黏滞耗能减震结构能量反应分析的基础研究
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摘要
地震对结构的作用是一种能量的传递、转化与消耗过程,而减轻或控制地震反应的基本原则主要是以适当的方式耗散地震输入的能量,因此能量的输入、转化和吸收(耗散)成为地震反应的基本特征。本文采用速度型黏滞阻尼器,利用有限元分析程序,综合考虑地震动三要素(峰值、频谱、持时)、结构自身动力特性(阻尼比、自振周期)和黏滞阻尼器参数(速度指数、阻尼系数)等因素,对钢筋混凝土耗能减震结构进行了地震动总输入能受各种因素影响的变化规律的弹塑性时程分析;探讨了黏滞阻尼器速度指数的取值范围,取得了一些有意义的研究结果,为减震结构地震反应的能量分析方法走向实用化提供了基础性资料。
The action of earthquake on structure is a process to deliver,convert and consume the energy.The basic principle to ease or control the earthquake reaction is consuming the energy in appropriate way,so the importation,conversion and absorption(consume to spread) of the energy become the basic characteristic of the structural seismic response.The energy analysis method is applied to a reinforced concrete structure with viscous damping device by finite element,considering the seismic motion parameters(i.e.amplitudes,frequency spectrum and lasting time),structural dynamic parameters(i.e.damping ratio and periods of free vibration) and fluid viscous damper parameters(i.e.speed index number and damping coefficient).The varied laws of elastic-plastic structural seismic total input energy in viscous damping energy are investigated.The index scope selection and application for viscous damping is discussed.The fundamental data is obtained for energy response analysis of viscous damping structure with energy dissipaters.
The action of earthquake on structure is a process to deliver,convert and consume the energy.The basic principle to ease or control the earthquake reaction is consuming the energy in appropriate way,so the importation,conversion and absorption(consume to spread) of the energy become the basic characteristic of the structural seismic response.The energy analysis method is applied to a reinforced concrete structure with viscous damping device by finite element,considering the seismic motion parameters(i.e.amplitudes,frequency spectrum and lasting time),structural dynamic parameters(i.e.damping ratio and periods of free vibration) and fluid viscous damper parameters(i.e.speed index number and damping coefficient).The varied laws of elastic-plastic structural seismic total input energy in viscous damping energy are investigated.The index scope selection and application for viscous damping is discussed.The fundamental data is obtained for energy response analysis of viscous damping structure with energy dissipaters.
引文
[1]Housner G W.Limit design of structures to resist earthquake[C]∥Proc.of IWCEE.Berkeley,CA,1956:5.1-5.11.
[2]白绍良,黄宗明,肖明葵.结构抗震设计的能量分析方法研究述评[J].建筑结构,1997,27(4):18-22.
[3]熊仲明,史庆轩,李菊芳.框架结构基于能量地震反应分析及设计方法的理论研究[J].世界地震工程,2005,21(2):141-146.
[4]Shao Di-hong,Miyamoto H K.Viscous damper versus frictiondamper for retrofit of a non-ductile reinforced concrete buildingwith unreinforced masonry infills[C]∥Proceedings of 68thConvention Structural Engineers Association of California.Sacramento,California,1999:1-15.
[5]熊仲明,史庆轩.钢筋混凝土框架结构倒塌破坏能量分析的研究[J].振动与冲击,2003,22(4):8-11.
[6]熊仲明,史庆轩,王社良等.钢筋混凝土框架——剪力墙模型结构试验的滞回反应和耗能分析[J].建筑结构学报,2006,27(4):89-95.
[2]白绍良,黄宗明,肖明葵.结构抗震设计的能量分析方法研究述评[J].建筑结构,1997,27(4):18-22.
[3]熊仲明,史庆轩,李菊芳.框架结构基于能量地震反应分析及设计方法的理论研究[J].世界地震工程,2005,21(2):141-146.
[4]Shao Di-hong,Miyamoto H K.Viscous damper versus frictiondamper for retrofit of a non-ductile reinforced concrete buildingwith unreinforced masonry infills[C]∥Proceedings of 68thConvention Structural Engineers Association of California.Sacramento,California,1999:1-15.
[5]熊仲明,史庆轩.钢筋混凝土框架结构倒塌破坏能量分析的研究[J].振动与冲击,2003,22(4):8-11.
[6]熊仲明,史庆轩,王社良等.钢筋混凝土框架——剪力墙模型结构试验的滞回反应和耗能分析[J].建筑结构学报,2006,27(4):89-95.
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