2025年 01期

Stability Analysis on Slopes Reinforced by Using Anti-slide Piles Considering Soil Arching Effect Between Piles

摘要(Abstract):

针对抗滑桩加固边坡稳定性的已有研究并未考虑由桩间土拱效应引起的土体主应力旋转对边坡稳定性影响的不足,基于由桩间土拱效应引起主应力旋转的土压力统一表达式以及抗滑桩抗滑力的完善计算公式,修正抗滑桩加固边坡稳定性的三维旋转破坏机制,并基于修正后的机制分析边坡的安全系数和滑动面。结果表明:相对于已有研究,当考虑桩间土拱效应所引起的土体主应力旋转时,所得边坡的安全系数更大;土体的性质与土体的内摩擦角、黏聚力有关,当内摩擦角、黏聚力增大时,边坡的安全系数增大,边坡的最深滑动面位置随着内摩擦角的增大而逐渐变浅,随着黏聚力的增大而逐渐变深;当边坡的宽高比与坡角增大时,边坡的安全系数减小,抗滑桩的最有效安装位置更接近坡顶。

关键词(KeyWords): 边坡稳定性;三维旋转破坏机制;抗滑力;土拱效应;主应力旋转;安全系数;

基金项目(Foundation): 国家自然科学基金项目(52008268,52378357);; 辽宁省自然科学基金项目(2022-BS-195);; 教育部“春晖计划”合作科研项目(HZKY20220416);; 辽宁省教育厅高校基本科研项目(JYTMS20231608);; 沈阳市优秀中青年科技人才项目(RC230805)

作者(Author): 赵子豪,张海旭,杜威,吴凤元

DOI: 10.13349/j.cnki.jdxbn.20241119.001

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