การประยุกต์ใช้เสาดินซีเมนต์ในการเสริมเสถียรภาพระบบป้องกันดินที่ใช้กําแพงไดอาแฟรม ในงานขุดดินลึก: กรณีศึกษา

Chanchai  Submaneewong

Authors

Chanchai Submaneewong -

Keywords:

Soil cement column, Diaphragm wall, Soil movement

Abstract

In deep excavation works within major urban areas particularly in Bangkok, the safety of soil protection systems is concerned. In addition, soil movement must be carefully controlled to prevent the impacts on adjacent nearby structures. Soil cement columns, an effective ground improvement technique, have been applied in underground construction to enhance stability and reduce soil displacement. This paper presents the design concept, construction techniques, and case studies of deep excavation projects where Diaphragm walls were stabilized with soil-cement columns. Two construction approaches are considered: 1) the arrangement of soil-cement columns to reduce active earth pressure, and 2) the arrangement of soil-cement columns to increase passive earth pressure. The study results indicate that the use of soil-cement columns can significantly reduce ground movements and enhance the safety of earth-retaining systems during deep excavation. Moreover, this method helps minimize the risk of damage to nearby structures.

References

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Zaw Zaw Aye, Chanchai Submaneewong, Thayanan Bunyarak and Chakkrit Chanchad (2007). Application of Observation Method in Diaphragm wall Support Basement Excavation. International Symposium on Tunnelling for Urban Development. Pattaya City, Thailand.