论文部分内容阅读
在各种加固钢筋混凝土柱的方法中,外包钢被广泛运用在正方形和矩形截面柱中。目前,对外包钢的研究较少,并且大多数是关于轴压柱的研究,没有考虑弯矩作用的影响。给出一系列外包钢加固全尺寸模型的试验数据,对在轴力和弯矩共同作用下梁-柱节点进行模拟。所有试件都采用柱头形式,将外包钢与梁-柱节点用机械锚固或钢杆件连接,以便帮助节点传力。通过试验可知,外包钢能提高钢筋混凝土柱的极限承载力和延性。采用钢杆件连接形式的试件的延性和承载力比采用机械锚固的要高。将试验结果和3种设计建议方法进行比较,并分析彼此间的共同点。
Among the various methods of reinforcing reinforced concrete columns, outsourced steels are widely used in square and rectangular section columns. At present, there are few researches on outsourced steel, and most of them are about the research of axial compression columns and do not consider the influence of bending moment. A series of experimental data of a full scale model of outsourcing steel reinforcement are given, and the beam-column joints are simulated under the joint action of axial force and bending moment. All specimens are in the form of stigma, the outer steel and beam - column joints with mechanical anchors or steel members connected to help node force. The experiment shows that the outsourcing steel can improve the ultimate bearing capacity and ductility of reinforced concrete columns. The ductility and bearing capacity of specimens with steel bar connection are higher than those with mechanical anchorage. The test results and three kinds of design recommendations are compared, and analyze each other’s common ground.