高烈度地震區(qū)隧道洞口段地震動(dòng)力響應(yīng)及減震措施研究.pdf

1、重慶交通大學(xué)碩士學(xué)位論文高烈度地震區(qū)隧道洞口段地震動(dòng)力響應(yīng)及減震措施研究姓名：文棟良申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：橋梁與隧道工程指導(dǎo)教師：蔣樹(shù)屏王曉雯20100401ABSTRACTBecauseofthefrequentearthquake，peoplegraduallynoticedtheseismicdamageoftunnels，andbecauseofthegreaterdamageoftheentranceorexitoftunn

2、els，weshouldfocusseismicdesignontunnels’entranceorexit111ethesistakestheentranceofGalonglatunnelanditsshockabsorptionmeasurementstesearch，mainlystudiesonthepeakstressanddisplacementeffectoftheliningunderdifferentsinglepa

3、rtofseismicwave，therespondedaccelerationmagnifiedmodulusandfrequencytraitofslopeandinnerearth，thepeakverticaldisplacementofgroundwhichindifferentperpendiculardistanceawayfromthemiddlelineoflining，thewavingearthstressofli

4、ningthroughtunnels，thetransverseandverticalpeal【stressandpeal(displacementofttmnels’liningthroughfaultage，thedamagemodeofliningandearth，theshockabsorptionabilityofabsorberandantiseismicslot，andaffectionofabsorber’Selasti

5、cityquotietyonpeal(stressandpeal【displacementofliningunderearthquakeAllthesestudyisdonebylargeshakingtableexperimentandnumericalsimulation，andtheirmainresultis：①mdamageoftunnelsismainlycausedbytransversevibrationofthesei

6、smicwave；②Soilwillabsorbthellighfrequencyofseismicwave；therespondedaccelerationmagnifiedmodulusofslopeisincreasingfromitsfoottoground，alsotherespondedaccelerationmagnifiedmodulusofinnerearthisincreasingfromdeeptoground；t

7、hemaindamagemodeofslopeispartialsoilglidedfromthetopandcollapse，whilethemaindamagemodeofgroundisthelongandwidetransversecrack，alsosomeslightlycrackalongthetunnel(9neside—wailofliningattheveryentranceoftunnelwillsplitthro

8、ughthetunnelfirst，andthevaultandbottomoflininginfaultagewillbesnippedfirst；themainfrequencyresponseofliningisthesameaswhichofthesurroundsoil，meansliningisvibratedjust弱thesurroundsoil，andtheliningwon’tshowoffitsownvibrati

9、ontraitThemaindamagemodeofliningislongitudinalcracksinsidewallattheentrance，inclinedcracksinsidewallneartheentrance，liningsstaggertoeachotherattheanti—seismicslotwhentunnelpassingfaultage，andlongitudinalcracksatthebottom