EVALUATION OF THE STRENGTH AND PERFORMANCE OF THE EXISTING HEXAGONAL BUILDING BY CONSIDERING THE DIRECTIVITY OF THE EARTHQUAKE
The large number of potential earthquakes in Indonesia has resulted in building structures having to be designed using an earthquake resistant structural system. However, it is known that many of the existing buildings that are still being designed do not meet the existing SNI requirements. In th...
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| Format: | Theses |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/75000 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The large number of potential earthquakes in Indonesia has resulted in building
structures having to be designed using an earthquake resistant structural system.
However, it is known that many of the existing buildings that are still being designed
do not meet the existing SNI requirements. In the latest SNI regulations, the
requirements for seismic and reinforcement for earthquake resistant structures are
very strict. Today's structures are required to remain stable when an earthquake
occurs. Apart from these requirements, what is also important is the directivity of
the earthquake because it cannot be predicted. This makes planners have to
calculate internal forces with different directivity to find out the largest internal
force to be used in planning. In addition, it is necessary to evaluate existing
buildings to mitigate risks due to changes in earthquake loads and to find out how
well the actual structural performance of the building is. If from the results of the
evaluation, the existing building does not meet the targeted performance level, it is
necessary to repair the structure to improve the performance of the structure. In
this study, 2 earthquake directivity models were used with a reinforced concrete
structure model that functions as a flat with a height of 10 floors located in the city
of Bandung with moderate soil conditions (SD). Existing buildings were evaluated
by pushover analysis and nonlinear time history analysis (NLTHA) with 3 (three)
pairs of time history earthquakes that have been scaled by spectral matching
method. The structure response to be compared is the collapse mechanism and the
level of performance based on the directivity being reviewed. |
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