Designing and calculating of anti-slide pile with anchor cable include calculation of anchor cable tensile force and pile internal force. Anchor cable tensile force directly affects pile internal force. Therefore

anchor cable tensile force computing is crucial in the design of pile-anchor cable structure. On the base of conventional and modified deformation consistence conditions

optimized deformation consistence equation of pile-anchor cable structure is established

in which the effect of the displacement and rotation of pile at sliding surface due to prestressed force of anchor cable on the pile displacement contribution at the i row anchor cable point is considered

and the pile displacement due to the effect of other rows anchor cable prestress Rj0 is removed. Meanwhile

the influence of the incremental horizontal component of anchor cable tensile force on the deformation of anti-slide pile is considered. The deformation and rotation of pile on sliding surface and the deformation made by anchor cables of other rows to point of a row anchor is optimized. Combined with principle of structural mechanics which are virtual work and diagram multiplication method

a calculation programs by Visual C++ was complied to calculate the prestressed force and anchor cable total tensile force through a case study. The results of the three kinds of deformation consistence conditions show that the optimized deformation consistence condition not only makes the anti-slide pile in a good state of stress and deformation in the prestressed stage

but also be suitable for the anchor cable and horizontal plane into different angles. Therefore

the optimized deformation consistence condition makes up the deficiencies of the conventional and modified deformation consistence conditions.