A STRUCTURAL CALCULATION FOR BEAM DEFLECTIONS OF REINFORCED CONCRETE WITH BOND-SLIP

摘要：

The bond-slip between steel bars and concrete in reinforced concrete beams maycause cracking development in the tensile zone of the cross-section,which may result inincreasing deflection with reduction of beams stiffness. Besides the finite element method,there is no analytical formula to calculate the deflections with bond-slip in the availableliteratures. Based on the equilibrium of force and compatibility conditions of deformationunder elastic material behaviour,an analytical model is established to describe the curvaturechanges with occurrence of bond-slip in the shear-bending region and pure bending region ofa concrete beam,and then the formulas for beam deflections are derived in this paper. Thedeflection prediction by this model is compared with two experimental results,the resultsindicate that the predicted deflections are in good agreement with the experimental values,and the contribution of the bond-slip to overall deformation can be significant.

关键词： beam reinforced concrete bond-slip curvature deflection

作者: Zhang Guoxue Xie Lihui Wu Miaomiao

作者单位: Department of Civil Engineering and Architecture,Foshan University,PR China

会议类型: 国际会议

会议名称: The International Conference on Durability of Concrete Structures(2008年混凝土结构耐久性国际学术会议)

会议地点: 杭州

会议语种:英文

页码: 676-680

在线出版日期: 2008-11-01（万方平台首次上网日期，不代表论文的发表时间）