Experimentally applied earthquakes and associated loading on a full-scale dry-stacked masonry structure
This paper describes some practical aspects of testing full-scale structures under realistic earthquake loading. A method of filtering earthquake signals so that they can be applied by servo-hydraulic test machines with limited displacement capabilities is presented. Two standard high-pass filtering...
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| Format: | Article |
| Language: | English |
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South African Institution of Civil Engineering
2009-04-01
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| Series: | Journal of the South African Institution of Civil Engineers |
| Subjects: | |
| Online Access: | http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S1021-20192009000100003 |
| _version_ | 1797712898553806848 |
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| author | A Elvin |
| author_facet | A Elvin |
| author_sort | A Elvin |
| collection | DOAJ |
| description | This paper describes some practical aspects of testing full-scale structures under realistic earthquake loading. A method of filtering earthquake signals so that they can be applied by servo-hydraulic test machines with limited displacement capabilities is presented. Two standard high-pass filtering methods, the moving average and the 4th order Butterworth, are considered. Both filters produce very similar results. The El Centro, Northridge and Llolleo earthquakes are considered as case studies. They were filtered and applied to a shaking table carrying a full-scale dry-stacked masonry structure. The table's displacements and accelerations were measured and compared with the filtered curves. The measured displacements showed good agreement with the filtered earthquake signal. The error in the actual applied (measured) accelerations was much greater due to the fact that the tests were carried out in displacement (not acceleration) control, and to the testing system noise (around 13 Hz). The response spectra for the filtered, unfiltered and measured accelerations for the three earthquakes were computed and compared with design earthquake spectra. It was found that at the natural period of the test structure considered, the response spectrum from the original earthquake accelerations and from the filtered/applied accelerations were almost the same. |
| first_indexed | 2024-03-12T07:27:32Z |
| format | Article |
| id | doaj.art-ba816fc2f84a490caaaff5f96a64fcd0 |
| institution | Directory Open Access Journal |
| issn | 1021-2019 |
| language | English |
| last_indexed | 2024-03-12T07:27:32Z |
| publishDate | 2009-04-01 |
| publisher | South African Institution of Civil Engineering |
| record_format | Article |
| series | Journal of the South African Institution of Civil Engineers |
| spelling | doaj.art-ba816fc2f84a490caaaff5f96a64fcd02023-09-02T22:02:51ZengSouth African Institution of Civil EngineeringJournal of the South African Institution of Civil Engineers1021-20192009-04-015111525Experimentally applied earthquakes and associated loading on a full-scale dry-stacked masonry structureA ElvinThis paper describes some practical aspects of testing full-scale structures under realistic earthquake loading. A method of filtering earthquake signals so that they can be applied by servo-hydraulic test machines with limited displacement capabilities is presented. Two standard high-pass filtering methods, the moving average and the 4th order Butterworth, are considered. Both filters produce very similar results. The El Centro, Northridge and Llolleo earthquakes are considered as case studies. They were filtered and applied to a shaking table carrying a full-scale dry-stacked masonry structure. The table's displacements and accelerations were measured and compared with the filtered curves. The measured displacements showed good agreement with the filtered earthquake signal. The error in the actual applied (measured) accelerations was much greater due to the fact that the tests were carried out in displacement (not acceleration) control, and to the testing system noise (around 13 Hz). The response spectra for the filtered, unfiltered and measured accelerations for the three earthquakes were computed and compared with design earthquake spectra. It was found that at the natural period of the test structure considered, the response spectrum from the original earthquake accelerations and from the filtered/applied accelerations were almost the same.http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S1021-20192009000100003earthquake testingfilteringfull-scale testingearthquake response spectra |
| spellingShingle | A Elvin Experimentally applied earthquakes and associated loading on a full-scale dry-stacked masonry structure Journal of the South African Institution of Civil Engineers earthquake testing filtering full-scale testing earthquake response spectra |
| title | Experimentally applied earthquakes and associated loading on a full-scale dry-stacked masonry structure |
| title_full | Experimentally applied earthquakes and associated loading on a full-scale dry-stacked masonry structure |
| title_fullStr | Experimentally applied earthquakes and associated loading on a full-scale dry-stacked masonry structure |
| title_full_unstemmed | Experimentally applied earthquakes and associated loading on a full-scale dry-stacked masonry structure |
| title_short | Experimentally applied earthquakes and associated loading on a full-scale dry-stacked masonry structure |
| title_sort | experimentally applied earthquakes and associated loading on a full scale dry stacked masonry structure |
| topic | earthquake testing filtering full-scale testing earthquake response spectra |
| url | http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S1021-20192009000100003 |
| work_keys_str_mv | AT aelvin experimentallyappliedearthquakesandassociatedloadingonafullscaledrystackedmasonrystructure |