列车荷载下桩-土复合地基动力响应研究进展

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摘要 研究目的: 桩-土复合地基在列车荷载下会产生动力作用,甚至造成强度失效或整体变形破坏,严重威胁列车运行安全。因此,亟需开展列车荷载下桩-土复合地基动力特性的研究,对有效提高铁路路基的稳定性、保证高速列车的行驶安全具有重要意义。本文通过分析桩-土复合地基的加固机理及破坏模式,总结国内外关于桩-土复合地基在不同动荷载下的动力响应研究现状以及几种常用的不同桩型复合地基在列车荷载下的动力响应规律,并在此基础上指出目前的研究不足和提出未来需要重点关注的研究问题。
研究结论: (1)尽管不同动荷载作用下桩-土复合地基的动力响应呈现了不同的特征,但在动荷载下桩体响应都大于土体响应,这与桩-土复合地基的作用机理吻合,不管在静载或动载下桩体承担了大部分荷载,因此对桩-土复合地基动力响应的研究应重点分析桩体的响应,但同时也不能忽略桩间土的影响;(2)桩体材料、桩体形状、桩帽、褥垫层厚度、复合土体模量等因素都会影响复合地基的动力特性,列车荷载下桩-土复合地基的动力响应特性还与列车的车速、列车载重、循环次数等有关,且普遍认为刚性桩复合地基具有良好的抗震性能,碎石或砂砾垫层表现出良好的隔震作用;(3)列车荷载下不同桩型构成的桩-土复合地基其桩间土体振动响应沿深度方向存在衰减特性,但桩体则存在某个部位的放大现象,在设计不同桩型复合地基时应注意考虑桩体动力特性的研究;(4)本研究结论可为设计单位进行铁路桩-土复合地基的优化设计提供理论依据。

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	吴红刚
	关伟

关键词 ：桩-土复合地基, 加固机理, 动荷载, 动力响应

Abstract：Research purposes: Under the train load, pile-soil composite foundation will produce dynamic action, and even cause strength failure or overall deformation and destruction, which seriously threaten the safety of train operation. Therefore, it is urgent to study the dynamic characteristics of pile-soil composite foundation under train load, which is of great significance to effectively improve the stability of railway subgrade and ensure the safety of high-speed train. This paper analyzes the reinforcement mechanism and failure mode of pile-soil composite foundation, summarizes the research status of domestic and foreign scholars on the dynamic response of pile-soil composite foundation under different dynamic loads and the dynamic response law of several commonly used different pile type composite foundation under train loads. On this basis, it points out the shortcomings of current research and puts forward the research problems that need to be paid more attention in the future.
Research conclusions: (1) Although the dynamic response of pile-soil composite foundation under different dynamic loads presents different characteristics, the response of pile body is greater than that of soil body under dynamic loads, which is consistent with the action mechanism of pile-soil composite foundation, whether under static or dynamic loads, piles bear most of the load. Therefore, the research on the dynamic response of pile-soil composite foundation should focus on the response of piles, but the influence of soil between piles should not be ignored. (2) Pile materials, shape of pile, pile cap, thickness of mattress layer, modulus of composite soil and other factors will influence the dynamic characteristics of pile-soil composite foundation, and the dynamic response characteristics of pile-soil composite foundation under train load are also related to the speed of the train, train load, cycle times and so on. It is generally believed that the rigid pile composite foundation has good seismic performance, and gravel or gravel mats exhibit good isolation. (3) The soil vibration response of pile-soil composite foundation composed of different pile types under train loads attenuates along the depth direction, but the pile body amplifies in a certain part. Therefore, the dynamic characteristics of pile should be considered when designing composite foundation of different pile types. (4) The research conclusion can provide a theoretical basis for the optimal design of railway pile-soil composite foundation.

