The Construction of Test Retaining Walls with Geotextiles

Abstract

The purpose of this study is to establish the design methods of constructing retaining walls at low cost in the field of agricultural civil engineering.
Friction resistance values in the earth for the design of retaining walls were obtained from the friction resistance test of geotextiles in the field.
The four kinds of retaining walls reinforced with geotextiles, which were spunbonded nonwoven fabric horizontal laying, spunbonded nonwoven fabric or geo-grid wrapping and continuous thread-reinforced soil, were constructed to observe settlement, deformation, soil moisture and underground water level. Each of these walls was 5 meters in height, 8 meters in width.
The results of the observations showed that the stability of the steep slope (60 degrees) retaining walls below 5 meters in height and about 60 degrees constructed by wrapping method at 1 meter interval in height or continuous thread-reinforced soil method of the width of 1.5 meters, was obtained under the condition of enough drainage.