Analisa Pengaruh Lead Rubber Bearing Terhadap Kinerja Pilar Konvensional Pada Struktur Jembatan Highway Ortotropik Dengan Non Linear Time History Analysis
DOI:
https://doi.org/10.17977/um071v31i12026p1-12Keywords:
Lead Rubber Bearing, Non Linear Time History Analysis, Response Spectrum Analysis, Pilar Konvensional, Jembatan Highway OrtotropikAbstract
Pilar beton bertulang konvensional (cast in situ) masih banyak digunakan pada jembatan dan jalan layang di Indonesia karena konstruksinya sederhana, material dan tenaga kerja tersedia, serta fleksibel terhadap variasi geometri sehingga efisien dari sisi waktu dan biaya. Namun, Indonesia berada di wilayah seismik aktif sehingga struktur pilar berpotensi menjadi elemen kritis saat gempa akibat menerima gaya lateral besar dan mengalami plastifikasi yang memusatkan kerusakan, meningkatkan kebutuhan perbaikan, dan mengganggu layanan. Penelitian ini mengevaluasi efektivitas Lead Rubber Bearing (LRB) untuk meningkatkan kinerja seismik pilar pada jembatan highway ortotropik, mengidentifikasi komponen pendisipasi energi dominan, serta menilai respons pilar pada gempa rencana. Dua konfigurasi dibandingkan, yaitu tanpa LRB dan dengan LRB. Struktur dirancang sesuai ketentuan pembebanan dan gempa yang berlaku, lalu dianalisis menggunakan Response Spectrum Analysis (RSA) dan Non Linear Time History Analysis (NLTHA) dengan tujuh rekaman gempa pada level gempa rencana periode ulang 1000 tahun. Hasil menunjukkan LRB menyebabkan pergeseran periode (period shift) sehingga menurunkan respons inersia global, ditandai berkurangnya gaya dalam, base shear, dan reaksi perletakan. Analisis nonlinier juga menunjukkan struktur dengan LRB cenderung menjaga pilar tetap elastis, sedangkan struktur tanpa LRB menunjukkan pilar lebih rentan leleh akibat perubahan periode, peningkatan redaman efektif, dan perubahan tuntutan respons pada sistem perletakan.
References
American Concrete Institute. (2014). Building code requirements for structural concrete (ACI 318-14). American Concrete Institute.
American Association of State Highway and Transportation Officials. (2010). Guide specifications for seismic isolation design. AASHTO.
American Association of State Highway and Transportation Officials. (2014). AASHTO LRFD bridge design specifications. AASHTO.
Ancheta, T. D., Darragh, R. B., Stewart, J. P., Seyhan, E., Silva, W. J., Chiou, B. S.-J., & others. (2013). PEER NGA-West2 database (PEER Report 2013/03). Pacific Earthquake Engineering Research Center, University of California, Berkeley.
Badan Standardisasi Indonesia. (2013). SNI 2847:2013 Persyaratan beton struktural untuk bangunan gedung. Badan Standardisasi Indonesia.
Badan Standardisasi Indonesia. (2016). SNI 1725:2016 Pembebanan untuk jembatan. Badan Standardisasi Indonesia.
Badan Standardisasi Indonesia. (2016). SNI 2833:2016 Standar perencanaan ketahanan gempa untuk jembatan. Badan Standardisasi Indonesia.
Baig, M. A., Ansari, M. I., Islam, N., & Umair, M. (2022). Effect of lead rubber bearing on seismic performance of steel box girder bridge. Materials Today: Proceedings, 64(Part 1), 468–480. https://doi.org/10.1016/j.matpr.2022.04.953
Buckle, I. G., Constantinou, M. C., Dicleli, M., & Ghazem, H. (2006). Seismic isolation of highway bridges. MCEER.
California Department of Transportation. (2013). Seismic design criteria (SDC). Caltrans.
Chen, W., & Duan, L. (2014). Bridge engineering handbook. CRC Press.
Chen, X., Xiang, N., Li, J., & Guan, Z. (2020). Influence of near-fault pulse-like motion characteristics on seismic performance of tall pier bridges with fragility analysis. Journal of Earthquake Engineering. https://doi.org/10.1080/13632469.2020.1751345
Federal Emergency Management Agency. (2009). Quantification of building seismic performance factors (FEMA P695). FEMA.
Hassan, A. L., & Billah, A. H. M. M. (2020). Influence of ground motion duration and isolation bearings on the seismic response of base-isolated bridges. Engineering Structures, 222, 111129. https://doi.org/10.1016/j.engstruct.2020.111129
Kenarkoohi, M., & Hassan, M. (2024). Review of accelerated construction of bridge piers—Methods and performance. Advances in Bridge Engineering, 5, Article 3. https://doi.org/10.1186/s43251-024-00116-6
Komisi Keamanan Jembatan dan Terowongan Jalan. (2018). KKJT draft konsensus. Komisi Keamanan Jembatan dan Terowongan Jalan.
National Cooperative Highway Research Program. (2011). Application of accelerated bridge construction connections in moderate-to-high seismic regions (NCHRP Report 698). Transportation Research Board.
National Cooperative Highway Research Program. (2011). Seismic isolation design examples of highway bridges (NCHRP Report 20-7/Task 262). Transportation Research Board.
National Cooperative Highway Research Program. (2017). Seismic evaluation of bridge columns with energy dissipating mechanism (NCHRP Report 864). Transportation Research Board.
Pang, Y., Wei, K., He, H., & Wang, W. (2022). Assessment of lifetime seismic resilience of a long-span cable-stayed bridge exposed to structural corrosion. Soil Dynamics and Earthquake Engineering, 157, 107275. https://doi.org/10.1016/j.soildyn.2022.107275
Rauzana, A., & Dharma, W. (2022). Causes of delays in construction projects in the Province of Aceh, Indonesia. PLOS ONE, 17(1), e0263337. https://doi.org/10.1371/journal.pone.0263337
Science Learning Hub. (2007). Model lead rubber bearing (LRB). Science Learning Hub.
Shiddiqi, H. A. (2019). Studi analisis kinerja pilar precast pada struktur multispan LRT menggunakan lead rubber bearing dengan non linier time history analysis (Master’s thesis, Institut Teknologi Bandung).
Supendi, P., Widiyantoro, S., Gunawan, E., Muhari, A., Rawlinson, N., Mori, J., Hanifa, N. R., Susilo, S., Shiddiqi, H. A., Nugraha, A. D., & Putra, H. E. (2020). Implications for megathrust earthquakes and tsunamis from seismic gaps south of Java, Indonesia. Scientific Reports. https://doi.org/10.1038/s41598-020-72142-z
Sun, G., Wang, Y., Yang, J., Chen, S., Liu, H., & Zhao, J. (2024). Lightweight design method of orthotropic steel bridge deck with U-ribs based on multi-objective optimization. Ain Shams Engineering Journal, 15(2), 102414. https://doi.org/10.1016/j.asej.2023.102414
Virlianda, W. N. (2018). Penilaian risiko kegempaan dan retrofit pada jembatan gelagar beton prategang dengan kombinasi sistem struktur balok sederhana dan sistem portal dengan metode incremental dynamic analysis (Master’s thesis, Institut Teknologi Bandung).
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