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首页> 外文会议>Proceedings of 2009 international symposium on risk control and managment of design, construction and operation in underground engineering >Applied Research on Soft Ground Treated with High Pressure Jet Grouting Pile
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Applied Research on Soft Ground Treated with High Pressure Jet Grouting Pile

机译：高压旋喷桩处理软土地基的应用研究。

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摘要

In order to determine the grouting method and corresponding technical parameters on the seventh layer of Shanghai stratum (sandy silt and sandy soil with water contained) treated with high pressure jet grouting pile, the on-site tests of single pile and pile groups grouted with ORDINARY TRI-TUBE method, RODIN JET PILE(RJP) method and SUPERJET MIDI(SJM) method have been conducted to compare the treatment effects. As well as the influences by grouting tube lifting method to pile diameter and the drilling direction controllability of inclined drill hole have been studied in this paper. The experimental results indicated that, the pile's 28d strength of RJP and SJM method are higher than that of ORDINARY TRI-TUBE method, but all three grouting methods can achieve 1.5MPa. The diameters of piles are not influenced significantly by grouting tube lifting methods above mentioned, which ORDINARY TRI-TUBE method can achieve 1.5m, and the RJP and SJM method can achieve 2.2m～2.3m. The drill holes gradient can satisfy the overlap request of piles body.
机译：为了确定高压喷射注浆桩对上海地层第七层（含沙的粉砂土和含水的砂土）的注浆方法及相应的技术参数，对普通单桩和桩基进行了常规注浆的现场试验。比较了TRI-TUBE法，RODIN JET PILE（RJP）法和SUPERJET MIDI（SJM）法。研究了注浆管吊装方法对倾斜钻孔的桩径和钻孔方向可控性的影响。试验结果表明，RJP法和SJM法桩的28d强度均高于普通TRI-TUBE法，但三种灌浆方法均能达到1.5MPa。上面提到的注浆管提升方法对桩的直径没有明显的影响，普通的TRI-TUBE方法可以达到1.5m，RJP和SJM方法可以达到2.2m〜2.3m。钻孔坡度可以满足桩体的重叠要求。

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