預應力積成材的承載能力研究.pdf

1、北京交通大學碩士學位論文預應力積成材的承載能力研究姓名：馬佳申請學位級別：碩士專業(yè)：防災減災工程及防護工程指導教師：楊慶山201106ABSTRACTABSTRACT：TraditionalcompositetimbcrproductssuchasplywoodaJld西uedl鋤inatedwoodadoptthepfincipleofinte莎ationwimveIleerTheyareusedin如mitureaIldbuildi

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5、woodcanbefeused懿themwmaterialofPLSL，a11dtllecmdewoodwillbeconSeⅣedandmecostmaybe10weredThere向re，bydetenniningtheinnuenceofm勾orpar鋤eterstosnldymemechanicalpropertiesofPLSLwillbeproVidedwitllanimponalltr01ebotllin也emeoreti

6、calanden百neeringfieldsNoIllinearbuckliI培觚alySisbyfimteelementso腳areANSYSandstaticeXperim饑talresearcharebom印pliedinnlisp印ert0studymeloadbe撕ngc印ac時andⅡledefonIlatiQncapacityofPLSLA10tofworkhasbeeIldonetofindoutmemajorparam

7、eterswhiCh百vesmebiggestefreCtFinallysomerecommendatiollswillbeconcludedinordertoguidemeeIl百ne耐ngdesi印Firstly，the觚alysisof10adbe撕ngcapacityofmesimplysupportedplatelnlderinsidecompressionisdiscussedThedistributionofim鋤alfo

8、rces，failuremodeand10adbe撕ngcapacityhaVebeenconcludedbychall百ngmegeometryofthemodelThelargeroftheheight—widmratio，thegreatert11etendellcyt0instabilityfailure，andmorestrengmofthematerialcaIlnotbe如11yexploitedSecondly，theV

9、撕ationsofultimatebearingloadisdet哪linedⅡ1roughaseriesofparametricanalySis，aIldthellthemechaIlicalpropeniesofPLSLisdiscusseddeeplyThepar鋤eterSincludethema嘶tudeofpre—s仃ess，medi鋤eter鋤dthearrangementofsteelwires，theshapeandt