Model Test Study on Deformation Monitoring of 3D Printed Snowflake Shaped Pile

Abstract

Snowflake shaped pile is a new type of special-shaped pile. In order to explore the deformation characteristics of the pile shaft under load, the model test of monitoring the deformation of 3D printed snowflake shaped pile is carried out. The strain information of 3D printed snowflake shaped pile under load is obtained, and the strain of pile shaft at different positions of snowflake shaped pile are analyzed in detail. The test results show that: Under the influence of boundary effect, there will be a coordinated deformation transition section of optical fiber strain near the pile head, which has a certain influence on the test results. If the influence of boundary effect is ignored, under the action of vertical load, the strain of 3D printed snowflake shaped pile decreases gradually with the increase of depth, and finally tends to 0 at the bottom of the pile. The strain of pile shaft at different positions of the same section is different. The strain of pile shaft at the junction of web and web is basically the same as that at the junction of web and flange. The pile shaft strain on the flange is larger, and the magnitude of strain difference at different parts will increase with the increase of load.