钢筋沥青隔震层弹性极限状态方程研究
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摘要
基于钢筋沥青隔震层的基本构造和工作原理,将钢筋沥青隔震层在地震作用下的竖向受力钢筋简化为上端有水平力作用下的理想轴心压杆模型,依据钢筋平面内稳定推导出钢筋沥青隔震层的弹性临界承载力与弹性极限位移公式,从而得到隔震层减震系数公式。通过单质点钢筋隔震层模型、钢筋沥青隔震层模型振动台试验验证,结果表明理论和试验符合较好。根据减震系数应用弹性临界承载力与弹性极限位移公式,能得到钢筋沥青隔震层的所有设计参数,可供设计参考和使用。
This paper introduces the basic structure and working principle of steel reinforced steel-asphalt isolated layer,and simplifies the vertical reinforcement force mode of reinforced steel asphalt isolated layer under the action of earthquake to an ideal axial compression pole model with horizontal force,and deduces the elastic critical bearing capacity and elastic limit displacement formula of reinforced asphalt isolated layer according to the stability of the steel reinforced plane so as to obtain the formula of damping coefficient of seismic isolation layer.Through the single-point reinforced-steel isolation layer model and reinforced asphalt-rock vibration isolation table model test,the results show that the theory and test are in good agreement.According to the elastic critical bearing capacity applied with damping coefficient and elastic limit displacement formula,all the design parameters of steel asphalt isolated layer can be obtained for design reference and use.
This paper introduces the basic structure and working principle of steel reinforced steel-asphalt isolated layer,and simplifies the vertical reinforcement force mode of reinforced steel asphalt isolated layer under the action of earthquake to an ideal axial compression pole model with horizontal force,and deduces the elastic critical bearing capacity and elastic limit displacement formula of reinforced asphalt isolated layer according to the stability of the steel reinforced plane so as to obtain the formula of damping coefficient of seismic isolation layer.Through the single-point reinforced-steel isolation layer model and reinforced asphalt-rock vibration isolation table model test,the results show that the theory and test are in good agreement.According to the elastic critical bearing capacity applied with damping coefficient and elastic limit displacement formula,all the design parameters of steel asphalt isolated layer can be obtained for design reference and use.
引文
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[4]MA Chao,LU Dechun,DU Xiuli.Seismic performance upgrading for underground structures by introducing sliding isolation bearings[J].Tunnelling and Underground Space Technology,2018,4(74):1-9.
[5]SHI Zhifei,CHENG Zhibao,XIANG Hongjun.Seismic isolation foundations with effective attenuation zones[J].Soil Dynamics and Earthquake Engineering,2014(57):143-151.
[6]曹万林,戴租远,叶炜,等.村镇建筑低成本隔震技术研究现状与展望[J].自然灾害学报,2014,23(6):38-46.CAO Wanlin,DAI Zuyuan,YE Wei,et al.Research and prospect of low-cost isolation techniques for rural buildings[J].Journal of Natural Disasters,2014,23(6):38-46.
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[8]尚守平,周志锦,刘可,等.一种钢筋-沥青复合隔震层的性能[J].铁道科学与工程学报,2009,6(3):13-16.SHANG Shouping,ZHOU Zhijin,LIU Ke,et al.The research on the steel-asphalt isolation layer[J].Journal of Railway Science and Engineering,2009,6(3):13-16.
[9]尚守平,朱博闻,吴建任,等.钢筋-沥青复合隔震层实际工程应用研究[J].湖南大学学报(自然科学版),2013,40(7):1-8.SHANG Shouping,ZHU Bowen,WU Jianren,et al.Research on steel-asphalt isolation layer in practical engineering[J].Journal of Hunan University(Natural Sciences),2013,40(7):1-8.
[10]尚守平,姚菲,刘可.一种新型隔震层的构造及其振动台试验研究[J].土木工程学报,2011,44(2):36-41.SHANG Shouping,YAO Fei,LIU Ke.Study of the strucyure of a new type of isolation layer and shaking table test[J].China Civil Engineering Journal,2011,44(2):36-41.
[11]尚守平,杨龙.钢筋沥青隔震层位移控制研究[J].土木工程学报,2015,48(2):26-33.SHANG Shouping,YANG Long.Research on displacement control of steel-asphalt isolation layer[J].China Civil Engineering Journal,2015,48(2):26-33.
[12]童根树.钢结构的平面内稳定[M].北京:中国建筑工业出版社,2015.TONG Genshu.In-plane stability of steel structures[M].Beijing:China Building Industry Press,2015.
[2]尚守平,崔向龙.基础隔震研究与应用的新进展及问题[J].广西大学学报(自然科学版),2016,41(1):21-28.SHANG Shouping,CUI Xianglong.New progress and problems in research and application of base isolation[J].Journal of Guangxi University(Natural Science Edition),2016,41(1):21-28.
[3]Karayel V,Yuksel E,Gokce T,et al.Spring tube braces for seismic isolation of buildings[J].Earthquake Engineering and Engineering Vibration,2017,16(1):219-231.
[4]MA Chao,LU Dechun,DU Xiuli.Seismic performance upgrading for underground structures by introducing sliding isolation bearings[J].Tunnelling and Underground Space Technology,2018,4(74):1-9.
[5]SHI Zhifei,CHENG Zhibao,XIANG Hongjun.Seismic isolation foundations with effective attenuation zones[J].Soil Dynamics and Earthquake Engineering,2014(57):143-151.
[6]曹万林,戴租远,叶炜,等.村镇建筑低成本隔震技术研究现状与展望[J].自然灾害学报,2014,23(6):38-46.CAO Wanlin,DAI Zuyuan,YE Wei,et al.Research and prospect of low-cost isolation techniques for rural buildings[J].Journal of Natural Disasters,2014,23(6):38-46.
[7]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.
[8]尚守平,周志锦,刘可,等.一种钢筋-沥青复合隔震层的性能[J].铁道科学与工程学报,2009,6(3):13-16.SHANG Shouping,ZHOU Zhijin,LIU Ke,et al.The research on the steel-asphalt isolation layer[J].Journal of Railway Science and Engineering,2009,6(3):13-16.
[9]尚守平,朱博闻,吴建任,等.钢筋-沥青复合隔震层实际工程应用研究[J].湖南大学学报(自然科学版),2013,40(7):1-8.SHANG Shouping,ZHU Bowen,WU Jianren,et al.Research on steel-asphalt isolation layer in practical engineering[J].Journal of Hunan University(Natural Sciences),2013,40(7):1-8.
[10]尚守平,姚菲,刘可.一种新型隔震层的构造及其振动台试验研究[J].土木工程学报,2011,44(2):36-41.SHANG Shouping,YAO Fei,LIU Ke.Study of the strucyure of a new type of isolation layer and shaking table test[J].China Civil Engineering Journal,2011,44(2):36-41.
[11]尚守平,杨龙.钢筋沥青隔震层位移控制研究[J].土木工程学报,2015,48(2):26-33.SHANG Shouping,YANG Long.Research on displacement control of steel-asphalt isolation layer[J].China Civil Engineering Journal,2015,48(2):26-33.
[12]童根树.钢结构的平面内稳定[M].北京:中国建筑工业出版社,2015.TONG Genshu.In-plane stability of steel structures[M].Beijing:China Building Industry Press,2015.