钢结构屋架课程设计

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1、~~陕西广播电视大学 课程设计 课程名称：钢结构 分校(工作站)：               专业：指导老师：学号：~~~~~学生姓名：~~~~~目录1、设计资料··········································································································12、结构形式及布置··············································································

2、··················13、荷载计算·········································································································33.1永久荷载设计值·····························································································33.2可变荷载设计值·······························

3、······························································33.3荷载组合········································································································34、内力计算·······························································································

4、·········35、截面选择········································································································~~~~~45.1上弦杆截面选择·····························································································45.2下弦杆截面选择····································

5、·························································45.3腹杆截面选择·································································································54、节点设计········································································································9

6、6.1下弦节点设计·································································································96.2上弦节点设计·······························································································147、附图···························································

7、·············································16~~~~~1、设计资料2.1某车间，长240m，跨度27m，柱距6m，车间内无吊车、无天窗、无振动设备。采用梯形钢屋架，1.5×6m预应力钢筋混凝土大型屋面板（1.4kN/m2），二毡三油加绿豆沙防水层（0.4kN/m2），20mm厚水泥砂浆找平层（0.4kN/m2），卷材屋面，屋面坡度i=1/10，屋架简支于钢筋混凝土柱上，混凝土强度等级C20，上柱截面400×400mm。钢材选用Q235B，焊条采用E43型。屋面活荷载标准值0.70kN/m2。2.2

8、屋架计算跨度2.3跨中及端部高度：设计为无檩屋盖方案，采用平坡梯形屋架，端部高度中部高度（为）。2、结构形式与布置屋架形式及几何尺寸如图