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湖南益阳市人民法院的大审判厅屋盖采用了组合式单层扭网壳结构。网壳平面尺寸为18×24m,矢高3m,杆件为焊接钢管,节点设计成半鼓半球形。屋面板按网格铺设钢丝网水泥板,板面浇40mm 厚细石混凝土面层以形成组合壳体,施工采用了高空散装,首先定位十字脊线,然后根据扭壳直线成型的特点,确定各节点位置,最后将杆件焊接就位,现屋盏已施工完毕,经现场测试,结构性能符合设计要求,网壳耗钢量为15kg/m~2。
The large judicial hall roof of the People’s Court of Yiyang City, Hunan Province adopted a modular single-layer twist reticulated shell structure. The plane size of the reticulated shell is 18×24m and the height is 3m. The rods are welded steel pipes and the nodes are designed as semi-hemispherical hemispheres. The roof panel is laid with steel wire mesh cement boards by mesh, and the surface of the board is poured with a 40mm thick fine stone concrete surface layer to form a composite shell. The construction adopts high-altitude bulk loading, firstly positioning the cross ridge line, and then determining the respective characteristics according to the straight forming of the twist shell. At the node location, the rods are finally welded in place. The existing housing has been completed. After field testing, the structural performance meets the design requirements and the mesh shell steel consumption is 15 kg/m2.