[1]邓友生,王一雄,苏家琳,等.桩网结构动力响应研究新进展[J].西安科技大学学报,2020,(03):377-383.[doi:10.13800/j.cnki.xakjdxxb.2020.0301]
 DENG You-sheng,WANG Yi-xiong,SU Jia-lin,et al.New research progress in dynamic response of pile net structure[J].Journal of Xi'an University of Science and Technology,2020,(03):377-383.[doi:10.13800/j.cnki.xakjdxxb.2020.0301]
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桩网结构动力响应研究新进展(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2020年03期
页码:
377-383
栏目:
出版日期:
2020-05-15

文章信息/Info

Title:
New research progress in dynamic response of pile net structure
文章编号:
1672-9315(2020)03-0377-07
作者:
邓友生王一雄苏家琳孙雅妮蔡梦真
(西安科技大学 建筑与土木工程学院,陕西 西安 710054)
Author(s):
DENG You-shengWANG Yi-xiongSU Jia-linSUN Ya-niCAI Meng-zhen
(College of Civil and Architectural Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)
关键词:
桩网结构 沉降变形 土拱效应 动力响应
Keywords:
pile net structure settlement deformation soil arching effect dynamic response
分类号:
TU 473
DOI:
10.13800/j.cnki.xakjdxxb.2020.0301
文献标志码:
A
摘要:
桩网结构是近些年来出现加固软弱地基加固的路基,利用桩、路基、填土和土工材料之间相互协同作用,共同承担路基的上部荷载,提高结构承载力,具有土体侧向位移小、工后沉降易控制、地基处理厚度深、相邻建筑影响小等优点,故研究桩承结构路基在列车动荷载作用下的沉降变形特性和动力响应是十分必要的,桩承结构路基动力学已成为铁道工程、结构力学等众多领域的共同研究热点。首先简述了桩承结构的加固路基的机理; 其次,分别从湿陷性黄土路基桩承结构的沉降计算、土拱效应和动力响应特性等方面进行理论研究与试验分析; 并列举了采取桩承结构处理路基的工程实例,证明了其应用的可行性; 最后指出其有待深入研究的问题,并展望高速铁路桩承结构发展的前景。
Abstract:
Pile net structure is a new type of weak foundation reinforcement technology that has emerged in recent years.It uses the synergy between piles,foundations,roadbed fills and geotechnical materials to share the upper load of the bearing subgrade and improve the structural bearing capacity.It has the advantages of small displacement,easy control after settlement,deep depth of foundation treatment,and small influence of adjacent buildings.Therefore,it is necessary to study the settlement deformation characteristics and dynamic response of the pile-supported subgrade under the dynamic load of the train.The subgrade dynamics of the pile-supported structure has become a hot topic of research in many fields such as railway engineering and structural mechanics.Firstly,the mechanism of the reinforced roadbed of the pile-supporting structure is briefly described.Secondly,theoretical research and experimental analysis are carried out on the settlement calculation,soil arching effect and dynamic response characteristics of the pile-stayed structure of the collapsible loess roadbed.The engineering example of the structure to deal with the subgrade proves the feasibility of its application.Finally,problems that need to be studied in depth have been pointed out,and proposes the prospect of the development of the high-speed railway pile-support structure has been proposed.

参考文献/References:

