Field Test Research of Reinforced Earth Wall for Expansive Soil

Based on the reinforced earth wall project of a transformer substation,field test was conducted. The earth pressure, lateral displacement and strain in different point of reinforced belt were measured in situ. It was shown that earth pressure increase quickly with filling height,vertical earth pressure in situ was greater than γh and coefficient of earth pressure was gradually enhanced when the fill height lowdown. Along with the increasing of fill height, vertical earth pressure is convergent and less than γh. In the mean time coefficient of earth pressure was gradually decreased. In the course of rainfall, the horizontal and vertical earth pressure was smaller than that measured ones before rainfall. The horizontal and vertical deformations were effectively restrained by reinforced strips. The result indicates that reinforced earth wall is stable. The field test results are useful for reinforced earth wall construction.