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一、前 言 设计无支架吊装双曲拱桥,当校核在吊装过程中拱肋的强度时,常感到计算工作量很大,花费时间和精力很多。对跨径较大,形状较复杂的箱形(或工字形)拱肋,当较核其偏心受压应力时,常需做大量的重复运算,感到非常麻烦而且容易出错。我们为我区某大桥拟将设计为1孔90～100米大跨径双曲拱桥的方案,编制了一个用国产DJS—6机计算箱形(或工字形)拱肋偏压应力的通用源程序,取得了较满意的计算成果。
I. Preface Designing a double-headed arch bridge without a stand, when checking the strength of the arch rib during hoisting, it often feels that the calculation workload is heavy and it takes a lot of time and energy. For larger and more complicated box-shaped (or I-shaped) arch ribs, it is often troublesome and error-prone to do a lot of repetitive calculations when the core is under compressive stress. We plan to design a bridge for our district as a 90-meter long 100-meter double-span arch bridge program, the preparation of a domestic DJS-6 machine box (or I-shaped) arch rib stress universal source Program, made a more satisfactory calculation results.