| 大跨度黄土隧道CRD法优化研究 |
| |
| 引用本文： | 许文锋,张峰,陈建平.大跨度黄土隧道CRD法优化研究[J].防灾减灾工程学报,2009,29(5):572-576. |
| |
| 作者姓名： | 许文锋 张峰 陈建平 |
| |
| 作者单位： | 1. 国家海洋局第三海洋研究所,福建,厦门,361005;中国地质大学(武汉)工程学院,武汉,430074
2. 中国地质大学(武汉)工程学院,武汉,430074 |
| |
| 摘 要： | 针对大跨度隧道通常采用的交叉中壁(CRD)法的工法特点,以V级围岩条件下的某大跨度黄土隧道为研究对象,采用有限元数值模拟手段,对CRD工法中各个分部的开挖形状、开挖顺序以及支护形式进行了优化研究。研究结果表明,将传统CRD法的开挖顺序调整为CRD1-CRD3-CRD2-CRD4时,隧道各步位移及初期支护内力均较原CRD法要小;当采用直线型临时支护代替曲线型临时支护时,隧道初期支护内力会有一定幅度增大,但变化幅度小于10%。优化后的CRD法可以减少工序,加快大跨度黄土隧道的施工进度,提高经济效益。
|
| 关 键 词： | 大跨度 黄土隧道 交叉中壁(CRD)法 优化研究 |
Optimization Study on CRD Method for a Large-Span Loess Tunnel |
| |
| XU Wen-feng,ZHANG Feng,CHEN Jian-ping ,Wuhan ,China.Optimization Study on CRD Method for a Large-Span Loess Tunnel[J].Journal of Disaster Prevent and Mitigation Eng,2009,29(5):572-576. |
| |
| Authors: | XU Wen-feng ZHANG Feng CHEN Jian-ping Wuhan China |
| |
| Institution: | XU Wen-feng1,2,ZHANG Feng2,CHEN Jian-ping2 (1.Third Institute of Oceanography,State Ocean Administration,Xiamen 361005,China,2.China University of Geosciences(Wuhan),Wuhan 430074,China) |
| |
| Abstract: | Based on the characteristics of Cross Diaphragm(CRD) method in tunnel construction,a large-span loess tunnel in Rocks of Grade V was taken to optimize the shape and sequence of its excavation and the support type for CRD method with the FEM numerical simulation.The research reveals the following main results:(1) When the sequence of traditional CRD method is adjusted to CRD1-CRD3-CRD2-CRD4,the tunnel displacement in each phase and the internal force of preliminary supports are less than those with the origi... |
| |
| Keywords: | large-span loess tunnel Cross Diaphragm(CRD) method optimization study |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
