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 Wysłany: ¦ro 20:07, 12 Sty 2011 Temat postu: microsoft outlook Vibration Detection Based on the |
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Vibration Detection Based on the effective stress of prestressed concrete beam experimental study and finite element analysis
95 (159) :287-311. [9] Liu Hongwei, Zhang, Superficial View. Dynamic Prestress Influence on the Beam [J]. Heilongjiang Science and Technology, 2002,12 (3) :37-39. LIUHW, ZHANGW, ZHUANGHP. AnalysisofDynamicInfluencefromPrestressedBeam [J]. JournalofHeilongjiangInstituteofSci-ence,microsoft outlook, 2002,12 (3) :37-39. [10] Tang Yougang. Advanced Structural Dynamics [M]. Tianjin: Tianjin University Press, 2002. [11] Hao culture. ANSYS Civil Engineering Application [M]. Beijing: China Water Power Press, 2005. FEMandexperimentresearchoneffectivestressofprestressedconcretebeambyvibratingmethodxuMan-yi,p90x workout schedule, SUNXi-ping,Mont Blanc pens, MAJin-b. ) 2 (1.TianjinResearchInstituteforWaterTransportEngineering, KeyLaboratoryofHarbor & MarineStructures.fw, MinistryofCommunications, Tianjin300456, China; 2.NavalUniversityofEngineering, Tianjin300450, China) Abstract: Nowadays, currentstresstestoftheprestressedstmcturehaeendifficulttobesolved. Inthisstudy,timberland portugal, thevibratingfeatureofaunbondedprestressedconcretebeamwasanalyzedwiththevibratingmethod. Throughtheoreticalanalysisandexperimentalstudy, itwasfoundthattheeffectivestiffnessofaconcretebeamwaschangedbyprestressingforce. andtherebythevibrationfrequencyoftheprestressedconcretebeamwaschanged. Thuswecouldgettheeffectivestressfromthevibrationfrequency. Inthispaper, thevibrationfrequencyofaprestressedconcretebeamunderdifferentprestressingforcewasobtainedrespectivelyfromexperimentandcalculationwithfiniteelementmethod,north face outlet, andtheresultsofthosetwomethodswereingoodagreement. Itisdemonstratedthatvibratingmethodcouldbeusedtotesttheeffectivestressofaurrbondedprestressedconcretebeam, whichprovidesreferencetotesteffectivestressofstructures. Keywords: vibratingmethod; unbondedprestressedconcretebeam; effectivestress; finiteelementmethod
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