Key words： pile-soil composite foundation reinforcement mechanism dynamic loads dynamic response

收稿日期: 2021-05-31

PACS:

TU443

基金资助:国家重点研发计划资助(2018YFC1504901);甘肃省自然科学基金项目(145RJZA068)

作者简介: ^**吴红刚,1983年出生,男,正高级工程师,硕士生导师;关伟,1997年出生,男。

引用本文:

吴红刚, 关伟. 列车荷载下桩-土复合地基动力响应研究进展[J]. 铁道工程学报, 2022, 39(7): 1-11.
WU Honggang, GUAN Wei. Research on the Progress of Dynamic Response of Pile-soil Composite Foundation under Train Load. Journal of Railway Engineering Society, 2022, 39(7): 1-11.

链接本文:

https://tdgcxb.crec.cn/CN/ 或 https://tdgcxb.crec.cn/CN/Y2022/V39/I7/1

[1]	谭坚. CFG桩复合地基加固机理及工程实例分析[J]. 建筑工程技术与设计, 2020(14):4297-4298.Tan Jian. CFG Pile Composite Foundation Reinforcement Mechanism and Engineering Example Analysis [J].Architectural Engineering Technology and Design, 2020(14):4297-4298.
[2]	郭春亮. 地基处理与复合地基技术的应用[J]. 科学与财富, 2020(7):29.Guo Chunliang. Application of Foundation Treatment and Composite Foundation Technology[J]. Sciences and Wealth, 2020(7):29.
[3]	周文辉. CFG桩复合地基的作用机理及应用[J]. 城市建设理论研究,2011(36):1-6.Zhou Wenhui. Action Mechanism and Application of CFG Pile Composite Foundation[J]. Theoretical Research in Urban Construction,2011(36):1-6.
[4]	郭兵. 柔性基础下刚性桩复合地基承载力的试验研究[D]. 郑州:郑州大学,2006.Guo Bing. Experimental Study on Bearing Capacity of Rigid Pile Composite Foundation under Flexible Foundation[D]. Zhengzhou: Zhengzhou University,2006.
[5]	白杰亮. 素混凝土桩复合地基竖向承载力研究及其工程应用[D]. 成都:西华大学,2009.Bai Jieliang. Research on Vertical Bearing Capacity of Plain Concrete Pile Composite Foundation and Its Engineering Application [D].Chengdu: Xihua University,2009.
[6]	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, 2007.Gong Xiaonan. Composite Foundation Theory and Engineering Application[M]. Beijing:China Architecture and Building Press, 2007.
[7]	钟伟兵.高速公路软基处理中的复合地基施工技术[J]. 工程建设与设计, 2019(21):235-237.Zhong Weibing. Construction Technology of Composite Foundation in Soft Foundation Treatment of Expressway [J]. Construction & Design for Project, 2019(21):235-237.
[8]	Kaynia A M,Kausel E. Dynamic Stiffness and Seismic Response of Pile Groups[R].Research Report R82-03,Cambridge: Masschusetts Institute of Technology,1982.
[9]	Nogami T,Jones H W,Mosher R L. Seismic Response Analysis of Pile-supported Structure:Assessment of Commonly Used Approximations[C]//Proceedings of 2nd International Conference:Recent Advancements of Geotechnical Earthquake Engineering and Soil Dynamics.Saint Louis,1991:931-940.
[10]	Nicos Makris,George Gazetas.Dynamic Pile-soil-pile Interaction.Part II:Lateral and Seismic Response[J].Earthquake Engineering and Structure Dynamics,1992,21:145-162.
[11]	熊辉,谷亚东. 基于高速列车振动荷载的桩-土-结构相互作用分析[J]. 铁道科学与工程学报,2019(2):302-309.Xiong Hui, Gu Yadong. Pile-soil-structure Interaction Analysis Based on High-speed Train Vibration Load[J].Journal of Railway Science and Engineering,2019(2):302-309.
