RC-masonry combination arch bridge makes rc arch ribs as former spanning structure and falsework of upper masonry's construction. Finally, reinforced concrete and masonry together form arch ring.
它提出了以RC拱肋作为先期的跨越结构和后期高强石砌体砌筑的施工支架，最终由石砌体和RC拱肋共同形成主拱圈的构思。
As a kind of new structure form, the single cavern and double layer tunnel is different from the separated tunnel and double-arch tunnel.
单洞双层隧道作为一种新的隧道形式，不同于分离式隧道和连拱式隧道。
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