新型U形软钢板阻尼器在网架结构中的减震控制研究
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摘要
振动控制是结构抗震防灾的一种积极有效手段,目前对于大跨空间结构的振动控制技术不是很成熟,利用软钢板(Mild Steel)在反复循环荷载作用下具有稳定的滞回特性,设计了U形软钢板阻尼器,通过试验得出该阻尼器的滞回曲线,建立了该阻尼器分析模型。最后,将该阻尼器应用于平板网架结构,探讨了该阻尼器在空间结构中的减震控制理论和方法。通过地震反应时程分析,分析了其减震效果,对有控和无控状态下的节点位移和杆件内力进行对比分析。结果表明,该新型阻尼器可有效的减少网架结构的地震响应。
Vibration control is an effective way of earthquake mitigation and disaster prevention for engineering structures.At present,vibration control techniques for long-span spatial structures have not been well formed and therefore need to be investigated and developed.In this paper,using mild steel plate have stable hysteresis under loading and unloading repeated cycles,designed a U shape mild steel plate damper,an hysteresis loop and analytical model was carried out by experimental test At last,this damper is applied to space truss structure to investigate its vibration control performance. The control effectiveness under earthquake excitation is analyzed.A comparison is made for nodal displacements and internal forces of members between control and without control.It is shown that the new type of mild steel plate damper is very effective to mitigate earthquake response of space truss structures.
Vibration control is an effective way of earthquake mitigation and disaster prevention for engineering structures.At present,vibration control techniques for long-span spatial structures have not been well formed and therefore need to be investigated and developed.In this paper,using mild steel plate have stable hysteresis under loading and unloading repeated cycles,designed a U shape mild steel plate damper,an hysteresis loop and analytical model was carried out by experimental test At last,this damper is applied to space truss structure to investigate its vibration control performance. The control effectiveness under earthquake excitation is analyzed.A comparison is made for nodal displacements and internal forces of members between control and without control.It is shown that the new type of mild steel plate damper is very effective to mitigate earthquake response of space truss structures.
引文
[1]薛素铎，周乾．SMA-橡胶复合支座在空间网壳结构中的隔震研究[J]．北京工业大学学报，2004，30(2)：176-179．
[2]薛素铎，董军辉，卞晓芳，李彬双．一种新型形状记忆合金阻尼器[J]．建筑结构学报，2005，26(3)：45-50．
[3]李钢，李宏男．新型软钢阻尼器的减震性能研究[J]．振动与冲击，2006，25(3)：66-72．
[4]Kelly J M,Skinner R I,Heine AJ.Mechanisms of energy absorption in special devices foruse in earthquake resistant Structures[J].Bull.N.Z.National Society for Earthq uake Engineering,1972,5(3):63-88
[5]Whittaker A S,Bertero V V,Thomp son C I,Alsonson L J. Seismic testingof steelplate energy dissipation devices[J].Earth quake Spectra,1991,7(4):563-604
[6]TsaiKC,Chen HW,HongCP,Su Y F.Design of steel trian gular plate energy absorbers for seismic resistant construction[J]. Earthquake Spectra,1993,19(3):505-528
[7]欧进萍，吴斌．摩擦型与软钢屈服型耗能器的性能与减震效果的试验比较[J]．地震工程与工程振动，1995，15(3)：73-85．
[8]邢书涛，郭迅．一种新型软钢阻尼器力学性能和减震效果的研究[J]．地震工程与工程振动，2003，23(6)：187-192．
[9]周福霖．工程结构减震控制[M]．北京：地震出版社，1997．
[2]薛素铎，董军辉，卞晓芳，李彬双．一种新型形状记忆合金阻尼器[J]．建筑结构学报，2005，26(3)：45-50．
[3]李钢，李宏男．新型软钢阻尼器的减震性能研究[J]．振动与冲击，2006，25(3)：66-72．
[4]Kelly J M,Skinner R I,Heine AJ.Mechanisms of energy absorption in special devices foruse in earthquake resistant Structures[J].Bull.N.Z.National Society for Earthq uake Engineering,1972,5(3):63-88
[5]Whittaker A S,Bertero V V,Thomp son C I,Alsonson L J. Seismic testingof steelplate energy dissipation devices[J].Earth quake Spectra,1991,7(4):563-604
[6]TsaiKC,Chen HW,HongCP,Su Y F.Design of steel trian gular plate energy absorbers for seismic resistant construction[J]. Earthquake Spectra,1993,19(3):505-528
[7]欧进萍，吴斌．摩擦型与软钢屈服型耗能器的性能与减震效果的试验比较[J]．地震工程与工程振动，1995，15(3)：73-85．
[8]邢书涛，郭迅．一种新型软钢阻尼器力学性能和减震效果的研究[J]．地震工程与工程振动，2003，23(6)：187-192．
[9]周福霖．工程结构减震控制[M]．北京：地震出版社，1997．
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