Assessment of load carrying capacity enhancement of an open spandrel masonry arch bridge by dynamic load testing
| Autor: | Shervan Ataei, Amin Miri, Meysam Jahangiri |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
Visual Arts and Performing Arts business.industry 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Conservation Structural engineering Masonry Load carrying Capacity enhancement Dynamic load testing 0201 civil engineering Axle Deflection (engineering) 021105 building & construction Architecture Geotechnical engineering business Masonry arch |
| Zdroj: | International Journal of Architectural Heritage. :1-15 |
| ISSN: | 1558-3066 1558-3058 |
| DOI: | 10.1080/15583058.2017.1317882 |
| Popis: | Health monitoring of masonry railway bridges is vital due to their long life in service, an increasing demand for higher axle loads, and the recent trends in sustainability that requires the preservation of aged masonry bridges. Safety assessment of a 70-year-old masonry arch bridge is presented. The bridge is situated in a S-shaped curved section of the track and has long spans of 36 m. Added the deterioration of masonry due to old age of the bridge and complex behavior of masonry arch bridges, dynamic load tests are employed and global structural responses to allowable loading schemes of the bridge are determined. Dynamic amplification factors are determined and compared to those proposed by standards and it is concluded that experimental values are higher than those proposed by standards. Model calibration is carried out using deflection signatures. Experimental and analytical natural frequencies are compared for model verification. Having the model calibrated and verified, safety of bridge in ... |
| Databáze: | OpenAIRE |
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