Withdrawal resistance of the self-tapping screws in engineered bamboo scrimber
Withdrawal resistance of the self-tapping screws in engineered bamboo scrimber
复制标题
工程重组竹自攻螺钉的拔出阻力
DOI：
10.1016/j.conbuildmat.2021.125315
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发表时间：
2021-12
影响因子：
7.4
通讯作者：
Lu Yong
中科院分区：
文献类型：
--
作者：
Li Hongmin;Qiu Hongxing;Wang Zhiqiang;Lu Yong
自攻螺钉连接的重组竹的力学性能受到自攻螺钉拔出阻力的强烈影响。然而，现有的知识在这种应用中的STS的抗拔出性是相当有限的。本研究的主要目的是通过实验研究插入到工程竹重组材中的STS的拔出阻力，并提出一种在结构应用中的计算方法。在试验研究中，进行了拔出试验，得到了STS-拔出试件的荷载-位移曲线。研究的关键参数包括嵌入长度、螺杆直径和螺杆相对于晶粒方向的角度。试验结果表明，自攻螺钉连接的拔出阻力随自攻螺钉直径、纤维与自攻螺钉轴线夹角的增大而增大。
The mechanical behaviour of the engineered bamboo scrimber connected by self-tapping screws (STSs) is strongly affected by the withdrawal resistance of the STSs in the bamboo scrimber. However, existing knowledge on the withdrawal resistance of STSs in such applications is quite limited. The main objective of this study is to investigate experimentally the withdrawal resistance of STSs inserted in engineered bamboo scrimber and propose an approach to its calculation in structural applications. In the experimental study, pull-out tests were conducted to obtain the load-displacement curves of STS-withdrawal specimens. The key parameters being investigated included the embedment length, the screw diameter, and the screw angle relative to the grain direction. The test results showed that the withdrawal resistance of the STSs connection increased with the increase of the embedment length, the diameter of the self-tapping screw, as well as the increase of the angle between the fiber and the axis of the.
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