干湿循环对压实红黏土动强度与动模量影响研究OA
Study on Effect of Dry and Wet Cycle on Dynamic Strength and Dynamic Modulus of Compacted Red Clay
采用自制一次成型模具制备压实度分别为90％、93％和96％的三轴试样,自制干湿循环试验装置对试样进行喷雾加湿和暖风干燥,定量模拟现场路基土含水率变化过程获得不同湿度和不同干湿循环次数的试样,通过常含水率动三轴试验测试其动强度与动模量变化规律.结果表明:累积应变随振次的变化分为塑性安定型、临界型和破坏型;临界动应力和最大动弹模随压实度的降低而减小,且减小幅度逐渐增大,随含水率的增大压实度的影响减弱;临界动应力和最大动弹模随含水率的增大而减小,临界动…查看全部>>
Triaxial samples with a compaction degree of 90％,93％and 96％were prepared using a self-made one-time molding mold,and the samples were subjected to spray humidification and warm air drying with a self-made dry and wet cycle test device.The samples with different humidity and different dry and wet cycles were obtained by quantitative simulation of the change process of subgrade soil moisture content on site.The change law of dynamic strength and dynamic modulu…查看全部>>
刘峥嵘;李慧丽;刘维正;罗元军;黄轩嘉
湖南省衡永高速公路建设开发有限公司,湖南衡阳 421600湖南省交通规划勘察设计院有限公司,长沙 410203中南大学土木工程学院,长沙 410075湖南省衡永高速公路建设开发有限公司,湖南衡阳 421600中南大学土木工程学院,长沙 410075
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红黏土湿度变化干湿循环交通荷载三轴试验临界动应力动弹性模量
red claychange of humiditydry and wet cycletraffic loaddynamic triaxial testcritical dynamic stressdynamic modulus
《路基工程》 2024 (4)
48-54,7
国家自然科学基金资助项目(52078500)湖南省自然科学基金(2019JJ40344)
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