全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

循环荷载作用下软土动力特性试验研究

Keywords: 道路工程,软土,试验研究,循环荷载,动强度,动骨干曲线,动模量

Full-Text   Cite this paper   Add to My Lib

Abstract:

为研究循环荷载作用引起的软土动力特性变化及由此导致的地基承载力不足等问题,以营口软土为研究对象,通过动三轴试验,研究了动应力幅值、固结围压、固结比、振动频率和振动次数对软土动力特性的影响。试验结果表明营口软土具有明显的结构性,其动应变-振动次数(εd-lgN)曲线和动骨干曲线存在明显的应变转折点,超过此应变转折点后,土体变形迅速增加;动强度随固结围压的增加而增大,固结比和振动频率对软土动强度的影响却并非简单的一致增大或减小;动弹性模量随固结围压、固结比和振动频率的增加而增大,而动阻尼比则随着固结围压和固结比的增加而减小,随振动频率的增加而增大。

References

[1]  张勇. 武汉软粘土的变形特征与循环荷载动力响应研究 [D]. 武汉: 中国科学院研究生院, 2008.ZHANG Yong. Deformation Characteristics of Wuhan SoftClay and Its Dynamic Responses Subjected to CyclicLoading [D]. Wuhan: Graduate School of ChineseAcademy of Sciences, 2008.
[2]  王军,陈春雷,丁光亚. 循环荷载下温州超固结软土动强度与变形分析 [J]. 自然灾害学报,2009,18(4): 125-131.WANG Jun,CHEN Chun-lei,DING Guang-ya. Analysisof Dynamic Strength and Deformation of WenzhouOverconsolidated Soft Clay under Cyclic Loading [J].Journal of Natural Disasters, 2009, 18 (4): 125-131.
[3]  HARDIN B O,DRNEVICH V P. Shear Modulus andDamping in Soils: Design Equation Curves [J]. Journalof the Soil Mechanics and Foundations Division,ASCE,1972, 98 (7): 279-287.
[4]  HARDIN B O, BLACK W L. Closure to VibrationModulus of Normally Consolidated Clay: Design Equationsand Curves [J]. Journal of the Soil Mechanics andFoundations Division,ASCE,1969,95 (6): 1531-1537.
[5]  HARDIN B O,DRNEVICH V P. Shear Modulus andDamping in Soil: Measurement and Parameter Effects[J]. Journal of the Soil Mechanics and FoundationsDivision,ASCE, 1972, 98 (6): 603-624.
[6]  YASHUARA K,YAMANOUCHI T,HIRAO K. CyclicStrength and Deformation of Normally Consolidated Clay[J]. Soils and Foundations, 1982,22 (3): 77-91.
[7]  YASUHARA K,MURAKAMI S,SONG B W. PostcyclicDegradation of Strength and Stiffness for Low Plasticity Silt[J]. Journal of Geotechnical and GeoenvironmentalEngineering, 2003, 129 (8): 756- 769.
[8]  FUJIKAWA K. On Optimistic Design of Low EmbankmentRoad on Soft Subsoil by Considering the Traffic-load-induced Settlement [D]. Saga: Saga University, 1996.
[9]  CHAI J C,MIURA N. Traffic-load-induced PermanentDeformation of Road on Soft Subsoil [J]. Journal ofGeotechnical and Geoenvironmental Engineering,2002,128 (11): 907-916.
[10]  张勇,孔令伟,郭爱国,等. 循环荷载下饱和软黏土的累积塑性应变试验研究 [J]. 岩土力学,2009,30(6): 1542-1548.ZHANG Yong,KONG Ling-wei,GUO Ai-guo,et al.Cumulative Plastic Strain of Saturated Soft Clay underCyclic Loading [J]. Rock and Soil Mechanics, 2009,30(6): 1542-1548.
[11]  魏星,黄茂松. 交通荷载作用下公路软土地基长期沉降的计算 [J]. 岩土力学,2009,30 (11): 3342-3348.WEI Xing,HUANG Mao-song. A Simple Method toPredict Traffic-load-induced Permanent Settlement of Roadon Soft Subsoil [J]. Rock and Soil Mechanics, 2009, 30(11): 3342-3348.
[12]  柳艳华,黄茂松,李帅. 循环荷载下结构性软黏土的各向异性边界面模型 [J]. 岩土工程学报,2010,32(7): 1065-1071.LIU Yan-hua, HUANG Mao-song, LI Shuai. AnAnisotropic Bounding Surface Model for Structured SoftClay under Cyclic Loading [J]. Chinese Journal ofGeotechnical Engineering, 2010,32 ( 7 ): 1065-1071.
