上海交通大学学报

上海交通大学学报（自然版） ›› 2017, Vol. 51 ›› Issue (4): 450-.

• 兵器工业 • 上一篇    下一篇

基于动变形控制法的软岩路基填筑材料回弹模量控制

詹永祥1，龙小波2，姚海林1，张静波3，陈羽4   

  1. 1. 中国科学院 武汉岩土力学研究所, 岩土力学与工程国家重点实验室，武汉 430071；
    2. 武汉新华园置业有限公司，武汉 430035； 3. 中交第二公路勘察设计研究院有限公司，武汉 430056；
    4. 贵州高速公路集团有限公司，贵阳 550004
  • 出版日期:2017-04-03 发布日期:2017-04-03
  • 基金资助:

    国家重点基础研究发展规划（973）项目（2013CB036405），国家自然科学基金项目（41402317，41472290，41672312），贵州省交通运输厅科技项目(2014122007)，中国科学院科技服务网络计划（STS计划）资助

The Control of Resilient Modulus of Soft Rock as Filling Material for#br#  Subgrade Based on Dynamic Deformation Control Method

ZHAN Yongxiang1，LONG Xiaobo2，YAO Hailin1，ZHANG Jingbo3，CHEN Yu4   

  1. 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and
     Soil Mechanics,  Chinese Academy of Sciences, Wuhan 430071, China; 2.Wuhan Xinhuayuan
     Real Estate Co., Ltd., Wuhan 430035, China; 3. CCCC Second Highway Consultants Co., Ltd.,
     Wuhan 430056, China; 4. Guizhou Expressway Group Co., Ltd., Guiyang 550004, China
  • Online:2017-04-03 Published:2017-04-03

摘要：

根据路基路面变形协调原理，结合国内公路相关规范对路面弯沉的控制标准，获得软岩路基顶面动变形允许值；利用传递反射矩阵方法和叠加原理推导了双轮胎振动荷载作用下弹性层状公路结构的动力响应解；采用Hankel数值逆变换技术计算出实例工程中典型软岩公路路基顶面的动变形，基于动变形控制法确定了不同软岩填筑区域对应填料的回弹模量临界值；根据现有公路规范规定的路基结构层厚度，提出满足动变形条件下的软岩填筑区域所需回弹模量控制要求，并以回弹模量为依据对软岩填料进行了分类.研究成果可为软岩填料分区优化填筑提供指导.

关键词: 软岩路基, 动变形控制, 层状公路结构, 传递反射矩阵方法, 软岩分类

Abstract:

Based on deformation compatibility principle of subgrade and pavement, combined with the pavement deflection control standard of current highway related code, the tolerance value of dynamic deformation of soft rock subgrade top is obtained. The theoretical solutions of elastic multilayered road structures under dynamic doublecircular loads are derived by using the transmissionreflection matrix method and the superposition principle. The dynamic deformation of soft rock subgrade top is deduced with inverse Hankel transformation. The critical value of resilient modulus of soft rock filled in area is determined based on the dynamic deformation control method. According to the thickness of the subgrade structure provided by the existing highway code,  control requirements of the resilient modulus of the soft rock filler satisfying the condition of dynamic deformation is put forward, and the soft rock filler is classified according to the resilient modulus. The results of this research can provide guidance for the optimization of the soft rock filler.

Key words:  soft rock subgrade, dynamic deformation control, multilayered road structure, transmissionreflection matrix method, soft rock classification

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