[1] 杜小素,霍少磊,胡洪军.钢筋混凝土桩网结构在客运新线中的应用[J].铁道建筑,2010(9):84-85. DU Xiao-su,HUO Shao-lei,HU Hong-jun.Application of reinforced concrete pile net structure in passenger transportation new line[J].Railway Engineering,2010(9):84-85. [2]邹永木.客运专线无砟轨道桩网结构路基初探[J].成都科技,2008(4):27-29. ZOU Yong-mu.Preliminary study on the subgrade of pile-free net structure of ballastless track in passenger dedicated line[J].Chengdu Technology,2008(4):27-29. [3]Habibagahi G,Mokjberi M.A hyperbolic model for volume change behavior of collapsible soils[J].Can Geotech J,1998,35(2):264-272. [4]王长丹,王炳龙,王 旭,等.湿陷性黄土桩网复合地基沉降控制离心模型试验[J].铁道学报,2011,33(4):84-92. WANG Chang-dan,WANG Bing-long,WANG Xu,et al.Analysis onsettlement controlling effect of pile-net composite foundation on collapsible loess by centrifugal model tests[J].Journal of the China Railway Society,2011,33(4):84-92. [5]李 洋,雷胜友,李梦莎,等.高铁路基下长短桩处理的湿陷性黄土地基沉降分析[J].中国科技论文,2015,10(7):794-797. LI Yang,LEI Sheng-you,LI Meng-sha,et al.Settlement analysis for long-short-pile composite foundation in collapsible loess area under high-spspeed railway subgrade[J].China Sciencepaper,2015,10(7):794-797. [6]叶万军,刘 宽,董西好,等.干湿循环下重塑黄土水分迁移试验[J].西安科技大学学报,2018,38(7):937-944. YE Wan-jun,LIU Kuan,DONG Xi-hao,et al.Moisturetransfer test of remolded loess under drying-wetting cycles[J].Journal of Xi'an University of Science and Technology,2018,38(7):937-944. [7]中华人民共和国铁道部.客运专线无砟轨道铁路设计指南[M].北京:中国铁道出版社,2005. [8]Terzaghi K.Theoretical Soil Mechanics[M].New York:John Wiley and Sons,1943. [9]刘新军.考虑地面动荷载的地铁运行隧道结构安全分析[J].西安科技大学学报,2017,37(2):171-177. LIU Xin-jun.Safety analysis of the tunnel structure during metro operation with ground dynamic load taken into account[J].Journal of Xi'an University of Science and Technology,2017,37(2):171-177. [10]薛振年,陈国龙,孔维康,等.旋喷桩加固黄土隧道基底及仰拱数值模拟[J].西安科技大学学报,2018,38(4):577-584. XUE Zhen-nian,CHEN Guo-long,KONG Wei-kang,et al.Numerical simulation of jet grouting piles reinforcement in loess tunnel basement and inverted arch[J].Journal of Xi'an University of Science and Technology,2018,38(4):577-584. [11]魏 平,魏 静,杨松林,等.静动荷载下桩网结构路基土拱效应细观分析[J].铁道工程学报,2017(5):1-6. WEI Ping,WEI Jing,YANG Song-lin,et al.Research on the soil arching effect in pile net structure of embankment under static load and dynamic load[J].Journal of Railway Engineering Society,2017(5):1-6. [12]韩高孝,宫全美,周顺华.列车动荷载下桩网结构路基土拱效应试验研究[J].岩土力学,2014,35(6):1600-1606. HAN Gao-xiao,GONG Quan-mei,ZHOU Shun-hua.Experimental study of soil arching effect in geogrid reinforced pile supported embankment under train dynamic load[J].Rock and Soil Mechanics,2014,35(6):1600-1606. [13]Low B K,Tang S K,Choa V.Arching in piled embankments[J].Journal of Geotechnical Engineering,ASCE,1993,120(11):917-938. [14]Hewlett W J,Randolph M F.Analysis of piled embankment[J].Ground Engineering,1988,21(3):12-18. [15]魏 静,魏 平,杨松林,等.列车荷载下的桩网结构低路基土拱效应[J].