Calculation method for the shear bearing capacity of diaphragm-through connections. Issue 6 (June 2017)

• Record Type: Journal Article
• Authors: Wu, Liao; Chen, Zhihua; Rong, Bin
• Is Part Of: Advances in structural engineering. Volume 20:Issue 6(2017)
• Page Start: 906
• Page End: 916
• Publication Date: 2017-06
• Subjects: calculation method -- concrete-filled square steel tubular column -- diaphragm-through connection -- experimental investigation -- panel zone -- shear capacity; Structural engineering -- Periodicals; Construction, Technique de la; Structural engineering; Periodicals; 624.1
• DOI: 10.1177/1369433216666444
• Languages: English
• ISSNs: 1369-4332

Abstract

This article presents the results of experimental, numerical, and theoretical studies into the shear behavior of panel zone of diaphragm-through connections between concrete-filled square steel tubular columns and steel beams. The current design code does not cover the yield and ultimate shear strengths of such connections in China. Five tee-shaped diaphragm-through connections were fabricated and tested that they comply with the principle of "strong members and weak panel zone." Three-dimensional nonlinear finite element models were developed to study the shear behavior of the panel zone under low-frequency cyclic loading. Based on the test results, the force transfer mechanism and the effect of different factors on the panel zone shear capacity were analyzed. The width and deformation of compression strut of core concrete were taken into account. A simple manual calculation method was also proposed for evaluating the shear strength of panel zone of diaphragm-through connections. Good agreement was found between theoretical and test results for both yield and ultimate shear strengths for connections.