Erlangga, Fadli (2026) PERBANDINGAN KINERJA SEISMIK STRUKTUR GEDUNG HOTEL PATRA SURABAYA DENGAN SISTEM DILATASI MENGGUNAKAN PUSHOVER ANALYSIS. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
The city of Surabaya has a potential earthquake hazard due to its proximity to active faults; therefore, structures must be designed to resist seismic loads. The Patra Hotel Surabaya building has an irregular L-shaped plan, which may lead to torsional irregularities due to the uneven distribution of mass and stiffness. This study aims to design an expansion joint (dilatation) system, determine the location of structural separation, select appropriate joint materials, and analyze the seismic performance of the structure in both conditions: without and with dilatation. The model without dilatation represents the original L-shaped building as a single structure, while the dilatation model separates the building into two blocks, where Model 1 represents the first block and Model 2 represents the second block. The seismic performance evaluation is carried out using a Performance-Based Design approach through Pushover Analysis based on ATC-40 and SNI 1726:2019. The analysis results show that the maximum displacement of Model 1 is 88.209 mm in the X direction and 73.431 mm in the Y direction, while Model 2 has 71.841 mm in the X direction and 85.047 mm in the Y direction. Based on these results, the required expansion joint gap (δmt) is 150 mm. The expansion joint uses aluminum material with a movement capacity of ±75 mm for thermal effects and 150 mm for seismic effects, exhibiting flexible and elastic behavior. The pushover analysis results indicate that both Model 1 and Model 2 achieve the Immediate Occupancy performance level, with ductility values of 9.89 (X direction) and 7.65 (Y direction) for Model 1, and 9.59 (X direction) and 7.94 (Y direction) for Model 2. The comparison of seismic performance shows that the model without dilatation has a larger maximum displacement, reaching 173.404 mm in the X direction and 145.164 mm in the Y direction. In comparison, Model 1 has 172.933 mm (X) and 141.229 mm (Y), while Model 2 has 137.923 mm (X) and 165.639 mm (Y). The drift ratio of the model without dilatation is also higher, at 1.149 (X) and 1.116 (Y), compared to Model 1 with 1.087 (X) and 1.073 (Y), and Model 2 with 1.020 (X) and 1.104 (Y). Furthermore, the column reinforcement requirements in the model without dilatation are greater (K1 32D22, K2 28D22, K3 24D22) compared to the dilatation system (K1 28D22, K2 24D22, K3 20D22). Therefore, the implementation of a dilatation system is proven to improve seismic performance by reducing maximum displacement and drift ratio, while also resulting in a safer and more economical structural design.
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||||||
| Divisions: | Faculty of Engineering > Departement of Civil Engineering | ||||||||||||
| Depositing User: | Achmad Fadli Erlangga | ||||||||||||
| Date Deposited: | 25 May 2026 08:16 | ||||||||||||
| Last Modified: | 25 May 2026 08:16 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/52415 |
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