挡土墙墙后EPS泡沫板的回填效果分析——以我国东南沿海某挡土墙工程为例  

Backfilling effect of EPS foam board behind retaining wall—Taking a retaining wall project along the southeast coast of China as an example

作　　者：倪政东 NI Zhengdong(Fuijan Architecture&Light-textile Design Institute Co.,Ltd.,Fuzhou 350003,China)

机构地区：[1]福建省建筑轻纺设计院有限公司,福建福州350003

出　　处：《安全与环境工程》2024年第6期67-74,共8页Safety and Environmental Engineering

基　　金：国土资源部丘陵山地地质灾害防治重点实验室开放基金项目(FJKLGH2015k002)。

摘　　要：以我国东南沿海某挡土墙工程实例为研究对象,结合大型有限元软件PLAXIS 2D的数值模拟结果与现场监测数据,对比研究了以EPS(expanded polystyrene)泡沫板与碎石土作为墙后填料对挡土墙位移和稳定性的影响,并分析了EPS泡沫板填料对挡土墙墙后所受侧土压力的影响。结果表明:采用EPS泡沫板填料可大幅减小周围土体的位移,同时提高挡土墙的整体稳定性;采用EPS泡沫板作为挡土墙填料,墙后侧土压力仅为采用碎石土填料挡土墙的1%,可极大地减小挡土墙墙后侧土压力。Taking a retaining wall project in the southeast coast of China as the research object,combined with the numerical simulation results of large-scale finite element software PLAXIS 2D and field monitoring data,the influence of EPS(expanded polystyrene)foam board and gravelly soil as backfill behind the retaining wall on the displacement and stability of the retaining wall is studied,and the influence of EPS foam board filler on the lateral earth pressure behind the retaining wall is analyzed.The results show that EPS foam board can greatly reduce the displacement of surrounding soil and improve the overall stability of the retaining wall;and the study finds that lateral earth pressure behind the retaining wall with EPS foam board backfill is only 1%of that with gravelly soil backfill,which can greatly reduce the lateral earth pressure behind the retaining wall.

关 键 词：挡土墙 PLAXIS EPS泡沫板 侧土压力 

分 类 号：X948[环境科学与工程—安全科学] TU476.4[建筑科学—结构工程]