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木材半刚性销钉式连接转动刚度的数值与试验分析

Numerical and Experimental Analysis of the Rotational Stiffness of a Timber Semi-Rigid Dowel-Type Connection.

作者信息

Johanides Marek, Lokaj Antonin, Dobes Pavel, Mikolasek David

机构信息

Department of Structures, Faculty of Civil Engineering, VSB-Technical University of Ostrava, 708 00 Ostrava, Czech Republic.

Centre for Building Experiments and Diagnostics, Faculty of Civil Engineering, VSB-Technical University of Ostrava, 708 00 Ostrava, Czech Republic.

出版信息

Materials (Basel). 2022 Aug 16;15(16):5622. doi: 10.3390/ma15165622.

DOI:10.3390/ma15165622
PMID:36013756
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9414108/
Abstract

The paper deals with the analysis of the rotational stiffness of a semirigid connection created from a system of two stands and a rung. The connection was made from glued laminated timber with metal mechanical dowel-type fasteners. Not only a common combination of bolts and dowels but also fully threaded screws were used for the connection. The aim of the research and its motivation was to replace commonly used fasteners with more modern ones, to shorten and simplify the assembly time, and to improve the load-carrying capacity of this type of connection. Each of these two types of connection was loaded to the level of 60%, 80%, and 100% of the ultimate limit state value. Subsequently, the rotational stiffness was determined for each load level after five loading and unloading cycles. This paper presents the results and comparison of the experimental testing and the numerical modeling. The obtained results were also compared with the assumption according to the currently valid standard.

摘要

本文探讨了由两个支架和一个横杆组成的半刚性连接的转动刚度分析。该连接由胶合层压木材与金属机械销钉式紧固件制成。连接不仅使用了螺栓和销钉的常见组合，还使用了全螺纹螺钉。该研究的目的及其动机是用更现代的紧固件取代常用的紧固件，缩短和简化组装时间，并提高这种连接类型的承载能力。这两种连接类型中的每一种都加载到极限状态值的60%、80%和100%的水平。随后，在五个加载和卸载循环后，确定每个载荷水平下的转动刚度。本文介绍了实验测试和数值模拟的结果及比较。还将获得的结果与现行有效标准的假设进行了比较。

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Rotational Stiffness and Carrying Capacity of Timber Frame Corners with Dowel Type Connections.
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