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加载端距离和含水率对方形及圆形木材中平行于木纹方向受拉螺栓连接性能的影响。

Effects of Loaded End Distance and Moisture Content on the Behavior of Bolted Connections in Squared and Round Timber Subjected to Tension Parallel to the Grain.

作者信息

Lokaj Antonin, Dobes Pavel, Sucharda Oldrich

机构信息

Department of Structures, Faculty of Civil Engineering, VSB-Technical University of Ostrava, 70800 Ostrava-Poruba, Czech Republic.

Department of Building Materials and Diagnostics of Structures, Faculty of Civil Engineering, VSB-Technical University of Ostrava, 70800 Ostrava-Poruba, Czech Republic.

出版信息

Materials (Basel). 2020 Dec 3;13(23):5525. doi: 10.3390/ma13235525.

DOI:10.3390/ma13235525
PMID:33287370
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7731337/
Abstract

This article presents the results of static tests on bolted connections in squared and round timber with inserted steel plates. The experiment evaluates structural timber connections with different distances between the fastener and the loaded end at different moisture contents. Specimens were loaded by tension parallel to the grain and load-deformation diagrams were recorded. Fifty-six specimens with three different distances between the fastener and the loaded end, at different moisture contents, were tested. The results were statistically evaluated using regression analysis, complemented with load-deformation curves, and compared with calculations according to the valid standard for design of timber structures. A decrease in the evaluated load-carrying capacity with increasing moisture content was confirmed experimentally. A slight increase in the evaluated load-carrying capacity with increasing fastener distance from the loaded end was found.

摘要

本文介绍了对带有插入钢板的方形和圆形木材螺栓连接进行的静态测试结果。该实验评估了在不同含水量情况下，紧固件与受载端之间不同距离的结构木材连接。试件沿木纹方向受拉加载，并记录荷载-变形图。测试了56个试件，这些试件在不同含水量情况下，紧固件与受载端之间有三种不同距离。使用回归分析对结果进行统计评估，并辅以荷载-变形曲线，还与木结构设计现行标准的计算结果进行了比较。实验证实，随着含水量增加，评估的承载能力会降低。还发现，随着紧固件与受载端距离的增加，评估的承载能力略有增加。

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