高速列车荷载作用下X形桩桩网复合地基累积沉降研究

doi:10.13722/j.cnki.jrme.2023.0372

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摘要为了研究高速列车荷载作用下桩网复合地基累积沉降的发展规律，建立大比例尺X形桩桩网复合地基模型，开展一系列模型试验，探索X形桩桩网复合地基累积沉降的发展规律。结果表明：在循环振动20 000次之后，相邻四桩中心处累积沉降最大，轨道板上沉降次之，桩顶沉降最小；相邻四桩之间“网兜效应”显著。随着循环加载次数的增加，各测点处累积沉降均在不断增大；当加载频率≤15 Hz时，在循环振动10 000次后，各测点处累积沉降曲线逐渐变得平缓，沉降速率逐渐变小；当加载频率≥25 Hz时，随循环加载次数的增加，轨道板上累积沉降曲线几乎没有变缓的趋势，且累积沉降增长的速率较快。随着加载频率的增大，各测点处累积沉降逐渐变大，25 Hz时累积沉降出现极大值，有“类共振”现象发生。实际工程中，可通过增大路堤刚度，避免这类情况发生。随着加载幅值的增大，累积沉降线性单调增长；加载幅值每增加1 kN，轨道板上累积沉降平均增长1.27倍。最后通过分析对比提出了考虑列车速度、列车轴重等因素的累积沉降预测公式。

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	牛婷婷1
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	吴富敏1
	张智超4
	陈志雄2
	丁选明2

关键词 ：基础工程, 累积沉降, 桩网复合地基, 高速列车荷载, 沉降预测

Abstract：To explore the accumulated settlement of piled embankments under high-speed train loads，a large-scale X-shaped piled embankment model was established. A series of model tests were conducted，and the evolution of the cumulative settlement of X-shaped piled embankments was investigated. The results show that after 20 000 cycles of vibration，the accumulated settlement at the center of the adjacent four piles is the largest，followed by the track slab and then the pile top. Moreover，the “hang-up” effect in the square grid is significant. As the number of cyclic loading increases，the accumulated settlement at each measuring point continues to increase. When the loading frequency is ≤15 Hz，after 10 000 cycles of vibration，the accumulated settlement curves at each measuring point gradually become gentle，and the rate of settlement gradually decreases. Furthermore，when the loading frequency is ≥25 Hz，the accumulated settlement curves on the track slab show little tendency to slow down with increasing cyclic loading times，and the rate of accumulated settlement growth is relatively fast. With an increasing loading frequency，the accumulated settlement at each measuring point gradually increases. The accumulated settlement reaches a maximum value at 25 Hz，and a “quasi-resonance” phenomenon occurs. In practical engineering，such situations can be avoided by increasing the stiffness of the embankment. As the loading amplitude increases，the accumulated settlement linearly monotonically increases. When the loading amplitude increases by 1 kN，the accumulated settlement on the track slab increases by an average 1.27 times. Finally，a prediction formula for accumulated settlement evolution considering factors such as the train speed and axle load was proposed through analysis and comparison.

Key words： pile foundations accumulated settlement piled embankment high-speed train load settlement prediction

引用本文:

牛婷婷1，2，3，吴富敏1，张智超4，陈志雄2，丁选明2. 高速列车荷载作用下X形桩桩网复合地基累积沉降研究[J]. 岩石力学与工程学报, 2024, 43(1): 236-247.
NIU Tingting1，2，3，WU Fumin1，ZHANG Zhichao4，CHEN Zhixiong2，DING Xuanming2. Accumulated settlement of X-shaped piled embankments under high-speed train loads. , 2024, 43(1): 236-247.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2023.0372 或 http://rockmech.whrsm.ac.cn/CN/Y2024/V43/I1/236

