摘要
上海国际航运中心洋山深水港区小洋山隧道工程为国内第一座小净距大跨度群洞隧道,对其进行施工方案优化分析有重大理论与实际意义。作者选择了三种不同施工顺序工况进行有限元数值模拟分析,对比各工况屈服度云图、最危险阶段受影响最大的隧道衬砌上的弯矩和竖直位移的增量值,以此为准则,得出最合理的施工顺序,并在这基础上计算了隧道不同间距对群洞隧道的影响。从施工顺序和合理间距两方面进行数值分析,从而使得实际隧道施工方案得到优化。
The small Yangsan Tunnel of Shanghai international shipping center Yangsan deep-water port area is the first small clear distanee and large span group tunnels in our country. The optimization analysis of construction schemes for this tunnel has important theoretical and practical meaning. The authors have selected three operating models for finite element simulation analysis. By comparing the yielding degree around the tunnels, the moment and the vertical displacement of lining in the most dangerous tunnel, the optimal construction scheme can be obtained. This paper also studies the influence of different distance to group tunnels. Based on analysis on the two aspects as construction sequence and proper distance , the practical construction scheme is optimized.
出处
《地下空间与工程学报》
CSCD
2007年第1期96-100,共5页
Chinese Journal of Underground Space and Engineering
关键词
群洞
衬砌
施工顺序
屈服度
合理间距
group tunnels
lining
construction sequence
yielding degree
proper distance
