PERFORMANCE COMPARISON OF QUALIFY AND UNQUALIFY HORIZONTAL IRREGULAR STRUCTURES OF SNI 1726:2019 ON EARTHQUAKE RESISTANT STEEL STRUCTURE
Indonesia has a high potential for earthquake incident. The earthquake can destroy building and endanger population's safety. Therefore, earthquake is one of the important aspects considered in design process of building structures. Variations of building plans effect structures category int...
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| Format: | Final Project |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/67008 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Indonesia has a high potential for earthquake incident. The earthquake can destroy
building and endanger population's safety. Therefore, earthquake is one of the
important aspects considered in design process of building structures. Variations of
building plans effect structures category into horizontal irregular structures based
on seismic provisions such as SNI 1726-2019. Variations in the L plan can cause
an eccentricity of the mass center to the rigidity center of the structure, so it can
cause a torsional effect. Therefore, SNI 1726:2019 regulates several consequences
that must be fulfilled if a building is designed to have horizontal irregularities
including torsion. Fulfillment of these requirements indicates a conservative design
and requires considerable costs. Often it is found that there are violations of these
regulations in order to seek the most cost-effective design.
In this final project, a study is conducted on performance comparison ofqualify and
unquality horizontal irregular structures to the consequences of SNI 1726:2019
using pushover analysis. The structure is modeled as a special moment resisting
steel frame structure. The building functions as a six-story office building located
in Jakarta with soft soil category, SE. The evaluation will be reviewed in terms of
the capacity curve, ductility, strength factor, performance point, plastic hinge
formation, and energy dissipation.
Based on the analysis results, the structure that meets the requirements shows
greater stiffness, strength (overstrength), and ductility parameters. The formation
of plastic hinges in beams occurs more in structures that meet the requirements so
that energy absorption is also greater. Unqualified structures fail early in the column
before the other elements reach further yielding levels. Dimensional enlargement
in the critical region due to torsion is able to overcome failures that are concentrated
in that area. |
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