摘要
进行了5个低周期反复荷载下钢骨高强混凝土柱与钢筋高强混凝土梁边节点试验,分析了其破坏模式与受力性能,明确该类节点的滞回曲线特征,得到其延性系数和等效粘滞阻尼比系数,该类节点延性系数、等效阻尼比系数比钢筋高强混凝土节点大,与钢骨普通混凝土节点比较接近。通过试验,分析了钢骨、高强混凝土及箍筋等对节点的抗剪承载力的影响,建立了该类节点的抗剪承载力计算公式,理论计算结果与试验结果吻合良好。
Five joints of steel-reinforced high strength concrete column and reinforced high strength concrete beam under reversed cyclic loading were tested. The mechanical behavior such as failure state, hysteretic behavior, displacement ductile coefficient and equivalent hysteretic damping coefficient of the joints are discussed. It is found that the displacement ductile coefficient and equivalent hysteretic damping coefficient of the joints are higher than those of reinforced high strength concrete joint and close to those of steel reinforced concrete joint. The effects of high strength concrete, steel ratio, stirrup ratio and joint core area on shear bearing capacity of the joints are analyzed in detail. Calculating formula of shear bearing capacity of the joints is established. A good agreement is reached between the calculations and the experimental results.
出处
《工程力学》
EI
CSCD
北大核心
2005年第1期182-186,共5页
Engineering Mechanics
基金
辽宁省自然科学基金(2001101012)
建设部科技攻关项目(2002-2-11)
关键词
钢骨高强混凝土
节点核心区
破坏模式
延性与耗能能力
抗剪承载力
Bearing capacity
Concrete beams and girders
Concrete testing
Cyclic loads
Earthquake resistance
Failure (mechanical)
Joints (structural components)
Steel
