断层倾角对近断层地震动特征的影响

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1、AbstractInrecentyears，becauseofthegreatdamagescausedbyseveraldestructiveearthquakesoccuringlately,aswellasoftheaccumulationofthenear-faultseismicrecords，theresearchofcharacteristicsofnear-faultgroundmotionhasbecomeahotfocusofearthquakeengineeringathomeand

2、abroad．Inthelastfewyears，reseachersusuallyusedthemethodofstatisticalanalysisingtheattenuationrealationofnear-faultseismicrecordstostudythecharacteristicsofnear-faultgroundmotion．However,thismethodstronglydependsOUthequantityandqualityoftheseimicrecords．As

3、amaaeroffact，seismicrecordsisstillinsufficientSOfarinadditiontothevariousinfluencingfacorsofthenear-faultgroundmotion，however,wi血respecttoeachfacor,theamountoftherecordsbecomeslessandless．Astheresult，moreandmorereseachersattemptedtousethemethodoftheexplic

4、itfinite—elementnumericsimulationtostudythenear-faultgroundmotion，andtheyhaveachievedmanyvaluableresults．Inthispaper,theauthorusesthemethodoftheexplicitfinite—elementnumericalsimulation，whichisbasedonthemostsimpletwo·-dimensional··finite··elementmodleandk

5、inematicsourcemodel，tostudythebasiccharacteristicsofnear-faultgroundmotion，suchasthechangingtendencyofthehanging—walleffectandtheverticaleffectasweonlychangethefaultdiporthedepthofthetopofthefault．MoredetailsaresummarizedasfcIllows：1)Theresearchmethodsoft

6、henear-faultgroundmotionaresystemicallyreviewedandCompared．Thebasiccharacteristicsofnear-faultgroundmotionaresummarized，suchasthehangingwaileffect，theverticaleffect，therupturedirectivityeffect，theflingstepeffectandSOon，2)Thecomputingmethodsusedinthenumeri

7、calsimulationforwavemotion--thelumped—massfiniteelementmethodandtheartificalboundary中国地震局工程力学研究所硕士学位论文condition，areintroducedindetml．AndthecomputingprogramesforsolvingthedynamicresponseofbothSHandP-SVproblembased0npointsourcemodelarecodedindividually．3)In

8、thispaper，theauthoranalysesandcomparesboththedynamicandthekinematicsourcemodelsimply．Thekinematicsourcemodelbasedontheassumptionofthefinitefaultisintroducedatlength．Tomakeupforthelackofthehi曲-frequencycomponentsinth