中国台湾都会区基桩耐震性能分析初探
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摘要
结构物耐震性能评估参数包括量测震度、工程需求参数、破坏计量和决策变数等,采机率地震危害分析逐项计算各参数之年超越机率。研究采用EQWEAP程序并配合性能设计理念和中国台湾地震危害曲线以及规范建议,探讨了中国台湾都会区之桩基耐震性能。研究范例以近年来中国台湾地区具有代表性地震为主,藉由中小、设计和最大考量地震之标的最大加速度和各地区相似地盘构造的测站纪录,推求不同地震等级的桩基最大位移和弯矩,并检视其破坏特性;透过大量的参数研究和专家判断,桩基的耐震性能指针即能制订,该项分析流程可作为其它地工构造物耐震分析参考。
The parameters used to evaluate seismic performance of the structures include Intensity Measured(IM),Engineering Demand Parameter(EDP),Damage Measure(DM) and Decision Variable(DV).One can compute the annual exceedance of these parameters based on probability analysis of seismic hazard.This study adopts the EQWEAP analysis with the concepts of performance based design and seismic hazard curves as well as design codes to investigate the seismic performance of piles at Taiwan metropolitans.The representative earthquakes were selected.The largest pile displacements and moments were computed at various levels of earthquakes considering small to moderate design and maximum acceleration of maximum consideration EQs at different target PGAs and foundation sites of similar velocity profile.Applying with massive parametric analysis and specialist judgments,the indices for seismic performance of the pile foundation could be made.The corresponding analytical procedures can be applied to other geotechnical structures.
The parameters used to evaluate seismic performance of the structures include Intensity Measured(IM),Engineering Demand Parameter(EDP),Damage Measure(DM) and Decision Variable(DV).One can compute the annual exceedance of these parameters based on probability analysis of seismic hazard.This study adopts the EQWEAP analysis with the concepts of performance based design and seismic hazard curves as well as design codes to investigate the seismic performance of piles at Taiwan metropolitans.The representative earthquakes were selected.The largest pile displacements and moments were computed at various levels of earthquakes considering small to moderate design and maximum acceleration of maximum consideration EQs at different target PGAs and foundation sites of similar velocity profile.Applying with massive parametric analysis and specialist judgments,the indices for seismic performance of the pile foundation could be made.The corresponding analytical procedures can be applied to other geotechnical structures.
引文
[1]CHANG D W,LIN B S.EQWEAP~a Simplified Pro-cedure to Analyze Dynamic Pile-Soil Interaction with SoilLiquefaction Concerns[C]∥Second Taiwan-Japan JointWorkshop on Geotechnical Hazards from Large Earth-quake and Heavy Rainfall.Nagaoka,Japan,May 18-20,2006:155-162.
[2]CHANG D W,LINB S,CHENG S H.Dynamic Pile Be-haviors Affected by Liquefaction from EQWEAP Analysis[C]∥ISSMGE4th Int.Conf.on Earthquake Geotechni-cal Engineering,ISSMGE,Thessaloniki,Greece,June,2007.Greece:ISSMGE,2007:1336.
[3]CHANG D W,CHENG S H,LINB S.Discrete Wave E-quation Analysis for Seismic Responses of Piles[C]∥ISSMGE.Stress Wave 2008-8th International Confer-ence on the Application of Stress Wave Theory to Piles,Lisbon,Portugal,September 8-10,2008.Portugal:ISSMGE,2008:088-100.
[4]陈正兴,杨鹤雄,黄俊鸿,等.交通结构物基础耐震性能设计之研议[J].地工技术,2006,(109):73-82.(CHEN C H,YANG HS,HWANG J H,et al.Study onSeismic Performance Design for Foundations of Transpor-tation System[J].Sino-Geotechnics,2006,(109):73-82.(in Chinese))
[5]内政部营建署.建筑物耐震设计规范及解说[R].台北:营建杂志社,2006.
[6]SHIN H.Numerical Modeling of a Bridge System and ItsApplication for Performance-based Earthquake Engineer-ing[D].Washington:Department of Civil and Environ-mental Engineering,University of Washington,2007.
[7]KRAMER S L.Performance-based Earthquake Engineer-ing:Opportunities and Implications for Geotechnical En-gineering Practice[C]∥ASCE.Geotechnical EarthquakeEngineering and Soil Dynamics IV,ASCE,Sacramento,USA,May 18-22,2008.USA:ASCE,2008.
