The structural safety of jointed rigid pipes can be jeopardized under abrupt ground settlements. Most previous studies have investigated the response and safety of jointed rigid pipes under abrupt ground subsidence using numerical and experimental methods at two specific positions, i.e., the shear band caused by the ground movements crosses the pipe at a joint and at the midspan of a pipe segment. In this work, a closed-form analytical solution for the deformation and mechanical response of jointed rigid pipes under abrupt ground subsidence with various crossing positions is presented. The pipe bending moment and the joint shear force are calculated, which match quite well with the results of finite element analysis. Then the maximum allowable settlements are examined, and the corresponding failure modes are identified. It shows that with the increase of burial depth and soil density, the main failure mode gradually changes from the excessive joint deflection to the barrel bending and bell cracking, and the maximum allowable subsidence distance decreases remarkably. The worst crossing position is at nearly 7/10 of the pipe length. The results offer new insights into the failure mechanism of jointed rigid pipe, and provide a basis for the protection of rigid pipes under abrupt ground subsidence.

地面突然沉降可能会危及连接刚性管道的结构安全。以往的大多数研究都是通过数值和实验方法在两个特定位置（即地面运动引起的剪切带在接头处和管道中跨处穿过管道）研究了地面突然沉降下有节刚性管道的响应和安全性。部分。在这项工作中，提出了一种封闭式解析解，用于解决地面突然沉降下具有不同交叉位置的连接刚性管的变形和机械响应。计算了管道弯矩和接头剪力，与有限元分析结果吻合较好。然后检查最大允许沉降，并识别相应的破坏模式。结果表明，随着埋深和土体密度的增加，主要破坏模式由节缝过大挠度逐渐转变为桶形弯曲和钟形开裂，最大允许沉降距离显着减小。最差的交叉位置接近管道长度的 7/10。研究结果为对接刚性管的失效机理提供了新的见解，并为地面突然沉降下刚性管的防护提供了依据。