Modification of partial safety factors for a semi-probabilistic evaluation of existing timber structures
The evaluation of the load-bearing capacity of existing structures is a central and important part in the work of structural engineers. Currently, engineers are confronted with the challenge of applying design rules developed for new structures in the evaluation of existing ones as no specific reco...
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| Format: | Article |
| Language: | English |
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Vilnius Gediminas Technical University
2025-02-01
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| Series: | Engineering Structures and Technologies |
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| Online Access: | https://transport.vgtu.lt/index.php/EST/article/view/23007 |
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| _version_ | 1823860042056597504 |
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| author | Maria Loebjinski Zheng Li Wolgang Rug Hartmut Pasternak |
| author_facet | Maria Loebjinski Zheng Li Wolgang Rug Hartmut Pasternak |
| author_sort | Maria Loebjinski |
| collection | DOAJ |
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The evaluation of the load-bearing capacity of existing structures is a central and important part in the work of structural engineers. Currently, engineers are confronted with the challenge of applying design rules developed for new structures in the evaluation of existing ones as no specific recommendations exist on a European level. As a contribution to this, a first step of this study is the evaluation of the reliability level of timber elements subjected to common limit states. Based on these analyses, modifications of the target reliability and of partial safety factors (PSF) for existing structures on the resistance side are studied. Considering a modification of the target reliability, the PSF for the material strength could be proposed with for compressive and flexural strength in limit states, where variable actions are present. Additionally, options for incorporating updated material parameters from a survey on site supported by technical devices are discussed and further need for research is identified. Subsequently, this paper provides a stepwise evaluation procedure including modified PSF considering both, an update of the target reliability and update of the material parameters obtained by a survey on site and is thus adaptive for different individual cases and level of information.
First published online 10 February 2025
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| format | Article |
| id | doaj-art-570b8f5f9b9b4c959c33ce27b5754cdb |
| institution | Kabale University |
| issn | 2029-882X 2029-8838 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Vilnius Gediminas Technical University |
| record_format | Article |
| series | Engineering Structures and Technologies |
| spelling | doaj-art-570b8f5f9b9b4c959c33ce27b5754cdb2025-02-10T16:30:30ZengVilnius Gediminas Technical UniversityEngineering Structures and Technologies2029-882X2029-88382025-02-0114110.3846/est.2022.23007Modification of partial safety factors for a semi-probabilistic evaluation of existing timber structuresMaria Loebjinski0Zheng Li1Wolgang Rug2Hartmut Pasternak3Country Institute for Building Construction and Timber Engineering, Technische Universität Braunschweig, Braunschweig, GermanyInstitute of Civil Engineering, Technische Universität Berlin, Berlin, GermanyFaculty of Timber Engineering, Eberswalde University for Sustainable Development, Eberswalde, GermanyInstitute of Civil and Structural Engineering, Brandenburg University of Technology, Cottbus, Germany The evaluation of the load-bearing capacity of existing structures is a central and important part in the work of structural engineers. Currently, engineers are confronted with the challenge of applying design rules developed for new structures in the evaluation of existing ones as no specific recommendations exist on a European level. As a contribution to this, a first step of this study is the evaluation of the reliability level of timber elements subjected to common limit states. Based on these analyses, modifications of the target reliability and of partial safety factors (PSF) for existing structures on the resistance side are studied. Considering a modification of the target reliability, the PSF for the material strength could be proposed with for compressive and flexural strength in limit states, where variable actions are present. Additionally, options for incorporating updated material parameters from a survey on site supported by technical devices are discussed and further need for research is identified. Subsequently, this paper provides a stepwise evaluation procedure including modified PSF considering both, an update of the target reliability and update of the material parameters obtained by a survey on site and is thus adaptive for different individual cases and level of information. First published online 10 February 2025 https://transport.vgtu.lt/index.php/EST/article/view/23007timberexisting buildingssemi-probabilistic evaluationcode calibration |
| spellingShingle | Maria Loebjinski Zheng Li Wolgang Rug Hartmut Pasternak Modification of partial safety factors for a semi-probabilistic evaluation of existing timber structures Engineering Structures and Technologies timber existing buildings semi-probabilistic evaluation code calibration |
| title | Modification of partial safety factors for a semi-probabilistic evaluation of existing timber structures |
| title_full | Modification of partial safety factors for a semi-probabilistic evaluation of existing timber structures |
| title_fullStr | Modification of partial safety factors for a semi-probabilistic evaluation of existing timber structures |
| title_full_unstemmed | Modification of partial safety factors for a semi-probabilistic evaluation of existing timber structures |
| title_short | Modification of partial safety factors for a semi-probabilistic evaluation of existing timber structures |
| title_sort | modification of partial safety factors for a semi probabilistic evaluation of existing timber structures |
| topic | timber existing buildings semi-probabilistic evaluation code calibration |
| url | https://transport.vgtu.lt/index.php/EST/article/view/23007 |
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