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随着近年来中国海洋开发的不断深入发展,海洋工程设计时对于海洋土承载能力及循环荷载效应的勘测提出了更高的要求。由于从深水地区回收土样进行室内试验的难度和成本过高,海洋岩土工程设计参数的确定往往依赖于现场原位测试技术。回顾了海洋静力触探技术的发展历程,介绍了一种适用于海相软土的全流触探仪。总结了国内外学者对全流触探仪的理论及试验研究,包括贯入阻力与软土不排水抗剪强度之间的关系、循环贯入试验对重塑土特性的评价以及通过数值模拟得出T型全流触探仪的阻力系数等。最后,对全流触探仪发展提出了展望。
With the deepening development of China’s oceans in recent years, marine engineering design has put forward higher requirements for surveying the bearing capacity and cyclic loading of marine soils. Due to the difficulty and cost of conducting indoor tests for the recovery of soil samples from deep water areas, the design parameters for offshore geotechnical engineering often rely on in situ field testing techniques. Recalling the development of marine static exploration technology, introduced a full-flow exploration instrument suitable for marine soft soil. The theoretical and experimental researches on the full-flow penetrometer are summarized, including the relationship between penetration resistance and undrained shear strength of soft soil, the evaluation of the properties of remodeled soil by cyclic penetration test, and the numerical simulation A T-type full-flow heuristic resistance coefficient. Finally, the prospect of the development of full-flow probe is put forward.