对深基边坡稳定问题本文提出插筋加固和局部开孔卸载联合支护新体系 ,并首次提出用变弹法解出插筋作用形成复合土体的应力本构关系 ,并对其作用机理探讨。提出插筋复合土体边坡二种破坏模式和杆筋与杆间土间的四种破坏模式。最后通过对插筋与杆间土引入一个能反映粘结一滑移机制的粘结单元。建立了新的杆体与杆间土协同作用有限元模型并通过算例与实测资料对比 ,验证了所建立模型的正确 This paper presents a new system of combined reinforcement of tendons and local open-hole unloading for stability of deep-foundation slope. The stress constitutive relation of reinforcing soil to form composite soil is solved for the first time by using the method of " Discussion. Two kinds of failure modes of slope with composite reinforcement and four kinds of failure modes of soil between bars and bars are proposed. Finally, a bonding unit that can reflect the bonding-sliding mechanism is introduced through the inter-reinforcement and inter-bar soil. A new finite element model of synergistic interaction between soil and rod was established and the correctness of the established model was verified by comparing the calculated data with the measured data