加筋土结构在山地给水厂站中的应用  

Application of Reinforced Soil Structures in Mountainous Water Plant

作　　者：雷晗 许大鹏 聂双 Lei Han;Xu Dapeng;Nie Shuang(Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,200092,China;Tensar Geosynthetics(China)Co.,Ltd.,Wuhan 430058,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,200092 [2]坦萨土工合成材料(中国)有限公司,武汉430058

出　　处：《特种结构》2025年第1期76-81,共6页Special Structures

摘　　要：加筋土结构应用于填方边坡时能提高边坡的稳定性,相比于传统支挡结构优势明显。本文以某山地给水厂站工程为例,采用强度折减法分析了土工格栅的作用,通过对比加筋土边坡方案、加筋土与挡土墙结合方案,选用了稳定系数高、工程造价低的加筋土边坡方案,对加筋土结构中的土工格栅、填土提出了工程技术指标要求。对土工格栅的强度、长度、间距以及填筑料的内摩擦角进行了敏感性分析,结果表明各参数对边坡的整体稳定性影响极大。采用多种格栅相结合的边坡结构,坡面采用土工格栅反包土工袋,计算结果表明能满足填方边坡稳定性的要求。同时介绍了施工中的相关构造措施,为加筋土在类似高填方厂站中的应用提供参考。The use of reinforced soil structures in fill slopes can significantly enhance slope stability and offers notable advantages over traditional retaining structures.Taking a mountainous water plant project as a case study,this paper investigates the role of geogrids using the strength reduction method.A comparison between a reinforced soil slope scheme and a combined reinforced soil and retaining wall scheme leads to the selection of the reinforced soil slope scheme for its higher safety factor and lower project cost.Technical specifications for the geogrid and fill material in the reinforced soil slope structure are proposed.A sensitivity analysis is conducted on the geogrid's strength,length,and spacing,as well as the internal friction angle of the fill material.The results indicate that these parameters significantly influence the overall slope stability.The design incorporates a slope structure that combines multiple types of geogrids,with geogrids wrapped around geotextile bag on the slope surface.Calculations demonstrate that this approach meets the slope stability requirements.Furthermore,relevant structural measures employed during construction are detailed.This study provides a valuable reference for the application of reinforced soil structures in similar fll slope projects.

关 键 词：加筋土 土工格栅 强度折减法 反包土工袋 

分 类 号：TU476.4[建筑科学—结构工程]