钢骨高强混凝土框架边节点试验研究

Study of Test of Frame Side Joint in Steel Reinforced High Strength Concrete

为了确定钢骨高强混凝土框架边节点的抗剪承载力,根据试验确定了影响钢骨高强混凝土框架边节点抗剪承载力的主要因素,介绍了节点试验的加载和测量方法,明确了影响节点承载力的主要因素为含钢率、轴压比和配箍率.分析得出节点的破坏可以分为弹性阶段、带裂缝工作阶段和破坏阶段.试验表明轴压比和含钢率越大,节点的开裂荷载越大;轴压比、配箍率和含钢率越大节点的屈服荷载、极限荷载越大.

To make sure the steel reinforced high strength concrete frame side joint shear capacity,the principally factor of affecting steel reinforced high strength concrete frame side joint shear capacity has been confirmed by tests.The material mechanics capability and joints,and the loading and amount in the test have been introduced to clarify the principal factor affecting joint shear capacity are rate of steel,axial compression ratio and rate of core stirrup.That the forced course can been demarcated by elasticity stage,crack stage and destroy stage have been recounted.As a result,the crack load will be large with increase of the axial compression ratio and the rate of steel; the yielded load and the limited load will be large with decrease of the axial compression ratio,the rate of steel and rate of core stirrup,but ductility will decrease; the damage will decrease with the increase of rate of steel,but ductility will be better.