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钉形水泥土双向搅拌桩是一种新型的水泥土搅拌技术,解决了常规水泥土搅拌桩施工中存在的诸多弊端。在申嘉湖杭高速公路试验段采用大直径、钉形、双向搅拌的水泥土搅拌桩处理超过20 m的深厚软土地基获得成功,这一开创性的成果大大拓宽了水泥土搅拌桩的应用前景。通过对比试验发现,在地质条件和填土高度相近的情况下,钉形水泥土双向搅拌桩较常规水泥土搅拌桩具有更好的加固效果。
Spike cement soil two-way mixing pile is a new type of cement soil mixing technology, to solve the conventional cement-soil mixing pile construction of the many drawbacks. The successful application of the large-diameter, nail-shaped and two-way agitated cement-soil mixing piles in deep soft soil over 20 m in the test section of Shen-Jia-Hu-Hang Freeway has greatly expanded the application prospect of cement-soil mixing piles. Through the comparative test, it is found that under the condition of similar geological conditions and filling height, the spike cement-soil two-way mixing pile has better reinforcement effect than the conventional cement-soil mixing pile.