By discussing executing process of bored grouting pile, the paper points out reasons and preventive measures of quality problems.
通过钻孔压浆灌注桩施工工艺的论述，指出了产生质量问题的原因及防治措施。
Technology and mechanism of compaction grouting used in bored pile base grouting to enhance the bearing capacity are discussed.
对压密灌浆法用于桩底灌浆提高钻孔灌注桩承载力的工艺和机理进行了探讨。
This paper presents the construction process of pile base grouting for bored pile foundations of Paksey Bridge, in which the selected materials, equipment and construction technology are covered.
介绍帕克西桥钻孔桩基础桩底压浆的施工，包括材料、设备及施工工艺。
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 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。
Effects of grouting on the bearing behavior of bored pile are analyzed with the finite element method in accordance with the test results of large diameter over length piles.
结合大直径超长桩试桩得到的试验资料，应用有限元方法分析了压浆对大直径超长钻孔灌注桩承载性能的影响。
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。
When the bearing stratum at the tip of bored pile is sandy soil stratum, the method of pile tip pressure grouting can effectively improve the bearing capacity of single piles.
泥浆护壁钻孔灌注桩当桩端持力层为砂土层等非岩石层时，通过桩底压密灌浆能有效地提高单桩承载力。
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 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。
The posterior grouting bored pile can greatly improve the pile's bearing performance and increase the pile capacity through the improvement to traditional process.
后压浆钻孔灌注桩可以大大改善桩体的受力性能，提高单桩承载力，是对传统工法的一项重大突破。
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；
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；
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