摘要
针对浅埋矩形砖混结构电力隧道附近可能存在的空洞隐患,通过借助地质雷达探测技术,对隐伏空洞病害体进行布线探测研究,并给出圆形和方形空洞的典型地质雷达图谱特征,有助于提高对空洞病害类型识别的准确性。同时,通过建立9种空洞分布工况模型,研究空洞位置对电力隧道结构内力及周边道路沉降的影响差异。研究结果表明,当空洞位于135°时,隧道底板结构剪力和弯矩达最大值;当空洞位于115°时,隧道边墙结构轴力达最大值;当空洞位于155°时,周边道路沉降达最大值。当空洞出现在浅埋矩形砖混结构电力隧道边墙中下部和底板两侧附近时,其影响最显著,应加强对隧道中下部和底板两侧空洞雷达测线布置与探测工作,以期消除电力隧道附近空洞隐患。
Aiming at the potential hidden holes near the shallow rectangular brick-concrete structure power tunnel,by means of the ground penetrating radar detection technology,the wiring detection of concealed cavity disease body is studied,and the typical ground penetrating radar map features of the circular and square cavities are given,which is helpful to improve the accuracy of the identification of cavity disease types.Through the establishment of nine kinds of cavity distribution working mode models,the influence difference of cavity location on the internal force of power tunnel structure and settlement of surrounding roads are studied.The research results show that,when the cavity is at 135°,the shear force and bending moment of the tunnel bottom plate structure reached the maximum value.When the cavity is at 115°,the axial force of tunnel wall structure reached the maximum value.When the cavity is at 155°,the surface settlement of surrounding roads reached the maximum value.Therefore,when the cavity is located near the middle and lower part of the side wall and on both sides of the bottom plate of the shallow buried rectangular brick-concrete structure power tunnel,the adverse effect is the most significant.The research on the ground penetrating radar line arrangement in the middle and lower part of the power tunnel and on both sides of the bottom plate should be strengthened to eliminate the hidden dangers of the holes near the power tunnels.
作者
田岗
金春峰
张海军
师海
杜衍庆
戚艳丽
宋琳琳
TIAN Gang;JIN Chunfeng;ZHANG Haijun;SHI Hai;DU Yanqing;QI Yanli;SONG Linlin(China Electronic Engineering Design Institute Co.,Ltd.,Beijing 100142,China;C+E Center for Engineering Research Test and Appraisal Co.,Ltd.,Beijing 100142,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Tianjin Municipal Engineering Design&Research Institute Co.,Ltd.,Tianjin 300051,China)
出处
《施工技术（中英文）》
CAS
2022年第3期24-30,41,共8页
Construction Technology
基金
国家自然科学基金(42172311)
天津市交通运输科技发展计划(2019B-25)
中国电子工程设计院有限公司科研项目(KJ-20-36,KJ-21-36)。
关键词
隧道
道路
空洞
地质雷达
受力性能
沉降
tunnels
roads
cavity
ground penetrating radar
mechanical performance
settlement
