Experimental Study on Impact Damage Properties of the Sandy Clay Based on the Ultrasonic Detection Technology

Abstract

不同损伤程度的岩土具有不同的声学特性和超声波声学参数,超声波速能综合反映岩土体结构动力特性和动力损伤,在土动力学和岩土工程中发挥着重要作用。本文基于土动力学与弹性波、弹性动力学理论,探讨了超声波在土体中的传播特性和超声波岩土损伤检测技术,并以超声波速作为冲击荷载作用下土体结构损伤演化的主要指标,分析土体冲击损伤特性,计算土体冲击损伤度,为揭示动荷载作用下土体动力损伤演化规律提供科学依据和定量参数。 论文以冲击荷载作用下土体损伤特性为研究主题,开展如下的试验研究: 1.基于超声波的声学特性,研究分析了超声波在土体中的传播特点; 2.研究分析岩土体损伤检测技术的理论及其应用情况,评价使用不同...Geotechnical damage have different acoustic characteristics and ultrasonic acoustic parameters, therefore, the ultrasonic velocity can be integrated to reflect dynamic characteristics and damage of the rock and soil mass plays an important role in soil dynamics and geotechnical engineering. Based on soil dynamics and elastic waves theory, the propagation characteristics of ultrasonic in the soil a...学位:工学硕士院系专业:建筑与土木工程学院土木工程系_岩土工程学号:2532009115149

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