雨篷計(jì)算實(shí)例

1、雨篷計(jì)算書本工程采納懸梁式雨篷，且板面采納有組織排水。1、雨蓬板計(jì)算（YPB）雨篷板計(jì)算跨度：Lo1=3900mm，Lo2=1700且有3Lo1/Lo2=3900/1700=2故雨篷板可按單向板進(jìn)行計(jì)算，（1）恒荷載標(biāo)準(zhǔn)值計(jì)算20mm厚防水沙漿面層20=kN/m22%的排水坡度1.72%10.34220kN/m2板自重0.1252.5kN/m2板底抹灰0.02200.42kN/m恒載共計(jì)=kN/m2活荷載標(biāo)準(zhǔn)值=kN/m2則荷載設(shè)計(jì)值：gq1.23.641.40.55.068kN/m2取1m寬板帶作為計(jì)算單元，即：b=1000mm則：g+q=m（2）彎矩設(shè)計(jì)值：Mmax1（g）15.0681.

2、721.838qLo28kNm（3）配筋計(jì)算：板厚：h=100mmho=100-20=80mm,重要性系數(shù)取o=2砼采納C30則fc=mm，1=12鋼筋采納HRB400則fy=360N/mm則有：M21.8310620.019sfcbh01.014.3100080s112s0.992ASM1.8310664mm2ys03600.9980fh故受拉鋼筋選配C8200且實(shí)配筋率AS251mm2minbh0.2%1000100200mm2此外：1）雨篷板中散布鋼筋按結(jié)構(gòu)配筋.采納C8200；2）YPL-1、YPL-2、YPL3及L訂交地方需配的負(fù)筋可按結(jié)構(gòu)配筋，采納C8200。2、雨蓬梁計(jì)算梁縱筋采

3、納HRB400，箍筋采納HPB300，采納C40混凝土。（1）YPL-1計(jì)算跨度Lo1=3900mm，梁截面尺寸:bh200mm400mm）荷載計(jì)算恒載標(biāo)準(zhǔn)值：梁底抹灰0.02200.200.08kN/m梁雙側(cè)粉刷（10mm）厚0.40.02170.136kN/m梁自重0.20.4252kN/m雨蓬板傳來的恒載3.641.7/23.094kN/m恒載共計(jì)gk5.31kN/m活載標(biāo)準(zhǔn)值：=2=kN/m荷載設(shè)計(jì)值：g+q=+=kN/m）YPL-1內(nèi)力計(jì)算及配筋：正截面計(jì)算（h040030370mm）1）o116.9673.9213.25kNm882M213.2510620.025sfcbh01.0

4、19.12003701s11s11-20.02520.98722ASM13.246106101mm2采納2ys03600.9873702C12，實(shí)配As=226mmfh配筋率AS2260.305%0.2%h0.2%4000.216%，且大于bh0200370h0370fth1.714000.23%，知足最小配筋率要求。0.45h00.45370fy360斜截面計(jì)算：hwh01100370100270mmhw2701.354b2000.25fbh0.251.019.1200370353.35kNcc0V6.967(3.90.2)112.89kN2故截面知足抗剪要求。且有：0.7ftbh00.71

5、.7120037088.58kNV12.89kN現(xiàn)配C8200，配箍率：svnAsv1250.3s,min0.24ft1.71，滿bs200200fy360足。（2）YPL-2內(nèi)力計(jì)算及配筋b=200mm，h=400mm底部受壓翼緣寬度b計(jì)算（按倒L型）：fbf=111,bS1700-200）283mm662）荷載計(jì)算恒載標(biāo)準(zhǔn)值：梁底抹灰0.02200.10.04kN/m梁雙側(cè)粉刷（10mm）厚0.40.02170.136kN/m梁自重0.20.4252.0kN/m恒載共計(jì)gk2.176kN/m3恒載設(shè)計(jì)值：g1.22.1762.611kN/m由YPL-1傳來的集中荷載：P16.9673.91

6、3.58kN2YPL-2計(jì)算簡(jiǎn)圖內(nèi)力與配筋計(jì)算(l1700mm)M1gl2pl12.6111.7213.581.726.86kNm22VglP2.6111.713.5818.02kN）正截面計(jì)算：先判斷T形截面種類：fcbfhf(h0hf1.014.3283100100)129.5kNmM=m)(37022則屬于第一類T形截面，正截面計(jì)算以下：sM26.861060.0491fcbfh021.014.32833702s1120.0490.052b0.518112s1120.0490.975s22則：AsM26.86106207mm2sfyh00.975360370采納2C12，As226mm2

7、，此中配筋率：As2260.305%bh02003700.2%h0.2%4000.216%,且fth0.451.434000.193%h0370fyh0360370知足最小配筋率的要求3）斜截面計(jì)算：驗(yàn)算截面尺寸hwh01100370100270mm,hw2704，則：b20040.25cfcbh00.251.014.3200370264.55kNV18.02kN且：0.7ftbh00.71.4320037074.07kNV18.02kN，故截面知足抗剪要求,只要按結(jié)構(gòu)配箍筋。現(xiàn)配置C8200，配箍率為：nAsv1250.30.252%sv,min0.24ft0.241.43，sv200200

8、0.095%bsfy360知足最小配筋率要求。（3）YPL-3內(nèi)力計(jì)算及配筋：其截面形式以下：（截面圖）底部受壓翼緣寬度bf計(jì)算（按倒T形計(jì)算）bfmin1l0,bSn11700,2001500567mm，hf100mm331）荷載計(jì)算：恒載計(jì)算：雙側(cè)粉刷0.02170.30.102kN/m自重0.20.4252.0kN/m恒載共計(jì)m設(shè)計(jì)值：1.22.1022.522kN/m雙側(cè)YPL-1傳來的集中荷載：P16.9673.9227.17kN,計(jì)算簡(jiǎn)圖如2下：YPL-3計(jì)算簡(jiǎn)圖內(nèi)力：M1gl2Pl12.5221.7227.171.749.83kNm22VglP2.5221.727.1731.46

9、kN2）正截面計(jì)算：先判斷T形截面種類：fcbfhf(h0hf)1.014.3567100(3701002)259.46kNmM=m，25則屬于第一類T形截面，正截面計(jì)算以下：sM49.831060.04521.014.356737021fcbfh0s1120.0450.045b0.518112s1120.0450.977s22則：AsM49.83106383mm2sfyh00.977360370采納2C16，As402mm2，此中配筋率：As4020.543%bh02003700.2%h0.2%4000.216%,且fth0.451.434000.193%h0370fyh0360370知足最小配筋率的要求3）斜截面計(jì)算：驗(yàn)算截面尺寸hwh01100370100270mm,hw2704，則：b2000.25cfcbh00.251.014.3200370264.55kNV31