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摘要：
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文章阐述了肇庆大桥南主桥桥墩大直径嵌岩钻孔灌注桩施工中 ,用钻取补强孔、清除桩底沉渣、压力灌注水泥浆的方法对桩底砼胶结不良 ,沉渣超标的两根基础桩进行补强 ,取得了较好的效果
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During the construction of large diameter bored cast in situ Concrete piles embedded into rock bed for the abutments of the northern main bridge of Zhaoqing Bridge,two foundation piles with poor cementation of concrete in the bottom and over sediment of scum were remedied and strengthened by drilling reinforcing holes,removing scum from the bottom and pressure grouting of cement grout.Thus,the problem piles were satisfactorily strengthened with good results.
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