[13]  丁伯阳,张勇. 杭州第四系软土动力特性试验与土结构性影响的探讨 [J]. 岩土力学,2012,33 (2):336-342.DING Bo-yang,ZHANG Yong. Discussion on DynamicTest and Characteristics of Structural Properties ofQuaternary Soft Clay in Hangzhou Region [J]. Rock andSoil Mechanics, 2012,33 (2): 336-342.
[14]  雷华阳,姜岩,陆培毅,等. 交通荷载作用下结构性软土动应力- 动应变关系试验研究 [J]. 岩石力学与工程学报, 2008,27 (增 1): 3052-3056.LEI Hua-yang, JIANG Yan, LU Pei-yi, et al.Experimental Study of Dynamic Stress-strain Relation ofStructural Soft Soil under Traffic Load [J]. ChineseJournal of Rock Mechanics and Engineering,2008,27(S1): 3052-3056.
[15]  刘升传,曹渊,杨志文. 动荷载下软土路基变形规律研究 [J]. 铁道工程学报, 2011 (5): 22-26.LIU Sheng-chuan,CAO Yuan,YANG Zhi-wen. Study onthe Deformation Behavior of Soft Soil Subgrade underDynamic Load [J]. Journal of Railway EngineeringSociety, 2011 (5): 22-26.
[16]  刘升传,曹渊. 新建铁路软土路基沉降规律研究 [J].铁道工程学报, 2010 (5): 1-3,8.LIU Sheng-chuan,CAO Yuan. Research on SettlementLaw of Soft Soil Subgrade of New Railway [J]. Journal ofRailway Engineering Society, 2010 (5): 1-3,8.
[17]  赵俊明,刘松玉,石名磊,等. 交通荷载作用下低路堤动力特性试验研究 [J]. 东南大学学报: 自然科学版,2007,37 (5): 921-925.ZHAO Jun-ming,LIU Song-yu,SHI Ming-lei,et al.Experimental Study on Dynamic Response of LowEmbankment under Traffic Load [J]. Journal of SoutheastUniversity: Natural Science Edition,2007,37 ( 5 ):921-925.
[18]  CHAI Jin-chun, MIURA N. Traffic Load InducedPermanent Deformation of Road on Soft Subsoil [J].Journal of Geotechnical and Geoenvironmental Engin-eering,2002, 128 (11): 907-916.
[19]  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, 28 (4): 89-94.LIANG Bo,LUO Hong,SUN Chang-xin. Simulated Studyon Vibration Load of High Speed Railway [J]. Journal ofthe China Railway Society, 2006, 28 (4): 89-94.
[20]  陈颖平,黄 博,陈云敏. 循环荷载作用下软黏土不排水累积变形特性 [J]. 岩土工程学报,2008,30 (5):764-768.CHEN Ying-ping, HUANG Bo, CHEN Yun-min.Reliability Analysis of High Level Backfill Based onChaotic Optimization
[21]  [J ]. Chinese Journal ofGeotechnical Engineering, 2008,30 (5): 764- 768.
[22]  陈颖平,黄 博,陈云敏. 循环荷载作用下结构性软粘土的变形和强度特性 [J]. 岩土工程学报,2005,27(9): 1065-1071.CHEN Ying-ping, HUANG Bo, CHEN Yun-min.Deformation and Strength of Structural Soft Clay underCyclic Loading [J]. Chinese Journal of GeotechnicalEngineering, 2005, 27 (9): 1065- 1071.
[23]  张向东,李 旭,刘家顺,等. 动荷载作用下风积土路基振陷变形 [J]. 公路交通科技,2011,28 (12):39-43.ZHANG Xiang-dong, LI Xu, LIU Jia-shun, et al.Vibration Excited Subsidence of Aeolian Subsoil underDynamic Load [J ]. Journal of Highway andTransportation Research and Development, 2011,28(12): 39-43.
[24]  张宏博,黄茂松,宋修广. 循环荷载作用下粉砂土路基累积变形试验研究 [J]. 公路交通科技,2009,26(9): 6-12.ZHANG Hong-bo,HUANG Mao-song,SONG Xiu-guang.Experimental Study on Cumulative Deformation of SiltySand Roadbed under Repeated Loading [J]. Journal ofHighway and Transportation Research and Development,2009,26 (9): 6-12.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133