河南城建学院学报2026，Vol.35Issue(2)：49-56,8.DOI:10.14140/j.cnki.hncjxb.2026.02.007
基于响应面法的冻结改良黏土配比优化及单轴抗压本构模型
Optimization of the proportion of frozen improved clay based on response surface methodology and uniaxial compressive constitutive model
摘要
Abstract
To address the stability issues caused by low-strength clay in engineering,this study proposes the application of the freezing method in combination with the fly ash-cement composite improvement approach.Through single-factor experiments,the reasonable ranges of temperature,cement and fly ash dosage were determined.The response surface method was used to systematically analyze the influence laws of each fac-tor and their interaction on the uniaxial compressive strength of the improved clay.After determining the op-timal ratio(8%cement and 12%fly ash),comparative tests between the improved soil and the original soil were carried out,and the corresponding stress-strain constitutive model was established.The research re-sults show that each factor has a significant impact on the strength of the improved soil,among which the in-teraction between fly ash and temperature is the most prominent.Compared with the original soil,the uniaxi-al compressive strength of the improved soil at-5℃,-10℃and-15℃increased by 372.5%,178.2%and 180.6%respectively.The established stress-strain model can accurately describe the mechanical behav-ior of the improved soil,providing a theoretical basis and design reference for artificial freezing method con-struction.关键词
响应面法/改良黏土/人工冻结法/应力-应变曲线Key words
response surface method/modified clay/artificial freezing method/stress-strain curve分类
建筑与水利引用本文复制引用
姚兆明,朱雯佳..基于响应面法的冻结改良黏土配比优化及单轴抗压本构模型[J].河南城建学院学报,2026,35(2):49-56,8.基金项目
矿山地下工程教育部工程研究中心开放研究项目(JYBGCZX2021104) （JYBGCZX2021104）
