华东交通大学学报2016，Vol.33Issue(2)：35-41,7.
浅埋黄土隧道下穿道路施工沉降及控制研究
Research on Settlement Control of Shallow Buried Loess Tunnel Underpass Road
何知思 1杨新安1
作者信息
- 1. 同济大学道路与交通工程教育部重点实验室，上海201804
- 折叠
摘要
Abstract
The surface settlement of shallow buried loess tunnel underpass road is an important safety factor for the tunnel construction. Under the background of Lijiagebu NO.1 loess tunnel passing through Chengda Highway, based on relevant specifications and similar projects, this paper proposed that the settlement standard of the shallow buried tunnel underpass road should be controlled within 50mm. By monitoring and analyzing the sur-face settlement of test section of tourist highway, this paper modified the construction method and construction technology. Based on FLAC3D, the excavation and the process of supporting with improved construction method were dynamically simulated. By analyzing the calculation and monitoring settlement value of road surface and vault of tunnel, this paper proved that 6-step CRD method in shallow buried loess tunnel underpass road can better control surface settlement, which indicated the rationality of the calculation model and parameters; and it provided reasonable control measures with high referential value for improving analogous construction methods of shallow buried loess tunnel undercrossing road.关键词
浅埋隧道/下穿道路/数值计算/沉降控制Key words
shallow buried tunnel/underpass road/numerical calculation/settlement control分类
交通运输引用本文复制引用
何知思,杨新安..浅埋黄土隧道下穿道路施工沉降及控制研究[J].华东交通大学学报,2016,33(2):35-41,7.
