吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (5): 1742-1748.doi: 10.13229/j.cnki.jdxbgxb20200455
• 交通运输工程·土木工程 • 上一篇
Yuan-qiang CAI1,2(),Shu-hao YAN1,Zhi-gang CAO1(),Fu-you LI3
摘要:
为研究粉质黏土路基翻浆冒泥发生规律,自主研制了一套路基翻浆冒泥模型试验装置。模型中路基层分别采用级配碎石与粉质黏土进行填筑,试验研究了交通循环荷载下路基中孔压累积、翻浆冒泥与沉降发展全过程,分析了粉质黏土地基土体成分、孔隙比等对路基翻浆冒泥的影响规律。研究表明:交通循环荷载下地基内部孔隙水压逐渐累积,当地基中有效应力为零时出现瞬态液化并发生翻浆冒泥现象。针对易发生翻浆冒泥的粉质黏土地基,试验发现黏粒含量与孔隙比是影响路基翻浆冒泥的重要参数;黏粒含量增加将使地基中孔压累积,进而发生翻浆冒泥现象;而同样黏粒含量下,地基孔隙比减小将使路基翻浆冒泥现象受到抑制。基于试验结果,在塑性指数和孔隙比坐标系下提出了地基翻浆冒泥的判别参考准则,当塑性指数与孔隙比位于该判定准则上方时,可初步判定路基易发生翻浆冒泥。本文研究可为交通荷载下道路翻浆冒泥评价与控制提供参考。
中图分类号:
1 | Alobaidi I, Hoare D. Factors affecting the pumping of fines at the subgrade subbase interface of highway pavements: a laboratory study[J]. Geosynthetics International, 1994, 1(2): 221-259. |
2 | Alobaidi I, Hoare D J. Mechanisms of pumping at the subgrade-subbase interface of highway pavements[J]. Geosynthetics International, 1999, 6(4):241-259. |
3 | Wang T F, Luo Q, Liu M, et al. Physical modeling of train-induced mud pumping in substructure beneath ballastless slab track[J]. Transportation Geotechnics, 2020, 23: 100332. |
4 | Shahu J T, hayashi S. Mud pumping problem in tunnels on erosive soil deposits[J]. Géotechnique, 2000, 50(4): 393-408. |
5 | Duong T V, Cui Y J, Tang A M, et al. Investigating the mud pumping and interlayer creation phenomena in railway sub-structure[J]. Engineering Geology, 2014, 171: 45-58. |
6 | Duong T V, Cui Y J, Tang A M, et al. Physical model for studying the migration of fine particles in the railway substructure[J]. Geotechnical Testing Journal, 2014, 37(5): 20130145. |
7 | Chawla S, Shahu J T. Reinforcement and mud-pumping benefits of geosynthetics in railway tracks: numerical analysis[J]. Geotextiles and Geomembranes, 2016, 44(3): 344-357. |
8 | 凌建明, 陈卉, 钱劲松, 等. 湿度有限波动下非饱和黏土路基动态回弹模量[J]. 吉林大学学报: 工学版,2020, 50(2): 613-620. |
Ling Jian-ming, Chen Hui, Qian Jin-song, et al, Dynamic resilient modulus for unsaturated clay soils under considering effect of limited moisture content fluctuation[J]. Journal of Jilin University(Engineering and Technology Edition), 2020, 50(2): 613-620. | |
9 | 王静, 吕翔, 曲肖龙, 等. 路基土抗剪强度与化学及矿物成分的关系[J]. 吉林大学学报: 工学版, 2019, 49(3): 766-772. |
Wang Jing, Lyu Xiang, Qu Xiao-long, et al. Analysis of relationship between subgrade soil shear strength and chemical and minerals component[J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(3): 766-772. | |
10 | 聂如松, 冷伍明, 粟雨, 等. 基床翻浆冒泥土的物理力学性质[J]. 西南交通大学学报, 2018, 53(2): 286-295. |
Nie Ru-song, Leng Wu-ming, Su Yu, et al. The physical and mechanical properties of mud pumping soils in railway subgrade bed[J]. Journal of Southwest Jiaotong University, 2018, 53(2): 286-295. | |
11 | 冷伍明, 粟雨, 滕继东, 等. 易发生翻浆冒泥的细粒土物理状态指标分析与评判[J]. 铁道学报, 2018, 40(1): 116-122. |
Leng Wu-ming, Su Yu, Teng Ji-dong, et al. Analysis and evaluation on physical characteristics of fine-grained soils prone to mud pumping[J]. Journal of the China Railway Society, 2018, 40(1): 116-122. | |
12 | 赵满庆. 裂隙土基床病害整治研究[D]. 成都: 西南交通大学土木工程学院, 2002. |
Zhao Man-qing. Investigation on the disease of road base on fissured soil[D]. Chengdu: College of Civil Engineering, Southwest Jiaotong University, 2002. | |
13 | 易波. 电阻率层析成像技术在阳安铁路翻浆冒泥探测中的应用[J]. 路基工程, 2013(6): 150-155. |
Yi Bo. Appliaction of resistivity tomography in detection of mud pumping along yangpingguan-ankang railway[J]. Subgrade Engineering, 2013(6): 150-155. | |
14 | 葛如生. 阳安线基床病害整治[D]. 成都: 西南交通大学土木工程学院, 2003. |
Ge Ru-sheng. The treatment of disease of road base at Yang-An highway line[D]. Chengdu: College of Civil Engineering, Southwest Jiaotong University, 2003. |
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