Analisis Konfigurasi Shear Wall Struktur Bangunan Podium akibat Respon Gempa dengan Metode Respon Spektrum

Yeyen Fajar Herlambang; Kartika Purwitasari; Nila Kurniawati Sunarminingtyas; Yehezkiel Septian Yoganata; Kharisma Nur Cahyani

doi:10.26905/cjce.v5i1.16439

Authors

Yeyen Fajar Herlambang Politeknik Negeri Malang
Kartika Purwitasari Politeknik Negeri Malang https://orcid.org/0009-0006-5029-0781
Nila Kurniawati Sunarminingtyas Universitas Merdeka Malang
Yehezkiel Septian Yoganata Politeknik Negeri Malang
Kharisma Nur Cahyani Politeknik Negeri Malang

DOI:

https://doi.org/10.26905/cjce.v5i1.16439

Keywords:

Analisis respon spektrum, Dinding geser, Struktur podium, Struktur tahan gempa

Abstract

Indonesia berada pada zona pertemuan tiga lempeng tektonik aktif sehingga struktur bangunan, termasuk tipe podium yang memiliki ketidakteraturan vertikal, perlu dirancang untuk memberikan performa seismik yang optimal. Penelitian ini bertujuan mengevaluasi pengaruh variasi konfigurasi dinding geser terhadap respons seismik struktur podium. Empat model struktur dengan perbedaan tata letak shear wall dianalisis menggunakan Metode Respons Spektrum berdasarkan SNI 1726:2019 dan SNI 1727:2020. Parameter utama yang dikaji meliputi story shear, story displacement, eksentrisitas COM–COR, dan overturning moment. Hasil analisis menunjukkan bahwa Model 3 memberikan distribusi story shear paling stabil pada arah X dan Y, sementara nilai story displacement terkecil diperoleh pada Model 2 untuk arah X dan Model 3 untuk arah Y. Model 3 dan Model 4 juga menghasilkan eksentrisitas COM–COR dan overturning moment terendah. Temuan ini menegaskan pentingnya penempatan shear wall yang simetris dan strategis dalam meningkatkan stabilitas struktur podium terhadap beban gempa.

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