梯形鋼屋架鋼33米課程設(shè)計(jì)計(jì)算書

1、土木工程專業(yè)鋼結(jié)構(gòu)課程設(shè)計(jì)1鋼結(jié)構(gòu)課程設(shè)計(jì)鋼結(jié)構(gòu)課程設(shè)計(jì)－、設(shè)計(jì)資料1、已知條件：梯形鋼屋架跨度33m，長(zhǎng)度120m，柱距6m。屋架鉸接于混凝土柱上，屋面采用單層彩色鋼板波形瓦，屋面坡度i＝110。屋面活荷載標(biāo)準(zhǔn)值為0.7kNm2，屋架鉸支在鋼筋混凝土柱上，上柱截面為400mm400mm，混凝土標(biāo)號(hào)為C20。鋼材采用Q345B級(jí)，焊條采用E50型。2、屋架計(jì)算跨度：Lo=33－20.15=32.7m，3、跨中及端部高度：端部高度：h`=

2、1900mm（軸線處），h=1915mm（計(jì)算跨度處）。屋架的中間高度h=3400mm，屋架跨中起拱按Lo500考慮，取60mm。二、結(jié)構(gòu)形式與布置屋架形式及幾何尺寸見圖1所示，支撐布置見圖2所示。圖1屋架形式及幾何尺寸土木工程專業(yè)鋼結(jié)構(gòu)課程設(shè)計(jì)3③全跨屋架及支撐自重屋面板重半跨屋面活荷載全跨節(jié)點(diǎn)屋架及支撐自重：F3=0.451.21.56=4.86kN半跨大型屋面板重及活荷載：F4=(1.40.120.71.4)1.56=10.33k

3、N3.內(nèi)力計(jì)算本設(shè)計(jì)采用程序計(jì)算桿件在單位節(jié)點(diǎn)力作用下各桿件的內(nèi)力系數(shù)，見表1。內(nèi)力系數(shù)（F=1）第二種組合第三種組合桿件名稱全跨①左半跨①右半跨②第一種組合F①F1①F2②F1①F2③F3①F4②F3①F4③計(jì)算桿件內(nèi)力（KN)AB000.010.000.000.160.000.260.26BCCD11.358.493.45631.39584.54501.99281.38151.20631.39DEEF18.1913.086.2510

4、11.89928.19816.31437.36260.941011.89FGGH21.5314.628.461197.691084.51983.61495.40336.291197.69HJ22.3613.9810.251243.861106.601045.50483.41387.071243.86上弦IJJK22.7314.3910.21264.451127.84725.05496.03139.131264.45ab6.334.941

5、.83352.13329.36278.42162.2381.89352.63bc15.3611.34.98854.46787.96684.44375.90212.65854.46cd20.2114.147.431124.261024.84914.93475.78302.471124.26de22.1214.449.391230.511104.721022.00493.98363.541230.51下弦ef21.2311.6811.681

6、181.001024.571024.57417.82417.821181.00aB11.348.663.27630.83586.93498.65285.72146.49630.83Bb8.816.472.87490.09451.76392.79215.31122.32490.09bD7.555.232.84420.00382.00342.85176.39114.66420.00Dc5.393.392.44299.84267.08251.

7、52117.0592.51299.84cF4.232.252.43235.31202.88205.8381.2685.91235.31Fd2.620.882.13145.75117.25137.7237.0669.35145.75dH1.510.222.1284.0055.6693.992.5863.0293.9950.41He0.291.251.8916.139.0942.3430.7050.4127.55115.74eg1.533.

8、42.2885.11115.7422.7096.1950.2550.52151.44gK2.164.072.32120.16151.4446.78116.9448.1148.11斜腹桿gI0.490.540.0627.2628.0818.2516.631.1328.08Aa0.550.54030.6030.4321.5916.963.0130.60CbEc10.99055.6355.4739.2531.045.4755.63豎桿Gd0.