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TZ(300x300)计算书1.梯板:L=2800mmt=120mmA=150mmB=260mma:梯板恒载:cos𝛼=𝐵√𝐴2+𝐵2=0.871)踏步板重:G1=γ(𝑡cos𝛼+𝐴2)=25x(0.120.87+0.152)=5.3kN/m22)面层做法G2=γ(𝐴+𝐵𝐵)=10x(150+260260)=1.3kN/m23)下20厚水泥砂浆G3=𝛾3𝑥0.02cos𝛼=0.45kN/m2梯板恒载:5.3+1.3+0.45=7.05kN/m2活载:3.5kN/m2传于梯梁的线荷载:0.5x(1.2x7.05+1.4x3.5)x2.8=18.71kN/mb:平台板恒载:26x0.12+20x0.02=3.52kN/m2活载:3.5kN/m2传于梯梁的线荷载:0.25x(1.2x3.52+1.4x3.5)x2.3=5.25kN/m传于平台梁的线荷载:0.25x(1.2x3.52+1.4x3.5)x2.4=5.47kN/mb:梯梁荷载梁上无墙,墙自重为0自重:0.2x0.4x26=2.08kN/m梯梁线荷载:(18.71+5.25+1.2x2.08)=26.46kN/m梯梁传于梯柱的集中荷载N1=2x0.5x26.46x2.4=63.50kNb:平台梁荷载墙自重:0.3x10x4.5=13.5kN/m自重:0.3x0.4x26=3.12kN/m平台梁线荷载:5.47+1.2x(13.5+3.12)=25.41kN/m平台梁传于梯柱的集中荷载N2=2x0.5x25.41x2.3=58.45kNb:梯柱荷载N=N1+N2=63.50+58.45=121.95kNl0=1.25l=1.25x6000=7500mml0/b=7500/300=25查《混规》表6.2.15得φ=0.625梯柱配筋纵筋8C16As=1608mm2N=0.9φ(𝑓𝑐𝐴𝑐+𝑓𝑦′𝐴𝑠′)=0.9x0.625x(14.3x300x300+360x1608)=1049.55kN121.95kN计算得梯柱计算满足规范要求
本文标题:梯柱计算
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