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1.文中对有拉杆的双悬臂双主梁门架进行了电子计算机计算分析与实测试验,证明这种新型结构是经济可靠的。与无拉杆主梁系统相比,其梁高减低18.7％,主梁自重减少20％。该机已投入使用。 2.对于现在使用的大车跑偏力对桥架只产生水平弯矩作用的分析方法,证明是不全面的,还应考虑垂直弯矩的作用。 3.现行的动刚度计算方法所得结果与实测数值有较大差别。计算方法有待进一步完善。
1. In this paper, a double-cantilever double-girder gantry with pull rod was calculated and analyzed by electronic computer and tested. It is proved that the new structure is economical and reliable. Compared with the non-tie bar main girder system, the beam height is reduced by 18.7%, the girder deadweight is reduced by 20%. The machine has been put into use. 2. For the present method of analyzing the effect of the running force on the horizontal bending moment of the bridge, it proves to be incomplete and the vertical bending moment should also be taken into account. 3. The current calculation method of dynamic stiffness obtained results and the measured values are quite different. Calculation method needs to be further improved.