新型钢筋混凝土柱—蜂窝钢梁节点抗震性能

【作者】 张晓翕； 贾连光； 耿凯； 李秋镕；

【机构】 沈阳建筑大学土木工程学院；

【摘要】 提出了一种新型钢筋混凝土柱-蜂窝钢梁(RCS)节点构造形式,并对该新型节点构造的抗震性能进行分析。利用有限元软件,对6个不同轴压比试件进行低周往复加载,研究轴压比对试件的承载力、滞回性能、延性、刚度退化及耗能能力等抗震性能参数的影响规律。研究结果表明:核心区内隔板连接件可以有效地传递弯矩,而钢梁腹板开孔较好的实现了塑性铰外移,节点抗震性能优越。节点抗震性能受轴压比影响较大,随着轴压比提高,试件的滞回曲线更加饱满,耗能能力变强,但延性和承载能力降低,承载力衰减速率加快。更多还原

【Abstract】 The structure form of honeycomb composite(RCS) joints of new reinforced concrete columns is proposed.The seismic performance of the new type of joint structure is analyzed.The six non coaxial pressure comparison components are loaded in low cycle and round-trip by using the finite element software.The pressure ratio of the shaft is studied The influence of seismic parameters such as bearing capacity,lag performance,soft property,strength degradation and energy consumption capacity of the test parts is studied.The results show that the isolated connection parts in the core area can effectively transfer the curve,the steel beam and the breastplate The hole can realize the external movement of plastic hinge well,and the seismic performance of the joint is excellent,and the seismic resistance of the joint is greatly affected by the ratio of axial pressure.With the increase of the pressure ratio of the shaft,the lag curve of the test parts is more abundant and the energy consumption capacity is stronger,but the soft and bearing capacity are reduced and the load capacity is reduced faster.更多还原