[12]	陈士海,戚桂峰,毕卫国.铁路交通引起的地面振动荷载确定[J].岩土力学,2012(S2):311-313.Chen Shihai, Qi Guifeng, Bi Weiguo. Determination of Ground Vibration Load Caused by Railway Transport[J]. Rock and Soil Mechanics,2012(S2):311-313.
[13]	武思宇, 宋二祥, 刘华北, 等. 刚性桩复合地基的振动台试验研究[J]. 岩土工程学报, 2005(11):1334-1337.Wu Siyu, Song Erxiang, Liu Huabei, etc.Shaking Table Test of Composite Foundation with Rigid Pile [J]. Chinese Journal of Geotechnical Engineering, 2005(11):1334-1337.
[14]	盛桂琳, 鲍鹏, 苏彩丽, 等. 刚性桩复合地基桩体抗震性能分析[J]. 岩土力学, 2013(5):1274-1278.Sheng Guilin, Bao Peng, Su Caili, etc. Seismic Behavior Analysis of Rigid Pile Composite Foundation[J]. Rock and Soil Mechanics, 2013(5):1274-1278.
[15]	欧阳芳, 张建经, 韩建伟, 等. 包裹碎石桩和碎石桩复合地基抗震性能对比试验研究[J]. 岩土力学, 2016(4):998-1004.Ouyang Fang, Zhang Jianjing, Han Jianwei, etc. Comparison of Aseismic Behavior between Geo-encased Stone Columns Composite Foundation and Stone Columns Composite Foundation[J].Rock and Soil Mechanics, 2016(4):998-1004.
[16]	顾红伟, 孔纲强, 刘汉龙, 等. 不同振动波形对单桩桩-筏复合地基动力响应特性研究[J]. 岩土力学, 2015(S2):303-309.Gu Hongwei, Kong Gangqiang, Liu Hanlong, etc. Dynamic Response of Single Pile-raft Composite Foundation Influenced by Different Waveforms[J]. Rock and Soil Mechanics, 2015(S2):303-309.
[17]	Liu Kaifu, Yang Yiguo, Wang Lei, etc. Experimental Investigation of Geosynthetic-Reinforced Pile-Supported Composite Foundations under Cyclic Loading[J]. Advances in Civil Engineering, 2020(5):1-11.
[18]	张玲, 徐泽宇, 赵明华. 循环荷载作用下筋箍碎石桩复合地基工作性状试验研究[J]. 岩土工程学报, 2020(12):2198-2205.Zhang Ling, Xu Zeyu, Zhao Minghua.Experimental Research on Behaviors of Geogrid-encased Stone Column-improved Composite Foundation under Cyclic Loads[J]. Chinese Journal of Geotechnical Engineering, 2020(12):2198-2205.
[19]	王维玉, 赵拓, 丁继辉. 夯实水泥土桩复合地基动力特性和时程响应影响因素分析[J]. 工程力学, 2011(S2):187-191.Wang Weiyu, Zhao Tuo, Ding Jihui. Effects on Dynamic Characteristics and Response of Rammed Soil-cement Pile Composite Foundation[J].Engineering Mechanics, 2011(S2):187-191.
[20]	Ding Jihui,Quan Xiaojuan,Du Erxia,etc. Dynamic Characteristics on Composite Foundation with CFG Pile[J]. Journal of Civil Engineering and Architecture Research, 2014(2).
[21]	张攀星, 裴颖颖. 水泥土桩和CFG桩组合桩复合地基动力试验[J]. 城市建设理论研究,2013(11):21-24.Zhang Panxing, Pei Yingying.Dynamic Test of Cement Soil Pile and CFG Pile Composite Pile Composite Foundation [J]. Theoretical Research in Urban Construction,2013(11):21-24.
[22]	陈功奇. 基于现场测试的列车引起地基振动分析[J]. 岩石力学与工程学报,2015(3):601-611.Chen Gongqi. Ground Vibration Analysis Induced by High-speed Train Based on In-situ Data[J]. Chinese Journal of Rock Mechanics and Engineering,2015(3):601-611.
