软土地基上生态加筋挡土墙力学性状的现场试验和数值模拟分析  

Field test and numerical simulation analysis of mechanical properties of ecologically reinforced retaining wall on soft soil foundation

作　　者：张俊腾 刘常涛 ZHANG Jun-teng;LIU Chang-tao(Fujian Agricultural Vocational and Technical college,Fuzhou,Fujian 350119,China)

机构地区：[1]福建农业职业技术学院园艺园林学院,福建福州350119

出　　处：《宁德师范学院学报(自然科学版)》2025年第1期28-36,共9页Journal of Ningde Normal University(Natural Science)

基　　金：福建省教科委基金(JAT220608);福建省中青年教师教育科研项目(JZ201178,JZ18057)。

摘　　要：通过现场试验和数值模拟计算分析,并结合现有规范从具体工程实践出发,研究软土地基上生态加筋挡土墙的性状和稳定性。研究结果表明,数值模拟的挡墙沉降、墙面水平位移、墙背土压力和筋材内力与现场实测结果吻合较好。提出HSS本构模型的两个重要参数的计算公式,以及适用软土地基上该类挡墙的墙背土压力、锚固区长度的计算公式和筋材间距的最优值,揭示了软土地基上该类挡土墙最容易出现的滑动面为由直线状的朗肯坏面和圆弧状的“瑞典滑动面”组成的深层滑动面,按照现有规范对该类挡墙施工图的审查时,还应要求设计人员补充挡墙出现深层滑动破坏和整体破坏工况的稳定性验算的计算书。Through on-site experiments and numerical simulation analysis, combined with existing standards and specific engineering practices, this study investigates the characteristics and stability of ecological reinforced retaining walls on soft soil foundations. The results indicate that the settlement of retaining walls, horizontal displacement of walls, soil pressure on the back of walls, and internal forces of reinforcement in numerical simulations are in good agreement with the on-site measurement results. The calculation formulas for two important parameters of the HSS constitutive model are proposed, as well as the calculation formulas for the wall back soil pressure, anchorage zone length, and the optimal value of reinforcement spacing applicable to such retaining walls on soft soil foundations. It has been revealed that the most common sliding surface of this type of retaining wall on soft soil foundation is a deep sliding surface composed of a straight Rankine failure surface and a curved Swedish sliding surface. When reviewing the construction drawings of this type of retaining wall according to existing standards, the reviewer should also request the designer to supplement the stability calculation sheet for the occurrence of deep sliding failure and overall failure conditions of the retaining wall.

关 键 词：生态加筋挡土墙 软土地基 数值分析 稳定性 

分 类 号：TU470.3[建筑科学—结构工程]