A safe gird (6) for operation is arranged on the upper beam (2).
作业用安全栏(6)设置于上梁(2)。
This beam bears the whole weight of the upper floor.
这根大梁承受了上面那一层的全部重量。
This beam bears the whole weight of the upper floor.
这根大梁承受了上面那一层的全部重量。 。
Therefore, the upper bridge with simply supported continuous beam structure more and more.
因此，桥梁上部采用先简支后连续梁结构越来越多。
Therefore, the upper bridge with simply supported continuous beam structure more and more.
因此，桥梁上部采用先简支后连续梁结构越来越多。
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