簡介：TCLEE2009LIFELINEEARTHQUAKEENGINEERINGINAMULTIHAZARDENVIRONMENT?2009ASCE909TCLEE20091SEISMICDESIGNCRITERIAFORPILESUPPORTEDWHARVESATTHEPORTOFLONGBEACHCHENGLAI1,SE,MASCE,OMARAJARADAT2,PHD,PE,MASCE,MAXWEISMAIR3,SE,ANDARULKARULMOLI4,PHD,GE,FASCE1SENIORSTRUCTURALENGINEER,PORTOFLONGBEACH,925HARBORPLAZA,LONGBEACH,CA90802,LAIPOLBCOM,2SENIORPROJECTMANAGER,MOFFATTNEWDETAILSANDPRACTICESFORTHEDESIGNANDCONSTRUCTIONOFWHARVESWEREDEVELOPEDANDFOLLOWEDBYNEWCODESANDGUIDELINESFORPORTSTRUCTURESTHISWORK,HOWEVER,WASDRIVENBYDIFFERENTAUTHORITIES,OFTENNOTCLOSELYCOORDINATEDCODEWRITINGAUTHORITIES,OWNERSPORTS,ANDCONSULTANTSASARESULTOFTHERAPIDDEVELOPMENTINTHISFIELD,THERESULTINGDOCUMENTSFORTHESEISMICDESIGNOFWHARVESMADETHEIRINTERPRETATIONSOMETIMESDIFFICULTPOLBRECOGNIZEDTHENEEDFORUNIFORMANDPORTSPECIFICGUIDELINESANDDEVELOPEDPORTSPECIFICWHARFDESIGNCRITERIATHISPAPERSPECIFICALLYADDRESSESTHESEISMICDESIGNCRITERIATHEYINCLUDEGROUNDMOTIONSANDPERFORMANCECRITERIA,GEOTECHNICALCONSIDERATIONSWITHPARTICULARATTENTIONTOSOILSTRUCTUREINTERACTION,STRUCTURALDESIGNANDANALYSISMETHODS,ANDSEISMICDETAILINGTHESESUBJECTSARESPECIFICALLYADJUSTEDFORSITESPECIFICCONDITIONSINPOLB,SUCHASSEISMICITY,FOUNDATIONSOILS,CONSTRUCTIONPRACTICESANDTHEREQUIREMENTSOFTHEPORT’SENGINEERINGBUREAU,WHICHHADANIMPORTANTFUNCTIONINTHEDEVELOPMENTOFTHECRITERIAALLSEISMICDESIGNANDANALYSISPROCEDURESAREBASEDONDISPLACEMENTBASEDPROCEDURESTHEDEVELOPMENTOFTHECRITERIAWASREVIEWEDATVARIOUSSTAGESBYEXPERTSINSTRUCTURAL,GEOTECHNICAL,ANDEARTHQUAKEENGINEERINGDISCIPLINESANEXPERIMENTALPROGRAMVERIFIEDTHEANALYTICALASSUMPTIONSPOLB’SRECENTWHARFCONSTRUCTIONEXPERIENCECONFIRMEDTHEPRACTICALITYOFTHECONSTRUCTIONDETAILSITISANTICIPATEDTHATTHESECRITERIAWILLPROVIDEMOREUNIFORMITY,FOCUSONDESIGN,QUALITYASSURANCE,ANDMINIMIZECONSTRUCTIONCOSTS,WHILEPROVIDINGBETTERCOORDINATIONBETWEENPOLB’SENGINEERINGSTAFFANDCONSULTANTSDOWNLOADEDFROMASCELIBRARYORGBYCHANGSHAUNIVERSITYOFSCIENCEANDTECHNOLOGYON01/14/15COPYRIGHTASCEFORPERSONALUSEONLYALLRIGHTSRESERVEDTCLEE2009TCLEE2009LIFELINEEARTHQUAKEENGINEERINGINAMULTIHAZARDENVIRONMENT?2009ASCE9113MECHANICS,INCANDP2SENGINEERING,INCTHEEXPERTREVIEWTEAMINCLUDEDDRNIGELPRIESTLEY,EMERITUSPROFESSOR,DEPARTMENTOFSTRUCTURALENGINEERING,UNIVERSITYOFCALIFORNIA,SANDIEGOANDDRGEOFFREYMARTIN,PROFESSOR,DEPARTMENTOFCIVILENGINEERING,UNIVERSITYOFSOUTHERNCALIFORNIAWHARFDESIGNCRITERIATHEPOLBWDCDOCUMENTCONSISTSOFSIXSECTIONSCOVERINGFOURDIFFERENTASPECTSOFWHARFDESIGNINCLUDINGGEOTECHNICAL,STRUCTURAL,SEISMICANDELECTRICALTHISPAPERCOVERSTHEWDCSEISMICDESIGNASPECTSTHEWDCUTILIZESDISPLACEMENTBASEDDESIGNMETHODOLOGYANDUSESSTATEOFTHEARTINFORMATIONAVAILABLEINTHEAREASOFGEOLOGY,SEISMOLOGY,GEOTECHNICALENGINEERING,STRUCTURALENGINEERING,ANDSEISMICDESIGNTHREELEVELSEISMICHAZARDEVALUATIONCRITERIAAREUTILIZEDTHATALLOWTHEASSESSMENTOFSEISMICRISKSINAPRACTICALWAYTHEDEVELOPMENTOFSEISMICDESIGNCRITERIAINTHERECENTPASTWASDRIVENBYDIFFERENTAUTHORITIES,OFTENNOTCLOSELYCOORDINATEDCODEWRITINGAUTHORITIES,OWNERSPORTS,ANDCONSULTANTSASARESULTOFTHERAPIDDEVELOPMENTINTHISFIELD,THERESULTINGDOCUMENTSFORTHESEISMICDESIGNOFWHARVESMADETHEIRINTERPRETATIONSOMETIMESDIFFICULTTHELONGBEACHMUNICIPALCODEREQUIRESABUILDINGPERMITFROMTHEDEPARTMENTOFDEVELOPMENTSERVICESFORTHECONSTRUCTIONOFWHARFSTRUCTURESATTHEPOLBTHEDEPARTMENTOFDEVELOPMENTSERVICESENFORCESTHECALIFORNIABUILDINGCODECBCREF3THATUSESFORCEBASEDDESIGNAPPROACHTHEWDCWILLHELPTOSTREAMLINETHEWHARFCONSTRUCTIONPERMITPROCESSWITHTHEDEPARTMENTOFDEVELOPMENTSERVICESTHESEISMICDESIGNCRITERIAAPPLYTOTHEDESIGNOFANEWWHARFASADUCTILEFRAMESYSTEMOFVERTICALPILESSUPPORTINGACONCRETEDECKTHREEEARTHQUAKELEVELSARECONSIDEREDTHEOPERATIONALLEVELEARTHQUAKEOLE,THECONTINGENCYLEVELEARTHQUAKECLE,ANDTHECODELEVELDESIGNEARTHQUAKEDETHESETHREEEARTHQUAKELEVELSCORRESPONDTODIFFERENTPROBABILITIESANDRETURNPERIODS,ANDARERELATEDTODIFFERENTLEVELSOFPERFORMANCECRITERIATHEACCEPTABLELEVELOFSTRUCTURALDAMAGEISCONTROLLEDBYCONCRETE,STEELANDSTRANDSTRAINLIMITSINTHEPILESTHEOLEHASAPROBABILITYOFEXCEEDANCEOF50IN50YEARSTHEWHARVESSHOULDREMAINOPERATIONALMINORDAMAGE,SUCHASSOMECRACKINGISPERMITTED,BUTNOSPALLINGOFTHEPILECOVERCONCRETEATTHEOLEFORTHECLE,WHICHHASAPROBABILITYOFEXCEEDANCEOF10IN50YEARS,THEWHARVESMAYBECOMETEMPORARILYNONOPERATIONAL,BUTTHEDAMAGEMUSTBEREPAIRABLEWITHINAREASONABLEAMOUNTOFTIMETHEDECORRESPONDSTOALARGERANDRAREEARTHQUAKETHANTHEOLEANDCLETHEDESEISMICHAZARDCRITERIAREQUIRETHATTHEWHARVESMUSTNOTCOLLAPSEANDMUSTNOTCOMPROMISELIFESAFETY,ASDEFINEDPERASCESTANDARD705ASCE,2006ACCEPTABLEANALYTICALMETHODSFORWHARFSEISMICDESIGNINCLUDEMODALRESPONSESPECTRUMANALYSIS,SINGLEMODETRANSVERSEANALYSIS,SUBSTITUTESTRUCTUREANALYSIS,ANDNONLINEARTIMEHISTORYANALYSISEXPECTEDMATERIALPROPERTIESAREDEFINEDFORDETERMININGPILESTIFFNESS,ANDGENERALANALYSISPROCEDURESAREDESCRIBEDGEOTECHNICALISSUESSUCHASSOILSTRUCTUREINTERACTIONANDLIQUEFACTIONSHALLBECONSIDEREDINTHEDESIGNTHECRITERIAALSODEFINETWOSEPARATELOADINGCONDITIONSTOCAPTURETHEEFFECTSOFSOILSTRUCTUREINTERACTIONDOWNLOADEDFROMASCELIBRARYORGBYCHANGSHAUNIVERSITYOFSCIENCEANDTECHNOLOGYON01/14/15COPYRIGHTASCEFORPERSONALUSEONLYALLRIGHTSRESERVED

簡介：1SEISMICDESIGNCRITERIAFORPILESUPPORTEDWHARVESATTHEPORTOFLONGBEACHCHENGLAI1,SE,MASCE,OMARAJARADAT2,PHD,PE,MASCE,MAXWEISMAIR3,SE,ANDARULKARULMOLI4,PHD,GE,FASCE1SENIORSTRUCTURALENGINEER,PORTOFLONGBEACH,925HARBORPLAZA,LONGBEACH,CA90802,LAIPOLBCOM,2SENIORPROJECTMANAGER,MOFFATTNEWDETAILSANDPRACTICESFORTHEDESIGNANDCONSTRUCTIONOFWHARVESWEREDEVELOPEDANDFOLLOWEDBYNEWCODESANDGUIDELINESFORPORTSTRUCTURESTHISWORK,HOWEVER,WASDRIVENBYDIFFERENTAUTHORITIES,OFTENNOTCLOSELYCOORDINATEDCODEWRITINGAUTHORITIES,OWNERSPORTS,ANDCONSULTANTSASARESULTOFTHERAPIDDEVELOPMENTINTHISFIELD,THERESULTINGDOCUMENTSFORTHESEISMICDESIGNOFWHARVESMADETHEIRINTERPRETATIONSOMETIMESDIFFICULTPOLBRECOGNIZEDTHENEEDFORUNIFORMANDPORTSPECIFICGUIDELINESANDDEVELOPEDPORTSPECIFICWHARFDESIGNCRITERIATHISPAPERSPECIFICALLYADDRESSESTHESEISMICDESIGNCRITERIATHEYINCLUDEGROUNDMOTIONSANDPERFORMANCECRITERIA,GEOTECHNICALCONSIDERATIONSWITHPARTICULARATTENTIONTOSOILSTRUCTUREINTERACTION,STRUCTURALDESIGNANDANALYSISMETHODS,ANDSEISMICDETAILINGTHESESUBJECTSARESPECIFICALLYADJUSTEDFORSITESPECIFICCONDITIONSINPOLB,SUCHASSEISMICITY,FOUNDATIONSOILS,CONSTRUCTIONPRACTICESANDTHEREQUIREMENTSOFTHEPORT’SENGINEERINGBUREAU,WHICHHADANIMPORTANTFUNCTIONINTHEDEVELOPMENTOFTHECRITERIAALLSEISMICDESIGNANDANALYSISPROCEDURESAREBASEDONDISPLACEMENTBASEDPROCEDURESTHEDEVELOPMENTOFTHECRITERIAWASREVIEWEDATVARIOUSSTAGESBYEXPERTSINSTRUCTURAL,GEOTECHNICAL,ANDEARTHQUAKEENGINEERINGDISCIPLINESANEXPERIMENTALPROGRAMVERIFIEDTHEANALYTICALASSUMPTIONSPOLB’SRECENTWHARFCONSTRUCTIONEXPERIENCECONFIRMEDTHEPRACTICALITYOFTHECONSTRUCTIONDETAILSITISANTICIPATEDTHATTHESECRITERIAWILLPROVIDEMOREUNIFORMITY,FOCUSONDESIGN,QUALITYASSURANCE,ANDMINIMIZECONSTRUCTIONCOSTS,WHILEPROVIDINGBETTERCOORDINATIONBETWEENPOLB’SENGINEERINGSTAFFANDCONSULTANTSTCLEE2009LIFELINEEARTHQUAKEENGINEERINGINAMULTIHAZARDENVIRONMENT?2009ASCE909TCLEE2009DOWNLOADEDFROMASCELIBRARYORGBYCHANGSHAUNIVERSITYOFSCIENCEANDTECHNOLOGYON01/14/15COPYRIGHTASCEFORPERSONALUSEONLYALLRIGHTSRESERVED