某旧桥基桩检测探讨

Discussion on the Detection of an Old Bridge Foundation Pile

桥梁拆除重建时拟利用老桥基桩,但缺少资料可查,已成为重建桥梁工程的普遍问题。以某公路计划拆除某大桥对原基桩进行利用,评判其质量状况,通过某旧桥灌注桩完整性检测(桩长、桩身混凝土质量、桩身混凝土强度、判定或鉴别桩底持力层岩土性状、判定桩身完整性类别),采用了低应变法、钻芯法检测综合判定,为是否旧桩利用提供参考依据。

When the bridge is dismantled and rebuilt, old foundation pile is about to be used, but there is no data available, so it has become a common problem in bridge reconstruction process. A highway is planning to demolish a bridge and make use of the original foundation pile, and evaluating its quality status through an old bridge cast-in-place pile integrity detection (such as: pile length, pile concrete quality, strength of pile concrete, determining or identifying the rock and soil properties of pile bottom bearing layer, determining the pile integrity category). The low strain method and core drilling method were used for comprehensive determination, and it provides reference basis for whether the old pile can be used.