Development of thrust protection method for buried pipe using gabion
Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
Date (from‐to) : 2017/04 -2019/03
Author : ARAKI Hiroyuki
On the bend of a buried water supply pipeline, the thrust force is applied to the ground. In this study, thrust protection using a gabion composed of a geogrid basket and gravel as a pressure-receiving structure to protect against thrust force is proposed. Further, the effects of this method are evaluated by conducting model experiments. In the model experiments, a constant load simulated thrust force was applied laterally to a buried pipe model in the model ground where the internal effective stress was decreased by increasing hydraulic gradient stepwise. Gabion models of several widths and heights were placed on the ground in the direction of the thrust force. Results revealed that the gabion stabilizes the pipe even when the effective pressure of the surrounding ground decreases significantly.