Study the pattern of soil cement columns for sheet piles wall reinforcement by using finite element method (FEM)

Abstract

Nowadays, in the skyscraper construction in Bangkok always has a basement in order to take the advantage of the space in the building so the basement construction has to use sheet piles to protect it from the lateral earth pressure. Due to sheet piles wall take less space than other protection systems. This research studies types of soil cement columns (SCC) for increasing the efficiency of sheet piles with bracing in 7 meters excavation. It has 3 case studies consist of sheet piles without reinforced SCC, sheet piles with vertical SCC soil side and excavation side, sheet piles reinforced SCC in horizontal axis under the excavation level. Then, observing the horizontal displacement with the Inclinometer construction area in order to compare the horizontal displacement from Finite Element Method (FEM). In addition, investigating the types of soil cement columns for decreasing the displacement founds that the decision to apply sheet piles reinforced SCC in horizontal axis under the excavation level. It can reduce displacement of sheet piles 12.7% and this type is more convenient for excavation work than sheet piles with vertical SCC.