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Vol. 168, Issue 4, April 2014, pp. 305-310




Numerical Analysis of Forces in Negative Bending Region of Steel-Concrete
Composite Beams

1, 2 Wang Yang, 2 Li Tian

1 School of Civil Engineering, Zhengzhou University, Zhengzhou, Henan 450002, China
2 School of Civil Engineering, Taizhou Vocational & Technical College, Taizhou, Zhejiang 318000, China

Received: 26 January 2014 /Accepted: 7 March 2014 /Published: 30 April 2014

Digital Sensors and Sensor Sysstems


Abstract: Steel-concrete composite frame is a kind of structure consisting of a combination of steel and concrete members. In the connection between beams and columns, if the column section size is too large, connecting problems between steel beams and columns are introduced into these structures. For connecting problems between additional longitudinal reinforcements of the steel- concrete composite beam and concrete columns filled with square steels, through numerical analysis on the connection forms of additional longitudinal reinforcements, this paper explored the influence of different distributions of additional longitudinal reinforcements on forces in negative bending region of steel-concrete composite beams. In this paper, a finite element model of the edge across part of steel- concrete composite frames is established, to examine the elastic and plastic ultimate bearing capacity of the negative bending region. Results indicate that, in the negative bending region of steel-concrete composite beams, there will be adverse conditions of concrete in tension and steel beams in compression, resulting in reduction of the stiffness of the negative bending region of the beams. In this situation, concrete panels are easy to crack, affecting the normal function of the structure.


Keywords: Steel-concrete composite member, Negative bending region, Finite element model, Reinforcements.


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