城市建设理论研究（电子版）
城市建設理論研究（電子版）
성시건설이론연구（전자판）
ChengShi Jianshe LiLun Yan Jiu
2014年
24期
2801-2803
,共3页
双向水泥土搅拌桩%软基%载荷试验%无侧限抗压强度
雙嚮水泥土攪拌樁%軟基%載荷試驗%無側限抗壓彊度
쌍향수니토교반장%연기%재하시험%무측한항압강도
bidirectional soil-cement deep mixing columns%soft foundation%plate loading test%unconfined compressive strength
针对常规搅拌桩存在的问题，介绍了双向水泥土搅拌桩施工机械和施工工艺。结合工程实例，通过现场抽芯、单桩和复合地基静载荷试验，检测了搅拌桩施工效果。检测结果表明：双向水泥土搅拌桩桩身强度较高，28天无侧限抗压强度均在0.6MPa以上；单桩竖向承载力特征值超过了90kN；单桩复合地基竖向承载力特征值在90kPa以上。双向水泥土搅拌桩有效地解决了软土承载力和沉降问题。
針對常規攪拌樁存在的問題，介紹瞭雙嚮水泥土攪拌樁施工機械和施工工藝。結閤工程實例，通過現場抽芯、單樁和複閤地基靜載荷試驗，檢測瞭攪拌樁施工效果。檢測結果錶明：雙嚮水泥土攪拌樁樁身彊度較高，28天無側限抗壓彊度均在0.6MPa以上；單樁豎嚮承載力特徵值超過瞭90kN；單樁複閤地基豎嚮承載力特徵值在90kPa以上。雙嚮水泥土攪拌樁有效地解決瞭軟土承載力和沉降問題。
침대상규교반장존재적문제，개소료쌍향수니토교반장시공궤계화시공공예。결합공정실례，통과현장추심、단장화복합지기정재하시험，검측료교반장시공효과。검측결과표명：쌍향수니토교반장장신강도교고，28천무측한항압강도균재0.6MPa이상；단장수향승재력특정치초과료90kN；단장복합지기수향승재력특정치재90kPa이상。쌍향수니토교반장유효지해결료연토승재력화침강문제。
In the light of the existing problems of conventional soil-cement mixing piles, construction machinery and construction technology of bidirectional soil-cement deep mixing columns are introduced. Construction effect is measured by coring results and plate loading test of a single pile and composite foundation with a single pile. The result shows that bidirectional soil-cement deep mixing columns have a high strength. Unconfined compressive strength is in the above 0.6MPa. Characteristic value of the vertical bearing capacity of a single pile is in the above 90kN. In the same time, characteristic value of the vertical bearing capacity of composite foundation with a single pile is in the above 90kPa. The bearing capacity and settlement problems of soft soil are solved effectively.
