Study on Application of the Post Grouting Bored Pile in the Gravel Layer
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摘要: 灌注桩施工时对土层产生扰动,使桩侧摩阻力和桩端阻力显著变小,为提高单桩承载力,可通过对灌注桩采用后注浆技术减少沉降。工程实例表明,在卵石层中,该技术能够有效地提高单桩的承载力,节约造价,但是对注浆的工艺应进行分析,保证注浆的效果。Abstract: Bored pile construction will produce disturbance to the soil layeres which will reduce the pile side friction power and end friction power. Post grouting technology is used to improve the bearing capacity of pile and reduce settlement. According to an engineering example, the post grouting technology is indicated to be effective to improve the bearing capacity of a pile and reduce the cost. But understanding about the construction technology of the post grouting is needed to ensure the good results.
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