Scotta Roberto, Marchi Luca, Trutalli Davide, Pozza Luca
Department of Civil, Environmental and Architectural Engineering, University of Padova, Via Marzolo 9, Padova 35131, Italy.
Materials (Basel). 2016 Feb 26;9(3):139. doi: 10.3390/ma9030139.
This paper deals with the conception and characterization of an innovative connection for cross-laminated timber (CLT) panels. The connection is designed to provide an adequate level of dissipative capacity to CLT structures also when realized with large horizontal panels and therefore prone to fragile shear sliding failure. The connector, named X-bracket, has been theorized and designed by means of numerical parametric analyses. Furthermore, its cyclic behavior has been verified with experimental tests and compared to that of traditional connectors. Numerical simulations of cyclic tests of different CLT walls anchored to the foundation with X-brackets were also performed to assess their improved seismic performances. Finally, the analysis of the response of a 6 m × 3 m squat wall demonstrates that the developed connection provides good ductility and dissipation capacities also to shear walls realized with a single CLT panel.
本文探讨了一种用于交叉层压木材（CLT）板的创新连接的概念和特性。该连接设计用于在CLT结构采用大型水平面板实现时，也能提供足够的耗能能力，从而易于发生脆性剪切滑动破坏。名为X形支架的连接器已通过数值参数分析进行了理论推导和设计。此外，其循环性能已通过实验测试得到验证，并与传统连接器的循环性能进行了比较。还对使用X形支架锚固到基础的不同CLT墙的循环试验进行了数值模拟，以评估其改进的抗震性能。最后，对一个6米×3米的矮墙的响应分析表明，所开发的连接也能为用单个CLT面板实现的剪力墙提供良好的延性和耗能能力。
