2018 Volume 74 Issue 1 Pages 106-117
Concrete blocks are commonly installed at bend sections of buried pipe for resistance of thrust force. However, it is concerned that the stability of the concrete block might not be kept in the liquefied ground. In this study, new thrust protection method with gabion, made of geogrid and gravel is proposed to replace the concrete block method. The effect of the proposed method was evaluated by model tests which buried pipe model was loaded laterally in saturated ground model with controlled effective stress. As the results, the lateral displacement of the pipe model with gabion was nearly one-quarter of that of the buried pipe model without countermeasure. These test results showed the availability of new thrust protection method with gabion for resistance of thrust force.