轨道平顺性与土动力特性对地铁隧道振动的影响

韦凯; 翟婉明; 肖军华

doi:10.3969/j.issn.0258-2724.2013.06.004

轨道平顺性与土动力特性对地铁隧道振动的影响

doi: 10.3969/j.issn.0258-2724.2013.06.004

基金项目:

国家自然科学基金青年科学基金资助项目（51008257，51008158）

中国博士后科学基金特别资助项目（201104699）

四川省科技支撑计划资助项目（2011GZ0088）

详细信息

作者简介:
韦凯（1980-），男，副研究员，研究方向为轨道交通系统动力学，电话：13550198099，E-mail：wei_mike@163.com

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出版历程
- 收稿日期: 2012-12-11
- 刊出日期: 2013-12-25

Influence of Track Regularity and Soil Dynamic Characteristics on Vibration of Subway Tunnel

摘要

摘要: 为精确计算列车动荷载作用下软土地铁盾构隧道频域振动响应，考虑地基动刚度随应变频响的非线性变化，建立了车辆/轨道/隧道/软土地基的垂向耦合动力学模型，研究了不同轨道平顺等级下软土动刚度随应变频响非线性变化对地铁盾构隧道随机振动的影响规律.研究结果表明：随着轨道平顺性的恶化，地基动刚度随应变频响非线性的变化将引起地铁盾构隧道各频段内的振动加速度级出现明显的非均匀变化；轨道不平顺恶化后，软土地基动刚度的非线性将改变地铁盾构隧道频域振动幅值大小，且其对应频率会出现约有0.2 Hz的偏移，致使地铁盾构隧道频域振动能量出现重分布现象.
- 盾构隧道 /
- 软土 /
- 动刚度 /
- 轨道谱 /
- 随机振动
Abstract: In order to accurately calculate the frequency-domain vibration response of a subway shield tunnel due to dynamic loading of trains, a vertical coupling dynamic model of subway shield tunnel is established to study the influence of the nonlinear variation of soft-soil dynamic stiffness on the random vibration of subway shield tunnel at different levels of track irregularity. In this model, the dynamic stiffness of soft soil varies nonlinearly with the frequency-domain response of soft soil strain. The results show that along with the deterioration of track regularity, the nonlinear dynamic stiffness of soft soil causes obvious heterogeneous variations to the vibration accelerations in frequency domains of the subway shield tunnel. In addition, the nonlinear dynamic stiffness of soft soil not only alters the frequency-domain vibration amplitude of subway shield tunnel after the deterioration of track irregularity, but also makes the corresponding frequencies appear to shift, and the biggest deviation is about 0.2 Hz, which leads to a redistribution of the vibration energy of the subway shield tunnel in frequency domain.
- shield tunnel /
- soft soil /
- dynamic stiffness /
- track spectrum /
- random vibration

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参考文献(34)

袁晓铭, 孙锐, 孙静, 等. 常规土类动剪切模量和阻尼比试验研究

[J]. 地震工程与工程振动, 2000, 20(4): 133-139. YUAN Xiaoming, SUN Yue, SUN Jing, et al. Laboratory experimental study on dynamic shear modulus ratio and damping ratio of soil

孙静. 岩土动剪切模量阻尼试验及应用研究. 哈尔滨:中国地震局工程力学研究所, 2004.

[J]. Earthquake Engineering and Engineering Vibration, 2000, 20(4): 133-139.

郭中华, 余湘娟, 严蕴. 循环荷载作用下软土计算模型初探

刘晓红. 高速铁路无砟轨道红黏土路基动力稳定性研究

张曦, 唐益群, 周念清, 等. 地铁振动荷载作用下隧道周围饱和软黏土动力响应研究

[J]. 河海大学学报:自然科学版, 2002, 30(1): 109-112. GUO Zhonghua, YU Xiangjuan, YAN Yun. Discussion on calculation model for soft soil under cyclic loading

楼梦麟, 贾旭鹏, 俞洁勤. 地铁运行引起的地面振动实测及传播规律分析

李明宇, 刘国彬, 胡蒙达, 等. 运营地铁盾构隧道结构振动响应实测分析

[J]. Journal of Hohai University:Natural Science, 2002, 30(1): 109-112.

李克飞, 刘维宁, 孙晓静等. 北京地铁5号线地下线减振措施现场测试与分析

DEGRANDE G, SCHEVENELS M, CHATTERJEE P, et al. Vibration due to a test train at variable speeds in a deep bored tunnel embedded in London clay

[D]. 长沙:中南大学, 2011.

GUPTA S, DEGRANDE G, LOMBAERT G. Experimental validation of a numerical model for subway induced vibrations

翟婉明. 车辆-轨道耦合动力学

[J]. 土木工程学报, 2007, 40(2): 85-88. ZHANG Xi, TANG Yiquan, ZHOU Nianqing, et al. Dynamic response of saturated soft clay around a subway tunnel under vibration load

高志兵, 高玉峰, 谭慧明. 饱和黏性土最大剪切模量的室内和原位试验对比研究

[J]. China Civil Engineering Journal, 2007, 40(2): 85-88.

陈伟庆, 孔书祥. 土力学

陈国兴. 岩土地震工程学

[J]. 防灾减灾工程学报, 2009, 29(3): 282-288. LOU Menglin, JIA Xupeng, YU Jieqin. Field measurement and analysis of ground vibration induced by subway trains

[J]. Journal of Disaster Prevention and Mitigation Engineering, 2009, 29(3): 282-288.

[J]. 铁道学报, 2011, 33(6): 88-93. LI Mingyu, LIU Guobin, HU Mengda, et al. Field measurement and analysis of structural vibration response in the metro shield tunnel

[J]. Journal of the China Railway Society, 2011, 33(6): 88-93.

[J]. 铁道学报, 2011, 33(4): 112-118. LI Kefei, LIU Weining, SUN Xiaojing, et al. In-situ test of vibration attenuation of underground line of Beijing metro line 5

[J]. Journal of the China Railway Society, 2011, 33(4): 112-118.

[J]. Journal of Sound and Vibration, 2006, 293: 626-644.

[J]. Journal of Sound and Vibration, 2009, 321: 786-812.

[M]. 3版.北京:科学出版社, 2007: 26-38.

[J]. 岩土工程学报, 2010, 32(5): 731-735. GAO Zhibing, GAO Yufeng, TAN Huiming. Lab and in-situ tests on maximum dynamic shear modulus of saturated clay soils

[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(5): 731-735.

[M]. 北京:中国铁道出版社, 2002: 30-33.

[M]. 北京:科学出版社, 2007: 164-165.

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