波纹钢管铅阻尼器耗能性能分析研究  

Energy dissipation performance analysis of lead-filled corrugated steel tube damper

作　　者：周云[1] 吴胜 ZHOU Yun;WU Sheng(Civil Engineering Institute,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]广州大学土木工程学院,广东广州510006

出　　处：《世界地震工程》2020年第4期103-111,共9页World Earthquake Engineering

基　　金：国家重点研发计划重点专项(2007YFC0703608)。

摘　　要：提出一种波纹钢管铅阻尼器,介绍了其构造、工作机理、布置形式及特点,采用ABAQUS软件,建立钢管阻尼器、波纹钢管阻尼器和波纹钢管铅阻尼器有限元模型,对其应力分布,传力路径和滞回性能进行模拟分析。结果表明:波纹钢管铅阻尼器耗能减震机理明确,工作性能和耗能性能稳定,滞回曲线饱满以及耗能能力强,具有良好的变形和延性,极限变形大;波纹钢管铅阻尼器通过在波纹钢管内设置铅芯使初始刚度、承载能力和耗能能力得到大幅度提高,既有效保持了波纹钢管的变形能力,又避免波纹钢管发生局部屈曲,使波纹钢管耗能能力得到充分发挥。波纹钢管铅阻尼器在1mm小位移下就可以进入耗能,而且很快进入稳定耗能状态,等效阻尼比稳定在0.3~0.4之间。A lead-filled corrugated steel tube damper was proposed,and its structural form,working mechanism,layout form and characteristics were introduced.The finite element models of hollow steel tube damper(HSTD),corrugated steel tube damper(CSTD),and lead-filled corrugated steel tube damper(LFCSTD)were established by using ABAQUS software.The stress distribution,transmission path and hysteretic behavior were simulated and analyzed.The results show that LFCSTD has clear energy dissipation mechanism,stable working performance and energy dissipation performance.Its hysteresis curve is full and has strong energy dissipation capacity,good deformation and ductility,and large limit deformation.By setting the lead core in the corrugated steel tube,the initial stiffness,bearing capacity and energy dissipation capacity of the corrugated steel tube are greatly improved,which not only effectively maintains the deformation capacity of the corrugated steel tube,but also avoids the local buckling of the corrugated steel tube,so that the energy dissipation capacity of the corrugated steel tube can be fully exerted.The LFCSTD can enter into the energy dissipation state at a small displacement of 1mm,and it will soon enter into the stable energy dissipation state.The equivalent damping ratio is stable between 0.3 and 0.4.

关 键 词：波纹钢管 阻尼器 铅 耗能能力 

分 类 号：TU398.9[建筑科学—结构工程]