列车运行引起的CFG桩复合路基动力响应分析

摘要
图/表
参考文献(26)
相关文章 (15)

全文: PDF (2689 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要结合上部列车-轨道模型与下部有限元路基模型，建立了列车-轨道-路基整体动力分析模型，分析了CFG复合路基对地面振动的影响。列车采用多质点弹簧-阻尼器模拟，钢轨采用欧拉梁模拟并考虑了钢轨随机不平顺影响，列车-轨道体系采用振型分解法求解；铁路路基经有限元离散后采用2.5维有限元方法求解，采用粘滞阻尼吸波边界减小边界反射，CFG桩采用等代模量桩墙模拟。分析了CFG桩复合路基对地面振动衰减和振动频谱的影响。结果表明：CFG桩复合路基对地面振动的影响分为CFG桩体的影响和垫层影响；CFG桩体对路基中的高频振动有波导作用，可减小远离路堤的高频振动；复合路基垫层可降低中低频振动。CFG复合路基减小了路堤边缘的高频振动，提高了路堤边坡的动力稳定性。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	高广运1
	2
	李绍毅1
	2

关键词 ：地面振动, CFG桩复合路基, 频谱分析, 2.5维有限元, 波导作用

Abstract：

The train-track-subgrade numerical model is established including the upper train-track model and the under subgrade FE model to analyze the ground vibration of the CFG pile composite subgrade. The train is simulated by the multiple mass-spring-damper model. The track is modeled by Euler beam with consideration of random rail irregularities. The train-track model is solved by the modal analysis method. The railway subgrade is discretized and solved by 2.5D FEM with a viscous damping absorbing boundary to reduce the reflection wave. The CFG pile is modeled by pile wall with modified elastic modulus. The influences of the CFG pile composite subgrade on ground vibration attenuation and vibration frequency spectrum are discussed. The results show that The influence of CFG pile composite subgrade on the ground vibration is comprised of the influence of CFG pile and the influence of cushion. The CFG pile has the waveguide effect on the high frequency vibration and reduces the high frequency vibration from the embankment; the cushion of the composite subgrade affects the ground vibration by reducing the low and medium frequency vibration. Besides the composite subgrade reduces the high frequency vibration at the edge of embankment, that improves the dynamic stability of the slope of embankment.

Key words： ground vibration CFG pile composite subgrade spectral analysis 2.5D FEM waveguide effect

收稿日期: 2014-10-10 出版日期: 2015-12-25

引用本文:

高广运1,2，李绍毅1,2. 列车运行引起的CFG桩复合路基动力响应分析[J]. 振动与冲击, 2015, 34(24): 135-143.
GAO Guanyun1,2，LI Shaoyi1,2 . Dynamic response of CFG pile composite subgrade induced by moving train loadings. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(24): 135-143.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I24/135