[14]	British Standards Institution. BS8006—1：2010 Code of practice for strengthened/reinforced soils and other fills[S]. London：BSI Group Headquarers，2010.
[30]	KRYLOV V V. Generation of ground vibrations by superfast trains[J]. Applied Acoustics，1995，44(2)：149-164.
[28]	GARTUNG E. Messberichte zum streckenabschnitt werder-brandenburg der ABS Magdeburg-Berlin[R]. [S. l.]：[s.n.]，1999.
[2]	张良，罗强，陈亚美，等. 桩网结构路基承载特性的现场试验研究[J]. 岩土力学，2010，31(12)：3 793-3 800.(ZHANG Liang，LUO Qiang，CHEN Yamei，et al. Research on bearing behavior of pile-net structure subgrade based on field test[J]. Rock and Soil Mechanics，2010，31(12)：3 793-3 800.(in Chinese))
[3]	于进江，程谦恭，李成辉，等. 超大面积深厚软土桩-网复合地基现场试验研究[J]. 岩土力学，2012，33(10)：2 881-2 889.(YU Jinjiang，CHENG Qiangong，LI Chenghui，et al. Field test study of pile-net composite foundation on oversized deep soft soil[J]. Rock and Soil Mechanics，2012，33(10)：2 881-2 889.(in Chinese))
[6]	王敏，徐林荣. 中等压缩性土短桩网复合地基变形现场测试特性[J]. 土木建筑与环境工程，2017，39(5)：63-70.(WANG Min，XU Linrong. Deformation characteristics of short pile-net composite foundation with medium compression soil by field test[J]. Journal of Civil and Environmental Engineering，2017，39(5)：63-70.(in Chinese))
[8]	饶为国，江辉煌，侯庆华. 桩-网复合地基工后沉降的薄板理论解[J]. 水利学报，2002，4(4)：23-27.(RAO Weiguo，JIANG Huihuang，HOU Qinghua. Deformation of sheet plate due to residual settlement of pile-net composite foundation[J]. Journal of Hydraulic Engineering，2002，4(4)：23-27.(in Chinese))
[10]	王长丹，王炳龙，周顺华，等. 高速铁路刚性桩网复合地基沉降计算方法与实测数据对比分析[J]. 铁道学报，2013，35(8)：80-87.(WANG Changdan，WANG Binglong，ZHOU Shunhua，et al. Calculation method of settlement of rigid pile-geogrid composite foundation of high-speed railways and comparison with measured data[J]. Journal of the China Railway Society，2013，35(8)：80-87.(in Chinese))
[12]	ZHANG L，ZHAO M H，HU Y X，et al. Semi-analytical solutions for geosynthetic-reinforced and pile-supported embankment[J]. Computers and Geotechnics，2012，44：167-175.
[13]	张树明，蒋关鲁，廖祎来，等. 加固范围及边坡坡率对CFG桩-网复合地基受力变形特性影响分析[J]. 岩石力学与工程学报，2019，38(1)：191-201.(ZHANG Shuming，JIANG Guanlu，LIAO Yilai，et al. Effect of the strengthening area and the slope rate on bearing and deforming behaviors of CFG pile-geogrid composite foundations[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(1)：191-201.(in Chinese))
[16]	Nordic Geosynthetic Group. Nordic handbook-Reinforced soils and fills[S]. Stockholm：Geotechnical Societies in the Nordic Countries and Nordic Industrial Fund，2002.
[36]	谢定义. 土动力学[M]. 北京：高等教育出版社，2011：40-43.(XIE Dingyi. Soil dynamics[M]. Beijing：Higher Education Press，2011：40-43.(in Chinese))
[18]	中华人民共和国行业标准编写组. JGJ 79—2012 建筑地基处理技术规范[S]. 北京：中国建筑工业出版社，2002.(The Professional Standard Compilation Groups of the People's Republic of China. JGJ 79—2012 Technical code for ground treatment of buildings[S]. Beijing：China Architecture and Building Press，2022.(in Chinese))
