重载铁路路基足尺模型试验研究

冷伍明1,2,梅慧浩1,2,聂如松1,2,刘文劼1,2,粟雨1,2,唐盛米1,2

振动与冲击 ›› 2018, Vol. 37 ›› Issue (4) : 1-6.

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (4) : 1-6.
论文

重载铁路路基足尺模型试验研究

  • 冷伍明1,2,梅慧浩1,2,聂如松1,2,刘文劼1,2,粟雨1,2,唐盛米1,2
作者信息 +

Research on full-scale model test of heavy haul railway subgrade

  • LENG Wu-ming1,2,MEI Hui-hao1,2,NIE Ru-song1,2,LIU Wen-jie1,2,SU-Yu1,2,TANG Sheng-mi1,2
Author information +
文章历史 +

摘要

以朔黄重载铁路为工程背景,通过构建重载列车模拟加载系统和路基足尺模型,开展路基动力响应试验,分析了在循环加载条件下路基的动力响应特性。试验结果表明,路基中不同深度动应力峰值均随着轴重的增加而增加,轴重越大,动应力的影响深度越大,路基中动应力随深度的增加呈负指数衰减趋势。路肩处动位移峰值随轴重的增加而线性增加。当轴重增加到30t后,路基达到临界破坏状态,可见按照原朔黄铁路路基建造标准,其最大运行列车轴重约为27t,如再增加列车轴重,路基需预先采取强化措施。试验结果对建造运行列车模拟加载系统及足尺路基模型具有借鉴参考意义,同时有助于深刻理解列车轴重对路基动力响应特性的影响。

Abstract

Based on Shuo-Huang heavy haul railway, dynamic response tests are carried out through establishing the simulated loading system of heavy haul train and full-scale model of heavy haul railway subgrade, the dynamic response characteristics of subgrade subjected to cyclic loadings are analyzed. The result indicates that with increasing axle load the dynamic stress peaks at different depths in the subgrade also increase. The larger the axle load, the greater the depth influenced by dynamic stress. There is negative exponential function between dynamic stress peak and depth in subgrade. With increasing axle load the dynamic displacement peaks at the top surface of sleeper nonlinearly increase. When axle load increases to 30t, the subgrade comes to critical failure state. This shows that by construction standard of Shuo-Huang railway subgrade, the maximum allowable axle load is about 27t, if increasing axle load, strengthening measures should be taken to subgrade preliminarily. The testing results have some reference for establishing simulated loading system of moving train and full-scale subgrade model. Meanwhile, the testing results provide better understanding of the influence of train axle load on the response of subgrade.

关键词

重载铁路 / 路基 / 足尺模型 / 轴重 / 动应力

Key words

 heavy haul railway / subgrade / full-scale model / axle load / dynamic stress

引用本文

导出引用
冷伍明1,2,梅慧浩1,2,聂如松1,2,刘文劼1,2,粟雨1,2,唐盛米1,2. 重载铁路路基足尺模型试验研究[J]. 振动与冲击, 2018, 37(4): 1-6
LENG Wu-ming1,2,MEI Hui-hao1,2,NIE Ru-song1,2,LIU Wen-jie1,2,SU-Yu1,2,TANG Sheng-mi1,2. Research on full-scale model test of heavy haul railway subgrade[J]. Journal of Vibration and Shock, 2018, 37(4): 1-6

参考文献

[1] Sunaga, Makoto. Vibration behavior of roadbed on soft grounds under train load[J]. Quartly Report of RTRI, 1990, 2(31):29-35.
[2] 詹永祥,蒋关鲁,胡安华,等.遂渝线无碴轨道桩板结构路基动力响应现场试验研究[J]. 岩土力学,2009,30(3):832-835.
ZHAN Yong-xiang, JIANG Guan-lu, HU An-hua, et al. Study of dynamic response of pile-plank embankment of ballastless track based on field test in Suining-Chongqing High-speed Railway[J].Rock and Soil Mechanics, 2009,30(3):832-835.
[3] 康高亮,刘丙强,柯在田.大秦线2万T货物列车条件下线桥设备试验研究[J].中国铁道科学,2008,29(6):35-40.
KANG Gao-liang, LIU Bing-qiang, KE Zai-tian. Test study on track bridge and subgrade equipment of Datong-Qinhuangdao Railway under 20000t freight trains[J]. China Railway Science, 2008,29(6):35-40.
[4] SHAER A A, DUHAMEL D, SAB K, et al. Experimental settlement and dynamic behavior of a portion of ballasted railway track under high speed trains[J]. JOURNAL OF SOUND AND VIBRATION, 2008, 316(1-5): 211-233.
[5] TATSUYA ISHIKAWA, ETSUO SEKINE, SEIICHI MIURA. Cyclic deformation of granular material subjected to moving-wheel loads[J]. CANADIAN GEOTECHNICAL JOURNAL, 2011,48 (5): 691-703.
[6] 边学成,蒋红光,金皖锋,等. 板式轨道-路基相互作用及荷载传递规律的物理模型试验研究[J]. 岩土工程学报,2012(8):1488-1495.
BIAN Xue-cheng, JIANG Hong-guang, JIN Wan-feng, et al. Full-scale model tests on slab track-subgrade interaction and load transfer in track system[J]. Chinese Journal of Geotechnical Engineering, 2012(8):1488-1495.
[7] 董云,阎宗岭.土石混填路基沉降变形特征的二维力学模型试验研究[J]. 岩土工程学报,2007,29(6):943-947.
DONG Yun,YAN Zong-ling. 2D mechanical model tests on settlement of rock-soil filled roadbed[J].Chinese Journal of Geotechnical Engineering, 2007, 29(6):943-947.
[8] 陈爱云,郭建湖.武广客运专线软岩填筑路基的模型试验研究[J]. 岩土力学,2008,29(10):2882-2886.
CHEN Ai-yun, GUO Jian-hu. Research on model test of soft rock roadbed in special passenger railway line of Wuhan-Guangzhou[J].Rock and Soil Mechanics, 2008, 29(10):2882-2886.
[9] 詹永祥,蒋关鲁.无碴轨道路基基床动力特性的研究[J]. 岩土力学,2010,31(2):392-396.
ZHAN Yong-xiang, JIANG Guan-lu. Study of dynamic characteristics of soil subgrade bed for ballastless track[J].Rock and Soil Mechanics, 2010, 31(2):392-396.
[10] 练松良.轨道工程[M].北京:人民交通出版社,2009.
[11] 中华人民共和国铁道部.TB10102-2010,铁路工程土工试验规程[S]. 北京:中国铁道出版社,2010.
Ministry of Railways of the People′s Republic of China. Code for soil test of railway engineering, TB 10102-2010, J 1135-2010. China Railway Publishing House;2010.
[12] 朔黄铁路发展有限责任公司.重载铁路运行条件下路基快速加固指南[M].北京:中国铁道出版社,2015.
[13] 赵欣.大秦线重载铁路路基质量评估理论与方法的研究[D].北京:北京交通大学,2011.
[14] 薛继连.重载铁路路基状态检测与强化技术[M].北京:科学出版社,2014.
[15] BIAN XC, JIANG HG, CHENG C, CHEN YM, CHEN RP, JIANG JQ. Full-scale model testing on a ballastless high-speed railway under simulated train moving load[J]. SOIL DYN EARTHQ ENG 2014:66:368-384.

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