论文部分内容阅读
滑坡区隧道自锚式加固结构是针对位于深厚滑坡体中隧道病害治理问题而提出的一种新型治理措施。为研究整个加固结构与滑坡土体相互作用下的受力变形规律,首先建立物理力学计算模型,采用传递矩阵法推导内力及位移的传递矩阵计算式,借助MATLAB编程计算,得到加固结构内力和位移的分布特征,然后分别对加固结构进行数值模拟计算和物理模型试验,验证理论计算方法及结果的正确性。研究结果表明:(1)抗滑支撑桩与锚索能很好地控制隧道的位移,改善隧道的受力状态;(2)设计中,应尽量减小锚索与水平面的夹角,并增大滑坡边界范围内锚索力的设计值;(3)数值模拟计算和模型试验得到的隧道内力和位移分布特征与理论计算结果相吻合,验证了理论计算方法及结果的正确性。
Landslide area tunnel self-anchored reinforcement structure is a new type of treatment measures proposed for the treatment of tunnel disease in deep landslides. In order to study the stress and deformation under the interaction between the whole reinforced structure and the landslide soil, a physical and mechanical calculation model is established. The transfer matrix method is used to deduce the transfer matrix formula of internal force and displacement. With MATLAB programming, the internal forces and displacements Then, the numerical simulation and physical model test of the reinforced structure are carried out respectively, and the correctness of the theoretical calculation method and the result are verified. The results show that: (1) The anti-slide support pile and anchor cable can well control the displacement of the tunnel and improve the stress state of the tunnel; (2) The design should minimize the angle between the anchor cable and the horizontal plane and increase The design value of anchor force in the range of large landslide boundary; (3) The distribution of internal forces and displacements of tunnels obtained by numerical simulation and model tests are consistent with the theoretical calculation results, which verify the correctness of theoretical calculation methods and results.