Abstract When designing modular buildings, the structural behaviour of the inter-module connections (IMCs) must be simplified so they can be incorporated in the structural model. However, the existing models for the shear, axial and moment-rotation behaviour are limited, and further study is required to develop improved models. In this study, the shear, axial and moment-rotation behaviours of a post-tensioned IMC are investigated. A numerical model is developed and calibrated based on the shear behaviour obtained from experiments. Following the experiments, a simplified empirical model is proposed for the shear behaviour. The numerical model is then extended to determine the axial and moment-rotation behaviour. Simplified analytical models are derived and compared with the numerical results. Further, the numerical results are compared with the behaviour of other existing IMCs, for which experimental data are available in the literature. In this way, simplified models which can predict the shear, axial and moment-rotation behaviour of the post-tensioned IMC are developed. The developed simplified models can be used to predict the behaviour of modular structures with the newly proposed post-tensioned IMC.

中文翻译：

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模块化建筑后张式模块间连接的简化结构行为

摘要 在设计模块化建筑时，必须简化模块间连接 (IMC) 的结构行为，以便将它们合并到结构模型中。然而，现有的剪切、轴向和力矩-旋转行为模型是有限的，需要进一步研究以开发改进的模型。在这项研究中，研究了后张 IMC 的剪切、轴向和力矩-旋转行为。基于从实验获得的剪切行为开发和校准数值模型。在实验之后，针对剪切行为提出了一个简化的经验模型。然后扩展数值模型以确定轴向和力矩-旋转行为。推导出简化的分析模型并与数值结果进行比较。更多，数值结果与其他现有 IMC 的行为进行了比较，其实验数据可在文献中获得。通过这种方式，开发了可以预测后张 IMC 的剪切、轴向和力矩-旋转行为的简化模型。开发的简化模型可用于预测具有新提出的后张 IMC 的模块化结构的行为。