木结构试题1

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1、1•List3ormoreproblemsoftimberconstruction.2.Listthreereasonswhywoodisconsideredasenvironmentallyfriendlybuildingmaterial・3.Supposeyouwanttoconnectasteeltensionrodtoawoodenbeam.Recommendasolutionbasedonthestrengthandtheweaknessofwood・Explainyouranswer.4.List4designchecksyouhavetodowhendesigningabeam.

2、5.Atensionmemberisasfollowing・Pleasecalculatethenetarea(An)ofthismemberwhenyoucheckitstensionstrength.Diametersofalltheboltholesare12mm.4—zt丄--■4+Tt~f-XL—->•・►.100,100]1005「100j6.Pleaseexplainhowtotransfertheforceinsteelbartotimbermembers.7.Pleasegivetheelementnameswhicharedrawninthefollowingfigure

3、.AnswerKeyX171717171234/(7(7/(z/1.answer:(1)Decayofwood(2)Fireretardance(3)Termitecontrol(4)Diffcrcntstrengthindiffcrcntdirection,etc2.answer:(1)Woodproductsbringlesswastesandpollutionthantheothermaterials(2)Woodisatenewableresource(3)Woodisenergyefficient3.answer：Hint:Thesteeltensionrodshoul

4、dpassthroughthewoodenbeamtotransferthetensionintocompression,whichcantakegoodadvantageofwoodhighcompressionstrength.4.answer：ThebendingresistancebearingcapacityTheshearingresistancebearingcapacityThedeflectionThestability5.answer:&=40x185-7x40x12=4040mm26.Pleaseexplainhowtotransfertheforceinsteelbar

5、totimbermembers.7.Pleasegivetheelementnameswhicharedrawninthefollowingfigure.Trj$$(orraftw)RoofsheathingBridgingLoadbearingrrtortorwhPTopwallplateAoorjhwitNngBuBtupboom•■■SdipureBottomwaipt»MWahsheading练习答案一、单选题l.C2.B3.A4.B二、多项选择题1.A,B,C