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Method for analyzing long-term stability of soft rock slope
The invention discloses a method for analyzing the long-term stability of a soft rock slope. The method comprises the steps that S1, soft rock creep damage is classified, and various damage equations are established; s2, dividing the soft rock creep curve into a stable creep stage and an unstable creep stage; s3, establishing a creep equation; s4, establishing a three-dimensional creep damage mathematical model; s5, compiling a user-defined constitutive model program; s6, a slope model is established, and slope plastic zone distribution, potential sliding surface conditions and horizontal displacement change rules under different dry-wet cycle times are obtained through a user-defined constitutive model program; and S7, when the conditions that the plastic area of the slope is communicated, the potential sliding surface is formed and the horizontal displacement is accelerated and increased at the same time under a certain number of dry-wet cycles are met, it is judged that the soft rock slope is subjected to creep damage under the number of dry-wet cycles. According to the method, the coupling effect of dry-wet circulation, axial pressure and time is considered, and the long-term stability of the soft rock slope is analyzed and predicted through a simulation result.
本发明公开了一种软岩边坡长期稳定性的分析方法，包括：S1：将软岩蠕变损伤分类并建立各类损伤方程；S2：将软岩蠕变曲线分为稳定蠕变阶段和不稳定蠕变阶段；S3：建立蠕变方程；S4：建立三维蠕变损伤数学模型；S5：编写自定义本构模型程序；S6：建立边坡模型，通过自定义本构模型程序得到不同干湿循环次数下边坡塑性区分布、潜在滑动面情况和水平位移变化规律；S7：当某个干湿循环次数下的边坡塑性区贯通、潜在滑动面形成、水平位移加速增大同时满足时，判定该干湿循环次数下软岩边坡蠕变破坏。本发明考虑了干湿循环、轴压和时间的耦合作用，通过仿真结果对软岩边坡长期稳定性进行分析和预测。
Method for analyzing long-term stability of soft rock slope
The invention discloses a method for analyzing the long-term stability of a soft rock slope. The method comprises the steps that S1, soft rock creep damage is classified, and various damage equations are established; s2, dividing the soft rock creep curve into a stable creep stage and an unstable creep stage; s3, establishing a creep equation; s4, establishing a three-dimensional creep damage mathematical model; s5, compiling a user-defined constitutive model program; s6, a slope model is established, and slope plastic zone distribution, potential sliding surface conditions and horizontal displacement change rules under different dry-wet cycle times are obtained through a user-defined constitutive model program; and S7, when the conditions that the plastic area of the slope is communicated, the potential sliding surface is formed and the horizontal displacement is accelerated and increased at the same time under a certain number of dry-wet cycles are met, it is judged that the soft rock slope is subjected to creep damage under the number of dry-wet cycles. According to the method, the coupling effect of dry-wet circulation, axial pressure and time is considered, and the long-term stability of the soft rock slope is analyzed and predicted through a simulation result.
本发明公开了一种软岩边坡长期稳定性的分析方法，包括：S1：将软岩蠕变损伤分类并建立各类损伤方程；S2：将软岩蠕变曲线分为稳定蠕变阶段和不稳定蠕变阶段；S3：建立蠕变方程；S4：建立三维蠕变损伤数学模型；S5：编写自定义本构模型程序；S6：建立边坡模型，通过自定义本构模型程序得到不同干湿循环次数下边坡塑性区分布、潜在滑动面情况和水平位移变化规律；S7：当某个干湿循环次数下的边坡塑性区贯通、潜在滑动面形成、水平位移加速增大同时满足时，判定该干湿循环次数下软岩边坡蠕变破坏。本发明考虑了干湿循环、轴压和时间的耦合作用，通过仿真结果对软岩边坡长期稳定性进行分析和预测。
Method for analyzing long-term stability of soft rock slope
一种软岩边坡长期稳定性的分析方法
LI SHENGNAN (author) / ZHANG JUNHUI (author) / WU YAN (author) / YANG HAO (author) / PENG JUNHUI (author) / YUE SHAO (author) / CHEN KANG (author) / REN ZHENHUA (author) / WU YINGZHOU (author)
2024-12-03
Patent
Electronic Resource
Chinese
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