中文摘要：

输水盾构隧道的管片受到高内水压的作用,接头的变形问题非常突出,这直接决定了接头的防水构造形式。目前大多数管片环向接头的变形都是根据经验,并参考类似工程选取,这必然带来很大的随机性。而由于时间和成本问题,所有隧道工程都做足尺试验不现实。克服以往接头力学与变形模型的不足,考虑弹性密封衬垫的受力、接头混凝土的弹塑性变化以及螺栓预紧力,建立了接头力学计算模型;考虑了受压区混凝土的压缩变形,螺栓变形和手孔铸铁件的局部变形,建立了一个新的接头变形计算模型。同时进行了隧道管片1∶1接头试验,将试验得到的螺栓拉力和接头变形值与理论计算值进行比较。结果表明：本模型能比较真实地反映接头的受力和变形情况。

英文摘要：

In the water-conveyance shield tunnel,the joint deformation is an important factor which determines the waterproofing form.Since there is no general formula to calculate the deformation of radial joints,a full scale test is a practical approach.But it is too expensive to carry out a full scale test for every project compared with the existing common methods for the determination of deformation which introduces much casualness to engineering projects.By considering the force of gasket,the elastic-plastic behaviors of concrete and the prestressed tension force of bolts,a joint structural model is established.By considering the deformation of concrete,the deformation of bolts and the deformation of splice plate,a deformation model is established and the deformations are calculated.At the same time,a full-scale radial joint test is carried out.The results of the analysis show that the tension force in bolts and deformations calculated by the two models are close to the test values.