Using System Reliability Concepts to Derive Partial Safety Factors for Punching Shear with Shear Reinforcement: An Explorative Analysis
Punching shear-reinforced flat slabs can fail in three modes: (1) inside the shear-reinforced zone, (2) outside the shear-reinforced zone, or (3) at the maximum punching shear capacity. By using the theory of structural systems reliability, this study investigates how these failure modes combined af...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/3/1360 |
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| author | Tânia Feiri Jan Philip Schulze-Ardey Marcus Ricker Josef Hegger |
| author_facet | Tânia Feiri Jan Philip Schulze-Ardey Marcus Ricker Josef Hegger |
| author_sort | Tânia Feiri |
| collection | DOAJ |
| description | Punching shear-reinforced flat slabs can fail in three modes: (1) inside the shear-reinforced zone, (2) outside the shear-reinforced zone, or (3) at the maximum punching shear capacity. By using the theory of structural systems reliability, this study investigates how these failure modes combined affect the safety level of reinforced concrete flat slabs with punching shear reinforcement, and ultimately, the variation of partial factors. Based on DIN EN 1992-1-1 together with the German National Annex DIN EN 1992-1-1+NA(D), and by using distinct reliability-based methods (i.e., levels II and III), the variation in the system failure probabilities and, consequently, partial factors were analysed. The results indicated that partial factors can fluctuate significantly depending on the governing ultimate limit state function and the scatter of basic variables. Furthermore, they indicated that the chosen reliability-based method had a significant influence on the resulting safety level. The sensitivity analysis confirmed the premise that partial factors can be reduced without compromising socially accepted safety levels (e.g., recommended in DIN EN 1990). Ultimate benefits include material and cost savings and CO<sub>2</sub> emission reductions. Finally, the approach addressed in this paper offers a new perspective on the derivation of partial factors that can be considered by engineering practitioners. |
| first_indexed | 2024-03-11T09:53:35Z |
| format | Article |
| id | doaj.art-fdf1e8324c334df8913d1371beefd38f |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T09:53:35Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-fdf1e8324c334df8913d1371beefd38f2023-11-16T16:04:21ZengMDPI AGApplied Sciences2076-34172023-01-01133136010.3390/app13031360Using System Reliability Concepts to Derive Partial Safety Factors for Punching Shear with Shear Reinforcement: An Explorative AnalysisTânia Feiri0Jan Philip Schulze-Ardey1Marcus Ricker2Josef Hegger3Institute of Structural Engineering, Hochschule Biberach—University of Applied Sciences, 88400 Biberach an der Riß, GermanyInstitute of Structural Concrete, RWTH Aachen University, 52074 Aachen, GermanyFaculty of Architecture and Civil Engineering, RheinMain University of Applied Sciences, 65197 Wiesbaden, GermanyInstitute of Structural Concrete, RWTH Aachen University, 52074 Aachen, GermanyPunching shear-reinforced flat slabs can fail in three modes: (1) inside the shear-reinforced zone, (2) outside the shear-reinforced zone, or (3) at the maximum punching shear capacity. By using the theory of structural systems reliability, this study investigates how these failure modes combined affect the safety level of reinforced concrete flat slabs with punching shear reinforcement, and ultimately, the variation of partial factors. Based on DIN EN 1992-1-1 together with the German National Annex DIN EN 1992-1-1+NA(D), and by using distinct reliability-based methods (i.e., levels II and III), the variation in the system failure probabilities and, consequently, partial factors were analysed. The results indicated that partial factors can fluctuate significantly depending on the governing ultimate limit state function and the scatter of basic variables. Furthermore, they indicated that the chosen reliability-based method had a significant influence on the resulting safety level. The sensitivity analysis confirmed the premise that partial factors can be reduced without compromising socially accepted safety levels (e.g., recommended in DIN EN 1990). Ultimate benefits include material and cost savings and CO<sub>2</sub> emission reductions. Finally, the approach addressed in this paper offers a new perspective on the derivation of partial factors that can be considered by engineering practitioners.https://www.mdpi.com/2076-3417/13/3/1360systems reliabilityRC flat slabspunching shearpunching shear reinforcementpartial factorsreliability-based analysis |
| spellingShingle | Tânia Feiri Jan Philip Schulze-Ardey Marcus Ricker Josef Hegger Using System Reliability Concepts to Derive Partial Safety Factors for Punching Shear with Shear Reinforcement: An Explorative Analysis Applied Sciences systems reliability RC flat slabs punching shear punching shear reinforcement partial factors reliability-based analysis |
| title | Using System Reliability Concepts to Derive Partial Safety Factors for Punching Shear with Shear Reinforcement: An Explorative Analysis |
| title_full | Using System Reliability Concepts to Derive Partial Safety Factors for Punching Shear with Shear Reinforcement: An Explorative Analysis |
| title_fullStr | Using System Reliability Concepts to Derive Partial Safety Factors for Punching Shear with Shear Reinforcement: An Explorative Analysis |
| title_full_unstemmed | Using System Reliability Concepts to Derive Partial Safety Factors for Punching Shear with Shear Reinforcement: An Explorative Analysis |
| title_short | Using System Reliability Concepts to Derive Partial Safety Factors for Punching Shear with Shear Reinforcement: An Explorative Analysis |
| title_sort | using system reliability concepts to derive partial safety factors for punching shear with shear reinforcement an explorative analysis |
| topic | systems reliability RC flat slabs punching shear punching shear reinforcement partial factors reliability-based analysis |
| url | https://www.mdpi.com/2076-3417/13/3/1360 |
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