南方地区某山地高挡土墙工程防护与自然防护联合加固作用下稳定性影响研究  

Research on stability influence of a high retaining wall in a mountainous area in southern China under combined reinforcement of engineering protection and natural protection

作　　者：蒋定良 易文[2] 于鹏 JIANG Dingliang;YI Wen;YU Peng(Infrastructure Department,Hunan Normal University,Changsha 410006,Hunan,China;School of Civil engineering,Central South University of Forestry and Technology,Changsha 410004,Hunan,China)

机构地区：[1]湖南师范大学基建处,湖南长沙410006 [2]中南林业科技大学土木工程学院,湖南长沙410004

出　　处：《工程建设》2025年第2期1-7,共7页Engineering Construction

基　　金：湖南省交通科技计划资助项目(202212)。

摘　　要：为研究南方山区在多雨气候条件下高边坡的稳定性影响和设计施工优化措施,依托褶皱丘陵过渡河滩范围内高挡土墙边坡加固改造项目,通过对典型剖面的边坡支护结构设计、变形量的有限元分析、工程现场监测比较,研究支护结构、既有多层民居以及土体变形的时程规律,探讨结构变形的相关规律特征,揭示工程防护与自然防护联合作用机制。研究结果表明:对于锚杆和格构梁加固的挡土墙,锚杆将承担大部分的土压力,且可以直接在既有挡墙上进行锚杆加固。同时,在南方多雨条件下,采用自然防护和工程防护可以有效提升土体的整体稳定性和安全冗余,而对于坡脚矮挡土墙,也需要结合岩土分层确定墙体高度,避免因降雨造成整体失稳。本文研究成果可为类似工程的建设和处置提供一定的借鉴与参考。In order to study the stability influence of high slopes in rainy climate conditions in southern mountainous areas and the optimization measures for design and construction,relying on the high retaining wall slope reinforcement and reconstruction project within the transition river beach of folded hills,through finite element analysis on the design of slope support structure of typical sections and deformation,and comparison of engineering site monitoring,the time course of deformation of support structure,existing multi-story residential buildings and soil is studied,the relevant regular characteristics of structural deformation are explored,and the joint action mechanism of engineering protection and natural protection is revealed.The results show that,for retaining walls reinforced with anchors and lattice beams,the anchors will bear most of the earth pressure and anchor reinforcement can be carried out directly on the existing retaining walls.At the same time,under the rainy conditions in the south,the use of natural protection and engineering protection can effectively improve the overall stability and safety redundancy of the soil.For the low retaining wall at the foot of the slope,the height needs to be determined in combination with the rock and soil stratification to avoid overall instability caused by rainfall.The results can provide a certain reference for the construction and disposal of similar projects.

关 键 词：山区高边坡 降水影响 生态防护 稳定性 模拟分析 南方地区 

分 类 号：U213.158[交通运输工程—道路与铁道工程]