Sheet pile walls are used in construction to provide structural support and prevent soil collapse. It is especially beneficial when soil with a surcharge load must be retained on the backfill side of the wall while excavation is performed. Due to rapid urbanization, numerous structures exist around the urban areas; hence, excavation in those areas results in additional surcharge pressure along with lateral earth pressure. An investigation has been done in a laboratory experimental test set-up in silty-sand soil to find the sheet pile wall behavior. Sequential excavation of frontfill soil is done by lifting soil in four equal layers in order to incorporate the effect of the construction sequence. The present study investigates sheet pile wall deflection and ground settlement characteristics with varying surcharge loads placed above the backfill soil in each excavation stage. The surcharge load is applied using square plates of 9, 18, 27, and 36 kPa magnitude. The effect of the wall embedded depth is also observed. The results show that increased surcharge load increases the wall deflection and ground settlement. Higher excavation depth leads to a higher deflection and backfill settlement. The stability of sheet pile walls is higher with high embedded depth.

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Experimental Analysis of Sheet Pile Wall in Silty-sand Soil

  • Sunanda Debnath,
  • Abhijit Debnath,
  • Sujit Kumar Pal

摘要

Sheet pile walls are used in construction to provide structural support and prevent soil collapse. It is especially beneficial when soil with a surcharge load must be retained on the backfill side of the wall while excavation is performed. Due to rapid urbanization, numerous structures exist around the urban areas; hence, excavation in those areas results in additional surcharge pressure along with lateral earth pressure. An investigation has been done in a laboratory experimental test set-up in silty-sand soil to find the sheet pile wall behavior. Sequential excavation of frontfill soil is done by lifting soil in four equal layers in order to incorporate the effect of the construction sequence. The present study investigates sheet pile wall deflection and ground settlement characteristics with varying surcharge loads placed above the backfill soil in each excavation stage. The surcharge load is applied using square plates of 9, 18, 27, and 36 kPa magnitude. The effect of the wall embedded depth is also observed. The results show that increased surcharge load increases the wall deflection and ground settlement. Higher excavation depth leads to a higher deflection and backfill settlement. The stability of sheet pile walls is higher with high embedded depth.