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一、前言工业厂房中,吊车梁是主要承重结构之一。为了传递横向水平荷载和保证吊车梁的稳定性及刚度,常设置上、下翼缘水平支撑及垂直支撑,因而吊车梁系统实际上为一空间体系。以往为了简化计算,一般均按平面结构考虑,而不计及空间作用。分析表明,这样处理的结果,有时将导致某些构件或杆件的内力计算值偏低,造成不安全。例如在边列,繁重工作制的吊车梁,当跨度等于或
I. INTRODUCTION In industrial plants, crane beams are one of the major load-bearing structures. In order to transmit lateral horizontal loads and ensure the stability and stiffness of the crane beam, horizontal support and vertical support are usually set on the upper and lower flanges, so the crane girder system is actually a space system. In the past, in order to simplify the calculation, the plane structure was generally taken into account, irrespective of the space effect. The analysis shows that the results of such processing will sometimes lead to low calculated values of internal forces of certain components or rods, resulting in insecurity. For example, in the side column, a heavy duty crane beam, when the span is equal to or