Advanced Steel Construction

Vol. 7, No. 1, pp. 48-63 (2011)


EXPERIMENTAL STUDY ON BEHAVIORS OF THE TRAPEZOID CONNECTORS OF THE INVERTED T-SHAPED STEEL WITH NOTCHED WEB FOR A NOVEL COMPOSITE BEAM

 

Li Guo-qiang 1, 2,*, Li Liang 2 and Li Xianhui 2

1 State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092,

People’s Republic of China

2 College of Civil Engineering, Tongji University, Shanghai 200092, People’s Republic of China

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

 

DOI:10.18057/IJASC.2011.7.1.4

 

ABSTRACT:

An innovative steel-concrete composite beam with embedding the notched web of the inverted T-shaped steel into the concrete slab is introduced in this paper. The behaviors of the trapezoid connectors of the notched web of the inverted T-shaped steel for the composite beam are experimentally investigated. Firstly, the shear behavior of the connectors is investigated through the tests on ten push-out specimens, and a formula on the base of the test results is proposed to estimate the ultimate shear capacity of the trapezoid connectors. Then the pull-out behavior is studied through tests on six specimens, and the comparisons between pull-out and shear capacities are conducted. Next, the local compressive behavior is studied through tests on four local compressive specimens, and an equation on local compressive capacity of the connectors is proposed on the base of the test results. Finally, testes are conducted on eight specimens to investigate the punch behavior of the connectors, and a formula on punch capacity of the connectors is recommended. According to the experimental results, the trapezoid connectors may promise the reliability of the connection between the concrete slab and the inverted T-shaped steel beam, and the formulas proposed can be practically used to estimate the shear, local compressive and punch capacities of the trapezoid connectors for the novel composite beam.

 

Keywords:Steel-concrete composite beam; T-shaped steel; push-out specimens; trapezoid connectors

 

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