Research on mechanical property and engineering application of cable with high constant resistance and large deformation

Inrecentyears,theintensityandfrequencyoflandslidegeologicaldisastershavebeenincreasing yearbyyear.Intheprocessoflandslideoccurrence,thetraditionalprestressedanchorcablecannotresist thelargedeformationofrockandcauseproblemssuchasbreakingandfailure.Inresponsetotheabove problems,threedifferenttypesofhigh-resistancelargedeformationanchorcables(NPRanchorcables)have beenindependentlydeveloped.Itscorestructureconsistsofaconstantresistancedeviceconnectedwitha traditionalanchorcable.Then,throughthefieldstatictensiletest,itisconfirmedthatthecablecanprovidea maximumworkingresistanceof850kNandalargedeformationof2000mm.Secondly,usingSTATICand
GENERALquasi-staticanalysismethodinABAQUS,thenumericalsimulationanalysisofthestress-strain characteristicsoftheconstantresistancedeviceunderstatictensioniscarriedout.Theanalysisresultsprove that the NPR anchor cable stretching process is a process of constant resistance and energy absorption.Finally,throughfieldapplication,itisverifiedthattheNPRanchorcablestructurecanbedeformedgreatlywiththeinstabilityoftheslope,whichavoidsthetraditionalanchorcablebeingbrokendueto largedeformation.Itachievesthegoalofintelligentintegrationoflandslidehazardprevention,monitoringand forecastingandprovidesascientificbasisforreasonablyexplainingtherelationshipbetweenthelawoflandslidemigrationandthemonitoringandearlywarningcurve.