拉森钢板桩施工专项方案12

37620076郑华山*(250001)[],,,21,[]AnalysisonMicrovibrationProofFoundationDesignZhengHuashan(TheArchitecturalDesign&ResearchInstituteofShangdongProvince,Jinan250001,China)Abstract:Theantiresonancemethod,whichmakesthesystemintrinsicfrequencyproperlystrongerthantheforcedfrequenciesoftheambientvibrationsources,isintroduced.Andtheactiveandpassiveisolationmeasuresagainstvibrationaredevelopedtolimitthemaximumamplitudeofthemicrovibrationprooffoundationtotheacceptedscope.Thefoundationsoftwentyonehighprecisionmachinesandinstrumentshavebeendesignedandworkedsuccessfullyundertheprinciplessupplied,whichcanbereferencestothesimilarprojects.Keywords:microvibrationprooffoundation;groundtreatment;pilefoundation;intrinsicfrequency;randomvibration;forcedvibration;amplitude;activeisolationofvibration;passiveisolationofvibration*:3616301;:2012040,,,,,,,,,,()1,,,,20%~30%,,10m,,,37,4~5m,1M,1,,,,!,,,,,,,,,,10m[7]18219214000m2,,8,2t7,3t1,2,222[6],,,∀1,05~27m;∀2,06~09m;#1,092m,30%,ps=094~116MPa,130kPa;#2,03~12m,357%,ps=103~240MPa,122MPa,98kPa;#3,,37~53m,295%,ps=332MPa,92kPa;∃,182m,405%~487%,ps=057~078MPa,06MPa,80kPa;%,61~93m;&1,24~66m,ps093MPa;&4,,45~54m,ps=124~202MPa,144MPa;∋1,20~24m,Es=16MPa;∋2,06~16m,Es=15MPa;(1,30~39m,Es=20MPa;(2,25~114m,Es=16MPa;)1,38~65m,Es=8MPa;)2,Es=10MPa,(200141~3)05~07m,,2319(310m),,,3,,,,3SJ104SJ10,M,20K,,P(t)sint,3,,(y(t))4SJ105[2]EEO112001,19,,,,195SJ10206,24,,,,,,251);2),6;3),,23(1),,,(2),,,(3),,,,[1](GJ08∗11∗1999)[S].[2](GB50040∗96)[S].[3].[M].:,1983.[4].()[M].:,1961.[5],,.()[M].[6].[R].2001.[7].[J].,1979(2).(40),,,,,346(1),,,(2),,(3),,,[1],.[M].:,1997.[2].[M].:,1998.[3].[D].,1998.[4]HASHASHYMA,WHITTLEAJ.Groundmovementpredictionfordeepexcavationsinsoftclay[J].JGeotech.Eng.ASCE.,1996,122(6).[5],,.[J].,2002,32(7).[6],,.[J].,2002,32(2).[7],.[J].,2004,21(3).[8].[D].,2004.20