Estimation of shear strength of RC interior beam-column connections based on the strut model

被引：0

作者：

Muhsen, Bashir Ahmad ^{[1
]}

Umemura, Hisashi ^{[1
]}

机构：

[1] Graduate School of Engineering, Nagoya Institute of Technology

来源：

Journal of Structural and Construction Engineering | 2012年 / 77卷 / 676期

关键词：

Beam flexural theory; Finite element analysis; Joint shear failure; RC beam-column connection;

D O I：

10.3130/aijs.77.947

中图分类号：

学科分类号：

摘要：

This paper presents a new theoretical macro model developed for estimation of joint shear strength of RC interior beam column connections. In the model, a compressive strut is considered as failing in bending mode. Hence, the stress block concept based on the beam bending theory may be used to estimate the strut strength. The depth of compressive strut is calculated from the neutral axes in the beams and columns, which are derived from the bending theory considering axial forces in the connected members and the effect of transverse reinforcement bars in the joint panel. Finite element analyses were carried out in order to observe the behavior of the compressive struts. Analysis results showed that the process of the formation and disappearance of the strut is consistent with the adoption of the bending theory in the strut model. The joint shear strengths of specimens in a database collected from past RC beam-column joint experimental studies were calculated by the developed model and compared to the published experimental values. The results show that the model provides a theoretical explanation of joint behavior as well as a much more improved estimation than the methods currently recommended in both the ACT or AIJ codes.

引用

页码：947 / 955

页数：8

共 29 条

[1]

ACT 318-05 Building Code Requirements for Structural Concrete and Commentary, (2005)

[2]

ATJ Standard for Structural Calculation of Reinforced Concrete Structures (In Japanese), (2010)

[3]

Code of Practice for the Design of Concrete Structures, (1982)

[4]

Kurose Y., Unidirectional and bidirectional loading tests on reinforced concrete beam-column joints, Journal of Structural and Construction ,(Tn Japanese), ATJ, 448, pp. 89-99, (1993)

[5]

Tshikubo T., Et al., Study on the ultimate shear strength of reinforced concrete tnterior beam-column joint, partl the tnvestigation of the joint strut compressive stress(Tn Japanese), Summaries of the Technical Paper of Annual Meeting of Architectural Tnstitute of Japan, pp. 205-206, (1992)

[6]

Shiohara H., New model for shear failure of rc tnterior beam column connections, Journal of Structural Engineering, ASCE, 127, 2, pp. 152-160, (2001)

[7]

Shiohara H., Kusuhara F., Restoring characteristics and damages of R/C beam column joints under multi axial combined conditions(Tn Japanese), JCT Journal, 29, 3, pp. 235-240, (2007)

[8]

Shiohara H., Reinforced concrete beam-column joint. tnteraction of ultimate strengths and forces at member ends, Journal of Strucural Engineering. Transactions of ATJ, 74, 635, pp. 121-128, (2009)

[9]

Muhsen B.A., Umemura H., Estimation of shear strength of rc tn-tenor beam column connections based on the strut model, Journal of Structural Engineering (JSE), 57 B, 2, pp. 565-572, (2011)

[10]

Au E.T.K., Huang K., Pam H.J., Diagonally-reinforced beam-column joints reinforced under cyclic loading, Proceedings of the Tnstitution of Civil Engineers Structures and Buildings Va]., 158, pp. 21-40, (2005)

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