流-固-土多项耦合六自由度单、双向静动态加载仪研发与应用

发布时间：2018-05-22 11:36

本文选题：海洋土 + 流-固-土耦合　；参考：《中国海洋大学学报(自然科学版)》2016年05期

【摘要】：为研究复合加载模式下三维荷载空间内海洋土变形机理与承载能力,自主研发了能够实现六自由度单、双向复杂加载路径的流-固-土耦合静、动态土工试验仪。该设备能够实现多自由度情况下静力与动力的复杂加载路径试验,能够模拟复杂的海洋环境荷载作用。详细的阐述了设备研发原理、多自由度控制模式与技术参数确定中的若干问题,为日后相关土工试验设备的研制提供了参考价值。初步试验结果表明:该试验设备能够较为准确地研究微观情况下海洋土体的变形规律、破坏机理与极限承载能力;设备中的耦合加载控制方法,能够用于研究复合加载模式下三维荷载空间内海床土体的极限承载能力;文中给出的Plc控制模块、采集模块能够较为准确地提高数据的测量与采集精度。
[Abstract]:In order to study the deformation mechanism and bearing capacity of marine soil in three dimensional loading space, a hydrostatic and dynamic geotechnical test instrument with six degrees of freedom (DOF) and bidirectional complex loading paths was developed. The equipment can realize the complex loading path test of static and dynamic forces under the condition of multiple degrees of freedom, and can simulate the complex loads in marine environment. The principle of equipment research and development, the control mode of multi-degree of freedom and the determination of technical parameters are described in detail, which provides a reference value for the development of related geotechnical test equipment in the future. The preliminary test results show that the test equipment can accurately study the deformation law, failure mechanism and ultimate load-bearing capacity of the marine soil under microscopic conditions, and the coupling loading control method in the equipment. It can be used to study the ultimate bearing capacity of the seabed soil in the three-dimensional loading space, and the Plc control module in this paper, the acquisition module can improve the accuracy of data measurement and acquisition more accurately.
【作者单位】：中国海洋大学工程学院;山东省海洋工程重点试验室;
【基金】：国家自然科学基金项目(50909050) 山东省自然科学基金项目(ZR2009FQ004)~~
【分类号】：P75;TU415

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