AN INVESTIGATION INTO THE MECHANISMS THAT GENERATE PULLOUT RESISTANCE OF STEEL CHAIN IN NON-COHESIVE SOILS

抄録

 Design method for reinforced chain wall has been de veloped even though the mechanisms that generate pullout force of chain are not clear. In order to evaluate the pullout mechanism, a series of pullout test were conducted on chains of varied configurations. Assuming that the total pullout resistance consists of three components which are bearing resist ance, shearing resistance of the tr apped soil inside each loop and the frictional resistance between the chain and soil, test results showed that the bearing resistance accounts for about 90 % of the total resistance. In addition it was found that the shearing resist ance of the soil enclosed in the inside loop is too small and therefore can be neglected when computing the pullout force of steel chain.