... 板箱梁slab box beam 主梁截面girder section 中等(30～50米)的主跨跨径范围medium range of main span ...
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welding box-section crane girder 焊接箱形吊车梁
Following the process of construction, considering the worst loads, according to the assumption of plane section, the steel girder alone and the composite girder are computed respectively.
按照实际施工过程，考虑最不利计算荷载，根据平截面假定，分别对钢梁单独受力和钢-混凝土组合梁两种工况进行计算。
The structure features of bearing column girder transfer floor such as large section and complicated mechanical behaviors are introduced, which realize the transfer of structural axes.
介绍了托柱梁式转换层结构实现了上下层结构柱网改变、截面大、结构受力复杂等结构形式特点；
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