INVESTIGATION ON THE SEISMIC REHABILITATION OF REINFORCED CONCRETE BEAM-COLUMN JOINTS
Joint shear failure is identified as the principle cause of total collapse of many structures during recently earthquake disasters. Effective and economical rehabilitation techniques for the upgrade of the deficient beam-column joint shear-resistance capacity in existing structures are needed. Usually the joints are strengthened by the use of jackets or wrapped with rehabilitating materials, but these techniques neglect the existing transverse beams. Furthermore, bond-slip of beam bars in the joints, having not received much attention, would result in confinement losing of beams to the joint and lead to increase of shear deformation. The objective of this research is to develop effective rehabilitation schemes for the joints using steel angles, whose stiffness and strength can make plastic hinge relocate to increase anchorage length, upgrade the confinement function of the beams to improve shear strength of the joint and guarantee cooperation between the beams and columns to enhance overall ductile behavior.
Beam-column joint rehabilitation reinforced concrete bond-slip steel angle ductile behav-ior
G. D. Zhao S. Y. Cao Y. F. Zhang
College of Civil Engineering, Southeast University, Nanjing, China Department of Civil Engineering, Shandong Jiaotong University, Jinan, China
国际会议
上海
英文
955-959
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）