邻近既有隧道的超限高边坡支护设计实例分析
摘要:基于超限高边坡在设计参数、侧压力合力大小及分布规律等方面均具有一定的特殊性,直接采用《建筑边坡工程技术规范》(GB 50330)可能使设计偏于不安全,特别是当超限高边坡邻近既有建(构)筑物时破坏后果将非常严重。以邻近既有隧道的某超限高边坡为例,在深入分析边坡可能破坏模式及采用现行规范设计存在的问题后,提出了保证超限高边坡支护安全的解决方法,然后依据现行规范结合解决方法进行了支护设计,并采用数值模拟方法对支护结构、邻近隧道的变形规律进行分析复核后确定了该设计方法。监测结果进一步验证了文中的解决方法、设计思路的安全合理性,可为类似超限高边坡支护设计提供一定的参考。
Abstract:It may make the design unsafe when the Technical Code for Building Slope Engineering GB 50330 are directly used in ultra-high slope, especially when the building adjacent to the ultra-high slope, as the design parameters, the resultant and distribution of the lateral pressure are special. Taking a ultra-high slope adjacent to existing tunnel as an example, a method is presented to solve the supporting security which concluded analysis of slope failure modes and problems of use the current code, and the current code and the results of the above analysis are used to design the ultra-high slope supporting, then the deformation law of ultra-high slope and existing tunnel are analysed by use of numerical simulation method. Safety and rationality of the solution method and design idea are validated by monitoring results, which can provide a reference for similar ultra-high slope.
中文标题:
邻近既有隧道的超限高边坡支护设计实例分析
Analysis of Ultra-high Slope Supporting Design Adjacent to Existing Tunnel
作者:
黄承忠
Huang Chengzhong
作者简介:黄承忠,1983年生,男,硕士,中国地质大学毕业,主要从事岩土工程勘察设计工作。E-mail:179772035@qq.com
通讯地址:
中煤科工集团重庆设计研究院有限公司, 重庆 400042
CCTEGChongqingEngineeringCo.,Ltd,Chongqing400042,China
中图分类号:TU92
doi:10.369.j.issn.1007-2993-2015.03.001
出版物:岩土工程技术
收稿日期:2015-03-02
网络出版日期:2021-07-19
关键词:超限高边坡,既有隧道,支护设计
Key words:ultra-high slope,existing tunnel,supporting design
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