土工格室加筋风化千枚岩填料应力应变响应  

Stress-Strain Response of Geocell Reinforced Weathered Phyllite Rock Filling

作　　者：何新平 朱元林 刘瑾 兰虎 刘娜 HE Xinping;ZHU Yuanlin;LIU Jin;LAN Hu;LIU Na(China Highway Engineering Consulting Group Corporation,Beijing 100089,China;Zhejiang Institute of Communications Co.,Ltd.,Hangzhou 310000,China;China United Engineering Corporation Limited,Hangzhou 310052,China;Shandong Institute of Highway Technician,Jinan 253020,China)

机构地区：[1]中国公路工程咨询集团有限公司,北京100089 [2]浙江数智交院科技股份有限公司,杭州310000 [3]中国联合工程有限公司,杭州310052 [4]山东公路技师学院,济南253020

出　　处：《路基工程》2025年第2期63-69,共7页Subgrade Engineering

基　　金：中咨集团科技研发项目:土工格室生态支挡结构技术研究(zzkj-2022-06)。

摘　　要：采用大型三轴试验,测试对比风化千枚岩与常规满足规范使用要求路堤填料碎石土的应力-应变曲线,分析两者的差异性;基于土工格室加筋土应力-应变响应计算模型和参数敏感性,分析风化千枚岩填料的邓肯-张模型弹性常数、强度参数和格室切线模量对于格室加筋风化千枚岩强度的影响。研究表明:格室加筋风化千枚岩的峰值偏差应力可超过碎石,加筋土的等效黏聚力随着弹性常数k值减小、填土的破坏比R_(f )增加、内摩擦角φ增加、格室条带刚度M_(t )的增加而增大。Using large triaxial test,test and compare the stress-strain curves of weathered phyllite rock and conventional embankment fill gravel soil to meet the specification requirements,analyze the differences between the two;based on the calculation model of the stress-strain response of the geocell reinforced soil and parameter sensitivity,analyze the Duncan's tensile model of elastic constants of the weathered phyllite rock fill,the strength parameter and the tangent modulus of the compartment on the strength of the compartment reinforced weathered phyllite rock.The effect of the Duncan tensor model on the strength of weathered phyllites is analyzed.It is shown that the peak deviatoric stress of the cell-reinforced weathered phyllites can exceed that of gravel,and the equivalent cohesion of the reinforced soil increases with the decrease of the value of the elastic constant k,the increase of the damage ratio of fill Rf,the increase of the angle of internal frictionφ,and the increase of the stiffness of the cell strips Mt.

关 键 词：土工格室 填料 千枚岩 三轴试验 峰值偏差 差异性 等效黏聚力 路用性能 

分 类 号：U416[交通运输工程—道路与铁道工程]