Seismic Evaluation Of High Rise Building With And Without Base Isolation |
Author(s): |
PROF. TEJASHREE KULKARNI , SECAB INSTITUTE OF ENGG& TECHNOLOGY; MOHAMMAD SALMAN MANIYAR, SECAB INSTITUTE OF ENGG& TECHNOLOGY; MEHABOOB BAIG INAMDAR, SECAB INSTITUTE OF ENGG& TECHNOLOGY; SHAIKH FAISAL IQBAL, SECAB INSTITUTE OF ENGG& TECHNOLOGY; SAYYED AFAAN A PEERZADE, SECAB INSTITUTE OF ENGG& TECHNOLOGY |
Keywords: |
Base Isolation, Regular RCC Building, LRB, Response Spectrum Analysis |
Abstract |
Seismic isolation is a technique that has been used around the world to protect building structures from the damaging effects of earthquake ground shaking. Base isolation is the concept of separating the structure from the ground to avoid earthquake damage is quite simple to grasp. The term base isolation uses the word isolation in its meaning of the state of being separated and base as a part that supports from beneath or serves as a foundation for an object or structure. To study the dynamic behavior of the structure, dynamic analysis should be performed for any type of buildings such as regular and irregular with and without isolator. Dynamic analysis such as dynamic time history analysis or a linear response spectrum analysis can be performed. In the present study two 10-storey RCC buildings with and without base isolation are considered. Lead Rubber Bearing (LRB) Isolator is considered and designed as per UBC 97 code for the building. Response Spectrum Analysis is carried out for both the buildings. From this study it has been concluded that the design base shear for Base Isolated building is decreases compared to Fixed Base building, which means the structure becomes flexible leads to the energy absorption at the base level, which results in reduces the base shear. It is also found that time period in Base Isolated model is increased compared fixed base model, which means it reduces the possibility of resonance of the structure, and displacement at bottom is zero compared to Base Isolated building due to flexibility at base. |
Other Details |
Paper ID: IJSRDV4I31352 Published in: Volume : 4, Issue : 3 Publication Date: 01/06/2016 Page(s): 1584-1587 |
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