岩土力学2026，Vol.47Issue(7)：2433-2448,16.DOI:10.16285/j.rsm.2025.0630
新型框架预应力T形托定锚加固多级填方边坡地震稳定性实时分析
Real-time seismic stability analysis of multi-stage fill slopes reinforced by novel frame prestressed T-shaped fixed anchors
摘要
Abstract
To address the limitations of the current reinforcement technology for multi-stage high-fill slopes,this study proposes a novel flexible supporting structure called frame-prestressed T-shaped fixed anchors(FPTA)that achieves superior reinforcement performance.Firstly,based on the asymmetric distribution of the pullout failure mode of the T-shaped anchor along the burial depth,the concept of the asymmetric failure influence height lz is introduced.A unified mechanical model for the horizontal ultimate pullout resistance of the T-shaped anchor is established,and the anchoring action is represented as the additional cohesion Δc based on the pseudo-cohesion theory.Secondly,a seismic stability analysis method for multi-stage fill slope reinforced by FPTA is developed by using the pseudo-dynamic approach combined with the upper-bound limit analysis method.This method considers the inhomogeneous and damping properties of the fill soil,the interaction between the T-shaped anchor and the soil,and the geometric characteristics of the multi-stage slope.Then,the comparative analysis between the proposed method,experimental results,and existing research serves to demonstrate the validity and reliability of this method.Finally,the effects of soil strength parameters,slope geometry parameters,supporting parameters,and seismic parameters on slope stability are elucidated.This study provides technical guidance for multi-stage fill slope reinforcement engineering projects and offers a theoretical basis for the seismic design of multi-stage fill slopes reinforced by FPTA.关键词
地震稳定性/框架预应力T形托定锚/多级填方边坡/实时分析/参数分析Key words
seismic stability/frame-prestressed T-shaped fixed anchors/multi-stage fill slope/real-time analysis/parametric analysis分类
建筑与水利引用本文复制引用
张俊,叶帅华,崔新壮..新型框架预应力T形托定锚加固多级填方边坡地震稳定性实时分析[J].岩土力学,2026,47(7):2433-2448,16.基金项目
国家自然科学基金(No.52168050) （No.52168050）
甘肃省科技计划项目(No.24JRRA207). This work was supported by the National Natural Science Foundation of China(52168050)and the Gansu Province Science and Technology Plan Project(24JRRA207). （No.24JRRA207）
