型钢超高强混凝土柱抗震性能试验研究  

Experimental research on seismic performance of ultra-high strength concrete column with section steel

作　　者：马英超 毛鸿飞[2,3] 韩龙 吴光林[1,2] 贾金青 MA Yingchao;MAO Hongfei;HAN Long;WU Guanglin;JIA Jinqing(College of Ocean Engineering and Energy,Guangdong Ocean University,Zhanjiang 524088,China;Guangdong Provincial Key Laboratory of Intelligent Equipment for South China Sea Marine Ranching,Guangdong Ocean University,Zhanjiang 524088,China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]广东海洋大学海洋工程与能源学院,广东湛江524088 [2]广东海洋大学广东省南海海洋牧场智能装备重点实验室,广东湛江524088 [3]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024

出　　处：《大连理工大学学报》2024年第6期641-648,共8页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(52001071);广东省基础与应用基础研究基金资助项目(2023A1515010890,2022A1515240039);湛江市非资助科技攻关专题(240328154545092);科研启动项目(060302072404).

摘　　要：柱体是框架结构中主要的抗震耗能结构,基于试验系统讨论了不同剪跨比和含钢率三榀单层单跨型钢超高强混凝土柱抗震性能,试验研究内容包括滞回曲线、骨架曲线、位移延性系数、割线刚度退化和耗能能力.研究结果表明,剪跨比越小,初始割线刚度越大,但当结构出现破坏后,割线刚度退化加速.在相同剪跨比下,柱体含钢率提高近100%,其耗能能力提高近20%.Columns are the main seismic energy dissipation structures in the frame structures.The seismic performance of three single-story single-span ultra-high strength concrete columns with section steel under different shear span ratios and steel ratios is discussed based on the experimental system.The experimental research contents include hysteretic curves,skeleton curves,displacement ductility coefficient,secant stiffness degradation and energy dissipation capacity.The research results show that the smaller the shear span ratio is,the greater the initial secant stiffness is,but when the structure fails,the secant stiffness degradation becomes more rapid.Under the same shear span ratio,the steel ratio of the column increases by nearly 100%,its energy dissipation capacity increases by nearly 20%.

关 键 词：框架结构 剪跨比 含钢率 破坏机制 

分 类 号：TU398.2[建筑科学—结构工程]