3MECHANICS,INCANDP2SENGINEERING,INCTHEEXPERTREVIEWTEAMINCLUDEDDRNIGELPRIESTLEY,EMERITUSPROFESSOR,DEPARTMENTOFSTRUCTURALENGINEERING,UNIVERSITYOFCALIFORNIA,SANDIEGOANDDRGEOFFREYMARTIN,PROFESSOR,DEPARTMENTOFCIVILENGINEERING,UNIVERSITYOFSOUTHERNCALIFORNIAWHARFDESIGNCRITERIATHEPOLBWDCDOCUMENTCONSISTSOFSIXSECTIONSCOVERINGFOURDIFFERENTASPECTSOFWHARFDESIGNINCLUDINGGEOTECHNICAL,STRUCTURAL,SEISMICANDELECTRICALTHISPAPERCOVERSTHEWDCSEISMICDESIGNASPECTSTHEWDCUTILIZESDISPLACEMENTBASEDDESIGNMETHODOLOGYANDUSESSTATEOFTHEARTINFORMATIONAVAILABLEINTHEAREASOFGEOLOGY,SEISMOLOGY,GEOTECHNICALENGINEERING,STRUCTURALENGINEERING,ANDSEISMICDESIGNTHREELEVELSEISMICHAZARDEVALUATIONCRITERIAAREUTILIZEDTHATALLOWTHEASSESSMENTOFSEISMICRISKSINAPRACTICALWAYTHEDEVELOPMENTOFSEISMICDESIGNCRITERIAINTHERECENTPASTWASDRIVENBYDIFFERENTAUTHORITIES,OFTENNOTCLOSELYCOORDINATEDCODEWRITINGAUTHORITIES,OWNERSPORTS,ANDCONSULTANTSASARESULTOFTHERAPIDDEVELOPMENTINTHISFIELD,THERESULTINGDOCUMENTSFORTHESEISMICDESIGNOFWHARVESMADETHEIRINTERPRETATIONSOMETIMESDIFFICULTTHELONGBEACHMUNICIPALCODEREQUIRESABUILDINGPERMITFROMTHEDEPARTMENTOFDEVELOPMENTSERVICESFORTHECONSTRUCTIONOFWHARFSTRUCTURESATTHEPOLBTHEDEPARTMENTOFDEVELOPMENTSERVICESENFORCESTHECALIFORNIABUILDINGCODECBCREF3THATUSESFORCEBASEDDESIGNAPPROACHTHEWDCWILLHELPTOSTREAMLINETHEWHARFCONSTRUCTIONPERMITPROCESSWITHTHEDEPARTMENTOFDEVELOPMENTSERVICESTHESEISMICDESIGNCRITERIAAPPLYTOTHEDESIGNOFANEWWHARFASADUCTILEFRAMESYSTEMOFVERTICALPILESSUPPORTINGACONCRETEDECKTHREEEARTHQUAKELEVELSARECONSIDEREDTHEOPERATIONALLEVELEARTHQUAKEOLE,THECONTINGENCYLEVELEARTHQUAKECLE,ANDTHECODELEVELDESIGNEARTHQUAKEDETHESETHREEEARTHQUAKELEVELSCORRESPONDTODIFFERENTPROBABILITIESANDRETURNPERIODS,ANDARERELATEDTODIFFERENTLEVELSOFPERFORMANCECRITERIATHEACCEPTABLELEVELOFSTRUCTURALDAMAGEISCONTROLLEDBYCONCRETE,STEELANDSTRANDSTRAINLIMITSINTHEPILESTHEOLEHASAPROBABILITYOFEXCEEDANCEOF50IN50YEARSTHEWHARVESSHOULDREMAINOPERATIONALMINORDAMAGE,SUCHASSOMECRACKINGISPERMITTED,BUTNOSPALLINGOFTHEPILECOVERCONCRETEATTHEOLEFORTHECLE,WHICHHASAPROBABILITYOFEXCEEDANCEOF10IN50YEARS,THEWHARVESMAYBECOMETEMPORARILYNONOPERATIONAL,BUTTHEDAMAGEMUSTBEREPAIRABLEWITHINAREASONABLEAMOUNTOFTIMETHEDECORRESPONDSTOALARGERANDRAREEARTHQUAKETHANTHEOLEANDCLETHEDESEISMICHAZARDCRITERIAREQUIRETHATTHEWHARVESMUSTNOTCOLLAPSEANDMUSTNOTCOMPROMISELIFESAFETY,ASDEFINEDPERASCESTANDARD705ASCE,2006ACCEPTABLEANALYTICALMETHODSFORWHARFSEISMICDESIGNINCLUDEMODALRESPONSESPECTRUMANALYSIS,SINGLEMODETRANSVERSEANALYSIS,SUBSTITUTESTRUCTUREANALYSIS,ANDNONLINEARTIMEHISTORYANALYSISEXPECTEDMATERIALPROPERTIESAREDEFINEDFORDETERMININGPILESTIFFNESS,ANDGENERALANALYSISPROCEDURESAREDESCRIBEDGEOTECHNICALISSUESSUCHASSOILSTRUCTUREINTERACTIONANDLIQUEFACTIONSHALLBECONSIDEREDINTHEDESIGNTHECRITERIAALSODEFINETWOSEPARATELOADINGCONDITIONSTOCAPTURETHEEFFECTSOFSOILSTRUCTUREINTERACTIONTCLEE2009LIFELINEEARTHQUAKEENGINEERINGINAMULTIHAZARDENVIRONMENT?2009ASCE911TCLEE2009DOWNLOADEDFROMASCELIBRARYORGBYCHANGSHAUNIVERSITYOFSCIENCEANDTECHNOLOGYON01/14/15COPYRIGHTASCEFORPERSONALUSEONLYALLRIGHTSRESERVED

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簡介：PAGE1高電壓技術(shù)課程設(shè)計高電壓技術(shù)課程設(shè)計沖擊電壓發(fā)生器的設(shè)計班級姓名學(xué)號指導(dǎo)老師PAGE3二、沖擊電壓發(fā)生器的功用及原理二、沖擊電壓發(fā)生器的功用及原理沖擊電壓發(fā)生器是一種產(chǎn)生脈沖波的高電壓發(fā)生裝置。原先它只被用于研究電力設(shè)備遭受大氣過電壓（雷擊）時的絕緣性能，近年來又被用于研究電力設(shè)備遭受操作過電壓時的絕緣性能。所以對沖擊電壓發(fā)生器的要求，不僅能產(chǎn)生出現(xiàn)在電力設(shè)備上的雷電波形，還能產(chǎn)生操作過電壓波形。沖擊電壓的破壞作用不僅決定于幅值，還與波形陡度有關(guān)，對某些設(shè)備要采用截斷波來進(jìn)行試驗(yàn)。沖擊電壓發(fā)生器要滿足兩個要求首先要能輸出幾十萬到幾百萬伏的電壓，同時這電壓要具有一定的波形。它的原理圖如圖2。實(shí)驗(yàn)變壓器T和高壓硅堆D構(gòu)成整流電源，經(jīng)過保護(hù)電阻R及充電電阻R向主電容器C1C4充電，充電到U，出現(xiàn)在球隙G1G4上的電位差也為U，若事先把球間隙距離調(diào)到稍大于U，球隙不會放電。當(dāng)需要使沖擊機(jī)動作時，可向點(diǎn)火球隙的針極送去一脈沖電壓，針極和球皮只見產(chǎn)生一小火花，引起點(diǎn)火球隙放電，于是電容器C1的上極板經(jīng)G1接地，點(diǎn)1電位由地電位變?yōu)閁。電容器C1與C2間有充電電阻R隔開，R比較大，在G1放電瞬間，點(diǎn)2和點(diǎn)3電位不可能突然改變，點(diǎn)3電位仍為U，中間球隙G2上的電位差突然升到2U，G2馬上放電，于是點(diǎn)2電位變?yōu)?U。同理，G3，G4也跟著放電，電容器C1C4串聯(lián)起來了，最后球隙G0也放電，此時輸出電壓為C1C4上電壓的總和，即4U。上述一系列過程可被概括為“電容器并聯(lián)充電，而后串聯(lián)放電”。

簡介：XX省XX煤礦礦礦礦區(qū)地區(qū)地質(zhì)環(huán)質(zhì)環(huán)境治理（一期）境治理（一期）初步初步設(shè)計設(shè)計方案方案XX省煤省煤礦設(shè)計礦設(shè)計院二0一三年二月一三年二月提交時間2013年2月目錄1前言前言111任務(wù)由來112工程區(qū)概況213工程治理方案714設(shè)計依據(jù)815項目的必要性與緊迫性82邊坡工程地坡工程地質(zhì)特征及特征及穩(wěn)定性定性評價1021概述1022形態(tài)特征及結(jié)構(gòu)特征1023物質(zhì)組成1224地下水特征1225邊坡變形特征及穩(wěn)定性評價123治理工程治理工程設(shè)計設(shè)計1431設(shè)計目標(biāo)及原則1432邊坡安全等級及設(shè)計標(biāo)準(zhǔn)1433設(shè)計依據(jù)1434治理工程總體設(shè)計1535分項工程設(shè)計1536主要工程量174工程工程監(jiān)測設(shè)計監(jiān)測設(shè)計1841監(jiān)測工作的目的與任務(wù)1842工程監(jiān)測設(shè)計1843監(jiān)測管理225施工施工組織設(shè)計組織設(shè)計2451施工條件2452施工程序2653施工布置2654施工方法及施工技術(shù)要求2655施工進(jìn)度2956施工安全29