| 梁建涌.复杂环境下高土石坝沥青混凝土心墙力学性能研究[J].江西水利科技,2019,(2): |
| 复杂环境下高土石坝沥青混凝土心墙力学性能研究 |
| Study on mechanical properties of asphalt concrete core wall of high earth-rock dam in complex environment |
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| DOI： |
| 中文关键词: 复杂环境 土石坝 沥青混凝土心墙 剪切力学行为 |
| 英文关键词: Complex environment Earth-rock dam Asphalt concrete core wall Shear mechanical behavior |
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| 中文摘要: |
| 为了探究沥青混凝土心墙在复杂地质环境下的力学行为，以室内试验为基础，开展了沥青混凝土在两种剪切角度、三种试验温度及五种应变速率下的剪切力学性能研究.通过试验分析，得到了复杂环境下剪切应力-温度-应变速率-角度四者的相关关系，结果表明：当剪切角度、温度及速率相同时，沥青混凝土的剪切应力-应变曲线呈三阶段变化特征；当角度和速率相同时，温度越高，沥青混凝土的剪切应力越低而应变越大，即有呈弹性向塑性变化的趋势；当温度和剪切速率相同时，角度越大，剪切应力越小；相同剪切角度、温度时，剪切应力随剪切速率增大均呈幂函数型增长. |
| 英文摘要: |
| In order to investigate the mechanical behavior of asphalt concrete core wall in complex geological environment，based on laboratory tests，the shear mechanical properties of asphalt concrete under two shear angles，three test temperatures and five strain rates were studied.Through experimental analysis，the correlation of shear stress-temperature-strain rate-angle under complex environment is obtained.The results show that the shear stressstrain curve of asphalt concrete shows three-stage change characteristics when the shear angle，temperature and rate are the same.When the angle and rate are the same，the higher the temperature is，the lower the shear stress and the greater the strain of asphalt concrete are.The trend of elasticity to plasticity changes；when the temperature and shear rate are the same，the larger the angle，the smaller the shear stress；when the same shear angle and temperature，the shear stress increases exponentially with the increase of shear rate. |
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