【摘要】 针对低-中震害区构件有限延性的要求,提出了2种新型钢筋混凝土梁柱节点的构造形式:在节点区加配斜钢筋,或梁主钢筋在节点区弯起.它们既可满足有限延性的要求,又可避免节点区钢筋密集.通过对4个高强混凝土梁柱节点在低周反复荷载作用的试验表明:2种新型节点均可提高节点延性,将节点的位移延性系数分别从3提高到3.5和4.4;在节点区加配斜钢筋的试件可提高强度15%.因此,对于有限延性要求的节点,是最佳的节点构造形式.更多还原

【Abstract】 Two kinds of new joint details,i.e.by adding diagonal reinforcement in the joint and bending the beam longitudinal reinforcement in the joint,are proposed for regions with low and moderate seismic risk.In this paper,four high-strength concrete(HSC) specimens are investigated.The new joint details could satisfy the requirements of limited ductility and avoid reinforcement congestion in the joint.According to the experimental results,the displacement ductility factor is enhanced from 3 to 3.5 and 4.4 respectively;the strength of the unit with additional diagonal reinforcement is improved 15%.Therefore,the joint detail with additional diagonal reinforcement is the best for the requirement of limited ductility.更多还原