本发明提供了一种码头升级改造结构及码头升级改造施工方法，其中码头升级改造结构包括设置于旧码头朝向水域一侧的新建码头，新建码头底部设有多个基桩，旧码头与新建码头之间留有空间，空间内设有多个过渡板，过渡板一端设置在旧码头上，另一端设置在新建码头上，过渡板的后侧面与旧码头之间设有缓冲板，其前侧面与新建码头之间也设有缓冲板，过渡板的下侧面与旧码头和新建码头之间分别设有缓冲垫。本发明提高旧码头升级改造施工效率，缩短施工周期，降低施工成本，减少旧码头因升级改造导致的运营中断时间。

The invention provides a wharf upgrading and reconstruction structure and a wharf upgrading and reconstruction construction method. The wharf upgrading and reconstruction structure comprises a newly-built wharf arranged on the side, facing a water area, of an old wharf; multiple foundation piles are arranged at the bottom of the newly-built wharf; a space is reserved between the old wharf and thenewly-built wharf; multiple transition plates are arranged in the space; one ends of the transition plates are arranged on the old wharf, the other ends of the transition plates are arranged on the newly-built wharf; buffer plates are arranged between the rear side faces of the transition plates and the old wharf; buffer plates are arranged between the front side faces of the transition plates andthe newly-built wharf; and buffer pads are arranged between the lower side faces of the transition plates and the old wharf and between the lower side faces of the transition plates and the newly-built wharf. According to the wharf upgrading and reconstruction structure and the wharf upgrading and reconstruction construction method, the construction efficiency of upgrading and reconstruction of the old wharf is enhanced, the construction period is shortened, the construction cost is reduced, and the operation interruption time caused by upgrading and reconstruction of the old wharf is shortened.