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拼接工况下路基的参数反演与沉降特性

韩丁,  谭华,  黄晓明,  扈惠敏

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文章导航 > 交通运输工程学报  > 2012 >  12(6): 7-12
韩丁, 谭华, 黄晓明, 扈惠敏. 拼接工况下路基的参数反演与沉降特性[J]. 交通运输工程学报, 2012, 12(6): 7-12. doi: 10.19818/j.cnki.1671-1637.2012.06.002
引用本文: 韩丁, 谭华, 黄晓明, 扈惠敏. 拼接工况下路基的参数反演与沉降特性[J]. 交通运输工程学报, 2012, 12(6): 7-12. doi: 10.19818/j.cnki.1671-1637.2012.06.002
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HAN Ding, TAN Hua, HUANG Xiao-ming, HU Hui-min. Parametric inversion and settlement characteristic of subgrade in joint condition[J]. Journal of Traffic and Transportation Engineering, 2012, 12(6): 7-12. doi: 10.19818/j.cnki.1671-1637.2012.06.002
Citation: HAN Ding, TAN Hua, HUANG Xiao-ming, HU Hui-min. Parametric inversion and settlement characteristic of subgrade in joint condition[J]. Journal of Traffic and Transportation Engineering, 2012, 12(6): 7-12. doi: 10.19818/j.cnki.1671-1637.2012.06.002
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拼接工况下路基的参数反演与沉降特性

doi: 10.19818/j.cnki.1671-1637.2012.06.002
  • 1.

    合肥工业大学 交通运输工程学院, 安徽 合肥 230009

  • 2.

    广西交通科学研究院 广西道路结构 与材料重点实验室培育基地, 广西 南宁 530007

  • 3.

    东南大学 交通学院, 江苏 南京 210096

  • 4.

    合肥工业大学 土木与水利工程学院, 安徽 合肥 230009

基金项目: 

国家自然科学基金项目 51008109

安徽省高速公路总公司交通科技项目 AHJT200901

中央高校基本科研业务费专项资金项目 2010HGBZ0540

详细信息
    作者简介:

    韩丁(1982-), 男, 安徽肥东人, 合肥工业大学讲师, 工学博士, 博士后, 从事道路基础与面层结构研究

  • 中图分类号: U416.1

Parametric inversion and settlement characteristic of subgrade in joint condition

  • 1.

    School of Transportation Engineering, Hefei University of Technology, Hefei 230009, Anhui, China

  • 2.

    Guangxi Key Laboratory Cultivation Base of Road Structure and Materials, Guangxi Transportation Research Institute, Nanning 530007, Guangxi, China

  • 3.

    School of Transportation, Southeast University, Nanjing 210096, Jiangsu, China

  • 4.

    School of Civil Engineering, Hefei University of Technology, Hefei 230009, Anhui, China

More Information

    摘要
  • 摘要: 应用路基和土基的Duncan-Chang模型, 选用拼接路基顶面的最大沉降量作为目标函数, 研究了路基拼接工况下模型的灵敏度函数和最敏感参数, 使用实体工程中沉降板的检测数据进行了参数反演, 并根据反算参数计算了铺筑路面结构层引起的路基顶面差异沉降。研究结果表明: 拼接工况下, 路基E-B模型对模量指数n最敏感, 模量系数kE也有较大影响; 土基E-B模型对破坏比Rf最敏感, kE和n也有较大影响; 埋设在土基顶面和路堤中层的沉降板检测数据可用来反算土基和路基Duncan-Chang模型的最敏感参数; 拼接路基表面的工后沉降计算曲线与类似工程实测沉降曲线具有较高的相似性, 采用反算参数的数值仿真可以描述拼接工况下路基的沉降特征。

     

    Abstract: The Duncan-Chang models for subgrade and soil were used, the maximum settlement of joint subgrade surface was chosen as an objective function, and the sensitivity functions and most sensitive parameters of the models were studied in the joint condition of subgrade. The detection data of settlement plates in actual engineering were used to inverse relevant parameters. Differential settlements of subgrade surface after laying pavement structure were calculated by using relevant parameters. Analysis result indicates that modulus index n is the most sensitive parameter for E-B model of subgrade, and the model is also obviously affected by modulus coefficient kE. Damage ratio Rf is the most sensitive parameter for E-B model of soil, and the model is also obviously affected by kE. and n. Detection data of settlement plates buried on soil surface and embankment middle layer can be used to inverse the most sensitive parameters of the Duncan-Chang models. Calculated settlement curves of joint subgrade surface after constructionhave good comparability with actual measurement curves of similar engineering. The numerical simulation with inversion parameters can describe the settlement characteristics of subgrade in joint condition. 3 tabs, 10 figs, 14 refs.

     

    • HTML全文

  • 图  1  沉降板埋设布置

    Figure  1.  Inbuilt arrangement of settlement plates

    下载: 全尺寸图片 幻灯片

    图  2  灵敏度分析的计算模型

    Figure  2.  Computation model of sensitivity analysis

    下载: 全尺寸图片 幻灯片

    图  3  路基E-B模型的参数灵敏度分析

    Figure  3.  Parameter sensitivity analysis of subgrade E-B model

    下载: 全尺寸图片 幻灯片

    图  4  土基E-B模型的参数灵敏度分析

    Figure  4.  Parameter sensitivity analysis of soil E-B model

    下载: 全尺寸图片 幻灯片

    图  5  沉降分析模型

    Figure  5.  Settlementanal y sismodel

    下载: 全尺寸图片 幻灯片

    图  6  土基E-B模型参数Rf的反算

    Figure  6.  Back calculation of Rf in soil E-B model

    下载: 全尺寸图片 幻灯片

    图  7  路基E-B模型参数n的反算

    Figure  7.  Back calculation of n in subgrade E-B model

    下载: 全尺寸图片 幻灯片

    图  8  不同阶段拼接路基表面的沉降曲线

    Figure  8.  Surface settling curves of joint subgrade at different stages

    下载: 全尺寸图片 幻灯片

    图  9  沪宁高速公路拓宽路基沉降检测

    Figure  9.  Settlement detection of joint subgrade in Hu-Ning Freeway

    下载: 全尺寸图片 幻灯片

    图  10  杭甬高速公路拓宽路基沉降检测

    Figure  10.  Settlement detection of joint subgrade in Hang-Yong Freeway

    下载: 全尺寸图片 幻灯片

    表  1  土体材料参数

    Table  1.   Material parameters of soil

    表  2  沉降检测结果

    Table  2.   Detection results of settlements

    表  3  材料参数的基准值

    Table  3.   Reference values of material parameters
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  • 收稿日期:  2012-07-21
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