High-Performance Steel Bars and Fibers as Concrete Reinforcement for Seismic-Resistant Frames
| Autor: | Jeffrey M. Rautenberg, Hooman Tavallali, Santiago Pujol, Andrés Lepage |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Article Subject business.industry Structural engineering Transverse reinforcement Compressive strength Flexural strength lcsh:TA1-2040 Volume fraction Axial load Deformation (engineering) Composite material lcsh:Engineering (General). Civil engineering (General) Reinforcement business Displacement (fluid) Civil and Structural Engineering |
| Zdroj: | Advances in Civil Engineering, Vol 2012 (2012) |
| ISSN: | 1687-8094 1687-8086 |
| Popis: | Experimental data are presented for six concrete specimens subjected to displacement reversals. Two specimens were reinforced longitudinally with steel bars Grade 410 (60 ksi), two with Grade 670 (97 ksi), and two with Grade 830 (120 ksi). Other experimental variables included axial load (0 or 0.2fc′ Ag) and volume fraction of hooked steel fibers (0 or 1.5%). All transverse reinforcement was Grade 410, and the nominal concrete compressive strength was 41 MPa (6 ksi). The loading protocol consisted of repeated cycles of increasing lateral displacement reversals (up to 5% drift) followed by a monotonic lateral push to failure. The test data indicate that replacing conventional Grade-410 longitudinal reinforcement with reduced amounts of Grade-670 or Grade-830 steel bars did not cause a decrease in usable deformation capacity nor a decrease in flexural strength. The evidence presented shows that the use of advanced high-strength steel as longitudinal reinforcement in frame members is a viable option for earthquake-resistant construction. |
| Databáze: | OpenAIRE |
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