Mass Gravity Retaining Walls
TRIVANDRUM - KERALA - India
Panchkarma Ayurvedic Hospital,Trivandrum
GABION WALL AT PANCHKARMA AYURVEDIC HOSPITAL
GABION WALL AT PANCHKARMA AYURVEDIC HOSPITAL_0
GABION WALL AT PANCHKARMA AYURVEDIC HOSPITAL_1
Table 1: Soil properties
Photo 5: Structure after 2 years
Photo 6: Structure after 2 years
Panchkarma Ayurvedic hospital at Trivandrum was facing seepage of water under the building because of the existence of a pond at the other side of the building. A conventional rigid system can prevent the free flow of water. This will increase pore water pressure on the structure if it is rigid in nature. This in turn will increase the size of structure and increase the cost. The foundation and backfill soil has weak shear parameters. All the above factors prompt to provide a solution with permeable structure which is free draining and flexible in nature.
Considering weak soil parameters and seepage, a flexible free draining structure would be an ideal solution and the same was proposed with gabion wall. Replacement of existing foundation soil with the soil having good characteristics was suggested. A graded filter of gravel and sand was provided for free draining behind the wall along with a geotextile. A Gabion wall of 2 m to 5m height including foundation and batter of 6 degree was constructed. Maccaferri gabions are cages which are engineered from double twisted hexagonal woven steel wire mesh. They are uniformly partitioned, come in variable sizes, interconnected with adjacent cages and filled with stone at the site to form flexible, permeable, monolithic structures such as retaining walls for road and railway projects. Additional advantages of gabion retaining wall are: • Cost-Effectiveness. • Simplicity in construction and economy. • Environmental friendliness. • Permeability. • Flexibility & Versatility. • Structural Safety.