轻钢平台主梁受力和变形试验研究及理论分析

ANALYSIS OF THE STRESS AND DEFLECTION OF A MULTI-SPAN LIGHT GAUGE STEEL FLOORCONTINUOUS MAIN-BEAM WITH TESTING AND THEORETICAL METHODS

应用结构试验方法和理论分析方法研究了轻钢结构中平台主梁的受力和变形,获得了连续3跨轻钢平台工字型主梁中跨跨中截面挠度计算公式。依据不同的条件,借助标准有限元通用程序对理论公式和试验公式进行了验证分析,揭示了两种研究方法结果形成差异的原因。研究结果对新结构的设计和在役结构的使用监控有参考价值。

The stress and deflection of the continuous main-beam in a light steel structure floors are studied, by means of structure test methods and theory a three-span method. The actual deflection formulas for the middle section of a three-span continuous steel beam are obtained. Making use of standard FEM programs, the theoretical and testing formulas are verified. The causes of differences by two researching methods are also revealed. This research has valuable information on designing new structures and supervising old structures in service.