基于动变形控制法的软岩路基填筑材料回弹模量控制

发布时间：2018-04-24 02:44

本文选题：软岩路基 + 动变形控制　；参考：《上海交通大学学报》2017年04期

【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.
[Abstract]:According to the principle of deformation coordination of roadbed and pavement, combined with the control standard of roadway deflection, the allowable value of dynamic deformation on the top of soft rock subgrade is obtained. The dynamic response solution of elastic layered highway structure under vibration load of double tire is derived by means of transfer reflection matrix method and superposition principle, and the dynamic deformation of roadbed top surface of typical soft rock highway is calculated by using Hankel numerical inversion technique. Based on the dynamic deformation control method, the critical value of the elastic modulus of the corresponding fillers in different soft rock filling areas is determined, and the thickness of the subgrade structure layer is determined according to the existing highway codes. The elastic modulus control requirements for soft rock filling areas under dynamic deformation are proposed and the soft rock fillers are classified according to the elastic modulus. The research results can provide guidance for the subzone optimization of soft rock filling.
【作者单位】：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;武汉新华园置业有限公司;中交第二公路勘察设计研究院有限公司;贵州高速公路集团有限公司;
【基金】：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
【分类号】：U416.1

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