摘要
上海复兴东路越江隧道为国内首条双层隧道,其联络通道采用水平冻结信息化施工。对施工全过程的监测结果表明,冻结管布置形式、管片散热是影响冻土帷幕形成的重要因素。通道段单排管布置、喇叭口双排管加强的布置方式使冻土帷幕形成三个性状不同的区域,隧道管片散热显著影响了喇叭口部位冻土帷幕的特征。通过冻土帷幕的厚度和平均温度描述了三个区域的性状,并通过定义隧道管片散热影响系数,分析了隧道管片散热对冻土帷幕厚度的影响程度以及影响范围。所得到的结论为将来施工类似工程提供有益借鉴。
The Cross-river Tunnel of the East Fuxing Road in Shanghai is the first double-deck tunnel in China. Horizontal Freezing Method was used to construct the cross-passages monitored with a system of information construction. Analyzing the monitored data in details, it is shown that the layout of freezing pipes and the heat radiation of tunnel lining are two important factors affecting the frozen soil＇s shape. The frozen soil＇s shape can be divided into three zones according to the layout of freezing pipes and the heat radiation of tunnel lining. Through defining the radiating coefficient of the tunnel lining, the influencing degree and dimen- sion affecting the frozen soil behind the tunnel lining due to the heat radiation are discussed. The significant conclusions obtained in this paper provide a good reference in guiding future design and construction in similar conditions.
出处
《地下空间与工程学报》
CSCD
北大核心
2009年第1期7-12,共6页
Chinese Journal of Underground Space and Engineering
基金
国家自然科学基金资助项目(50578120)
关键词
双层越江隧道
联络通道
冻结法
温度场
double-deck tunnel
cross-passage
ground freezing method
temperature field
