加载频率对铅合金减震器动力特性的影响
|
摘要
铅合金减震器是一种适用于电瓷型电气设备的新型减震器,其动力特性对减震效果有重要影响。根据断路器等电气设备的特点,定制了相应的铅合金减震器。通过铅合金减震器滞回特性试验,研究了加载频率对其动力特性的影响。同时以不同加载频率下得到的骨架曲线作为材料的本构关系,研究了加载频率对单自由度体系弹塑性地震反应的影响。研究表明:在相同输入下,采用不同本构关系的单自由度体系,其相对位移峰值、永久位移及塑性耗能均有较大差异,应重视加载频率对铅合金减震器动力特性的影响。
Lead alloy absorber is a new type of absorber suitable for porcelain electrical equipments. The dynamic behavior of this absorber has great influence on its seismic-reduced effect. The lead alloy absorbers are custom-made according to the characteristics of the circuit-breaker. By hysteretic test of the lead alloy absorber, the effect of loading frequency on dynamic properties of this absorber is studied. Taking the skeleton curve obtained under different loading frequency as the constitutive relationship, the influence of loading frequency on elastic-plastic seismic response of single-degree-of-freedom (SDOF) system is discussed. It is shown that the peak value of the relative displacement, the permanent displacement and the plastic energy dissipation are quite different for the SDOF system using different constitutive relationship under the same input motion. Attention should be paid to the effect of loading frequency on dynamic properties of lead alloy absorber.
Lead alloy absorber is a new type of absorber suitable for porcelain electrical equipments. The dynamic behavior of this absorber has great influence on its seismic-reduced effect. The lead alloy absorbers are custom-made according to the characteristics of the circuit-breaker. By hysteretic test of the lead alloy absorber, the effect of loading frequency on dynamic properties of this absorber is studied. Taking the skeleton curve obtained under different loading frequency as the constitutive relationship, the influence of loading frequency on elastic-plastic seismic response of single-degree-of-freedom (SDOF) system is discussed. It is shown that the peak value of the relative displacement, the permanent displacement and the plastic energy dissipation are quite different for the SDOF system using different constitutive relationship under the same input motion. Attention should be paid to the effect of loading frequency on dynamic properties of lead alloy absorber.
引文
何玉怀,郭伟彬,蔚夺魁,2008.加载频率对直接时效GH4169高温合金疲劳裂纹扩展性能的影响.失效分析与预防,3(1):10—14.
李定乾,张微伟,印江涛,2009.加载频率对粘性土动力特性影响的试验研究.建筑技术开发,36(1):7—9.
李夕兵,王卫华,马春德,2007.不同频率载荷作用下的岩石节理本构模型.岩石力学与工程学报,26(2):247—253.
李亚琦,李小军,刘锡荟,2005.铅合金减震的动力特性及适用范围.地震学报,27(1):86—95.
马吉成,覃英宏,2008.高周加载频率对混凝土损伤的影响.路基工程,136(1):87—88.
史庆轩,杨文星,门进杰,2005.单自由度体系非线性地震能量反应的计算.建筑科学与工程学报,22(2):25—29.
杨文星,罗少锋,2006.单自由度体系地震能量反应的计算.西安科技大学学报,26(1):40—43.
尤红兵,赵凤新,2010.瓷柱式SF6高压断路器抗震性能分析.震灾防御技术,5(4):418—427.
张建明,王稳祥,1990.振动频率对饱和砂土动力特性的影响.岩土工程学报,12(1):89—97.
中国电力规划设计协会,2004.高压电气设备减震技术规定(DL GJ160-2003).北京:中国电力出版社.
Jiang Minmin,Cai Zhengyin,Cao Pei et al.,2010.Effect of Cyclic Loading Frequency on Dynamic Properties of Marine Clay.Soil Dynamics and Earthquake Engineering(GSP201),See:Proceedings of the2010GeoShanghai International Conference,340—346.
李定乾,张微伟,印江涛,2009.加载频率对粘性土动力特性影响的试验研究.建筑技术开发,36(1):7—9.
李夕兵,王卫华,马春德,2007.不同频率载荷作用下的岩石节理本构模型.岩石力学与工程学报,26(2):247—253.
李亚琦,李小军,刘锡荟,2005.铅合金减震的动力特性及适用范围.地震学报,27(1):86—95.
马吉成,覃英宏,2008.高周加载频率对混凝土损伤的影响.路基工程,136(1):87—88.
史庆轩,杨文星,门进杰,2005.单自由度体系非线性地震能量反应的计算.建筑科学与工程学报,22(2):25—29.
杨文星,罗少锋,2006.单自由度体系地震能量反应的计算.西安科技大学学报,26(1):40—43.
尤红兵,赵凤新,2010.瓷柱式SF6高压断路器抗震性能分析.震灾防御技术,5(4):418—427.
张建明,王稳祥,1990.振动频率对饱和砂土动力特性的影响.岩土工程学报,12(1):89—97.
中国电力规划设计协会,2004.高压电气设备减震技术规定(DL GJ160-2003).北京:中国电力出版社.
Jiang Minmin,Cai Zhengyin,Cao Pei et al.,2010.Effect of Cyclic Loading Frequency on Dynamic Properties of Marine Clay.Soil Dynamics and Earthquake Engineering(GSP201),See:Proceedings of the2010GeoShanghai International Conference,340—346.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心