纤维增强工程塑料板夹层橡胶隔震支座有限元分析
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摘要
利用轻质、低价纤维增强工程塑料板作为加劲层开发出一种新型隔震支座—纤维增强工程塑料板夹层橡胶隔震支座(FRPB)。利用通用有限元程序ABAQUS建立了无约束型支座、可靠约束型支座三维实体模型。对比探讨了无约束型支座、可靠约束型支座压剪状态下内部橡胶层中水平向应力、竖向应力、剪切应力的大小及分布状态。分别提出无约束型支座、可靠约束型支座水平承载机理。揭示了翘曲因素对于无约束型支座内部橡胶层应力状态影响的规律,为无约束型支座水平承载力及水平刚度的设计和研究提供参考。
Here,a new type of isolator-fiber-reinforced-plastic plate isolation bearing( FRPB) was presented taking a lightweight and low-cost fiber-reinforced-plastic as a reinforced layer. 3-D solid finite element models of UFRPB and BFRPB were established with ABAQUS. The magnitudes and distributions of horizontal stress,vertical stress,and shear stress of UFRPB and BFRPB were comparatively discussed under the action of pressure and shear. The horizontal loadbearing mechanism of UFRPB and BFRPB were presented. The effect of warpage on stress states in the inner rubber layer of UFRPB was revealed. The study results provided a reference for design and study of the horizonal load-bearing capacity and horizontal stiffness of UFRPB.
Here,a new type of isolator-fiber-reinforced-plastic plate isolation bearing( FRPB) was presented taking a lightweight and low-cost fiber-reinforced-plastic as a reinforced layer. 3-D solid finite element models of UFRPB and BFRPB were established with ABAQUS. The magnitudes and distributions of horizontal stress,vertical stress,and shear stress of UFRPB and BFRPB were comparatively discussed under the action of pressure and shear. The horizontal loadbearing mechanism of UFRPB and BFRPB were presented. The effect of warpage on stress states in the inner rubber layer of UFRPB was revealed. The study results provided a reference for design and study of the horizonal load-bearing capacity and horizontal stiffness of UFRPB.
引文
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[13]王斌,谭平,徐凯,等.新型纤维增强工程塑料板夹层橡胶隔震支座力学性能试验研究[J].土木工程学报,2012,45(S1):187-191.WANG Bin,TAN Ping,XU Kai,et al.Mechanical performance tests of a novel fiber-reinforced-plastic plate isolation bearing[J].China Civil Engineering Journal,2012,45(S1):187-191.
[14]谭平,徐凯,王斌,等.基于新型简易隔震支座的村镇建筑隔震性能研究[J].土木工程学报,2013,46(5):64-70.TAN Ping,XU Kai,WANG Bin,et al.Performance study of isolated rural buildings using novel simple isolators[J].China Civil Engineering Journal,2013,46(5):64-70.
[15]庄茁,由小川,廖剑晖,等.基于ABAQUS的有限元分析和应用[M].北京:清华大学出版社,2009.
[2]Kelly J M.Analysis of fiber-reinforced elastomeric isolator[J].Journal of Seismology and Earthquake Engineering,1999,2(1):19-34.
[3]Tsai H C.Compression stiffness of infinite-strip bearings of laminated elastic material interleaving with flexible reinforcements[J].International Journal of Solids and Structures,2004,41(24-25):6647-6660.
[4]Tsai H C,Kelly J M.Buckling load of seismic isolators affected by flexibility of reinforcement[J].International Journal of Solid and Structures,2005,42(7):255-269.
[5]Tsai H C,Kelly J M.Buckling of short beams with warping effect included[J].International Journal of Solids and Structures,2005,42(1):239-253.
[6]Tsai H C.Compression stiffness of circular bearings of laminated elastic material interleaving with flexible reinforcements[J].International Journal of Solids and Structures,2006,43(11-12):3484-3497.
[7]Pinarbasi S,Men G Y.Elastic layers bonded to flexible reinforcements[J].International Journal of Solids and Structures,2008,45(3-4):794-820.
[8]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.
[9]Dehghani A G,Aghakouchak A A,Kokabi M.Design,manufacturing and evaluation of the performance of steel like fiber reinforced elastomeric seismic isolators[J].Journal of Materials Processing Technology,2008,197(1-3):140-150.
[10]Toopchi-Nezhad H,Drysdale R G,Tait M J.Parametric study on the response of stable unbonded fiber-reinforced elastomeric isolators(SU-FREIs)[J].Journal of Composite Materials,2009,43(15):1569-1587.
[11]Kang G J,Kang B S.Dynamic analysis of fiber-reinforced elastomeric isolation structures[J].Journal of Mechanical Science and Technology,2009,23(8):1132-1141.
[12]张华,彭天波,李建中,等.FRP橡胶支座压缩性能分析[J].地震工程与工程振动,2011,31(3):154-160.ZHANG Hua,PENG Tian-bo,LI Jian-zhong,et al.Study on compression performance of FRP rubber bearing[J].Journal of Earthquake Engineering and Engineering Vibration,2011,31(3):154-160.
[13]王斌,谭平,徐凯,等.新型纤维增强工程塑料板夹层橡胶隔震支座力学性能试验研究[J].土木工程学报,2012,45(S1):187-191.WANG Bin,TAN Ping,XU Kai,et al.Mechanical performance tests of a novel fiber-reinforced-plastic plate isolation bearing[J].China Civil Engineering Journal,2012,45(S1):187-191.
[14]谭平,徐凯,王斌,等.基于新型简易隔震支座的村镇建筑隔震性能研究[J].土木工程学报,2013,46(5):64-70.TAN Ping,XU Kai,WANG Bin,et al.Performance study of isolated rural buildings using novel simple isolators[J].China Civil Engineering Journal,2013,46(5):64-70.
[15]庄茁,由小川,廖剑晖,等.基于ABAQUS的有限元分析和应用[M].北京:清华大学出版社,2009.
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