[20]	杨以国，刘开富，谢新宇. 循环荷载下长短桩桩网复合地基变形试验研究[J]. 浙江大学学报：工学版，2021，55(6)：1 027-1 035. (YANG Yiguo，LIU Kaifu，XIE Xinyu. Experimental research on deformation of pile-net compositefoundation with long-short piles under cyclic load[J]. Journal of Zhejiang University：Engineering Science，2021，55(6)：1 027-1 035.(in Chinese))
[22]	边学成，蒋红光，申文明，等. 基于模型试验的高铁路基动力累积变形研究[J]. 土木工程学报，2011，44(6)：112-119.(BIAN Xuecheng，JIANG Hongguang，SHEN Wenming，et al. Study of accumulative deformation of high-speed railways based on physical model testing[J]. China Civil Engineering Journal，2011，44(6)：112-119.(in Chinese))
[23]	牛婷婷，孙广超. 高速铁路X形桩桩网复合地基动态响应分析[J]. 岩土力学，2021，45(5)：1 266-1 280.(NIU Tingting，SUN Guangchao. Dynamic response analysis of X-pile-net composite embankment in high-speed railway[J]. Rock and Soil Mechanics，2021，45(5)：1 266-1 280.(in Chinese))
[26]	CHEN R P，XU Z Z，CHEN Y M，et al. Field tests on pile-supported embankments over soft ground[J]. Journal of Geotechnical and Geoenvironmental Engineering，2010，136(6)：777-785.
[32]	MADSHUS C，KAYNIA A M. High-speed railway lines on soft ground：dynamic behaviour at critical train speed[J]. Journal of Sound and Vibration，2000，231(3)：689-701.
[33]	MADSHUS C. Modelling，monitoring and controlling the behaviour of embankments under high speed train loads[C]// Geotechnics for Roads，Rail Tracks and Earth Structures. CORREIA A G，BRANDL H，ed. Istanbul：[s. n.]，2001：225-238
[38]	佐藤吉彦. 新轨道动力学[M]. 徐涌，译. 北京：中国铁道出版社，2001：121.(SATO Yoshihiko. New orbit dynamics[M]. Translated by XU Yong. Beijing：China Railway Publishing House，2001：121.(in Chinese))
[40]	RÜCKER W，RICHTER T. Setzung aus zyklischer Belastung，statusbericht zum vorhaben “weiteren-twicklung von schotterlosen fahrbahnen auf erd-und kunstbauwerken”[R]. Berlin：[s. n.]，1990
[9]	杨龙才，王炳龙，赵国堂，等. CFG桩网复合地基沉降计算方法研究[J]. 铁道建筑，2009，(7)：19-23.(YANG Longcai，WANG Binglong，ZHAO Guotang，et al. Research on settlement calculation method of CFG pile net composite foundation[J]. Railway Engineering，2009，(7)：19-23.(in Chinese))
[19]	高昂，张孟喜，刘芳，等. 分级循环荷载下土工格室加筋路堤模型试验研究[J]. 岩土力学，2016，37(8)：2 213-2 221.(GAO Ang，ZHANG Mengxi，LIU Fang，et al. Model experimental study of embankment reinforced with geocells under stepped cyclic loading[J]. Rock and Soil Mechanics，2016，37(8)：2 213-2 221.(in Chinese))
[29]	牛婷婷，刘汉龙，丁选明，等. 高铁列车荷载作用下桩网复合地基振动特性模型试验[J]. 岩土力学，2018，39(3)：872-880.(NIU Tingting，LIU Hanlong，DING Xuanming，et al. Piled embankment model test on vibration characteristics under high-speed train loads[J]. Rock and Soil Mechanics，2018，39(3)：872-880.(in Chinese))
[1]	中华人民共和国行业标准编写组. TB 10621—2014 高速铁路设计规范[S]. 北京：中国铁道出版社，2014.(The Professional Standards Compilation Group of the People?s Republic of China. TB 10621—2014 Code for design of high-speed railway[S]. Beijing：China Railway Publishing House，2014.(in Chinese))
[4]	杨果林，黄向京，赵伟. 红黏土桩-网复合地基现场试验研究[J]. 水文地质工程地质，2010，37(1)：85-89.(YANG Guolin，HUANG Xiangjing，ZHAO Wei. Experimental study on pile-net composite foundation of red clay[J]. Hydrogeology and Engineerin Ggeology，2010，37(1)：85-89.(in Chinese))
