基于损伤和能量指标的隧道结构地震反应分析
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摘要
采用Hilbert-Huang变换的波谱分析技术,对输入地震波进行波谱分析;并根据能量原理,推导损伤状态下的能量反应方程.基于损伤能量方程对隧道结构进行非线性地震反应分析,讨论了隧道结构的抗震薄弱部位及其渐近破坏过程.研究结果表明:隧道衬砌拱肩和墙脚是隧道抗震的薄弱部位,在一些强震作用下,仰拱也会出现破坏,隧道抗震设计应加强这些部位的抗震措施.研究结果可为隧道结构抗震设计提供依据和指导.
Spectrum analysis of input earthquake waves is conducted by Hilbert-Huang transform technology,and energy response equation under damage condition is deduced based on energy principle.Damage index and energy index for nonlinear seismic response of tunnel structures are proposed,by which the seismic vulnerable area and progressive damage process of tunnels can be obtained.The experimental results show that the shoulder and the basement of the tunnel are the two seismic vulnerable areas.Furthermore,in the inverted arch of the tunnel damage would appear under some strong earthquakes.Aseismic measures should be reinforced in these vulnerable areas.The research results may be used as a reference to seismic design of tunnel structures.
Spectrum analysis of input earthquake waves is conducted by Hilbert-Huang transform technology,and energy response equation under damage condition is deduced based on energy principle.Damage index and energy index for nonlinear seismic response of tunnel structures are proposed,by which the seismic vulnerable area and progressive damage process of tunnels can be obtained.The experimental results show that the shoulder and the basement of the tunnel are the two seismic vulnerable areas.Furthermore,in the inverted arch of the tunnel damage would appear under some strong earthquakes.Aseismic measures should be reinforced in these vulnerable areas.The research results may be used as a reference to seismic design of tunnel structures.
引文
[1]钱七虎,何川,晏启祥.隧道工程动力响应特性与汶川地震隧道震害分析及启示[C]//汶川大地震工程震害调查分析与研究.北京:科学出版社,2009:608-618
[2]WANG Zheng-zheng,GAO Bo,JIANG Yuan-jun,et al.Investigation and assessment on mountaintunnels and geotechnical damage after the Wenchuanearthquake[J].Science in China,Series E:Technological Sciences,2009,52(2):546-558
[3]高波,王峥峥,袁松,等.汶川地震公路隧道震害启示[J].西南交通大学学报,2009,44(3):336-341
[4]李海清.隧道工程震害处治对策[C]//汶川大地震与四川公路隧道建设研讨会.成都:四川省公路学会隧道工程专业委员会,2008
[5]王海波,李德玉.拱坝抗震设计理论与实践[M].北京:中国水利水电出版社,2006
[6]中华人民共和国建设部.GB 50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2008
[7]周荣军,何玉林.北京至昆明高速公路四川境雅安至泸沽项目地震安全性评价报告[R].成都:四川赛思特科技有限责任公司,2005
[8]CSI.Wenchuan earthquake,China[EB/OL].[2009-11-06].http://wwwcsiaccn/sichuan/index080512htm
[9]USGS.M7.9 EASTERN SICHUANEARTHQUAKE,CHINA[EB/OL].[2009-11-06].http://earthquake.usgs.gov
[10]HUANG N E,SHEN Z,LONG S R,et al.Theempirical mode decomposition and the Hilbertspectrum for nonlinear and non-stationary timeseries analysis[J].Proceedings of the Royal Societyof London,Series A:Mathematical and PhysicalSciences,1998,454(1):899-995
[11]HUANG N E,SHEN Z,LONG S R,et al.A newview of nonlinear water waves:the Hilbert spectrum[J].Annual Review of Fluid Mechanics,1999,31(2):417-457
[12]王峥峥.跨断层隧道非线性地震损伤反应分析[D].成都:西南交通大学,2009
[2]WANG Zheng-zheng,GAO Bo,JIANG Yuan-jun,et al.Investigation and assessment on mountaintunnels and geotechnical damage after the Wenchuanearthquake[J].Science in China,Series E:Technological Sciences,2009,52(2):546-558
[3]高波,王峥峥,袁松,等.汶川地震公路隧道震害启示[J].西南交通大学学报,2009,44(3):336-341
[4]李海清.隧道工程震害处治对策[C]//汶川大地震与四川公路隧道建设研讨会.成都:四川省公路学会隧道工程专业委员会,2008
[5]王海波,李德玉.拱坝抗震设计理论与实践[M].北京:中国水利水电出版社,2006
[6]中华人民共和国建设部.GB 50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2008
[7]周荣军,何玉林.北京至昆明高速公路四川境雅安至泸沽项目地震安全性评价报告[R].成都:四川赛思特科技有限责任公司,2005
[8]CSI.Wenchuan earthquake,China[EB/OL].[2009-11-06].http://wwwcsiaccn/sichuan/index080512htm
[9]USGS.M7.9 EASTERN SICHUANEARTHQUAKE,CHINA[EB/OL].[2009-11-06].http://earthquake.usgs.gov
[10]HUANG N E,SHEN Z,LONG S R,et al.Theempirical mode decomposition and the Hilbertspectrum for nonlinear and non-stationary timeseries analysis[J].Proceedings of the Royal Societyof London,Series A:Mathematical and PhysicalSciences,1998,454(1):899-995
[11]HUANG N E,SHEN Z,LONG S R,et al.A newview of nonlinear water waves:the Hilbert spectrum[J].Annual Review of Fluid Mechanics,1999,31(2):417-457
[12]王峥峥.跨断层隧道非线性地震损伤反应分析[D].成都:西南交通大学,2009
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