Research of Dynamic Characteristics and Dynamic Damage Deformation Test of Red Clay

Abstract

论文以动载作用下红粘土动力特性及动态损伤变形试验研究为主题,选取厦门港附近红粘土为试样,利用动三轴仪为主要试验装备,测试试样在呈正弦变化的动态荷载作用下的动力反应,从而研究动态荷载不同频率、不同幅值、试样不同含水率等因素对红粘土的动应力—应变、动变形—作用时间(作用次数)等动力学特性的影响。同时选取动弹性模量为损伤变量,通过研究损伤变量的变化,分析试样在动载作用下的损伤过程,并根据流变模型,建立了动态损伤方程。观测土样的微观结构,采用扫描电子显微镜(SEM),放大500倍和5000倍进行拍照,分析试样在损伤变形过程中微观结构演变特征,从微观上解释动载作用对试样损伤变形的影响机理。主要研究内容如...The deformation test research of the dynamic behavior and damage of the red clay under the dynamic load is selected as the theme of this thesis, the nearby red clay of the Xiamen Port is selected as the test samples, the dynamic tri-axial is used as the main test equipment, so the dynamic response of sample can be tested when the sample is under the dynamic load, then the affect of such factors as...学位:工学硕士院系专业:建筑与土木工程学院土木工程系_结构工程学号:2532007115418

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