭,王震.考虑弯距影响的混凝土键齿接缝抗剪承载力计算方法[J].东南大学学报(自然科学版),2017,47(3):553-558.[doi:10.3969/j.issn.1001-0505.2017.03.023] 　Wang Jingquan,Liu Tongxu,Wang Zhen.Calculation method for shear strength of concrete keyed joints considering bending effects[J].Journal of Southeast University (Natural Science Edition),2017,47(3):553-558.[doi:10.3969/j.issn.1001-0505.2017.03.023] 点击复制 考虑弯距影响的混凝土键齿接缝抗剪承载力计算方法() 分享到： var jiathis_config = { data_track_clickback: true };

47

2017年第3期

553-558

2017-05-20

## 文章信息/Info

Title:
Calculation method for shear strength of concrete keyed joints considering bending effects

1东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096; 2东南大学国家预应力工程技术研究中心, 南京 210096
Author(s):
1Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China
2National Prestress Engineering Research Center, Southeast University, Nanjing 210096, China

Keywords:

TU398.6
DOI:
10.3969/j.issn.1001-0505.2017.03.023

Abstract:
To establish the calculation formula for the shear strength of concrete keyed joints reflecting the multiple-keyed reduction effects, the shear stress distribution of the key joints was calculated based on the calculation theory of Mohr’s stress circle by considering the effects of bending on the normal stress distribution in the shear plane. With the assumption that the part whose normal stress was tensile without providing the capacity, a calculation method for the shear capacity of the concrete keyed joints considering the bending effect was proposed and verified by the existing tests. The results show that the existing calculation formula underestimates the shear strength of the single-keyed joints in different degrees. The AASHTO(American Association of State Highway and Transportation Officials)formula can predict the shear capacity of the single-keyed joints but obviously overestimates that of the dry multiple-keyed joints. Compared with the AASHTO formula, the proposed formula provides conservative values for the dry single-keyed joints and the average ratio of the calculated results to the experimental results is 0.84. As for the dry multiple-keyed joints, the calculated results are in better agreement with the experimental results and the average ratio is 0.95. As for the epoxy-keyed joints, the calculation results of the proposed formula are similar with those of the AASHTO formula. The proposed method can consider the effects of different layouts and depths of the keyed joints on the capacity, and partially explain the reduction effect of the dry multiple-keyed joints. It is suitable for calculating the shear capacity of the concrete keyed joints.

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