[1]杨进博,李葱葱,文海家,等.软土路基透明相似材料最优配比联合设计方法[J].长安大学学报(自然科学版),2025,45(4):29-38.[doi:10.19721/j.cnki.1671-8879.2025.04.003]
　YANG Jin-bo,LI Cong-cong,WEN Hai-jia,et al.Integrated design method of optimal mix proportion of transparent similar materials for soft soil subgrade[J].Journal of Chang’an University (Natural Science Edition),2025,45(4):29-38.[doi:10.19721/j.cnki.1671-8879.2025.04.003]
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软土路基透明相似材料最优配比联合设计方法()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第45卷
期数:
2025年4期
页码:
29-38
栏目:
道路工程
出版日期:
2025-07-30

文章信息/Info

Title:
Integrated design method of optimal mix proportion of transparent similar materials for soft soil subgrade
文章编号:
1671-8879(2025)04-0029-10
作者:
杨进博1; 2; 李葱葱3; 文海家4; 李良勇3; 谢 朋3; 黄 斌3
(1. 长安大学 建筑工程学院,陕西 西安 710064; 2. 长安大学 基建处,陕西 西安 710064; 3. 海南大学 土木建筑工程学院,海南 海口 570228; 4. 重庆大学 土木工程学院,重庆 400045)
Author(s):
YANG Jin-bo1; 2;  LI Cong-cong3;  WEN Hai-jia4;  LI Liang-yong3;  XIE Peng3;  HUANG Bin3
(1. School of Civil Engineering, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Capital Construction Department, Chang'an University, Xi'an 710064, Shaanxi, China; 3. School of Civil Engineering and Architecture, Hainan University, Haikou 570228, Hainan, China; 4. School of Civil Engineering, Chongqing University, Chongqing 400045, China)
关键词:
路基工程;  透明相似材料;  最优配比;  线性回归分析;  支持向量回归;  联合设计方法
Keywords:
subgrade engineering;  transparent similar material;  optimal mix proportion;  linear regression analysis;  support vector regression;  integrated design method
分类号:
U416.1
DOI:
10.19721/j.cnki.1671-8879.2025.04.003
文献标志码:
A
摘要:
以所配制相似材料试样正交试验数据为基础,将多元线性回归和支持向量回归(SVR)相结合,研发了一种新型软土路基透明相似材料最优配比联合设计方法; 选取重度、内摩擦角和黏聚力为材料物理力学性能评价指标,以石英砂粒径和胶石比(纳米级白炭黑与石英砂质量比)为影响因素,设计了二因素三水平正交试验方案; 通过环刀试验和固结快剪试验测定了透明胶结土试样的物理力学性能评价指标,以材料物理参数、强度特性和变形特征为切入点,验证了所配制透明相似材料用于模拟天然软土材料的可行性; 按照2:8的比例随机划分了测定的试验数据,应用其中20%的数据进行了多元线性回归方程组拟合,将剩余80%的数据用于机器学习,以量化计算最优配比; 建立了最优配比有效性检验的SVR评价模型,搭建了软土透明相似材料最优配比联合设计方法; 以广东省某实际工程为依托,完成了搭建方法的应用,实现了所配制透明相似材料与原状土参数的高度契合。研究结果表明:透明胶结土的重度、内摩擦角和黏聚力分别为12.53～16.13 kN/m3、14.82°～27.07°和2.3～31.0 kPa,归一化强度演化路径与天然软土应力-应变响应具有本构相似性,所配制的透明胶结土可有效模拟天然软土; 石英砂粒径和胶石比对重度、内摩擦角和黏聚力影响显著,重度、内摩擦角和黏聚力的变化均可由石英砂粒径和胶石比进行有效表达; 建立的SVR评价模型对重度、内摩擦角和黏聚力的拟合优度分别为0.980 4、0.979 6和0.999 7。研究结果可为软土路基相关可视化模型试验设计与实施提供理论支撑。
Abstract:
Based on the orthogonal test data of the configured similar material samples, a new integrated design method for the optimal mix proportion of transparent similar materials for soft soil subgrade was developed by combining the multiple linear regression and support vector regression(SVR). The unit weight, internal friction angle and cohesion were selected as the evaluation indexes of physical and mechanical properties of the material. The particle size of quartz sand and ratio of rubber to stone(the mass ratio of nano-silica to quartz sand)were selected as influencing factors. The orthogonal test scheme with two factors and three levels was designed. The evaluation indexes of physical and mechanical properties of transparent cemented soil samples were determined by the ring sampler test and consolidated quick direct shear test. Taking the physical parameters, strength characteristics and deformation characteristics of the material as the entry point, the feasibility of the transparent similar material configured to simulate the natural soft soil material was verified. The test data were randomly divided according to the ratio of 2:8, and 20% of the data were used to fit the multiple linear regression equations. The remaining 80% of the data were used for machine learning to quantify the optimal mix proportion. The SVR evaluation model of the optimal mix proportion validity test was constructed, and the integrated design method for the optimal mix proportion of transparent similar materials for soft soil was established. Based on a practical project in Guangdong Province, the application of the established method was completed, and the transparent similar material was highly consistent with the parameters of the undisturbed soil. The research results show that the unit weight, internal friction angle and cohesion of the transparent cemented soil are 12.53-16.13 kN/m3, 14.82°-27.07° and 2.3-31.0 kPa, respectively. The normalized strength evolution path has constitutive similarity with the stress-strain response of natural soft soil. The configured transparent cemented soil can effectively simulate the natural soft soil. The particle size of quartz sand and the ratio of rubber to stone have significant effects on the unit weight, internal friction angle and cohesion. The changes in the unit weight, internal friction angle and cohesion can be effectively expressed by the particle size of quartz sand and the ratio of rubber to stone. The fitting goodnesses of the established SVR evaluation model for the unit weight, internal friction angle and cohesion are 0.980 4, 0.979 6 and 0.999 7, respectively. The research results can provide theoretical supports for the design and implementation of visual model tests related to soft soil subgrade.9 tabs, 11 figs, 30 refs.

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备注/Memo

备注/Memo:
收稿日期:2025-01-10
基金项目:国家自然科学基金项目(42207190); 海南省高层次人才项目(422RC599); 海南省自然科学基金项目(520QN229); 省部共建交通工程结构力学行为与系统安全国家重点实验室开放课题(KF2022-03)
作者简介:杨进博(1987-),男,陕西西安人,工程师,E-mail:yanglengyan@163.com。
通信作者:谢 朋(1986-),男,河北承德人,讲师,工学博士,E-mail:Peng_xie@hainanu.edu.cn。
更新日期/Last Update: 2025-07-25