高铁路基桩网结构土工格栅张拉试验研究
Study on the Tensile Test of Geogrids in Pile Mesh Structure of High Railway Foundation
梁红玉1
作者信息
- 1. 四川省铁路建设有限公司,四川 成都 610000
- 折叠
摘要
为提升软土地区桩网结构路基的力学性能,文中开展了高铁路基桩网结构土工格栅张拉试验,分析路基填筑、桩间防水工况下格栅拉力的分布规律.结果表明,随着放水时间的增加,桩间土的沉降量表现为近似线性增加的变化规律,最终的桩间土沉降量达到了80 mm;桩顶条带桩中心位置处的格栅拉力随着桩间土沉降量的增加表现为不断增加的规律;桩帽边缘的格栅拉力随着桩间土沉降量的增加表现为先增加再降低后稳定的规律.
Abstract
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.
关键词
路基桩网结构/土工格栅/张拉应力/沉降量Key words
Roadbed pile network structure/Geogrid/Tensile stress/Settling capacity引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据