ESTIMATION METHOD FOR INCREMENTAL RESISTANCE ON LIGHTWEIGHT THRUST RESTRAINT USING GEOGRID

Abstract

Thrust force acts on pipe bend due to internal pressure. In previous study, the lightweight thrust restraint having anchor plate and geogrid has proposed and the effect has proved by lateral loading tests. In addition the resistance mechanism of new method has investigated by distinct element analysis. In this paper, a relationship between incremental resistance and horizontal displacement was modeled based on the resistance mechanism. In addition, using this model, simulation of tests was carried out. As the results, proposed model was good agreement with test results.