Flexural and Shear Performance of Prestressed Composite Slabs with Inverted Multi-Ribs
| Autor: | Kang Su Kim, Seung-Ho Choi, Jae-Hoon Jeong, Seokdong Choi, Sun-Jin Han, Hyo-Eun Joo |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
inverted multi tee structural performance Composite number 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology lcsh:Technology 0201 civil engineering law.invention lcsh:Chemistry Prestressed concrete Flexural strength law Precast concrete 021105 building & construction General Materials Science shear strength Reinforcement lcsh:QH301-705.5 Instrumentation Fluid Flow and Transfer Processes precast concrete prestressed concrete lcsh:T business.industry Process Chemistry and Technology General Engineering Structural engineering lcsh:QC1-999 Computer Science Applications lcsh:Biology (General) lcsh:QD1-999 Shear (geology) lcsh:TA1-2040 Slab lcsh:Engineering (General). Civil engineering (General) business lcsh:Physics flexural analysis |
| Zdroj: | Applied Sciences, Vol 9, Iss 22, p 4946 (2019) Applied Sciences Volume 9 Issue 22 |
| ISSN: | 2076-3417 |
| Popis: | Half precast concrete slabs with inverted multi-ribs (Joint Advanced Slab, JAS), which enhance composite performance between slabs by introducing shear keys at connections between the slabs and improve structural performance by placing prestressing tendons and truss-type shear reinforcements, have recently been developed and applied in many construction fields. In this study, flexural and shear tests were performed to verify the structural performance of JAS members. Towards this end, two flexural specimens and four shear specimens were fabricated, and the presence of cast-in-place concrete and the location of the critical section were set as the main test variables. In addition, the flexural and shear performance of the JAS was quantitatively evaluated using a non-linear flexural analysis model and current structural design codes. Evaluation results confirmed that the flexural behavior of the JAS was almost similar to the behavior simulated through the non-linear flexural analysis model, and the shear performance of the JAS can also be estimated appropriately by using the shear strength equations presented in the current design codes. For the JAS with cast-in-place concrete, however, the shear strength estimation results differed significantly depending on the way that the shear contributions of the precast concrete unit and cast-in-place concrete were calculated. Based on the analysis results, this study proposed a design method that can reasonably estimate the shear strength of the composite JAS. |
| Databáze: | OpenAIRE |
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