公路隧道明洞合理回填厚度与坡率关系分析  

The Relation Analysis of Slope Ratio and the Reasonable Thickness of the Backfill of Highway Open Cut Tunnel

作　　者：王朝杰[1] 

机构地区：[1]河北省交通规划设计院,石家庄050011

出　　处：《北方交通》2014年第1期112-115,共4页Northern Communications

摘　　要：结合河北某高速公路隧道工程,以隧道进出口明洞为研究对象,系统分析了明洞在不同回填厚度、不同坡率下内力变化规律。总结了不同回填坡率下最大回填土厚度,计算结果具有普遍性,无特殊构造要求、形状尺寸与该工程类似明洞可根据洞顶回填坡率确定最大回填土厚度。Combining with certain expressway tunnel engineering in Hebei, with the open cut tunnel at the hange rule of its internal force has been analyzed under mm backfilling thickness under different slope ratios has entrance and the exit of the tunnel as study object, the c different backfilling thickness and slope ratio. The maxim been summarized and the result shows universality. Maximum backfilling thickness shape and dimension but without special construction requirement can be worked slope ratio of the tunnel roof.

关 键 词：隧道明洞 回填厚度 回填坡率 

分 类 号：U452[建筑科学—桥梁与隧道工程]