摘要
目的探讨不同肢长对钢筋混凝土异型柱的承载力、刚度及延性的影响.方法用拟静力试验方法对不同肢长异型柱进行抗震性能研究.结果试验得出异型柱的最大承载力、抗侧移刚度及延性等相关数据.结论轴压比较大时,其承载力、侧移刚度较大,但延性较差;随着柱子肢长的增加,其承载力、侧移刚度随之提高,这对结构设计有一定的好处,但肢长应控制在一定的范围内,避免形成短柱;试验中由于腹板的受压区混凝土面积较小,因此该压区混凝土破坏严重,纵筋也成屈曲状态,建议提高混凝土等级,以增加该区混凝土的抗压能力.
In this paper,by means of experimental study on 4 pieces of T-shaped and 2 pieces of crisscross-shaped reinforced concrete columns under cyclic loading,the strength,stiffness and ductility of special-shaped column in different axial pressure ratio are analyzed.The function of different flange on raising seismic capacity of special-shaped column is discussed.The restoring force model is also considered.These provide the basis for seismic design of special-shaped columns.When the axial pressure ratio gets more,its endurance and stiffness also go up,but its ductility is weak; when the pillar's flange gets longer,its endurance and stiffness increase,which makes the structure designing easier but the flange should be well arranged to avoid turning into short pillar.The area of concrete in the flange is smaller,so it is severely damaged and the bars are in the situation of badly bending.So it is recommended to better the quality degree of concrete to increase its endurance against pressure.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
2005年第2期103-106,共4页
Journal of Shenyang Jianzhu University：Natural Science
基金
辽宁省建设厅科技项目(20202261)
