Effect of Diaphragm Discontinuity in Seismic Response of Multi Storey Reinforced Concrete L-Shape Building
| dc.contributor.advisor | Asnake, Adamu (PhD) | |
| dc.contributor.author | Minas, Moges | |
| dc.date.accessioned | 2020-11-18T08:27:57Z | |
| dc.date.accessioned | 2023-11-11T12:56:25Z | |
| dc.date.available | 2020-11-18T08:27:57Z | |
| dc.date.available | 2023-11-11T12:56:25Z | |
| dc.date.issued | 2020-06-08 | |
| dc.description.abstract | Most recent seismic code put criteria for classified buildings to account the effect come shape regularity. In the present research the buildings taken are regular in elevation and irregular in plan (L-shape). After checking elevation regularity and fundamental period of vibration satisfaction, the equivalent lateral force method of analysis used for analysis of earthquake resistant buildings. Analysis was carried out reinforced concrete framed building where parametric study made to structure exhibiting different opening location-shape planer with varied projections and varied story height based on capacity design principle. Seismic design makes use of energy absorption and dissipation to reduce the design forces in order to achieve economy by properly accounting behavior factor based on code recommendation. Diaphragm discontinuity plays a great role on the response of building when the building exposed to different types and direction of loads. It affects the performance, top story displacement and base shear of building. In this study, the evaluation of diaphragm discontinuity for elevation regular and plan irregular ductile reinforced concrete structures using nonlinear analysis is investigated. The evaluation was carried out by designing elevation regular and plan irregular structures for different parametric condition (opening location, story height and projection lengths) with the provision of the Ethiopian seismic code and by checking their performance through non-linear analysis using CSI ETABS. In this study parametric study has been conducted using same parameters including seismic location, ground type, and ductility class, loading condition, behavior factor and material type for all models. Moreover, the evaluation of diaphragm discontinuity using different models under the same conditions along with performance comparison of structures designed for same ductility class (DCM) were carried out and the findings results are concluded as follows:- For same stories on different slab opened down positions the top story displacement decreases when pushed to both x-and y-direction, especially at the slab opened at the projection part and the comparison values clearly states that for the slab opened down at an angle, main part and projection part, the base shears have decreased respectively when pushed to the x-direction and y-direction. For same stories on different projection lengths, the top story displacement increased by the same percent when pushed to x-direction and decreased when projection length increase to pushed to y-direction and the base shears decreased almost by same percent for all projections when pushed to x-direction and while the projection length increased, the base shears decreased respectively when pushed to y-direction. For different stories on same slab opened down positions, the slab opened down in all stories led the top story displacement to be decreased approximately by the same percentage when pushed to the x direction and when the story level increased, the top story displacement decreased when pushed to y-direction and the base shears decreased almost by same percent when pushed to the x-direction and the base shears decreased when story height increased respectively, when pushed to the y-direction. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/23381 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Diaphragm | en_US |
| dc.subject | Projection | en_US |
| dc.subject | Opened down | en_US |
| dc.subject | pushover | en_US |
| dc.title | Effect of Diaphragm Discontinuity in Seismic Response of Multi Storey Reinforced Concrete L-Shape Building | en_US |
| dc.type | Thesis | en_US |