چكيده به لاتين
The final goal of this study is to evaluate the performance and responses of buildings whit the LRB seismic isolator by considering the impact of adjacent buildings. In order to achieve this goal, a five-story steel frame structure including two-level superstructure and basement has been considered. The adjacent structure is modeled using an impact element characterized by linear springs located at a specific distances from the isolated structure. The most important characteristic of an isolated structure is the seismic isolator that is used. In this study, Rubber isolators with lead core are used. Therefore, a lead core rubber isolator is used and its parametric comparison in non-impact and impact situations is used. The nonlinear time history analysis method is used to evaluate and compare the results in the case of impact with the adjacent building with the results of non-impact situations. 7 Different accelerations with source, mechanism, intensity and varying duration mostly from near-field earthquakes are used to carry out the analysis.
The major building responses that have been studied in this study are the basic shear building, the acceleration of the roof, and the relative displacement of the building floors, which saw an increase of 50 to 100 percent shear, 76 to 150 percent displacement and 25 to 130 percent acceleration in state of base and stories impact into No impact state and a 20 percent reduction in shear and a 15 to 60 percent displacement in the base impact only state to the non-impact state and increase the 500 to 1000 percent acceleration in the impact base only relative to the non-collision mode.
Keywords:
Impact the adjacent building, seismic isolator, LRB seismic separator, Non-linear Time History Analysis