Shear modulus of masonry walls: a critical review
| Autor: | Filippo Landi, Pietro Croce, Francesco De Lellis, Paolo Formichi, Elisabetta Mariotti, Paolo Cioni, Caterina Mochi, Maria Luisa Beconcini, Isabelle Serra |
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| Rok vydání: | 2018 |
| Předmět: |
Pushover methods
business.industry Computer science Masonry buildings Diagonal 0211 other engineering and technologies Modulus 020101 civil engineering Seismic resistance 02 engineering and technology Structural engineering Masonry Static analysis Compression (physics) Seismic vulnerability 0201 civil engineering Stress level Shear modulus Seismic vulnerability Masonry buildings Seismic resistance Seismic risk index Pushover methods 021105 building & construction Range (statistics) Seismic risk index business Earth-Surface Processes |
| Zdroj: | Procedia Structural Integrity. 11:339-346 |
| ISSN: | 2452-3216 |
| DOI: | 10.1016/j.prostr.2018.11.044 |
| Popis: | In the assessment of seismic performance of masonry buildings, the proper definition of mechanical parameters of masonry, the shear modulus in particular, is a critical issue. Moreover, considering that existing buildings are characterized by several masonry types, depending on the material as well as on the texture, mechanical parameters can vary in a very wide range, also because they depend on many other parameters and in particular on the integrity of the walls and on the stress level. Although the in situ or laboratory experimental evaluation of the G modulus has been the subject of a wide literature concerning flat jacks, diagonal and single compression and shear-compression test results, its outcomes are often contradictory. In effect, values given by different studies often differ significantly, even for the same class of masonry. Since the intrinsic scattering of the parameter is not sufficient by itself to justify the huge variability of the results, a critical discussion of the results as well as of the individual test arrangements is necessary to make the background more reliable, also in view of better addressing further studies- A huge database has been setup combining masonry test results available in the relevant scientific literature with the test results obtained in the framework of the in situ experimental campaign carried out by the authors for the assessment of seismic vulnerability of masonry school buildings in the Municipality of Florence. The analysis of the database underlines that values of the shear modulus G, which is a fundamental parameter for the definition of capacity curve for walls commonly used in non-linear static analysis, are extremely scattered. Testing methodology and arrangement are discussed and a possible procedure is proposed to arrive to sounder estimations of relevant mechanical parameter of existing building masonry. |
| Databáze: | OpenAIRE |
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