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Smart Structures and Systems Volume 24, Number 6, December 2019 , pages 783-791 DOI: https://doi.org/10.12989/sss.2019.24.6.783 |
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Test on the anchoring components of steel shear keys in precast shear walls |
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Shao-Dong Shen, Peng Pan, Wen-Feng Li, Qi-Song Miao and Run-Hua Gong
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| Abstract | ||
| Prefabricated reinforced-concrete shear walls are used extensively in building structures because they are convenient to construct and environmentally sustainable. To make large walls easier to transport, they are divided into smaller segments and then assembled at the construction site using a variety of connection methods. The present paper proposes a precast shear wall assembled using steel shear keys, wherein the shear keys are fixed on the embedded steel plates of adjacent wall segments by combined plug and fillet welding. The anchoring strength of shear keys is known to affect the mechanical properties of the wall segments. Loading tests were therefore performed to observe the behavior of precast shear wall specimens with different anchoring components for shear keys. The specimen with insufficient strength of anchoring components was found to have reduced stiffness and lateral resistance. Conversely, an extremely high anchoring strength led to a short-column effect at the base of the wall segments and low deformation ability. Finally, for practical engineering purposes, a design approach involving the safety coefficient of anchoring components for steel shear keys is suggested. | ||
| Key Words | ||
| prefabricated shear wall; quasi-static test; embedded components; anchoring strength | ||
| Address | ||
| Shao-Dong Shen and Run-Hua Gong: Department of Civil Engineering, Tsinghua University, Beijing 100084, China Peng Pan: Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Tsinghua University, Beijing 100084, China Wen-Feng Li and Qi-Song Miao: Complex Structural Design Division, Beijing Institute of Architectural Design, Beijing 100045, China | ||