基础工程课程设计

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1、FoundationDesign姓名马德林学号20100193班级2010级土木茅1班西南交通大学土木工程学院2013年5月-12-CONTENTSProblem---------------------------------------------------------------------------------2Design-----------------------------------------------------------------------------------4ChapteroneUnitconversion----------------------

2、-------------------------------4ChaptertwoDesignloadcalculation--------------------------------------------4ChapterthreeGeotechnicaldesigning-------------------------------------------4Step1toStep9Allowablebearingpressuremethod------------------------4Step10Checkingmomentload-----------------------

3、--------------------------8ChapterfourStructuraldesigning------------------------------------------------8PartADeterminerequiredthicknessbasedonatwo-wayshearanalysis--8Checkone-wayshear-----------------------------------------------------9PartBDesigntheflexuralsteel---------------------------------

4、-----------------9ChapterfiveSketchofthedesignedfooting-----------------------------------11Figure2Thicknessandeffectivedepth-----------------------------------------11Figure3Dimensionsandreinforcingsteel-------------------------------------11Figure4Innerblockandouterblock--------------------------

5、------------------12Figure5Structuralshow----------------------------------------------------------12-12-Problem:DesignforPracticeAproposedofficebuildingistobeconstructedatthesitewithageologicprofileshowedinfigure1.Thegroundtableisat5.5ft.Theshallowstrataareverysoft.Thedataforthesestratamaybeusedin

6、foundationdesignwereobtainedfromaseriesin-situtestsandlaboratorytests,andshowedintable1.Inthetable,Suisundrainedshearstrength;ispreconsolidationstress.MediumSand(Dr=60%)0-ft12-ft23-ft27-ftGWT@5.5-ftHighPlasticClay(CH)SiltyClay(CL)VeryStiffSiltyClay(CL)Fig.1geologicsectionfortheconstructionsiteThede

7、signcolumnsoftheproposedofficebuildingwillcarrythefollowingloads:deadverticalloadrange30-100k,liveverticalloadrange20-75k,anddeadloadmomentrange0-50ft-k.Thesecolumnsaretobesupportedonspreadingfootings.Asket