The paper briefly described the design, construction technology and application effect of combined application of small diameter steel tube pile and consolidation grouting with field cases.
以工程实践为例，简述复杂岩溶地基处理中小口径钢管桩与固结灌浆技术联合应用的设计、施工工艺及应用效果。
Through the project cases the application of steel tube pile in composite foundation is introduced and the mchanism is discussed.
通过对以往工程实例的分析，阐述了常用地基处理方法在不同地质条件下如何合理选用。
So the field pour concrete cased pile with vibrated steel tube mould technology is an effective and economical technology for soil improvement.
研究结果表明：振动沉模现浇混凝土管桩技术是高等级公路软基加固中的高效、经济的新技术。
So the field pour concrete cased pile with vibrated steel tube mould technology is an effective and economical technology for soil improvement.
研究结果表明：振动沉模现浇混凝土管桩技术是高等级公路软基加固中的高效、经济的新技术。
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