[11]	CHEN R P，CHEN Y M，HAN J，et al. A theoretical solution for pile-supported embankments on soft soils under one-dimensional compression[J]. Canadian Geotechnical Journal，2008，45(5)：611-623.
[21]	CHEN Y M，MA S N，REN Y，et al. Experimental study on cyclic settlement of piles in silt soil and its application in high-speed railway design[J]. Transportation Geotechnics，2021，27：100496.
[24]	NIU T，LIU H，DING X，et al. Model tests on XCC-piled embankment under dynamic train load of high-speed railways[J]. Earthquake Engineering and Engineering Vibration，2018，17(3)：581-594.
[31]	KRYLOV V. V. Effects of the embankment topography and track curvature on ground vibration boom from high-speed trains[C]// Proceedings of the Symposium EURODYN2002. Munich，Germany：A.A. Balkema Publishers，2002：473-478.
[34]	KAYNIA A. M，MADSHUS C，ZACKRISSON P. Ground vibration from high-speed trains：Prediction and countermeasure[J]. Journal of Geotechnical and Geoenvironmental Engineering，2000，126(6)：531-537.
[5]	赵国堂，马建林，彭声应，等. 高速铁路 CFG 桩不同结构形式下地基沉降-时间发展规律的试验研究与预测[J]. 铁道建筑，2009，(7)：62-65.(ZHAO Guotang，MA Jianlin，PENG Yingsheng，et al. Experimental research and prediction of foundation Settlement-time development rule under different structural forms of CFG pile in high-speed railway[J]. Railway Engineering，2009，(7)：62-65.(in Chinese))
[7]	王亚飞. 合福高速铁路更新统黏性土地基沉降测试与分析[J]. 铁道建筑，2018，58(5)：102-105.(WANG Yafei. Measurement and analysis of pleistocene clay foundation settlement of Hefei－Fuzhou high speed railway[J]. Ｒailway Engineering，2018，58(5)：102-105.(in Chinese))
[15]	The German Geotechnical Society. EBGEO—2010 Recommendations for design and analysis of earth structures using geosynthetic reinforcements(EBGEO)[S]. Berlin Germany：Ernst and Sohn GmbH and Co. KG，2010.
[17]	Railway Institute of General Technology. The design and construction handbook of mixing piled foundation(machine mixing)[M]. Tokyo：Railway Technology Research Institute，2001.
[25]	LIU H L，NG C W W，FEI K. Performance of a geogrid-reinforced and pile-supported highway embankment over soft clay：case study[J]. Journal of Geotechnical and Geoenvironmental Engineering，2007，133(12)：1 483-1 493.
[27]	BRIANÇON L，SIMON B. Performance of pile-supported embankment over soft soil：full-scale experiment[J]. Journal of Geotechnical and Geoenvironmental Engineering，2012，138(4)：551-561.
[35]	NSABIMANA E，JUNG Y H. Dynamic subsoil responses of a stiff concrete slab track subjected to various train speeds：A critical velocity perspective[J]. Computers and Geotechnics，2015，69：7-21.
[37]	胡一峰，李怒放. 高速铁路无砟轨道路基设计原理[M]. 北京：中国铁道出版社，2010：102.(HU Yifeng，LI Nufang. Theory of ballastless track-subgrade for high speed railway[M]. Beijing：China Railway Publishing House，2010：102.(in Chinese))
[39]	宋欢平，边学成，蒋建群，等. 高速铁路路基沉降与列车运行速度关联性的研究[J]. 振动与冲击，2012，31(10)：134-140.(SONG Huanping，BIAN Xuecheng，JIANG Jianqun，et al. Correlation between subgrade settlement of high-speed railroad and train operation speed[J]. Journal of Vibration and Shock，2012，31(10)：134-140.(in Chinese))