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对三角形钢屋架的杆件类型及立柱抗侧刚度因素对屋架的内力影响进行了研究.由于三角形屋架的弦杆制作通常采用整根杆件制作,与腹杆用节点板连接,并支撑于钢立柱上,因此弦杆杆件类型及立柱侧移刚度对屋架内力有一定影响.本文利用MIDAS对某仓库工程三角形屋架进行了4种力学模拟计算,通过对比:设计时,三角形钢屋架的弦杆按梁单元是必要的,同时不考虑立柱抗侧刚度对屋架内力影响.对此类屋架设计本文提出了明确的计算方法,具有较高的实用价值.
The effect of the type of the steel truss and the anti-side stiffness of the column on the internal force of the truss was studied.Because the chord of the triangular truss is usually made of the whole rod, connected with the web of the web and supported by the steel Therefore, the type of chord bar and the lateral stiffness of the column have an impact on the internal force of the roof.In this paper, four kinds of mechanical simulations are carried out on the triangular roof truss of a warehouse using MIDAS. By comparison, The beam element is necessary, and the influence of the lateral stiffness of the column on the internal force of the roof truss is not considered at the same time.This paper presents a clear calculation method for such roof truss design, which has a high practical value.