[8]JALAYER F.Direct probabilistic Seismic Analysis:Im-plementing Non-lineardynamic Assessments[D].StanfordCalitornia:Stanford University,2003.
[9]郑锦桐.中国台湾地区地震危害度的不确定性分析与参数解析[D].中国台湾桃园:国立中央大学地球物理研究所,2005.(CHENG C T.Uncertainty Analysis andDeaggregation of Seismic Hazard in Taiwan.[D].Taoyuan:Dept.of Earth Science&Inst.Of Geophysics,National Central University,2005.(in Chinese))
[11]李汉.土质参数折减系数应用于液化影响桩基础之波动方程分析[D].中国台湾淡水:淡江大学,2008.(LEE HT.Wave Equation Analysis on Piles Affected byLiquefaction Using Soil Parameter Reduction Coefficients[D].Tamsui:Tamkang University,2008.(in Chi-nese))
[12]张绍纶.孔隙水压模式应用于液化影响桩基础之波动方程分析[D].中国台湾淡水:淡江大学,2008.(CHANG S L.Wave Equation Analysis on Piles Affectedby Liquefaction Using Pore Water Pressure Model[D].Tamsui:Tamkang University,2008.(in Chinese))
[13]台安工程技术顾问公司.台北捷运P3257剑潭基地试桩报告书[R].中国台湾台北:台安工程技术顾问公司,1997.
[2]CHANG D W,LINB S,CHENG S H.Dynamic Pile Be-haviors Affected by Liquefaction from EQWEAP Analysis[C]∥ISSMGE4th Int.Conf.on Earthquake Geotechni-cal Engineering,ISSMGE,Thessaloniki,Greece,June,2007.Greece:ISSMGE,2007:1336.
[3]CHANG D W,CHENG S H,LINB S.Discrete Wave E-quation Analysis for Seismic Responses of Piles[C]∥ISSMGE.Stress Wave 2008-8th International Confer-ence on the Application of Stress Wave Theory to Piles,Lisbon,Portugal,September 8-10,2008.Portugal:ISSMGE,2008:088-100.
[4]陈正兴,杨鹤雄,黄俊鸿,等.交通结构物基础耐震性能设计之研议[J].地工技术,2006,(109):73-82.(CHEN C H,YANG HS,HWANG J H,et al.Study onSeismic Performance Design for Foundations of Transpor-tation System[J].Sino-Geotechnics,2006,(109):73-82.(in Chinese))
[5]内政部营建署.建筑物耐震设计规范及解说[R].台北:营建杂志社,2006.
[6]SHIN H.Numerical Modeling of a Bridge System and ItsApplication for Performance-based Earthquake Engineer-ing[D].Washington:Department of Civil and Environ-mental Engineering,University of Washington,2007.
[7]KRAMER S L.Performance-based Earthquake Engineer-ing:Opportunities and Implications for Geotechnical En-gineering Practice[C]∥ASCE.Geotechnical EarthquakeEngineering and Soil Dynamics IV,ASCE,Sacramento,USA,May 18-22,2008.USA:ASCE,2008.
[8]JALAYER F.Direct probabilistic Seismic Analysis:Im-plementing Non-lineardynamic Assessments[D].StanfordCalitornia:Stanford University,2003.
[9]郑锦桐.中国台湾地区地震危害度的不确定性分析与参数解析[D].中国台湾桃园:国立中央大学地球物理研究所,2005.(CHENG C T.Uncertainty Analysis andDeaggregation of Seismic Hazard in Taiwan.[D].Taoyuan:Dept.of Earth Science&Inst.Of Geophysics,National Central University,2005.(in Chinese))
[11]李汉.土质参数折减系数应用于液化影响桩基础之波动方程分析[D].中国台湾淡水:淡江大学,2008.(LEE HT.Wave Equation Analysis on Piles Affected byLiquefaction Using Soil Parameter Reduction Coefficients[D].Tamsui:Tamkang University,2008.(in Chi-nese))
[12]张绍纶.孔隙水压模式应用于液化影响桩基础之波动方程分析[D].中国台湾淡水:淡江大学,2008.(CHANG S L.Wave Equation Analysis on Piles Affectedby Liquefaction Using Pore Water Pressure Model[D].Tamsui:Tamkang University,2008.(in Chinese))
[13]台安工程技术顾问公司.台北捷运P3257剑潭基地试桩报告书[R].中国台湾台北:台安工程技术顾问公司,1997.
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