Finite Element Analysis on Flexural Behavior of Steel-Cross Laminated Timber Composite Beams Connected with Studs Embedded in Grout Pockets

Rong-fan LI; Zhi-bin LING; Quan-meng MU; He-nan ZHANG

doi:10.12326/j.2096-9694.2022006

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Finite Element Analysis on Flexural Behavior of Steel-Cross Laminated Timber Composite Beams Connected with Studs Embedded in Grout Pockets
1.School of Civil Engineering，Suzhou University of Science and Technology，Suzhou 215009，Jiangsu，China
Vol. 36, Issue 3, Pages: 80-89(2022)
DOI： 10.12326/j.2096-9694.2022006

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李荣帆,凌志彬,穆泉蒙等.浆锚栓钉连接钢-正交胶合木组合梁抗弯性能有限元分析[J].木材科学与技术,2022,36(03):80-89.

LI Rong-fan,LING Zhi-bin,MU Quan-meng,et al.Finite Element Analysis on Flexural Behavior of Steel-Cross Laminated Timber Composite Beams Connected with Studs Embedded in Grout Pockets[J].Chinese Journal of Wood Science and Technology,2022,36(03):80-89.
李荣帆,凌志彬,穆泉蒙等.浆锚栓钉连接钢-正交胶合木组合梁抗弯性能有限元分析[J].木材科学与技术,2022,36(03):80-89. DOI： 10.12326/j.2096-9694.2022006.

LI Rong-fan,LING Zhi-bin,MU Quan-meng,et al.Finite Element Analysis on Flexural Behavior of Steel-Cross Laminated Timber Composite Beams Connected with Studs Embedded in Grout Pockets[J].Chinese Journal of Wood Science and Technology,2022,36(03):80-89. DOI： 10.12326/j.2096-9694.2022006.

摘要

设计一种浆锚栓钉连接的钢-正交胶合木（CLT）组合梁，基于ABAQUS研究栓钉直径、槽口间距及栓钉排布等参数对钢-CLT组合梁的抗弯性能及抗滑移性能的影响，结合组合结构基本理论对组合梁的抗弯承载力及抗弯刚度进行理论预测。结果表明，模拟得到的荷载-跨中挠度关系曲线表现出明显的屈服拐点，呈“二折线”特征，且曲线弹性段与完全组合界线接近，表明浆锚栓钉连接钢-CLT组合梁具有很好的延性行为和较高的组合效率。浆锚栓钉连接钢-CLT组合梁的组合效率平均能达0.80~0.97，且栓钉直径与槽口间距是影响浆锚栓钉连接钢-CLT组合梁整体性能的重要参数。

Abstract

A steel-Cross Laminated Timber (CLT) composite beam connected with studs embedded in grout pockets was designed. The effects of the stud diameter, pocket spacing, and stud arrangement on the flexural performance and anti-slip performance of the steel-CLT composite beams were investigated based on ABAQUS. The theoretical prediction of the flexural load capacity and flexural stiffness of the composite beams was conducted by combining with the basic theory of the composite structure. The results showed that the numerically obtained load-mid-span deflection curves were characterized by two-well defined linear parts with an distinct yield point. The simulated load-mid-span deflection curves were close to the boundary line for the full composite action in the initial stage indicating a high composite efficiency for the composite beams with studs embedded in grout pockets connection. The coefficient of the composite efficiency of studs embedded in grout pockets connected steel-CLT composite beams was between 0.80 and 0.97 on average. The stud diameter and pocket spacing are important parameters which affect the overall performance of the steel-CLT composite beam connected by studs embedded in grout pockets.

关键词

钢-CLT组合梁栓钉连接抗弯性能抗滑移性能

Keywords

steel-CLT composite beamstud connectionflexural behavioranti-slip performance

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