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Abstract: Concrete box girder structure has the advantages of integrity, high strength, good appearance,and there is a large space under the bridge. The present application in a large overpass is increasingly widespread. However, the box structure is totally casted and construction across the

bridge is also difficult, so the demand of the support system is higher, and requires well-designed bent and templates to ensure the construction quality of the box. The thesis researches on the inside and outside of the box, the mold design and construction are also explored. ¹Ø¼ü´Ê:ÏäÁº;Ä£°å;Ê©¹¤

Key words: box; template; construction

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