纤维-PTFE板橡胶组合隔震支座水平性能试验研究
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摘要
纤维-PTFE板橡胶组合隔震支座是用纤维布或PTFE板作为加强层来束缚橡胶层的横向变形的,由于加强层的不同,在一定程度上将引起支座力学性能的变化。为研究支座的水平力学性能,设计4组隔震支座进行水平剪切试验研究,结果表明,在反复加载过程中,支座的力学性能稳定,各支座的水平刚度受加强层影响不大,各支座等效阻尼比随着纤维布层数的增多而增加;特别是在较大剪切变形下,纤维-PTFE板橡胶组合隔震支座具有较大的等效阻尼比,表现出良好的耗能性能。
In the fiber-PTFE board and rubber combined isolation bearings, fiber cloth or PTFE board is as reinforced layer, which bounds to the lateral deformation of the rubber layer. Due to the difference in reinforced layer, the bearing mechanical properties is changed to some extent. In order to study the horizontal mechanical properties of bearings, 4 groups of isolation bearings were designed to take the horizontal shear test. The results show that during the process of repeated loading, the mechanical properties of bearings is stable, the reinforced layers have little influence on the horizontal stiffness of bearings, in addition, the equivalent damping ratio of bearings is increased with the fiber cloth layer increasing. Especially under the larger shear deformation, the fiber- PTFE board and rubber combined isolation bearings have higher equivalent damping ratio and better performance of energy consumption.
In the fiber-PTFE board and rubber combined isolation bearings, fiber cloth or PTFE board is as reinforced layer, which bounds to the lateral deformation of the rubber layer. Due to the difference in reinforced layer, the bearing mechanical properties is changed to some extent. In order to study the horizontal mechanical properties of bearings, 4 groups of isolation bearings were designed to take the horizontal shear test. The results show that during the process of repeated loading, the mechanical properties of bearings is stable, the reinforced layers have little influence on the horizontal stiffness of bearings, in addition, the equivalent damping ratio of bearings is increased with the fiber cloth layer increasing. Especially under the larger shear deformation, the fiber- PTFE board and rubber combined isolation bearings have higher equivalent damping ratio and better performance of energy consumption.
引文
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[2]Kelly J M.Analysis of fiber-reinforced elastomeric isolators[J].Journal of Seismology and Earthquake Engineering,1999,2(1):19–34
[3]Toopchi-Nezhad H,Tait M J,Drysdale R G.Testing And modeling of square carbon fiber reinforced elastomeric seismic isolators[J].Structural Control and Health Monitoring,2008,15(6):876–900
[4]黄襄云,周福霖,曹京源,等.纤维橡胶隔震结构模拟地震振动台试验研究及仿真分析[J].广州大学学报:自然科学版,2010(9)5:21-26(Huang Xiangyun,Zhou Fulin,Cao Jingyuan,et al.Simulating earthquake shaking table tests of isolation structure with fiber-reinforced isolator and finite element analysis[J].Journal of Guangzhou University:Natural Science Edition,2010(9)5:21-26(in Chinese))
[5]全国橡胶与橡胶制品标准化技术委员会橡胶杂品分技术委员会,广州大学工程抗震研究中心.橡胶支座国家标准理解与实施[M].北京,中国标准出版社,2009
[6]CECS126:2001叠层橡胶支座隔震技术规程[S].北京:中国工程建设标准化协会,2001(CECS126:2001 Technical specification for seismic-isolation with laminated rubber bearing isolators[S].Beijing:China Association for Engineering Construction Standardization,2001(in Chinese))
[2]Kelly J M.Analysis of fiber-reinforced elastomeric isolators[J].Journal of Seismology and Earthquake Engineering,1999,2(1):19–34
[3]Toopchi-Nezhad H,Tait M J,Drysdale R G.Testing And modeling of square carbon fiber reinforced elastomeric seismic isolators[J].Structural Control and Health Monitoring,2008,15(6):876–900
[4]黄襄云,周福霖,曹京源,等.纤维橡胶隔震结构模拟地震振动台试验研究及仿真分析[J].广州大学学报:自然科学版,2010(9)5:21-26(Huang Xiangyun,Zhou Fulin,Cao Jingyuan,et al.Simulating earthquake shaking table tests of isolation structure with fiber-reinforced isolator and finite element analysis[J].Journal of Guangzhou University:Natural Science Edition,2010(9)5:21-26(in Chinese))
[5]全国橡胶与橡胶制品标准化技术委员会橡胶杂品分技术委员会,广州大学工程抗震研究中心.橡胶支座国家标准理解与实施[M].北京,中国标准出版社,2009
[6]CECS126:2001叠层橡胶支座隔震技术规程[S].北京:中国工程建设标准化协会,2001(CECS126:2001 Technical specification for seismic-isolation with laminated rubber bearing isolators[S].Beijing:China Association for Engineering Construction Standardization,2001(in Chinese))
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