[23]	杨志华, 杨庆, 孔纲强, 等. 水泥土搅拌桩复合地基震动性能时程分析[J]. 岩土力学, 2008(3):805-810.Yang Zhihua, Yang Qing, Kong Gangqiang, etc. Seismic Response of Cement-soil Mixing Pile Composite Foundation with Time-history Analysis[J].Rock and Soil Mechanics, 2008(3):805-810.
[24]	Cui Honghuan, Zhang Liqun, Wang Hailong.Analysis for Seismic Response of Compacted Soil-Cement Pile Composite Foundations[J]. Advanced Materials Research, 2011(368-373):456-460.
[25]	何强,汪滇菊, 梁文文, 等. 桩-网复合地基的动力稳定性分析[J]. 地下空间与工程学报, 2012(4):761-766.He Qiang, Wang Dianju, Liang Wenwen, etc.Dynamic Stability Analysis of Pile-net Composite Foundation [J]. Chinese Journal of Underground Space and Engineering, 2012(4):761-766.
[26]	Sheng Guilin, Su Caili, Liu Dehui. Analysis of Dynamic Performance of Rigid Pile Composite Foundation[J]. Applied Mechanics and Materials, 2012(256-259):648-651.
[27]	邓宇洁, 梁发云, 贾亚杰. 刚性桩复合地基地震响应的拟静力简化计算方法[J]. 防灾减灾工程学报, 2019(2):236-243.Deng Yujie, Liang Fayun, Jia Yajie. Pseudo-static Simplification Analysis of Rigid Pile Composite Foundation under Earthquake Action[J].Journal of Disaster Prevention and Mitigation Engineering, 2019(2):236-243.
[28]	路言杰, 闫孔明, 吴金标, 等. 高速列车运行对软土区桩-网复合地基的动力影响范围[J]. 铁道建筑, 2015(11):61-64.Lu Yanjie, Yan Kongming, Wu Jinbiao, etc.Dynamic Influence Range of High-speed Train Operation on Pile-net Composite Foundation in Soft Soil Area [J]. Railway Engineering, 2015(11):61-64.
[29]	Xiang G, Wang C, Xu Z, etc. Study on Settlement Regularity of CFG Pile Composite Foundation Under Train Load[J].New Technologies of Railway Engineering, 2012:480-485.
[30]	王苗苗, 丰成君, 戚帮申, 等. 考虑断层效应的高铁列车动荷载对地面沉降影响机理研究—以京张高铁怀来段为例[J]. 地质力学学报, 2018(3):407-415.Wang Miaomiao, Feng Chengjun, Qi Bangshen, etc. Study on the Influence Mechanism of High-speed Train Dynamic Load on Land Subsidence Subjected to Fault Effect—A Case Study of Huailai Section of Beijing-Zhangjiakou High-speed Railway[J].Journal of Geomechanics, 2018(3):407-415.
[31]	Cheng Xuansheng, Liu Gongning, Gong Lijun, etc. Mechanical Characteristics + Differential Settlement of CFG Pile and Cement-soil Compacted Pile about Composite Foundation under Train Load[J]. Geomechanics and Engineering, 2020,20(2):155.
[32]	匡月青. 地铁列车荷载作用下地铁车辆段桩承式复合地基动力响应数值分析[J]. 城市道桥与防洪, 2020(10):177-180.Kuang Yueqing. Numerical Analysis on Dynamic Response of Pile Supported Composite Foundation in Metro Train Depot under Metro Train Load Effect[J].Urban Roads, Bridges and Flood Control, 2020(10):177-180.
[33]	Wang Ziyu,Tian Lihui. Research on the Influence of Train Formation on the Vibration Stress of Railway Subgrade in Seasonally Frozen Region[C]//IOP Conference Series Earth and Environmental Science,2019,242(3):032064.
