地铁盾构隧道纵缝接头螺栓形式对比试验研究

摘要

管片接头是盾构隧道整环结构中的薄弱环节，隧道管片间多以螺栓连接，并有直螺栓、弯螺栓等几种结构形式。以盾构隧道管片纵缝接头为试验对象，采用足尺试验方法，针对不同螺栓形式的接缝，对盾构隧道纵缝接头的极限承载性能进行研究，明确不同接头的破坏过程，并分析比较不同螺栓形式对接缝受力性能的影响规律。%Segment joint is the most vulnerable section in Shield tunnel,which is connected by straight bolts or bending bolts.A full -scale test is carried out to study the ultimate bearing capacity of the longitudinal joint which is connected by different bolts.The key performance is analyzed and the influence of different bolts on the longitudinal joint is compared.