%0 Journal Article
%T STUDY ON LOCAL CRACKING OF SEGMENTS IN SHIELD TUNNEL DURING CONSTRUCTION<br>盾构隧道施工阶段管片局部开裂原因初探
%A CHEN Junsheng
%A MO Haihong
%A LIANG Zhongyuan
%A <br>陈俊生
%A 莫海鸿
%A 梁仲元
%J 岩石力学与工程学报
%D 2006
%I 
%X Reinforced concrete segments are the basic structure units in shield tunnel. The cracking and breakage on segments will cause quality defect, and finally influence the durability of shield tunnel. During construction, crack appears on some segments near the bolt holes. In order to find out the reasons, first, full-scale positive and negative bending tests are applied to three pairs of standard segments. The tests indicate that the bending displacement do not cause these cracks. Afterwards, the finite element method is used to calculate the segments stress distribution under relative bending and torsional moments between two standard segments. The contours and cross-section stress curves of analytical results indicate that the relative torsion between segments causes the cracks during shield tunnel construction.
%K tunneling engineering
%K cracking and breakage
%K full-scale segments test
%K finite element analysis<br>隧道工程
%K 开裂与破损
%K 足尺管片试验
%K 有限元分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=1DD604ED8C90C938&yid=37904DC365DD7266&vid=C5154311167311FE&iid=94C357A881DFC066&sid=0FCE62EC9DC00F5E&eid=A02B0E6E62BE4F0C&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=8&reference_num=10