[34]	Reda Mezeh, Hussein Mroueh,Mohsen Hosseingholian,etc. New Approach for the Assessment of Train/Track/Foundation Dynamics Using in-situ Measurements of High-speed Train Induced Vibrations[J].Soil Dynamics and Earthquake Engineering,2019(116):50-59.
[35]	梁波,罗红,孙常新. 高速铁路振动荷载的模拟研究[J]. 铁道学报,2006(4):89-94.Liang Bo, Luo Hong, Sun Changxin.Simulated Study on Vibration Load of High Speed Railway[J]. Journal of the China Railway Society,2006(4):89-94.
[36]	付强, 宋金良, 丁选明, 等. 高铁荷载下桩-土复合地基振动响应特性研究[J]. 铁道科学与工程学报, 2017(10):2050-2058.Fu Qiang, Song Jinliang, Ding Xuanming, etc.Vibration Response of Pile-soil Composite Foundation under High-speed Railway Load[J]. Journal of Railway Science and Engineering, 2017(10):2050-2058.
[37]	陈金光, 孟德芹, 李建博. 高铁预应力管桩桩—网复合地基动力响应研究[J]. 地下空间与工程学报, 2020(S2):679-686.Chen Jinguang, Meng Deqin, Li Jianbo. Research on the Dynamic Response of Prestressed Pipe Pile Supported and Geogrid Reinforced Subgrade[J].Journal of Underground Space and Engineering, 2020(S2):679-686.
[38]	刘汉龙, 孙广超, 孔纲强, 等. 无砟轨道X形桩-筏复合地基动土压力分布规律试验研究[J]. 岩土工程学报, 2016(11):1933-1940.Liu Hanlong, Sun Guangchao, Kong Gangqiang, etc.Experimental Study on Dynamic Earth Pressure Distribution of X-shaped Pile-raft Composite FoundAtion for Ballastless Track [J]. Chinese Journal of Geotechnical Engineering, 2016(11):1933-1940.
[39]	Xue Shanshan, Chen Yumin, Liu Hanlong,etc. Model Test Study on the Influence of Train Speed on the Dynamic Response of an X-Section Pile-Net Composite Foundation[J]. Shock and Vibration, 2019(6):1-13.
[40]	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(3):872-880.Niu Tingting, Liu Hanlong, Ding Xuanming, etc. Piled Embankment Model Test on Vibration Characteristics under High-speed Train Loads[J]. Rock and Soil Mechanics, 2018(3):872-880.
[41]	孙广超, 孔纲强, 刘汉龙, 等. 荷载振幅对X形桩-筏复合地基动力响应特性影响的试验研究[J]. 中南大学学报:自然科学版, 2020(2):499-506.Sun Guangchao, Kong Gangqiang, Liu Hanlong, etc.Experimental Study on the Influence of Load Amplitude on Dynamic Response Characteristics of X-shaped Pile-raft Composite Foundation [J].Journal of Central South University:Science and Technology, 2020(2):499-506.
[42]	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, 2010(6):17-22.Wang Yang, Zhou Meng, Gong Quanmei, etc.An Analysis on Design Parameters of CFG Pile-net Composite Structure of High-speed Railway[J]. Journal of East China Jiaotong University, 2010(6):17-22.
[43]	Yang Chengzhong,Ni Kai,Wang Shufang. Analysis of The Stress Characteristics of CFG Pile Composite Foundation Under Irregularity Condition[J]. Civil Engineering Journal, 2017(2):154-166.
[44]	孙沙沙, 薛祯祯, 王天奇, 等. 高铁CFG桩桩-网复合地基动力响应研究[J]. 建材与装饰, 2020(23):251-252.Sun Shasha, Xue Zhenzhen, Wang Tianqi, etc.Research on Dynamic Response of CFG Pile and Net Composite Foundation for High-speed Railway [J]. Construction Materials and Decoration, 2020(23):251-252.