Performance of mechanical steel bar splices using grouted couplers under uniaxial tension
| Autor: | Meisam Gordan, Hashim Abdul Razak, Haider Hamad Ghayeb, Fuad Abutaha, N.H. Ramli Sulong, Kim Hung Mo |
|---|---|
| Přispěvatelé: | Abutaha, Fuad, 301450 [Abutaha, Fuad], 57160193100 [Abutaha, Fuad] |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Mechanical splice
Materials science Bar (music) media_common.quotation_subject 0211 other engineering and technologies Grouted couplers Fracture failure Mekanik ekleme 02 engineering and technology engineering.material Steel bar Bond-slip failure Precast connector Prekast bağlayıcı 021105 building & construction Architecture Ultimate tensile strength 021108 energy Kırık hatası Composite material Eccentricity (behavior) Safety Risk Reliability and Quality Ductility Civil and Structural Engineering media_common Derzli kaplinler Tek eksenli çekme testi Grout Seismic loading High Energy Physics::Phenomenology Building and Construction Bağ kayma hatası Uniaxial tensile test Lapping Mechanics of Materials engineering Physics::Accelerator Physics High Energy Physics::Experiment |
| DOI: | 10.1016/j.jobe.2020.101892 |
| Popis: | In this study, grouted couplers were used to connect steel bars as an alternative approach to the conventional steel bar lapping method. The aim is to avoid bar congestion problems and to reduce the required quantity of steel bars in order to achieve the development length in practice. Two categories of couplers, i.e., short-threaded grout coupler and long grout coupler, in nine groups as well as one group of deformed bars, were tested under uniaxial tension. In total, 30 samples (including three repeated samples in each group) were tested. The examined parameters were types of couplers, embedded bar length, and bar eccentricity. For the short-threaded grout couplers, the embedded bar length, which is equivalent to 8 times bar diameter with bar eccentricity equal to zero, exhibited the best performance in terms of strength, ductility, energy absorption, and failure mode, which is suitable to be used in the high seismic zone. Additionally, the short-threaded grout couplers with the embedded bar length equal to 7 times bar diameter and the long grout couplers that required embedded bar length that is equal to 8 times bar diameter, are suitable to be used in the low-to-medium seismic zone. Besides, the embedded bar length that is smaller than or equal to the 6 times bar diameter was not sufficient to be utilised in the short-threaded grout couplers and long grout couplers to resist the seismic load due to inadequate bar embedded length. Also, the predicted model is sufficient to estimate the ultimate tensile strength of the grouted couplers. |
| Databáze: | OpenAIRE |
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