Pull-Out and Shear Tests of Long Glass FRP Connector for Sandwich-Insulation Wall Panels
Publication: Journal of Composites for Construction
Volume 25, Issue 5
Abstract
Sandwich insulation wall panels (SIWPs) are used extensively as thermal resistance components in buildings. Connectors in SIWPs are subjected to axial and shear forces to resist the load of the outer layer and transfer it to the inner layer and structure. In some areas, the insulation thickness needs to increase to achieve a satisfactory heat preservation effect, which leads to an increase in connector length. Most existing connectors do not satisfy the mechanical requirements for a thick insulation layer, e.g., 300 mm. In this work, a series of pull-out and shear tests were conducted for a novel long glass fiber-reinforced polymer I-shaped connector. The ply design and anchorage design of the connectors are key factors that affect the connector’s mechanical properties. Through comparative tests, the influence of these two factors on the axial and shear stiffness, capacity, and failure mode were explored. The addition of ±45° and 0°/90° multiaxial fiber cloth had little effect on axial performance, but the vertical shear stiffness and horizontal shear capacity improved. The pull-out and vertical shear capacity can be improved by optimizing the anchorage design and adding a row of anchorage rebar in the flange.
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Acknowledgments
Financial support from the National Key R&D Program of China (Grant No. 2019YFC1509303), the Natural Science Foundation of China (Grant No. 52078275), and the Institute for Guo Qiang, Tsinghua University (Grant No. 2019GQC0001) is gratefully acknowledged.
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Published In
Journal of Composites for Construction
Volume 25 • Issue 5 • October 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Dec 21, 2020
Accepted: Jul 13, 2021
Published online: Aug 11, 2021
Published in print: Oct 1, 2021
Discussion open until: Jan 11, 2022
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Cited by
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