Análisis de los efectos de fuertes derivas sísmicas en edificios en las estrategias de diseño y comportamiento estructural
Traditional seismic design in most international codes consists on the, so-called, forced-based design (FBD). The seismic regulations of Peru prescribe very low inter-story drift limitations together with rather large ductility reduction factors (R=8). These conditions usually results in very robust...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | español |
| OAI Identifier: | oai:upcommons.upc.edu:2117/341047 |
| Acceso en línea: | https://hdl.handle.net/2117/341047 |
| Access Level: | acceso abierto |
| Palabra clave: | Seismology Sismologia -- Estructures Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Sismologia |
| Sumario: | Traditional seismic design in most international codes consists on the, so-called, forced-based design (FBD). The seismic regulations of Peru prescribe very low inter-story drift limitations together with rather large ductility reduction factors (R=8). These conditions usually results in very robust frames buildings, in order to achieve the needed stiffness. However, as forces are greatly reduced, the columns usually are reinforced with minimum steel ratio. These designs are considered sub-optimal. The objective of seismic provisions is to stablish minimum conditions and design guidelines to ensure public safety and limit losses. These documents should be supported on the basis of stablished engineering knowledge; however, they should not limit innovation. Novel design strategies can be gradually incorporated when they are proved to be adequate, as well as the use of different structural systems. Currently, Peruvian Earthquake-Resistant Code (NTP-E0.30) practically makes impossible to use concrete frame systems in some regions of the country because the drift imposed in the regulation forces the designer to structure with shear walls. The global objective of this Master Thesis is to investigate if feasible and more competitive solutions of concrete frame systems are possible by means of the Displacement-Based-Design Method (DBD), proposed by Priestley et al (2007). The DBD method allows performance-based design of structures. This method has been widely extended in the last decade because it allows control of damage easily, as the design conditions are defined in terms of displacements instead of forces. A series of case-studies are investigated in this Master Thesis. They consist on buildings of 4, 6 and 8 stories, based on the typical height of frame structures built in Peru. The structures are designed with FBD and DBD methods. In order to assess the advantages of DBD, both static and dynamic non-linear methods will be used to determine the effectiveness in damage control of the design strategies. |
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