Fast Checking of Drift Demand in Multi-Storey Buildings with Asymmetry
| Autor: | Nelson Lam, Prashidha Khatiwada, Daniel T. W. Looi, Elisa Lumantarna |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Computer science
As is media_common.quotation_subject torsional amplification 0211 other engineering and technologies 020101 civil engineering 3D to 2D displacement ratio 02 engineering and technology Displacement ratio Asymmetry lcsh:TH1-9745 0201 civil engineering simplified analysis method torsion torsional parameters asymmetric building reinforced concrete building displacement behaviour displacement demands Computer package Architecture Displacement behaviour Civil and Structural Engineering media_common 021110 strategic defence & security studies Commercial software Building and Construction Research findings Industrial engineering lcsh:Building construction |
| Zdroj: | Buildings; Volume 11; Issue 1; Pages: 13 Buildings, Vol 11, Iss 13, p 13 (2021) |
| ISSN: | 2075-5309 |
| DOI: | 10.3390/buildings11010013 |
| Popis: | Buildings possessing an asymmetrical arrangement of structural elements are torsionally unbalanced and can be vulnerable in a seismic event. Building codes of practices typically recommend the use of three-dimensional dynamic analysis to determine the seismic demands of a multi-storey building. Whilst most design practices are well equipped with commercial software for undertaking such analyses, designers often find it difficult to verify results. Much of the published technical articles present findings for buildings based on an idealised single-storey model. As a result of challenges in dealing with real multi-storey buildings, there has been very limited uptake of research findings in design practices. This article presents a three-tiered approach of estimating the displacement behaviour of the building in term of 3D/2D displacement ratio. The estimate can be used for verifying results reported from a computer package conveniently. The quick method provides predictions of the 3D/2D ratio and only requires the gross plan dimensions of the building to be known. The refined method requires knowledge of the torsional stiffness properties to be known, whereas the detailed method requires the eccentricity properties to be known as well. The proposed methodology is robust and reliable, as is demonstrated by case studies undertaken on six real multi-storey buildings. |
| Databáze: | OpenAIRE |
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