活木桩生态护坡结构设计与参数优化  

Design and Parameters Optimization of Ecological Slope Protection Structure based on Live Stakes

作　　者：王云[1] 付伟[1] 吴万平[1] 何斌[1] 阮艳彬[1] 

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉市430056

出　　处：《公路》2015年第6期228-234,共7页Highway

摘　　要：针对路基边坡浅表层滑塌防治问题,优化设计出一种基于生态固土保湿的活木桩骨架植草护坡结构,采用数值方法,分析了该结构在不同桩参数、坡参数条件下边坡稳定性变化特征。计算表明,桩长和间距对固坡影响显著,桩径和植入角在合理区间内不敏感,护坡效果与坡率正相关、与坡高负相关。对活木桩相关技术参数优化得出,最优桩长为2.0-3.0m,最佳桩径为7.0-15.0cm,最优间距为2.0m左右,最优植入角与坡面近似垂直,最优坡率为1.0∶1.0-1.0∶1.5。Regarding to protection structure based the shallow slumping of embankment slope, a new type of ecological slope on live stakes has been designed. Numerical simulation method is used to analyze the slope stability variation in different stake structure and slope conditions. The calculation results indicate that slope reinforcement effect is significantly affected by the pile length and spacing, while is not obviously impacted by the pile diameter and implant angle within a reasonable range, and is positively correlated with the slope ratio and negatively correlated with the slope height. After optimization of parameters of the ecological slope protection structure, it is obtained that the optimal pile length ranges from 2.0 to 3.0 m, optimal pile diameter from 7.0 to 15.0 cm, optimal spacing is about 2. 0m, the optimal implanted angle is nearly perpendicular to the slope surface and the optimum slope ratio is from 1.0 ： 1.0 to 1.0 ： 1.5.

关 键 词：道路工程 边坡防护 SLOPE 活木桩 稳定性 浅层滑动 

分 类 号：U417.12[交通运输工程—道路与铁道工程]