人工消能塑性铰构造低周往复试验研究  

Experimental research on artificial dissipative plastic hinge construction under low-reversed loading

作　　者：马哲昊 张纪刚[1,2] 梁海志 李芦钰[3] MA Zhehao;ZHANG Jigang;LIANG Haizhi;LI Luyu(College of Civil Engineering,Qingdao University of Technology,Qingdao 266033,Shandong,P.R.China;Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone,Qingdao University of Technology,Qingdao 266033,Shandong,P.R.China;College of Civil Engineering,Dalian University of Technology,Dalian 116024,Liaoning,P.R.China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]青岛理工大学蓝色经济区工程建设与安全协同创新中心,山东青岛266033 [3]大连理工大学土木工程学院,辽宁大连116024

出　　处：《土木与环境工程学报（中英文）》2021年第3期59-66,共8页Journal of Civil and Environmental Engineering

基　　金：国家重点研发计划(2017YFC0703600);山东省重点研发计划(2018GSF117029)。

摘　　要：为提高装配式钢筋混凝土框架结构的抗震性能,针对震后梁、柱构件损伤严重等问题,提出了一种新型框架梁端构造——人工消能塑性铰,即在框架梁端通过预埋机械铰实现梁、柱构件铰接,同时安装附加钢板承载并耗能。设计制作了8组不同截面形式和构造的附加钢板试件,并对装有不同附加钢板的人工消能塑性铰构造进行低周往复荷载试验,研究该构造的破坏模式,并通过滞回曲线、骨架曲线、等效粘滞阻尼系数、延性等研究其抗震性能。结果表明:塑性损伤可控制在附加钢板中间开缝段,有效利用钢板弯曲变形实现耗能,使该构造具有损伤可控和损伤构件可更换,其中,卷边槽型附加钢板可防止耗能段钢板过早屈曲并提高耗能能力。To enhance the seismic performance of precast-reinforced concrete frame structure,and aim at the severe damage of beam and column members after earthquake,an innovative construction at beam end called artificial dissipative plastic hinge(ADPH)is proposed.ADPHs are constructions that connect precast beam and column though an embedded mechanical hinge,and additional steel plates are installed to carry the load and dissipate energy.Eight groups of additional steel plate specimens with different sections and structures were designed and fabricated.The low-reversed loading tests are carried out on the artificial dissipative plastic hinge structures with different additional steel plates,the failure modes are analysed,and the seismic performance of ADPH are studied through the hysteresis curves,skeleton curves,equivalent viscous damping coefficient and ductility.The results show that the plastic damage will concentrate only on middle part of steel plates,and prove the effectiveness of energy dissipation by bending,ADPH construction possesses the features of damage-control and rapid-replacing,and the U-shape steel plates could enhance the capacity of buckling-delayed and energy-dissipating.

关 键 词：人工塑性铰 框架结构 拟静力试验 附加钢板 滞回曲线 

分 类 号：TU375.4[建筑科学—结构工程]