%0 Journal Article
%T STUDY OF THE LOADING PATTERN ON CIRCULAR TUNNEL IN SOFT GROUND<br>软土地层中的圆形隧道载荷模式研究
%A Jiang Hongsheng
%A Hou Xueyuan
%A <br>蒋洪胜
%A 侯学渊
%J 岩石力学与工程学报
%D 2003
%I 
%X Abstrct The influencing factors of the loading on the circular tunnel in soft ground, such as tunnel embedment depth from the ground surface, construction techniques, and theoretical calculating approaches, are studied. The analysis of site-measured earth pressure on three tunnels in Shanghai soft ground shows that the earth pressure and magnitude distributions are not only varied with the method of tunnel construction (EPB shield or extruding shield method), but also dependent on constructing and servicing phases. In constructing phase, for extruding shield method, the deformed tunnel lining is like a duck egg standing on end, while for EPB shield, it is like a lying duck egg. According to the Rankin dynamic and static earth pressure theory, the calculated earth pressure magnitudes are less than those measured in site, and the gap between them is fairly big. Based on the presented coefficients of lateral earth pressure and the assumption of cosine function of the earth pressure on circular tunnel in this paper, the calculated magnitudes have good agreement with the site-measured values for the studied three tunnels in Shanghai soft ground.
%K tunneling engineering
%K shield tunnel
%K earth pressure
%K loading pattern
%K soft ground
%K EPB shield
%K extruding shield<br>隧道工程
%K 盾构法隧道
%K 土压力
%K 载荷模式
%K 软土地层
%K EPB盾构
%K 挤压盾构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=876D45A9B941B365&yid=D43C4A19B2EE3C0A&vid=BC12EA701C895178&iid=E158A972A605785F&sid=7004BE6E41AAF52C&eid=4E8E6A5CE04FD382&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=9&reference_num=3