灌注桩后注浆指灌注桩成桩后一定时间，通过预设于桩身内的注浆导管及与之相连的桩端、桩侧注浆阀注入水泥浆，使桩端、桩侧土体（包括沉渣和泥皮）得到加固，从而提高单桩承载力，减小沉降。
采用灌注桩后注浆技术，既可确保桩基施工质量，又能提高单桩承载力，极大地发挥桩基承载的潜力。
The application of post-grouting technique for cast-in-situ pile could not only ensure the construction quality, but also raise the bearing capacity of each pile.
桩端后注浆灌注桩单桩合理注浆量与承载力的计算成为工程界关注的主要问题之一，尚无设计规程可循。
The most interested problems of the design of post base-grouted bored pile are the estimate of the quantity of grouting and the bearing capacity.
结合实际工程，对嵌入卵石层钻孔灌注桩后压浆设计、施工中后压浆方法的选择、注浆量的确定、后压浆桩的承载力计算、后压浆在超长桩中的应用等进行了研究。
Based on actual projects, it carries out research on the choice of post-grouting method, grouting quantity and bearing capacity of bored pile, and the application of post-grouting in super-long pile.
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