摘要
随着地下交通的大力发展,地下隧道施工难免会下穿越既有建筑,且隧道施工引起的土体扰动可能会对周围建筑产生不利影响。而矿山法施工工艺涉及爆破施工,使围岩破裂松弛,且施工时支护的及时性相对较差,此种情况对既有建筑产生的潜在风险更大。因此,本文以广东省某下穿隧道邻近高压电塔为背景,采用有限元程序ABAQUS分析了矿山法隧道开挖对邻近电塔产生的位移影响。考虑风荷载、导线荷载等对电塔这类高耸结构物比较重要的稳定性因素,分析了隧道开挖整个过程中塔基和电塔不同方向的位移变化过程和变化规律,给出合理建议,旨在为此类工程提供一定的参考价值。
With the development of underground traffic,the construction of underground tunnels will inevitably cross below the existing buildings,and the soil disturbance caused by the construction may adversely affect the surrounding buildings. Mining tunnel method involves blasting construction,which can cause the surrounding rock to break down and relax,and poor timeliness of completing the supporting system will bring higher risk on the exsiting buildings. Therefore,taking a electricity pylon next to a underground tunnel in Guangdong province as background,the displacement effect of tunnel excavation using mining method on the pylon is analyzed by the finite element program ABAQUS. Considering such stability factors as wind load and conductor load,the displacement changing process and changing law of the tower foundation and tower body in different directions during tunnel excavation are analyzed,reasonable suggestions are given,which will provide certain reference value for similar projects.
作者
舒浩恺
罗伟洲
Shu Haokai;Luo Weizhou(School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510000)
出处
《工程建设》
2019年第3期9-13,共5页
Engineering Construction
关键词
隧道施工
矿山法
高压电塔
有限元分析
tunnel construction
mining method
electricity pylon
finite element analysis
