| 路基溶洞加固的离散元方法数值模拟研究 |
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| 引用本文： | 常明丰,刘国柱,刘勇.路基溶洞加固的离散元方法数值模拟研究[J].路基工程,2011,0(2):64-66. |
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| 作者姓名： | 常明丰 刘国柱 刘勇 |
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| 作者单位： | 长安大学特殊地区公路工程教育部重点实验室, 西安 710064 |
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| 摘 要： | 通过建立含溶洞路基的离散元模型数值模拟了荷载作用下模型的响应,给出了采取加固措施前后组成路基模型颗粒间的接触力分布及位移矢量,监测了溶洞竖向六个位置颗粒的位移变化。结果表明,加固后颗粒的位移明显减小,由0.040cm减至0.014cm为最大减小范围。
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| 关 键 词： | 路基病害 溶洞加固 离散元方法 数值模拟 |
| 收稿时间： | 2019-11-10 |
Study on Numerical Simulation of Karst Cave Reinforcement under Subgrade Using Discrete Element Method |
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| Authors: | CHANG Ming-feng LIU Guo-zhu LIU Yong |
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| Institution: | (Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang＇an University,Xi＇an 710064,China) |
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| Abstract: | The discrete element model of subgrade with karst cave is established and the response of the model under load effect is simulated in this paper.The contact force distribution and displacement vector between grains of subgrade model before and after reinforcement are separately provided.Displacement of grain in 6 vertical positions of karst carve is monitored.The result shows that grain displacement significantly reduced from 0.040cm to 0.014cm after reinforcement,which is also the largest reduction. |
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| Keywords: | subgrade diseases cave reinforcement discrete element method numerical simulation |
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