砂礫石墊層的隔震性能研究.pdf

1、西安建筑科技大學碩士學位論文砂礫石墊層的隔震性能研究姓名：鄒穎嫻申請學位級別：碩士專業(yè)：結(jié)構(gòu)工程指導教師：王社良20060601一‘‘^、西安建筑科技大學碩士學位論文StudyOfIsolatingCharacterForSandGravelCushionMajor：StructureEngineeringMaster：ZouYing—xianTutor：WangSheliangProfAbstractSandgravelcushion

2、isakindofgroundcushiontreatment，itiswidelyappliedbecauseofitslowcostItworksbychoosingappropriategravel，scree，talusdecries，coarsesand，mediumsandthenramthemtobecloselyknitted111esandgravelcushioncallincreasethebeatingcapac

3、ityofweakgroundworkIthaswidelyusebecauseofitsgoodcompactcharacterwaterpermeabilityhighshearingstrengthandlowdeformationThebasementistreatedasrigidincommonseismicdesignthedynamiccharacterofthewholestructureisdecidedbyonly

4、thesuperstructure，andtheinfectionofbasementandfoundationsoilisneglected，inthiswaythestructurebecalcnlatedisquitedifferentfromitsactualperformanceSoafinitecalculatingmodelconsidersthecombinedactivateofbasementsoil，sandgra

5、velcushion，basementandsuperstructurewastakeninthispaperinordertostudytheinfectionontheanti—seismicabilityofsuperstructurethatbroughtonbysandgravelcushionBasicisolationisthevibrationisolationtechniquewhichhasthemostdevelo

6、pedtheoryandthemostextensiveuseBasicisolationmainlyworksbysettingareliableisolatingzonebetweenthebasementandthestructure，inordertoreducethefundamentalfrequencyandprolongthefundamentalperiodtoke印thestructureawayfromthemai

7、nfrequencybandoftheearthquakewhichcarriesthemostenergyandinthiswaytheearthquakeenergythattransfersintothesuperstructurecanbereducedAtthesametime，thebasicimlafionsystemsusesomedissipatingequipmentstoreducestructuredisplac

8、ementinthiswayallthestructuredynamicresponsecanbereduced，andthestructureandtheestablishmentinitcanbesafewhenearthquakeoccurredInthispaperthedefinitionofsandgravelunderlayerandtheresearchingactualityofcombinedactivatearei