|Table of Contents|

Calculation parameter determination of widened subgrade difference settlement(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年02期
Page:
13-18
Research Field:
Publishing date:
2009-02-20

Info

Title:
Calculation parameter determination of widened subgrade difference settlement
Author(s):
ZHANG Yong-qing; WANG Xuan-cang; WANG Chao-hui
Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang’an University,Xi’an 710064,Shaanxi,China
Keywords:
road engineering;  widened subgrade;  difference settlement;  calculation parameter;  finite element method;  orthogonal design;  neural network
PACS:
U416.1
DOI:
-
Abstract:
In order to simplify the precise determination of the calculation parameter of the subgrade difference settlement in freeway widening, this paper chooses the physical mechanics parameter and the value range of the roadbed soil body according to the demand of orthogonal design, obtains the corresponding artificial neural network analysis sample by using the ANSYS software, builds up the model of artificial neural network, and carries out the neural network simulation about the calculation parameter of the difference settlement. The results show that the calculated result matches the actual measured value well.The values of physical mechanics parameter of groundsill and the subgrade obtained in this way satisfy the accuracy request of the engineering calculation. Thus, a new and practical method to determine the calculation parameter can be given. 6 tabs, 2 figs, 13 refs.

References:

［1］高翔,刘松玉,石名磊.软土地基上高速公路路基扩建加宽中的关键问题［J］.公路交通科技,2004,21(2):2933. GAO Xiang,LIU Songyu,SHI Minglei.Key problems in embankment widening of expressway on soft ground［J］.Journal of Highway and Transportation Research and Development,2004,21(2):2933.
[2]王瑞甫,陈华兴,刘宏力.高填方路基沉降计算方法研究［J］.中外公路,2007,27(6):1416. WANG Ruifu,CHEN Huaxing,LIU Hongli.Study of method of settlement calculation and prediction of high subgrade［J］.Road of China and Abroad,2007,27(6):1416.
[3]张永清，王选仓，王朝辉，等.土工格栅处治填挖交界路基数值模拟与现场试验［J］.交通运输工程学报，2008，8（3）：6367. ZHANG Yongqing,WANG Xuancang,WANG Chaohui,et al.Numerical simulation and field test at the cut to fill location of subgrade treated geogrids［J］.Journal of Traffic and Transportation Engineering,2008,8(3):6367.
[4]王东耀,折学森，叶万军，等.高速公路软基最终沉降预测的范例推理方法［J］.长安大学学报:自然科学版,2006,26(1):2023. WANG Dongyao,SHE Xuesen,YE Wanjun,et al.Casebased reasoning approach to settlement of expressway on soft foundation［J］.Journal of Changan University:Natural Science Edition,2006,26(1):2023.
[5]邓卫东，张兴强，陈波，等.路基不均匀沉降对沥青路面受力变形影响的有限元分析［J］.中国公路学报,2004,17(1):1215. DENG Weidong,ZHANG Xingqiang,CHEN Bo,et al.Nonlinear FEM analysis of influence of asphalt pavement under nonhomogenous settlement of roadbed［J］.China Journal of Highway and Transport,2004,17(1):1215.
[6]傅珍,王选仓，陈星光，等.拓宽路基差异沉降特性和影响因素［J］.交通运输工程学报,2007,7(1):5457. FU Zhen,WANG Xuancang,CHEN Xingguang,et al.Differential settlement characteristics and influencing factors of widening subgrade［J］.Journal of Traffic and Transportation Engineering,2007,7(1):5457.
[7]李进军,黄茂松,王育德.交通荷载作用下软土地基累积塑性变形分析［J］.中国公路学报,2006,19(1):15. LI Jinjun,HUANG Maosong,WANG Yude.Analysis of cumulative plastic deformation of soft clay foundation under traffic loading［J］.China Journal of Highway and Transport,2006,19(1):15.
[8]郑传超,夏永旭,王秉纲,等.道路结构力学计算［M］.北京：人民交通出版社，2003.
[9]张起森.道路工程有限元分析法［M］.北京：人民交通出版社,1983.
[10]唐朝生，刘义怀，施斌，等.新老路基拼接中差异沉降的数值模拟［J］.中国公路学报，2007，20（2）：1317. TANG Chaosheng,LIU Yihuai,SHI Bin,et al.Numerical simulation on differential settlement of jointing of new and old roadbed［J］.China Journal of Highway and Transport,2007，20（2）：1317.
[11]梁燕，赵桂娟，谢永利，等.黄土增湿变形的数值模型［J］.建筑科学与工程学报，2007，24（3）：4346. LIANG Yan,ZHAO Guijuan,XIE Yongli,et al.Numerical model of loess moistening deformation［J］.Journal of Architecture and Civil Engineering,2007，24（3）：4346.
[12]Li D Q,Selig E T.Cumulative plastic deformation for finegrained subgrade soils［J］.Journal of Geotechnical Engineering,1996,122(12):10061013.
[13]刘思峰，郭天榜，党耀国，等.灰色系统理论及其应用［M］.北京：科学出版社，2000.

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Last Update: 2009-02-20