Strain evolution of L-shaped precast columns spliced by laminated metal plates, part I
| Autor: | Dinh Han Nguyen, Won-Kee Hong, Jisoon Kim |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of Asian Architecture and Building Engineering, Vol 21, Iss 2, Pp 469-489 (2022) |
| Druh dokumentu: | article |
| ISSN: | 1347-2852 13467581 |
| DOI: | 10.1080/13467581.2020.1869017 |
| Popis: | Mechanical joints for both irregular steel-concrete composite precast frames and reinforced concrete precast frames were developed to replace conventional cast-in-place concretes in the previous study of the authors. Novel connections modified from conventional steel joints having fully restrained moment connections offer rapid and facile erections. This study aims to numerically identify microscopic strain evolution and failure modes of the laminated metal plates splicing L-shaped precast composite columns. Numerical parameters including material properties of structural components of mechanical joint were implemented to determine damages and strength degradations with associated fractures. Comprehensive numerical results agreed well with test data, which explored structural behavior and contribution of each structural element of mechanical joint to flexural capacity. Strain evolution showed that degradation of the mechanical joints was retarded by interior bolts to a level similar to monolithic columns, resulting in contribution of mechanical joint to flexural capacity of columns. Influence of axial loads on the behavior of columns with mechanical joints was also evaluated to provide design recommendations. |
| Databáze: | Directory of Open Access Journals |
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