| 厦门淤泥地层大跨度浅埋暗挖地下通道三维变形分析 |
| |
| 引用本文： | 杜俊,梅志荣,张军伟.厦门淤泥地层大跨度浅埋暗挖地下通道三维变形分析[J].现代隧道技术,2010,47(1). |
| |
| 作者姓名： | 杜俊 梅志荣 张军伟 |
| |
| 作者单位： | 1. 中国铁道科学研究院,北京,100081;中铁西南科学研究院有限公司,成都,610031
2. 中铁西南科学研究院有限公司,成都,610031 |
| |
| 摘 要： | 以厦门市典型淤泥地层修建大跨度浅埋暗挖城市地下通道为工程背景,借助abaqus有限元软件分析市中心某地下通道的三维变形效应和特征,对不同工况下的预加固效果做出评价.分析结果表明,在地下通道下承的大体积淤泥中采用高压旋喷桩斜向加固地层,在开挖区域及其两侧采用高压旋喷桩水平向加固地层,并结合长管棚超前预加固可以很好地控制基础沉降和地表沉陷,若进一步用易切削玻璃纤维锚杆对"待挖核心体"进行纵向加固,则可以更好地控制土体变形,降低施工对周围环境、建筑物以及地下管线的影响.
|
| 关 键 词： | 淤泥地层 浅埋暗挖 预加固 数值模拟 |
3-D Deformation Analysis of Xiamen Long-span Underground Passage Embedded in Silt and Built by Shallow Mining Excavation |
| |
| Du Jun,Mei Zhirong,Zhang Junwei.3-D Deformation Analysis of Xiamen Long-span Underground Passage Embedded in Silt and Built by Shallow Mining Excavation[J].Modern Tunnelling Technology,2010,47(1). |
| |
| Authors: | Du Jun Mei Zhirong Zhang Junwei |
| |
| Institution: | Du Jun1,2 Mei Zhirong2 Zhang Junwei1,2 (1 China Academy of Railway Sciences,Beijing 100081,2 China Railway Southwest Research Institute,Co.,Ltd.,Chengdu 610031) |
| |
| Abstract: | With typical Ximen long-span underground passages embedded in silt and built by shallow mining excavation as the project background, 3 -D deformation characteristics of a passage in the city center was analysed by means of FE software absqus to evaluate the pre -reinforcement effect under different working conditions. Results indicated, obligue -oriented reinforcement of the passage underlying silt mass by adopting pressurized rotary jet grouting, horizontal reinforcement of the excavated zone and two sides... |
| |
| Keywords: | Silt Shallow mining excavation Pre-reinforcement Numerical simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
