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1、工字钢各部件验算表纵、横向程度杆承载验算表横向程度杆(以长杆为对象)纵向程度杆(以三跨为对象)算简图荷载q=0.775(1.20.25+1.4X3)=3.49kNmP=3.490.51.7=2.97kN弯强度Mmax=3.490.62/2=0.63kNmMmax=O.2132.971.55=0.98kNm=0.63106/5080=124Nmm2f=205Nmm2=0.98X106/5080=193Nmm2f=205Nmm2挠度W=(41.10.62-1.13+3X0.63)1093.490.6103/(242.0610512.19104)=3.13mm1400=1700400M.25mmW=
2、1.6152.971031.553X109/(1002.0610512.19104)=7.Hmm1150=1550150=10mm立杆、连墙件和扣件、顶板和根底验算表主楼单立杆局部(架高28-50m)主楼双立杆局部(架高0-28m)立杆稳定验算立杆计算截面以上架高H0=50-28=22m立杆计算截面以上架高H0=50m恒载规范值NGK=Ho义(gk1+gk3)+n11agk2NGK=22(0.1081+0.0768)+21.55X0.3891=6.29kNNGK=50(0.1081+0.0768)+21.550.3891=12.76kN活载规范值NQK=n11aqk=21.551.65=5.1
3、2kNN=12X(6.29+5.12)=13.69kNN=1.2(12.76+5.12)=21.46kN风荷载规范值w=o.7zswoWK=O.71.791.30.35=0.57kNm2风载产生弯矩设计值MW=O.12XWKX1aXh2MW=O.120.571.551.82=0.34kNm稳定验算0.9X(NA+MWW)frmx13.69103/(0.24X489)+0.34X106/5080=183.58Nmm2205(0.9XI.1705)=194.6Nmm221.46103/(0.24X2X489)+0.34X106/5080=158.36Nmm2205(0.9X1.1705)=194.
4、6Nmm2连墙件稳定验算风荷载产生轴向力设计值New-14XWKXAwNew=1.40.573.68.1=23.27kN脚手架平面外变形产生的轴向力N0=5kN连墙件轴向力设计值N1=NeW+NON1=23.27+5=28.27kN连墙杆的计算长度1o=1.1+0.75=1.85m=1850mm长细比=1oi=185015.8=117.09轴心受压构件稳定系数2二0.47【建筑施工手册表5-22128.27X103/(0.472489)=61.5Nmm2205/1.5607=146Nmm2扣件抗滑验算N1WRCI按直角扣件计:Rc=8.OkN/个128.27KN48.0=32kN地基承载力验算
5、立杆底座承载力验算NWRb【切除座承载力度步值Rb=40kg不作此项验算21.46KN40kN东西两侧回填土地基承载力验算N/AdWkXfkI按回填k=0.4Ad=1550.4=0.62m2fk=10tm2=98kNm2不作此项验算21.46/0.62=34.61kNm20.498=39.2kNm2南北两侧顶板地基承载力验算NAdIAd=1550.4=0.62m2按设计提供数据。J=14X活载+1.2X恒载=145+1.26=14.2kNm2不作此项验算21.46/0.62=34.61kNm214.2kNm2由表知:1、立杆承载最小平安系数(194.6-183.58)/194.6100%=5.68%5%;2、回填土承载最小平安系数(39.2-34.61)/39.2100%=11.71%5%;