高铁荷载下桩-土复合路基地面振动3维有限元分析（英文）
发布时间：2022-01-22 11:38
桩-土复合路基广泛应用于我国高速铁路工程建设。为研究高速列车运行引起的桩-土复合路基地面振动,本文建立了包含桩体、桩帽和垫层在内的复合路基3维有限元模型,通过与现场实测数据对比验证了模型的有效性。在此基础上,分析了不同车速高铁荷载作用下地面振动及其与轨道中心间距的衰减规律。此外,还研究了桩基及桩体弹性模量对地面振动的影响。研究表明,复合路基中桩体的加固能有效减小地面振动;另外,减振效果随着桩体弹性模量的增加而增大。然而,当桩体弹性模量超过10 GPa时,进一步增大弹性模量就不再明显增加地面振动的减振效果。
【文章来源】：Journal of Central South University. 2020,27(08)EISCICSCD
【文章页数】：10 页
【文章目录】：
1 Introduction
2 Modelling approach and validation
2.1 Mathematical description of train loading
2.2 Model development
2.3 Validation
3 Results and discussions
3.1 Ground vibrations at different train speeds
3.2 Variation of ground vibrations with distance to track centerline
3.3 Ground vibration mitigation with piles
3.4 Vibrations of ground reinforced by piles with different pile elastic moduli
4 Conclusions
【参考文献】：
期刊论文
[1]Model tests on XCC-piled embankment under dynamic train load of high-speed railways[J]. Niu Tingting,Liu Hanlong,Ding Xuanming,Zheng Changjie. Earthquake Engineering and Engineering Vibration. 2018(03)
[2]Seismic response analysis of GRPS embankment under oblique incident P wave[J]. 郜新军,钱辉,郭院成,王非. Journal of Central South University. 2016(03)
[3]Numerical investigation of piled raft foundation in mitigating embankment vibrations induced by high-speed trains[J]. 付强,刘汉龙,丁选明,郑长杰. Journal of Central South University. 2015(11)
[4]A 2.5D finite element approach for predicting ground vibrations generated by vertical track irregularities[J]. Xue-cheng BIAN,Chang CHAO,Wan-feng JIN,Yun-min CHEN (MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering,Department of Civil Engineering,Zhejiang University,Hangzhou 310058,China). Journal of Zhejiang University-Science A（Applied Physics & Engineering）. 2011(12)
本文编号：3602130
【文章来源】：Journal of Central South University. 2020,27(08)EISCICSCD
【文章页数】：10 页
【文章目录】：
1 Introduction
2 Modelling approach and validation
2.1 Mathematical description of train loading
2.2 Model development
2.3 Validation
3 Results and discussions
3.1 Ground vibrations at different train speeds
3.2 Variation of ground vibrations with distance to track centerline
3.3 Ground vibration mitigation with piles
3.4 Vibrations of ground reinforced by piles with different pile elastic moduli
4 Conclusions
【参考文献】：
期刊论文
[1]Model tests on XCC-piled embankment under dynamic train load of high-speed railways[J]. Niu Tingting,Liu Hanlong,Ding Xuanming,Zheng Changjie. Earthquake Engineering and Engineering Vibration. 2018(03)
[2]Seismic response analysis of GRPS embankment under oblique incident P wave[J]. 郜新军,钱辉,郭院成,王非. Journal of Central South University. 2016(03)
[3]Numerical investigation of piled raft foundation in mitigating embankment vibrations induced by high-speed trains[J]. 付强,刘汉龙,丁选明,郑长杰. Journal of Central South University. 2015(11)
[4]A 2.5D finite element approach for predicting ground vibrations generated by vertical track irregularities[J]. Xue-cheng BIAN,Chang CHAO,Wan-feng JIN,Yun-min CHEN (MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering,Department of Civil Engineering,Zhejiang University,Hangzhou 310058,China). Journal of Zhejiang University-Science A（Applied Physics & Engineering）. 2011(12)
本文编号：3602130
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