滑带土力学性能及抗滑桩支护斜坡稳定分析  

Mechanical Properties of Sliding Zone Soil and Stability Analysis of Slope Supported by Anti-sliding Piles

作　　者：张兆雷 ZHANG Zhaolei(Jinan Branch of Zhongjiaotongli Construction Co.,Ltd.,Jinan,Shandong 250101 China)

机构地区：[1]中交通力建设股份有限公司济南分公司,山东济南250101

出　　处：《黑龙江交通科技》2025年第4期6-10,共5页Communications Science and Technology Heilongjiang

摘　　要：针对滑带土的基本物理力学特性及抗滑桩位置参数对边坡稳定性的影响问题,通过对106国道崇阳县石城至肖岭段改扩建工程K5+200~K5+700滑带土进行基本物理试验,测定了其粗颗粒含量、含水率、天然密度、液限和塑限等基本物理参数。利用环剪试验,研究了不同法向应力及粗颗粒含量对滑带土剪切性能的影响。在此基础上通过数值方法研究抗滑桩参数对边坡稳定性的影响。数值模拟结果表明,抗滑桩的位置参数对边坡稳定性具有显著影响。当抗滑桩距坡脚距离为3.75 m、桩间距为2D(D为抗滑桩直径)时,边坡的安全系数最大。Regarding the basic physical and mechanical properties of sliding soil and the influence of anti-sliding pile position parameters on slope stability,basic physical tests were conducted on the sliding soil of the K5+200~K5+700 section of the reconstruction and expansion project of the Shicheng-Xiaoling section of National Highway 106 in Chongyang County.The basic physical parameters such as coarse particle content,moisture content,natural density,liquid limit,and plastic limit were determined.Using ring shear tests,the effects of different normal stresses and coarse particle contents on the shear properties of the sliding zone soil were examined.Based on these findings,numerical methods were applied to investigate the impact of anti-slide pile parameters on slope stability.The numerical simulation results showed that the position parameters of the anti-slide piles have a significant effect on slope stability.When the anti-slide pile distance from the slope toe is 3.75 m and the pile spacing is 2D(D is the diameter of the anti-slid pile),the slope safety factor is maximized.

关 键 词：滑带土 边坡稳定性 抗剪性能 粗颗粒 敏感性 

分 类 号：U416.14[交通运输工程—道路与铁道工程]