Exterior RC wide beam-column connections: Effect of beam width ratio on seismic behaviour
| Autor: | Jun Shang Kuang, Roy Y. C. Huang, Hamdolah Behnam |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
021110 strategic
defence & security studies Beam diameter Materials science business.industry 0211 other engineering and technologies Hinge 020101 civil engineering 02 engineering and technology Structural engineering 0201 civil engineering Seismic analysis Core (optical fiber) Column (typography) Shear stress Composite material business Joint (geology) Beam (structure) Civil and Structural Engineering |
| Zdroj: | Engineering Structures. 147:27-44 |
| ISSN: | 0141-0296 |
| DOI: | 10.1016/j.engstruct.2017.05.044 |
| Popis: | Design recommendations stipulated in international standards for seismic design of reinforced concrete (RC) wide beam-column connections are based on limited experimental studies. To supplement the existing information, an experimental study was conducted that focused on the effect of beam width to column width ratio (or beam width ratio) on the seismic behaviour of exterior beam-column connections. Four specimens were designed, constructed and tested under reversed cyclic loading conditions. The primary test variables were the beam width ratio and the joint shear stress ratio ( γ d ). The specimens were designed in conformance with ACI 318-14 and ACI 352R-02. They had beam width ratios of 1, 1.5, 2 and 2.5 and γ d , of 0.74, 1.12, 1.63, and 2.03. According to ACI 352R-02, the γ d value should be lower than γ n = 1.25 for joints confined on three faces. The results indicated that specimens with beam width ratios of 1 and 1.5 and γ d of 0.74 and 1.12 were capable of supporting the complete formation of beam plastic hinges with no major cracks in the joint region. In contrast, specimens with beam width ratios of 2 and 2.5 and γ d of 1.63 and 2.03 exhibited significant damage at the joint core. Torsional failure of the spandrel beam was also observed in specimen with beam width ratio of 2.5. |
| Databáze: | OpenAIRE |
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