交通运输工程学报,2015,15(6):36-44. WEI Jing,WEI Ping,YANG Song-lin,et al.Soil arching effect of low subgrade with pile-net structure under train load[J].Journal of Traffic and Transportation Engineering,2015,15(6):36-44. [16]陈仁朋,汪焱卫,陈金苗,等.大振次列车动荷载作用下桩网加筋路堤土拱效应模型试验研究[J].铁道学报,2015,37(9):107-113. CHEN Ren-peng,WANG Yan-wei,CHEN Jin-miao,et al.Experimental study on soil arching effect in pile-supported reinforced embankment under dynamic train loads withlarge number of vibration cycles[J].Journal of the China Railway Society,2015,37(9):107-113. [17]Kettil P,Lenhof B,Runesson K,et al.Coupled simulation of wave propagation and water flow in soil induced by high-speed trains[J].International Journal for Numerical and Analytical Methods in Geomechanics,2008,32(11):1311-1319. [18]张崇磊,蒋关鲁,袁胜洋,等.循环荷载下桩网结构路基和垫层动力响应研究[J].岩土力学,2014,35(6):1664-1670. ZHANG Chong-lei,JIANG Guan-lu,YUAN Sheng-yang,et al.Dynamic response analysis of column-net structure subgrade And reinforced cushion under cyclic loading[J].Rock and Soil Mechanics,2014,35(6):1664-1670. [19]肖 宏,蒋关鲁,魏永幸.遂渝线无砟轨道桩网结构路基现场动车试验测试分析[J].铁道学报,2010,32(1):79-84. XIAO Hong,JIANG Guan-lu,WEI Yong-xing.Dynamic Test Analysis on Ballastless-track Column-net Structure Subgrade of the Suining-Chongqing Railway Line[J].Journal of the China Railway Society,2010,32(1):79-84. [20]秦 旗,梁 波,韩仙华.桩网结构路基的地震动力响应分析[J].路基工程,2009(2):141-143. QIN Qi,LIANG Bo,HAN Xian-hua.Seismic dynamic response analysis of pile-net structure subgrade[J].Subgrade Engineering,2009(2):141-143. [21]郭志广,魏立敏,何 群,等.武广高速铁路无砟轨道路基动力响应试验研究[J].振动与冲击,2013,32(14):148-152. GUO Zhi-guang,WEI Li-ming,HE Qun,et al.Tests for dynamic response of ballastless track subgrade of wu-guang high-speed railway[J].Journal of Vibration and Shock,2013,32(14):148-152. [22]朱 彬,王明明.偏压荷载下地铁隧道变形特征及预测研究[J].西安科技大学学报,2015,35(4):458-466. ZHU Bin,WANG Ming-ming.Characteristics and forecast of deformation for shallow buried tunnel[J].Journal of Xi'an University of Science and Technology,2015,35(4):458-466. [23]王 铭,杨更社,叶万军,等.西安城区黄土冲洪积层CFG桩复合地基承载能力可靠度分析[J].西安科技大学学报,2016,36(4):534-540. WANG Ming,YANG Geng-she,YE Wan-jun,et al.Reliability analysis of load capacity of loess alluvium and diluvium CFG piles compound foundation in Urban Area of Xi'an[J].Journal of Xi'an University of Science and Technology,2016,36(4):534-540. [24]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):3793-3800. ZHANG Liang,LUO Qiang,CHEN Ya-mei,et al.Research on bearing behavior of pile-net structure subgrade based on field test[J].Rock and Soil Mechanics,2010,31(12):3793-3800. [25]蔡德钩,杨国涛,叶阳升,等.高速铁路桩网结构加筋网垫受力计算方法[J].中国铁道科学,2013,34(5):1-5. CAI De-gou,YANG Guo-tao,YE Yang-sheng,et al.Calculation method for the mechanical force of reinforced bedding in the geosynthetics reinforced and pile supportd embankments of high speed railway[J].China Railway Science,2013,34(5):1-5.

备注/Memo

备注/Memo:
收稿日期:2020-01-12 责任编辑:李克永
基金项目:国家自然科学基金(51878554,41672308,51378182); 陕西省自然科学基础研究计划重点项目(2018JZ5012)
通信作者:邓友生(1969-),男,湖南桂阳人,博士,教授,博士生导师,E-mail:dengys2009@126.com
更新日期/Last Update: 2020-05-15