Combined with practical work the construction technology of post-grouting bored pile is introduced and discussed from test pile, construction procedure, pile foundation test and other aspects.
介绍了后压浆钻孔灌注桩的施工工艺，结合工程实例，从试桩、成桩工艺、桩基检测等方面进行了论述，指出后压浆钻孔灌注桩工艺具有承载力高、工程造价低的特。
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.
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。
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.
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。
The tests show that the longer the age of bored piles, the higher the opening pressure of pile end post grouting. However, the age of bored piles has little influence on the final grouting pressure.
注浆试验表明：随着成桩龄期的增加，开塞压力也相应增大，但成桩龄期对终注压力影响不大。
Sometimes, in order to overcome these shortcomings to use bored piles and post-grouting pile, but bored piles are difficult to drilling in sand stratum, drill pipe sticking and dropping often appears;
有事为了克服以上缺点改用钻孔灌注桩和后压浆灌注桩，但灌注桩在砂土地层中也不易钻进，常出现卡钻、掉钻；
The post-pressure grouting bored pile is used in the foundation de…
基础采用底部后压浆钻孔灌注桩体系。
The post-pressure grouting bored pile is used in the foundation de…
基础采用底部后压浆钻孔灌注桩体系。
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