山东大学学报 (工学版) ›› 2023, Vol. 53 ›› Issue (5): 92-102.doi: 10.6040/j.issn.1672-3961.0.2023.083
• 土木工程 • 上一篇
李尧,董星,陈厚先,郭张龙,杜旭超
LI Yao, DONG Xing, CHEN Houxian, GUO Zhanglong, DU Xuchao
摘要： 为研究活动门试验中土体变形和破坏规律,采用黄土相似材料,开展不同埋深比(埋深与活动门宽度之比)下的活动门试验,监测不同埋深土体在活动门下降过程中的内部位移和地表位移,结合离散元模型分析土体变形及破坏规律的埋深分界线。试验监测数据表明,随埋深比增大,变形更集中于活动门上方更小范围,土体变形破坏规律存在显著差异;活动门下降过程中裂缝大致沿相对位移等值线发展,其发展模式与砂土活动门试验中剪切带发展规律存在一定差异。试验和离散元模拟结果表明:埋深比2.0~2.5为土体变形及破坏规律的埋深分界线;基于所得土体体积变化特征,提出活动门试验中松动区高度的计算方法。
中图分类号:
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