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本文对PG30型铺架机的机臂支座孔进行了结构分析,并对所建立的力学模型采用反弯点法计算了截面内力及强度。电测结果表明,本方法对腹板开孔箱形梁的强度计算是简便适用的。
In this paper, the structural analysis of the arm support hole of PG30 truss was carried out, and the internal force and strength of the section were calculated by using the method of inverse bending point. Electrical test results show that this method is simple and convenient to calculate the strength of box girder with web openings.