简介：Astheoffshoreindustriesmovefromshallowtodeepwatersinexcessof1000m,therehasbeenrapiddevelopmentofoceanengineeringpractices.Innovationsintheoreticalandappliedmechanicshavebeenessentialinthisshiftandinunderpinningtheexploitationofoffshoreoilandgasandrenewableenergyresourcesworldwide.Understandingandpredictingphysicalmechanismsofstructure-soilinteractionsarevitalforthestabilityandsafetyofoffshoreengineeringstructures.Accordingly,inthisspecialissueofTheoretical&AppliedMechanicsLetters(TAML),eight

简介：Thisletterpresentsanewanalyticalapproximationforwave(current)-induceddynamicsoilresponseinmarinesediments.Inthemodel,thethird-orderapproximationforwave-currentinteractionsisemployedfortheflowmodel,whileBiot’sdynamicporo-elasticmodelisusedtosimulatetheporousflowinaseabed.Thenewlyanalyticalsolutionisvalidatedwiththefieldobservations.Basedonthesolution,effectsofcurrentsandwave-nonlinearityonsoilresponseareexaminedandaparametricstudywillbecarriedouttoexaminetheinfluenceofcurrentsontheliquefactionpotential.

简介：Atwodimensionalplane-stressfinite-elementtypeofanalysisispre-sentedtopredictthebehaviourofgeogridsembeddedinsandunderpulloutloadingconditions.Intheanalysistheinteractionsbetweensoilandgeogridaresimulatedbynon-linearsprings.Thestiffnessesofthespringscanbedeterminedfromsimpletestsinaspeciallydesignedpulloutbox.Theproposedfiniteelement(FE)analysisisappliedtointerprettestresultsfromalargescalepullouttestrig.Thepredictedbe-haviourofthegeogridunderpulloutloadagreeswellwiththeobserveddataincludingtheload-displacementproperties,thedisplacementdistributionalongthelongitudinaldirectionandthemobilisationofthefrictionalandbearingresistance.

简介：从地下的管子的漏能导致被破坏并且引起损坏到邻近的基础结构的基础。包围漏的区域的土壤粒子能从由漏的液体的土壤矩阵被动员，代替，并且甚至洗了，产生虚空或洞。用acoupled的二维的模拟分离元素方法和格子Boltzmann方法(DEMLBM)被用来调查一个土壤床题目的行为到局部地注射的液体，它在一根管子中代表一条漏缝。内部粒子的表面精力的各种各样的价值也被采用为连贯的粒子的机械效果建模。结果建议内部粒子的表面精力极大地关于漏的液体影响床反应，包括开始洞，洞形状和它的进化率的过量压力。

简介：Duetothewideapplicationsofarchesinundergroundprotectivestructures,dynamicanalysisofcircu-lararchesincludingsoil-structureinteractionsisimportant.Inthispaper,anexactsolutionoftheforcedvibrationofcirculararchessubjectedtosubsurfacedenotationforcesisobtained.Thedynamicsoil-structureinteractionisconsideredwiththeintroductionofaninterfacialdampingbetweenthestructureelementandthesurroundingsoilintotheequationofmotion.Byneglectingtheinfluencesofshear,rotaryinertiaandtangentialforcesandassumingthearchincompressible,theequationsofmotionoftheburiedarchesweresetup.Analyticalsolutionsofthedynamicresponsesoftheprotectivearcheswerededucedbymeansofmodalsuperposition.Archeswithdifferentopeningangles,acousticimpedancesandrise-spanratioswereanalyzedtodiscusstheirinfluencesonanarch.Thetheoreticalanalysissuggestsblastloadsforelasticdesignsandpredictsthepotentialfailuremodesforburiedprotectivearches.

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简介：Theinfluenceofinitialstrainstateonthedynamicresponseofanendbearingpileembeddedinisotropicsaturatedsoilisinvestigatedthroughthelinearizedtheoryofsmallelasticperturbationsuperposedonlargelystressedbodies.Thegoverningequationsforsoil,basedonBiot’sporoelasticitytheory,arederivedinthecylindricalcoordinates,andthepileismodeledbyusingtheone-dimensionalelastictheory.Theanalyticalsolutionsofpileimpedance,frequencyresponseofbothtwistangleandtimehistoryofvelocityresponseareobtainedbyusingofseparationofvariablestechnique.Finally,aparametricstudyoftheinfluenceofinitialstrainsonthetorsionalimpedance,twistangle,andvelocityresponseatthetopofthepileiscarriedout.