U形槽基础砌块式包裹对拉加筋挡土墙施工技术  

CONSTRUCTION OF REINFORCED RETAINING WALL WITH BLOCK WRAPPING FOR U-SHAPED TROUGH FOUNDATION OF IMMERSED SOFT SUBGRADE

作　　者：余自勇[1] Yu Zi-yong

机构地区：[1]中铁一局集团第二工程有限公司,河北唐山063004

出　　处：《建筑技术开发》2025年第4期61-64,共4页Building Technology Development

摘　　要：为解决浸水高填方软土铁路路基强度低、变形大等问题,提出了U形槽基础砌块式包裹对拉加筋挡土墙施工方法和监测方案,经分析得出:挡土墙的底部设置U形槽基础提高了结构整体性,面板采用36cm×32.5cm×30cm和54cm×32.5cm×30cm的小型预制砌块式,减少了大型吊装设备,减少了当地征地拆迁和交通运输难题,墙面板竖向最大位移值为0.13mm/d,水平累计位移达到最大值为0.15mm/d,墙面板后侧土压力随填筑高度增加线性增加,路基无不均匀沉降。In order to solve the problems of low strength and large deformation of railway subgrade in high filled soft soil under water immersion,the construction method and monitoring plan for a U-shaped groove foundation block wrapping reinforced retaining wall with tension reinforcement is proposed.It is concluded that the U-shaped groove foundation to improve the overall structural integrity.The panels are made of small prefabricated blocks of 36 cm×32.5 cm×30 cm and 54 cm×32.5 cm×30 cm,which reduces the need for large lifting equipment and local land acquisition,demolition,and transportation difficulties.The maximum vertical displacement of the wall panel is 0.13 mm/day,and the maximum horizontal cumulative displacement is 0.15 mm/day.The soil pressure behind the wall panel increases linearly with the filling height without uneven settlement.

关 键 词：浸水软基 U形槽 砌块式 包裹对拉加筋挡土墙 

分 类 号：TU417[建筑科学—岩土工程]