Seismic and Energy Integrated Retrofitting of Existing Buildings with an Innovative ICF-Based System: Design Principles and Case Studies
| Autor: | Lorenzo De Stefani, Valentina Pertile, Roberto Scotta, Alberto Stella |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Computer science
Geography Planning and Development TJ807-830 thin reinforced concrete walls Management Monitoring Policy and Law TD194-195 Construction engineering Renewable energy sources integrated retrofit case study Insulating concrete form medicine Retrofitting GE1-350 Case study Existing buildings ICF Integrated retrofit Thin reinforced concrete walls Environmental effects of industries and plants Renewable Energy Sustainability and the Environment business.industry Stiffness existing buildings Masonry Environmental sciences Work (electrical) Factory (object-oriented programming) Systems design medicine.symptom business Reduction (mathematics) |
| Zdroj: | Sustainability, Vol 13, Iss 9363, p 9363 (2021) Sustainability Volume 13 Issue 16 |
| ISSN: | 2071-1050 |
| Popis: | This work proposes an innovative integrated retrofitting system aiming to improve both the seismic and energy performance of existing reinforced concrete and masonry buildings. The system is based on engineered insulating concrete form panels, installed on the outside of existing buildings as a shell exoskeleton. A key major advantage of the proposed system is that it addresses the contemporary improvement of seismic and energy performances of existing buildings in a single installation stage, operating exclusively from outside of the building. The insulating formworks are ad hoc prefabricated in a factory on the base of the specific geometry of the existing buildings so as to greatly maximize the ratio between overall retrofitting benefits and costs and at the same time to simplify the installation procedures. The objectives of the presented research are, on one hand, to highlight the major structural issues that the system aims to address, and on the other hand to illustrate the main characteristics and combined benefits of the proposed retrofitting system. From a structural point of view, the proposed system is conceived to behave as a non-dissipative structure with regard to seismic actions, and the lateral strength and stiffness of the structural elements are designed accordingly. An analytical design approach is proposed and validated using the available data from an experimental test performed on a full-scale simple building. Moreover, numerical modeling strategies for the proposed system are illustrated for two complex case study buildings. The results of the analyses show a considerable increase in lateral stiffness of the retrofitted buildings that, considering the non-dissipative behavior of the elements, leads to a relevant reduction of seismic deformation demand on existing structural elements. |
| Databáze: | OpenAIRE |
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