Excavation Adjacent to the Existing Building A Study Case

Abstract

A 17 stories building is planned to be erected at the crowded area. A 4 floors office and 2 floors house are its right and left neighbors. 2 floors surgery building of the hospital is right behind the project area. Of 3.2m depth will be excavated at the area for basement in which the ground water table is at 2m depth. The excavation could trigger instability for the surrounding buildings, especially when the dewatering process takes place. This paper intends to describe the analysis of the excavation process and the inferred ground stability. The model simulation by means of Plaxis 2D 2011 recommends the modification of construction stages drastically. Local excavation at the pile cap area is the best method to generate the smallest deformation on the nearby area.