Case Study on GeoTrel~® Reinforced Earth~® Steepened Slopes on Soft Founding Soils for the Approach of Major Bridge Over River Kaljani at CoochBehar in West Bengal, India

摘要

The paper focuses on a particular case study involving the construction of full height steep reinforced slope walls with an inclination of 70° with the horizontal for the approach of major bridge over river Kaljani in West Bengal, India. The maximum height of the steep slope walls is 9m at the abutment location. The soft founding soil has been improved by soil replacement at a requisite design depth followed by providing inclusions of Geostrap~® basal reinforcement at intermediate layers. The case study covers the design, engineering, construction methods and challenges that were overcome during the construction of this project. Another key feature in utilizing this technology over concrete panel or block facing was savings in construction time span and known as 'ready to install' technology. The project has saved the client time and money over conventional rigid retaining wall structures in such cases.