Deformation Analysis Of Pile-anchor Retaining Structure And Surrounding The Foundation Pit

Pile-anchor supporting structure is a kind of anti-slide structure.It composed ofpiles and prestressed anchor which shared external soil and water pressure. It due to theadvantages of low cost, convenient construction, continue to widely application infoundation pit supporting design. Excavation,on the one hand,enssure the security andstability of the pit itself; on the other hand, urban areas tend to be dense buildings, inthis environment, still need to focus on its construction deformation effect on thesurrounding ground.It introduces the deformation calculation method of the pile-anchor supportingstructure and the settlement estimation method of surrounding ground on the basis ofsummarize the existing research results in this paper.Firstly, it introduces a foundation pit engineering example simply in thispaper.Collated and simply analyzed the monitoring data use the list method and graphicmethod.Then, it calculates the deformation of the supporting structure and surroundingground’s settlement under various operating conditions of the excavation, at the sametime draws the deformation curve. It calculates the deformation under the condition ofoverload and overexcavation, afterwards, analyzes the differences between the twodeformationsFinally, it analyzes the monitoring results and the calculation results, drawing aconclusion. The calculation results which accord to the specification are on theconservative side. In the excavation and the setting up of the prestressed cable,foundation pit surrounding buildings’ changing rate of the settlement is stable.In the process of the underground structure construction, the changing rate is moreand more small, and finally tends to zero.