摘要
完成了4个梁、柱均为T形截面的钢筋混凝土异形柱框架中间层端节点足尺组合体试件的低周交变加载试验。精确量测了不同受力阶段进入节点区上、下梁筋的应变分布状态、节点区腹板箍筋沿受力方向箍肢的应变量以及反复加载下梁筋由节点区的滑出量;分析了节点区的破坏形态和节点翼缘对节点区的抗剪作用,以及这类节点的综合抗震性能;检验了按我国《混凝土异形柱结构技术规程》(征求意见稿)设计的该类节点在梁端先屈服条件下的抗震受剪承载力。
Cyclic loading tests of 4 interior reinforced concrete beam-column joints,of which the sections of beam and column are T-shaped, are carried out. Strains of the beam rebars passing through the joints core, strains of the stirrup leg along the loading direction, and slippage of the beam rebars from the joints under cyclic loading are carefully measured, Failure modes of the joint core are identified and the effect of the flange on shear capacity of the joint are clearifled, Seismic behavior of such joints is analyzed as a result. On this basis, the provisions in the national Technical specifications of RC structure with columns of irregular shaped sections （draft） about seismic shear capacity of such joints yielded at beam ends are verified.
出处
《建筑结构》
CSCD
北大核心
2005年第9期66-72,共7页
Building Structure