[1]　Xia H, Zhang N, Cao Y M. Experimental study of train-induced vibrations of environments and buildings[J]. Journal of Sound and Vibration, 2005, 280(3): 1017-1029.
[2]　Eason, G. The stresses produced in a semi-infinite solid by a moving surface force[J]. International Journal of Engineering Sciences, 1962, 2: 581–609.
[3]　Metrikine A V, Dieterman H A. Lateral vibrations of an axially compressed beam on an elastic half-space due to a moving lateral load[J]. European Journal of Mechanics-A/Solids, 1999, 18(1): 147-158.
[4]　Dinkel J, Grundmann H. Winkler parameters for railway dynamics derived from 3-D half space analysis[C]//Fourth European Conference on Structural Dynamics: EURODYN'99. 1999: 831-836.
[5]　Yang Y B, Hung H H. A 2.5 D finite/infinite element approach for modelling visco-elastic bodies subjected to moving loads[J]. International Journal for Numerical Methods in Engineering, 2001, 51(11): 1317-1336.
[6]　边学成，陈云敏. 基于 2.5 维有限元方法分析列车荷载产生的地基波动[J]. 岩石力学与工程学报，2006，25(11): 2335-2342.
BIAN Xuechen, CHEN Yunming. Ground vibration generated by train moving loadings using 2.5D finite element method[J].Chinese Journal of Rock Mechanics and Engineering, 2006, 25(11): 2335-2342.
[7]　Gao G Y, Chen Q S, He J F, et al. Investigation of ground vibration due to trains moving on saturated multi-layered ground by 2.5 D finite element method[J]. Soil Dynamics and Earthquake Engineering, 2012, 40: 87-98.
[8]　Kouroussis G, Conti C, Verlinden O. Investigating the influence of soil properties on railway traffic vibration using a numerical model[J]. Vehicle System Dynamics, 2013, 51(3): 421-442.
[9]　李佳，高广运，赵宏. 基于 2.5 维有限元法分析横观各向同性地基上列车运行引起的地面振动[J]. 岩石力学与工程学报，2013，32(1): 78-87.
LI Jia, GAO Guangyun, ZHAO Hong. Study of ground vibration induced by train load in transversely isotropic soil using 2.5D finite element method[J].Chinese Journal of Rock Mechanics and Engineering,2013, 32(1): 78-87.
[10]　龚晓南. 复合地基理论及工程应用[M]. 北京: 中国建筑工业出版社，2002年11月.
GONG Xiaonan. The theory and application of composite foundation[M]. Beijing: China Building Industry Press, 2002
[11]　Thach P N, Liu H L, Kong G Q. Evaluation of PCC pile method in mitigating embankment vibrations from high-speed train[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2013, 139(12): 2225-2228.
[12]　Thach P N, Liu H L, Kong G Q. Vibration analysis of pile-supported embankments under high-speed train passage[J]. Soil Dynamics and Earthquake Engineering, 2013, 55: 92-99.
[13]　王维玉，赵拓，丁继辉. CFG桩复合地基动力特性和时程响应影响因素分析[J]. 岩土工程学报，2010，2: 115-118.
WANG Wei-yu, ZHAO Tuo, DING Ji-hui. Influencing factors of dynamic characteristics and response of cement-fly ash-gravel pile composite foundation[J]. Chinese Journal of Geotechnical Engineering,2010,2:115-118.
[14]　屈畅姿，王永和，魏丽敏，等. 武广高速铁路路基振动现场测试与分析[J]. 岩土力学，2012, 33(5): 1451-61.
QU Chang-zi, WANG Yong-he, WEI Li-min, et al. In-situ test and analysis of vibration of subgrade for Wuhan- Guangzhou high-speed railway[J]. Rock and soil mechanics, 2012, 33(5): 1451-1461.
[15]　刘丽萍，黄义，李向阳. 板-复合地基动力分析半解析元法[J]. 岩土力学，2007，28(4): 753-757.
LIU Li-ping, HUANG Yi, LI Xiang-yang. A semi-analytical method for dynamical analysis of slab and composite foundation[J].Rock and Soil Mechanics, 2007, 28(4): 753-757.
[16]　康文生. 高速铁路低矮路堤灰土桩复合地基的动力特性分析[J]. 路基工程，2012，(3): 36-38.
KANG Wen-sheng. Analysis on dynamic characteristics of lime-soil pile composite foundation of low embankment along high-speed railway[J]. Subgrade Engineering,2012, (3): 36-38.
[17]　韩海燕. 软土路基上高速列车引起地面振动的数值模拟分析[D]. 西南交通大学, 2012.
HAN Haiyan. Numerical simulation of ground-borne vibration due to high-speed train on soft foundation[D]. Southwest Jiao Tong University, 2012.
[18]　Kouroussis G, Verlinden O, Conti C. Free field vibrations caused by high-speed lines: Measurement and time domain simulation[J]. Soil Dynamics and Earthquake Engineering, 2011, 31(4): 692-707.
[19]　李广慧.车辆-无碴轨道-桥梁系统振动特性及其应用[M]. 河南: 黄河水利出版社，2007.
LI Guang-hui. The vibration characteristics of vehicle-Ballastless track-bridge system and its application[M]. Henan: The Yellow River Water Conservancy Press, 2007.
[20]　Kouroussis G, Verlinden O, Conti C, Finite-dynamic model for infinite media: corrected solution of viscous boundary efficiency[J]. Eng. Mech. ASCE, 2011, 137(7) 509-511.
[21]　罗震. 高速铁路无砟轨道结构受力及轮轨动力作用分析[D]. 西南交通大学，2008.
LUO Zhen. Analysis of structure mechanics and wheel/rail dynamic interaction of ballast-less track in high-speed railway[D]. Southwest Jiaotong University, 2008.
[22]　Connolly D, Giannopoulos A, Forde M C. Numerical modelling of ground borne vibrations from high speed rail lines on embankments[J]. Soil Dynamics and Earthquake Engineering, 2013, 46: 13-19.
[23]　王漾，周萌，宫全美，等. 高速铁路CFG桩网复合结构设计参数分析[J]. 华东交通大学学报，2011，27(6): 17-22.
WANG Yang, ZHOU Meng, GONG Quanmei, et al. An analysis on design parameters of CFG pile-net composite structure of high-speed railway[J]. Journal of East China Jiaotong University, 2011, 27(6): 17-22.
[24]　Krylov V V. Effects of the embankment topography and track curvature on ground vibration boom from high-speed trains[J]. Proceedings of the Symposium EURODYN, 2002: 473-478.
[25]　Takemiya H. Vibration propagation and mitigation for a pile-supported foundation by honeycomb-shaped WIB[J]. Proceedings of Environment Vibration: Prediction, Monitoring and Evaluation, Hangzhou, 2003: 267-290.
[26]　高广运，陈功奇，张博. 列车荷载下竖向非均匀地基波阻板主动隔振分析[J]. 振动与冲击，2013，32(22): 57-62.
GAO Guang-yun, CHEN Gong-qi, ZHANG Bo. Active vibration isolation using WIB in non-uniform ground under train loadings[J]. Journal of Vibration and Shock, 2013, 32(22): 57-62.