Study on the Tensile Test of Geogrids in Pile Mesh Structure of High Railway Foundation
In order to improve the mechanical properties of pile mesh structure roadbed in soft soil area,the paper carried out the tensile test of pile mesh structure of high railway foundation,and analyzed the distribution law of grid tension under subgrade filling and waterproofing be-tween piles.The results show that with the increase of water discharge time,the settlement of soil between piles increases approximately linear-ly,and the final settlement of soil between piles reaches 80 mm.The grille pull at the center of strip pile at the top of pile increases with the increase of soil settlement between piles.With the increase of soil settlement between piles,the grid tension at the edge of pile cap increases first,then decreases and then becomes stable.
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