Advanced Steel Construction

Vol. 15, No. 1, pp. 30-36 (2019)


DEVELOPMENTS AND BEHAVIORS OF SLIP-RELEASED NOVEL

CONNECTORS IN STEEL-CONCRETE COMPOSITE STRUCTURES

 

Yang Ding1, 2, Xiao-Meng Dai1 and Jia-Bao Yan1, 2 *

1 School of civil engineering, Tianjin University, Tianjin 300072, China

2 Key Laboratory of Coast Civil Structure Safety of Ministry of Education, Tianjin University, Tianjin 300072, China

*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

Received: 12 June 2017; Revised: 28 October 2017; Accepted: 17 December 2017

  

DOI:10.18057/IJASC.2019.15.1.5

 

ABSTRACT:

Effective connection between steel beam and concrete slab is the key issue for steel -concrete composite structures. The slip-released connectors were developed to overcome cracking of the concrete in the hogging moment region of a continuous beam. A full-scale push-out test with two specimens was conducted to investigate the slipping behaviors of the connectors. Test results offered useful information on the slipping behaviors of the connectors in terms of load-slip behaviors and failure modes. FE models were developed for the slip-released connectors and the accuracy of the FE simulation was checked by the reported test results. Two concepts of the connectors, i.e., an improved version with foamed plastic blocks covered by protecting shell and the sliding connectors were developed to improve the structural performances of the slip-released connectors. Numerical simulations results showed that both concepts could effectively release the shear force within their slipping allowed limit and could achieve the performance requirement of releasing slip.

 

Keywords:

Composite structures, Slip-released connectors, Push-out test, Finite element analysis, Shear resistance

 

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