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质量检验是评价深层水泥搅拌桩施工质量的重要手段,国内其他行业已有很多研究,并制定了相关规范、标准和规定。针对深层水泥搅拌桩性质及特点,以实例说明在水利工程中不同条件和要求下,对深层水泥搅拌桩质量检验时,桩体均匀程度可用轻型动力触探(N10)、小应变动测法和开挖目测来检查;对桩体的直径可通过开挖量测检查;对桩体的长度、缺损性质和缺陷位置,可用小应变动测法来检查;对桩体强度可在桩体上截取试件做无侧限抗压强度试验来检查;对重要工程的地基承载力,可采用载荷试验来检查的正确方法,合理判定深层水泥搅拌桩质量。
Quality inspection is to evaluate the quality of deep cement mixing pile construction an important means of other industries have been a lot of domestic research, and developed relevant norms, standards and regulations. In view of the nature and characteristics of deep cement mixing piles, an example is given to illustrate that under different conditions and requirements of hydraulic engineering, when the quality inspection of deep cement mixing piles is carried out, the uniformity of the piles can be measured with light dynamic penetration (N10) Excavation and visual inspection; the diameter of the pile can be checked by excavation measurement; the length of the pile, the nature of the defect and the location of the defect can be checked by the small strain dynamic test; the strength of the pile can be intercepted on the pile Test specimens to do unconfined compressive strength test to check; for important projects of the foundation bearing capacity, load test can be used to check the correct method to reasonably determine the quality of deep cement mixing pile.