随着我国建筑市场体量的进一步扩展,传统建造方式面临转型挑战,要求从业者交叉融合信息化技术解决建造中的问题.将数字孪生技术引入装配式建筑安装过程中,提出装配式建筑构件安装数字孪生模型,从物理实体建模、数字孪生虚体建模、虚实交互通道建模角度,提出基于数字孪生的装配式施工过程多维度建模理论,并阐明基于数字孪生的装配式建筑构件安装智能管理模型的合理性与可行性.

现存的传统村落木结构民居,由于受风雨侵蚀及战乱、地震、火灾的破坏,发生不同程度的损伤和破坏,榫卯节点残损情况直接影响整个民居房屋结构的安全.以北方地区传统村落"四梁八柱"木结构民居榫卯节点(馒头榫)为研究对象,考虑不同残损类型及程度,制作5个足尺梁柱节点模型,通过拟静力低周往复加载试验研究其破坏模式、弯矩-转角滞回响应及骨架曲线、加载刚度、变形、强度及耗能能力等力学性能.试验结果表明:馒头榫节点破坏模式表现为榫头拔出、榫与卯口挤压变形;相比于完好节点,残损馒头榫节点抗弯承载力、加载刚度和耗能能力明显降低,且"捏拢"效应加剧;榫头松动是导致节点力学性能降低的直接原因;垂直加载方向虫蛀节点力学性能劣化程度强于平行加载方向虫蛀节点,更易导致耗能能力降低.

In this study, an innovative hollow-core cross-laminated timber (HC-CLT) system was examined in terms of its human-induced vibration performance. Three types of HC-CLT floors were selected as the research objects, namely 3-ply HC-CLT, 5-ply HC-CLT with hollow cores along the transverse direction, and 5-ply HC-CLT with hollow cores along the longitudinal direction. By theoretical analysis, it was found that the hollow cores had a slight impact on the static bending stiffness, and HC-CLT floors had a good potential for structural applications. The HC-CLT floors were then modelled using OpenSees software to assess its dynamic performance, and experimental testing results have validated the modelling method. The HC-CLT floors were excited by single-person, two-person, and five-person slow walking, fast walking, and running. Based on the recorded acceleration at the centroid of the floor, it was realised that the vibration dose values (VDV) of the 5-ply HC-CLT floor with hollow cores along the transverse direction were not larger than those of the solid CLT floor under walking excitations. It indicated that the hollow cores were more effective to distribute along the transverse direction to assure the comfort level. However, the vibration response of the HC-CLT floor under running excitations was larger. By enhancing the beam supporting condition from the two-side to the four-side support, the vibration response of the HC-CLT floor can be effectively reduced.