Design of Support System for deep Stratified Excavation

Abstract

Deep excavations are becoming common in urban environments, be it for the construction of multi-story buildings or tunnels or underground subway networks etc. These excavations result in lateral movements of retaining structure and consequently lead to vertical settlement in the retained soil mass which in turn, leads to settlement in the foundation of any neighboring structure. With the ever-growing demand for structures mentioned previously in developing nations as well where a lack of adequate field data presents a challenge in estimating these settlements it is imperative that a method be devised or adequate modifications to existing equations/ methods be made, such that suitable yet conservative estimates of loads, deflections and settlements can be made to aid in the design of an adequate support structure that can mitigate the threat of any potential loss or damage to life or property. The design despite being conservative should also be such that it does not compromise the economy of the project to an extent where it is deemed unfeasible.