arrangement of beams

The numerical results show that the travelling wave effect has significant influence on the long span arch bridge, the arrangement of bracing beams is sensitive to stability.

分析表明，地震行波作用对大跨径拱桥影响很大，横撑设置对稳定性敏感。

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For beams, which have different requirements on cracking control under the serviceability state, further research should be taken to decide the amount and arrangement of the longitudinal distributed reinforcement quantitatively.

对于在不同使用条件下，抗裂度要求不同的钢筋混凝土梁，有必要通过进一步的研究，定量地确定梁腹纵向构造钢筋的数量和布置方式。

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