CAJ | 학술논문

针对工程实践中涉水边坡抗滑桩设计技术规范欠缺、计算模型过于简化等问题，采用强度折减拉格朗日差分法模拟分析水位骤降速度、水深坡高比、抗滑桩桩位等因素对涉水边坡抗滑桩加固效果的影响。结果表明：库水位骤降速度越大，抗滑桩加固后的边坡安全系数越小；与抗滑桩加固前相比，抗滑桩加固后水深坡高比与边坡安全系数的关系发生了较大变化，应计算最大库水位骤降速度工况下不同水深坡高比对应的边坡安全系数，取其中最小的边坡安全系数作为边坡稳定性判别依据；库水位骤降条件下，抗滑桩布设的位置对边坡加固效果具有较大影响，可根据不同桩位条件下的水深坡高比与边坡安全系数的关系曲线确定合理桩位。
침대공정실천중섭수변파항활장설계기술규범흠결、계산모형과우간화등문제，채용강도절감랍격랑일차분법모의분석수위취강속도、수심파고비、항활장장위등인소대섭수변파항활장가고효과적영향。결과표명：고수위취강속도월대，항활장가고후적변파안전계수월소；여항활장가고전상비，항활장가고후수심파고비여변파안전계수적관계발생료교대변화，응계산최대고수위취강속도공황하불동수심파고비대응적변파안전계수，취기중최소적변파안전계수작위변파은정성판별의거；고수위취강조건하，항활장포설적위치대변파가고효과구유교대영향，가근거불동장위조건하적수심파고비여변파안전계수적관계곡선학정합리장위。
Aiming to the problems of design specifications deficiency and calculation model oversimplification for anti-slide pile at riverside slope, the shear strength reduction method based on Lagrangian difference technique was applied to simulate the reinforcement effect of anti-slide pile under water plummeting condition. The influencing factors include the speed of water level plummeting, the ratio of water depth to slope height, and the location of the anti-slide pile. Research results show that, the larger the speed of water lever plummeting, the smaller the slope safety factor, and the relationship between the ratio of water depth to slope height and the slope safety factor changes significantly due to the anti-slide pile reinforcement. Hence, it is necessary to calculate the slope safety factors corresponding to different ratios of water depth to slope height under the condition of maximum water level plummeting speed, then select the minimum one as the criterion value for slop stability analysis. Besides, the location of anti-slide pile has a relatively high influence on the slope reinforcement effect. The appropriate location can be determined by the relationship curve of the ratio of water depth to slope height and slope safety factor according to different pile locations.