摘要
依托新鼓山隧道下穿高速公路工程,运用数值模拟方法分析了交通荷载下超浅埋隧道下穿高速公路的动力响应,对此分析有无交通荷载时的沉降规律.在通过数值模拟获得沉降槽宽度系数的基础上,结合Peck沉降理论分析公路不平整度要求,并考虑维修不平整度、公路修筑使用年限和地质条件,与前人研究的3种方法进行对比分析,提出适用于新鼓山隧道下穿公路的变形控制标准为30 mm,最后结合工程实例验证了该方法计算沉降控制基准的合理性.该研究成果可为类似工程沉降基准控制提供参考.
Relying on the new Gushan tunnel underpassing expressway project,numerical simulation is used to study the dynamic response of the ultra-shallow tunnel underpassing the expressway with or without traffic load,and the set-tlement law with and without traffic load is compared.On the basis of obtaining the width coefficient of settlement trough through numerical simulation,combining analysis based on Peck settlement theory and road roughness require-ments,and considering the roughness of maintenance,the service life of road construction and geological conditions,and the three methods are studied by the predecessors.Through comparative analysis,it is proposed that the deforma-tion control standard applicable to the Xingushan Tunnel underpassing the highway is 30mm.Finally,the rationality of the settlement control standard calculated by this method is verified by the engineering example.The study results can provide reference and basis for the settlement benchmark control of similar projects.
作者
黄林祥
HUANG Lin-xiang(China Railway Eighteenth Bureau Group Co.,Ltd.,Tianjin 300222,China)
出处
《兰州工业学院学报》
2021年第3期36-41,共6页
Journal of Lanzhou Institute of Technology
基金
国家自然科学基金(11662007)
甘肃省建设科技攻关项目(JK2018-33)。
关键词
下穿高速公路
超浅埋隧道
沉降控制基准
Peck公式的应用
underpass expressway
super shallow buried tunnel
settlement control criterion
application of Peck formula
作者简介
黄林祥(1979-),男,江西抚州人,工程师.
