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高速公路路基加宽土工格栅加筋优化技术研究

沈立森, 杨广庆, 程和堂, 郑瑞君, 陈君朝

沈立森, 杨广庆, 程和堂, 郑瑞君, 陈君朝. 高速公路路基加宽土工格栅加筋优化技术研究[J]. 岩土工程学报, 2013, 35(4): 789-793.
引用本文: 沈立森, 杨广庆, 程和堂, 郑瑞君, 陈君朝. 高速公路路基加宽土工格栅加筋优化技术研究[J]. 岩土工程学报, 2013, 35(4): 789-793.
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SHEN Li-sen, YANG Guang-qing, CHENG He-tang, ZHENG Rui-jun, CHEN Jun-chao. Optimization technology for geogrid-reinforced subgrade widening projects of highways[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(4): 789-793.
Citation: SHEN Li-sen, YANG Guang-qing, CHENG He-tang, ZHENG Rui-jun, CHEN Jun-chao. Optimization technology for geogrid-reinforced subgrade widening projects of highways[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(4): 789-793.
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高速公路路基加宽土工格栅加筋优化技术研究  English Version

  • 1. 石家庄铁道大学土木工程学院，河北 石家庄 050043; 2. 河北省高速公路石安改扩建筹建处，河北 邢台 054004; 3. 河北省高速公路京石改扩建筹建处，河北 保定 071051

基金项目: 国家自然科学基金项目（51178280）；河北省科技计划项目（11215612D）；河北省交通运输厅科技计划项目（Y-2011001）
详细信息
    作者简介:

    沈立森(1986- )，男，硕士研究生，主要从事岩土工程与加筋结构研究。E-mail: shenls775@163.com。

  • 中图分类号: TU47

Optimization technology for geogrid-reinforced subgrade widening projects of highways

  • 1. School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China; 2. Department of Preparatory Construction for Hebei Province Shi'an Reconstruction & Extension Expressway, Xingtai 054004, China; 3. Department of Preparatory Construction for Hebei Province Jingshi Reconstruction & Extension Expressway, Baoding 071051, China

摘要

    摘要
  • 摘要: 基于分析高速公路改扩建工程新老路基间不协调变形的原因、控制技术方法及控制标准，对高速公路改扩建路基加宽土工格栅加筋优化技术进行了研究。以京港澳高速公路石家庄至磁县（冀豫界）段改扩建工程典型试验段为研究对象，建立了高速公路路基加宽有限元计算模型，分析了施工期路基填筑高度和竣工后15 a的地表附加沉降、附加水平位移和路面横坡比变化规律。采用土工格栅加筋新路基技术，通过改变土工格栅的弹性模量、加筋层数和加筋长度等技术参数，研究分析了土工格栅参数变化对路基表面沉降量及路面横坡比的影响。根据计算结果提出了高速公路路基加宽土工格栅加筋优化设计技术方案，该研究结果为高速公路改扩建土工格栅加筋路基设计提供了技术参考。
    Abstract: The causes, control methods and standards for uncoordinated deformation between new and old subgrades in highway reconstruction and extension projects are analyzed. According to the typical test section of Shijiazhuang to Cixian (demarcation line between Hebei Province and Henan Province) reconstruction and extension project of Beijing-Hongkong- Macao Highway, a finite element model for subgrade widening of highways is established. The additional settlement and horizontal displacement of ground surface as well as transverse slope ratio of pavement are analyzed during the construction period of new subgrade and after construction of 15 years. The geogrid-reinforced technology for the new subgrade is used in this project. The geogrid modulus, reinforced layers and reinforcement length are changed during calculation. The effects of these parameters on surface settlement of the subgrade and transverse slope ratio of pavement are studied. Based on the computational results, the optimization design technology of geogrid-reinforced subgrade widening for highways is presented. The test results can be used as a reference for future studies and design of geogrid-reinforced subgrade in highway reconstruction and extension projects.
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    • 参考文献(10)
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    [10] JTGD30—2004 公路路基设计规范[S]. 北京: 人民交通出版社, 2004. JTGD30—2004 Specifications for design of highway subgrades[S]. Beijing: People's Traffic Press, 2004.(in Chinese)
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出版历程
  • 收稿日期:  2012-04-27
  • 发布日期:  2013-04-17

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