Lee Seungjae, Park Jaeseong, Kwak Euishin, Shon Sudeok, Kang Changhoon, Choi Hosoon
Interdisciplinary Program in Creative Engineering, Korea University of Technology and Education, Cheonan 31253, Korea.
Department of Architectural Engineering, Korea University of Technology and Education, Cheonan 31253, Korea.
Materials (Basel). 2017 Mar 6;10(3):263. doi: 10.3390/ma10030263.
Modular systems have been mostly researched in relatively low-rise structures but, lately, their applications to mid- to high-rise structures began to be reviewed, and research interest in new modularization subjects has increased. The application of modular systems to mid- to high-rise structures requires the structural stability of the frame and connections that consist of units, and the evaluation of the stiffness of structures that are combined in units. However, the combination of general units causes loss of the cross-section of columns or beams, resulting in low seismic performance and hindering installation works in the field. In addition, the evaluation of a frame considering such a cross-sectional loss is not easy. Therefore, it is necessary to develop a joint that is stable and easy to install. In the study, a rigidly connected modular system was proposed as a moment-resisting frame for a unit modular system, and their joints were developed and their performances were compared. The proposed system changed the ceiling beam into a bracket type to fasten bolts. It can be merged with other seismic force-resisting systems. To verify the seismic performance of the proposed system, a cyclic loading test was conducted, and the rigidly connected joint performance and integrated behavior at the joint of modular units were investigated. From the experimental results, the maximum resisting force of the proposed connection exceeded the theoretical parameters, indicating that a rigid joint structural performance could be secured.
模块化体系大多在相对低层的建筑结构中得到研究，但近来，其在中高层建筑结构中的应用开始受到审视，并且对新模块化课题的研究兴趣有所增加。将模块化体系应用于中高层建筑结构需要由单元组成的框架和连接具有结构稳定性，以及对以单元组合而成的结构刚度进行评估。然而，普通单元的组合会导致柱或梁的截面损失，从而降低抗震性能并妨碍现场安装工作。此外，考虑这种截面损失的框架评估并不容易。因此，有必要开发一种既稳定又易于安装的节点。在该研究中，提出了一种刚性连接的模块化体系作为单元模块化体系的抗弯框架，并开发了其节点并比较了它们的性能。所提出的体系将天花板梁改为托架类型以固定螺栓。它可以与其他抗震体系合并。为了验证所提出体系的抗震性能，进行了循环加载试验，并研究了刚性连接节点性能以及模块化单元节点处的整体性能。从试验结果来看，所提出连接的最大抗力超过了理论参数，表明可以确保刚性节点的结构性能。
