Stability Analysis Of High Side Slopes Of Railway Station Of Shimiaogou

With the economical development, more high side slope projects appear at the engineering construction; consequently the prestressed anchor cable anti-slide pile has developed into the high slope protection one important effective method. The thesis unified engineering project of geology roadbed department of the railroad second reconnaissance design institute. This project is the roadbed stabilization protection of the station of Shi Miaogou of the Xiangfan—Chongqing additionally construct the second railway project. This thesis has used the structure mechanics analysis method and the Lagrange explicit finite difference method. The stability of the high side slope of Shi Miaogou station is calculated.The stress characteristic of Anchor cable pile is analyzed.The interactivity mechanism is discussed.The thesis first utilizes the structure mechanics analysis method, Pile bracket section and anchor section have considered according to pile and cable deformated coordination and the Winkler elastically foundation beam respective. The bending moment, the shearing force and the displacement of pile, the end tensile stress of cable, are obtained. This thesis then has made use of the Lagrange explicit finite difference method. The FLAC^3D software is used. The interaction of the pile - cable -rock is considered. The stability of the K323+050 side slope is calculated. The stress characteristic of anchor cable pile, and the stress,the deformation and the plastic area distribution of rock , are obtained.The thesis contrasts the finite difference method with the structure mechanics analysis method, A great many of similarities is acquired by these two methods. The horizontal displacement value of the head of pile is approximation, the maximum bending moment and shearing force of the pile both are located nearby the anchor surface as well as the value approximation by these two methods. But these two methods also have the difference. The pile and cable were connected by coupling translation degree of the common node, The stress concentration effect of the common node of the pile unit and the cable unit may has been calculated. The bending moment and shearing force value of the pile anchor section lower segment both are extremely small by the finite difference method, but these both are relatively outstanding by the structure mechanics analysis method.The finite difference method's merits lie in that it may consider Stratum special property, the side slope stable influence due to the part slope transformation, the coupling effect of the pile—cable—rock. The achievements obtained have the guiding sense to this project, and the reference and the model function to the correlation project.