Seismic Isolation System of the Djamaâ El Djazïr Mosque in Algiers
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Bibliographic Details
| Author(s): |
Luca Paroil
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Engineering for Progress, Nature and People, Madrid, Spain, 3-5 September 2014 | ||||
| Published in: | IABSE Symposium Madrid 2014 | ||||
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| Page(s): | 2555-2562 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2014 | ||||
| DOI: | 10.2749/222137814814069309 | ||||
| Abstract: |
The construction of the third biggest mosque in the world - Djamaâ El Djazaïr - began in Algiers in early 2013. Due to the high specified PGA of 6.5m/s² the building, extending over an area of 145 x 145m and up to 65m height, has been isolated with 246 curved surface sliders and 80 hydraulic dampers to provide an overall 8% damping and limit the maximum seismic displacement to 500mm. The dampers display a soft response with a damping exponent of 0.4 for velocities up to 1000mm/s, whereas an integrated force limiter working between 1000 and 1200mm/s was installed in order not to overload the whole system for the maximum credible earthquake. European Community CE marking and testing according to EN15129 [4] was performed at the University of California in San Diego and at the Eucentre in Pavia. A theoretical service life span of 500 years was proven by wear and fatigue testing. |
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| Keywords: |
Hydraulic dampers curved surface sliders
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