%0 Journal Article
%T 用于装配式车站的十字形榫槽接头承载性能研究<br>Study on the Load-Bearing Performance of Cross-Shaped Tongue-and-Groove Joints for Assembled Stations
%A 项炳泉
%A 秦旺
%A 崔林钊
%A 唐文栋
%J Hans Journal of Civil Engineering
%P 231-237
%@ 2326-3466
%D 2024
%I Hans Publishing
%R 10.12677/HJCE.2024.133026
%X 装配式地铁车站整体结构由各个预制部件通过榫槽接头拼装而成，但现有的梯形截面榫槽结构在受弯过程中接触面易产生滑动分离，削弱接头部位的承载能力，从而进一步影响车站整体结构的安全性能。为了加强榫槽接头的力学承载性能，在原有梯形榫槽的基础上增加一道垂直于主榫的次榫，形成一种新型的十字形榫槽接头。对两种榫槽接头开展有限元数值模拟，结果表明：较于梯形榫槽，十字形榫槽次榫能够有效抵抗接触面的滑脱作用，保护接头模型的上部混凝土不受拉破坏；十字形榫槽抵抗弯曲变形和接头张开作用的能力优于梯形榫槽，呈现出更稳定的承载形变和更强的抗弯承载极限。以上结果证明了十字形榫槽在改善接头破坏、提升接头承载能力和保持结构稳定性上表现优良，可以提升结构性能，延长结构使用寿命，为装配式地铁车站榫槽接头的优化改良设计提供了参考。<br />
The overall structure of the assembled metro station consists of various prefabricated parts assembled through tongue-and-groove joints, but the existing trapezoidal section tongue-and-groove structure is prone to sliding separation of the contact surfaces during bending, weakening the load-bearing capacity of the joints, which further affects the safety performance of the overall structure of the station. In order to strengthen the mechanical bearing performance of the tongue-and- groove joints, a secondary mortise perpendicular to the main mortise is added on the basis of the original trapezoidal mortise and groove to form a new type of cross-shaped mortise and groove joint. The finite element numerical simulation of the two types of tongue-and-groove joints shows that, compared with the trapezoidal tongue-and-groove, the secondary mortise of the cruciform tongue-and-groove is able to effectively resist the sliding effect of the contact surface, and protects the upper concrete of the joint model from tensile damage. The ability of cross-shaped mortise and groove to resist bending deformation and joint opening is better than that of trapezoidal mortise and groove, which shows more stable load-bearing deformation and stronger bending load limit. The above results demonstrate that the cross-shaped tongue-and-groove has an excellent performance in improving joint damage, enhancing the joint bearing capacity and maintaining structural stability, which can improve the structural performance and prolong the service life of the structure, and provide a reference for the optimization of the design of tongue-and-groove joints in assembled metro stations.
%K 装配式车站节点，榫槽接头，有限元模拟，抗弯承载<br>Assembled Station Joint
%K Tongue-and-Groove Joints
%K Finite Element Simulation
%K Flexural Load Bearing
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=82893