连栋互插式温室结构的优化设计

Structural Optimal Design of Mutual Insert Multi-span Greenhouse

为提高连栋互插式温室的抗风、雪荷载能力,以及节省单位面积的用钢量,以其主要构件——天沟和钢管为研究对象,对连栋互插式温室结构进行优化设计。结果表明,同荷载、同尺寸的有沟槽天沟比无沟槽抗弯性能好;在相同压力作用下,钢管插入角度越大,杆件越稳定;在相同拉力作用下,插入角度越大,杆件稳定性越差,在钢管底部安装弯头,可以提高温室的抗拔和抗压性能。

For enhancing the windproof and snowproof capability of mutual inserted multi-greenhouse,and saving the steel volume per unit area, the mutual insert multi-span greenhouse structure was optimized with cullis and steel tube of mutual inserted multi-greenhouse as research object. The test results indicated that the groove cullis＇ capacity of resisting bent was better than the same parameter non-groove cullis under the same loads. The steady of pole under the same loads was better when inserting angle was bigger,but the conclusion was contrary on the same pull power. For improving the capability of resisting pull and press of greenhouse, the syphon on the bottom of steel pipe might be installed.