| 下穿既有公路的土江冲隧道双层管棚设计及监测分析 |
| |
| 引用本文： | 钟放平.下穿既有公路的土江冲隧道双层管棚设计及监测分析[J].现代隧道技术,2007,44(4):36-40. |
| |
| 作者姓名： | 钟放平 |
| |
| 作者单位： | 湖南省常吉高速公路建设开发有限公司,常德,415100 |
| |
| 摘 要： | 位于常—吉高速公路上的土江冲隧道是一座下穿既有公路的四车道连拱隧道,施工中为了控制地面沉降,在洞口段采用双层管棚作为辅助施工方法,保证了隧道施工安全和319国道的畅通;在隧道开挖过程中,掌子面附近的管棚变形最大,隧道开挖纵向影响范围为1.5~2.0倍开挖高度。文章介绍了管棚设计、施工情况和监测结果。
|
| 关 键 词： | 公路隧道 洞口段施工 管棚支护 变形监测 下穿既有公路 |
| 文章编号： | 1009-6582(2007)04-0036-05 |
Double- layer pipe roofing design and monitoring for Tujiangchong tunnel under- crossing an existing highway |
| |
| Zhong Fangping.Double- layer pipe roofing design and monitoring for Tujiangchong tunnel under- crossing an existing highway[J].Modern Tunnelling Technology,2007,44(4):36-40. |
| |
| Authors: | Zhong Fangping |
| |
| Abstract: | This article introduces the double-layer pipe roofing design,construction and monitoring for the four-lane double arch Tujiangchong tunnel under-crossing an existing highway.The double-layer pipe roofing as a subsidiary construction approach ensured the safe completion of the tunnel and the smooth commissioning of the national trunk highway No.319.During the tunnel excavation the pipe roofing deformed most seriously near the face,the longitudinal affected extent of tunnel excavation was 1.5-2.0 times the excavation height. |
| |
| Keywords: | Highway tunnel Construction of the entrance Pipe roofing Deformation monitoring Under-crossing existing highway |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
