Composite Steel- concrete Frame Beam with Reinforced Negative Bending Regions
DU Xin - xi, LUO Shun - xin, CHENG Xiao - yan, SHI Hao
DOI:10.11835/j.issn.1674-4764.2006.04.014
Received December 28, 2005,Revised December 28, 2005, Accepted , Available online July 01, 2015
Volume ,2006,Pages 56-
- Abstract
Considering the large negative bending moment at the end of frame beam and low tensile strength of concrete,a new composite steel-concrete frame beam(CSCFB),reinforced by a T shape steel beam at the negative bending regions,was brought forward.Through two full-scale of single-layer CSCFB frame models experiment,the load-displacement curves of CSCFB and strain distribution at cross section were obtained.Compared with the ordinary composite beam,the T shape reinforcing section can enhance the beam stiffness effectively,and make it distribute reasonably.The segment flexural rigidity method is presented and validated.