Based on the reconstruction and expansion project of a channel bridge,a set of substructure reconstruction scheme to reduce the water blocking effect was innovatively proposed.By setting the new cast-in-place platform below the riverbed mud surface,the water resistance ratio was effectively reduced.At the same time,the wedge self-locking connection structure was proposed to ensure the safe and reliable connection between the new platform and the existing pile foundation in the form of penetration.After the completion of the new platform,it would also be used as a working platform for subsequent renovation construction,which saved the cost of temporary measures required by conventional methods.The whole scheme fully combined the reconstruction requirements with the characteristics of the original bridge,which was convenient in construction and has good economy.
reconstruction of channel bridgebackwater effectpile cap sinkingwedge self-locking connection structure
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