Speedy development of city buildings and full use of subterranean space have accelerated the development of deep foundation pits; and that have also brought a mass of geotechnical engineering problems

such as soft soil foundation pits. When the anchor piles are adopted for a foundation fit

displacement of the retaining structure and soil can be controlled effectively; and it is propitious to excavation of earth

showing the extrusive active purpose. A kind of calculation models for anchor piles brace structure is described emphatically; and quite satisfied results are obtained via a comparison and analysis of specific monitoring.