Analisis Perbandingan Jacket Structure Konfigurasi Fully X-Brace, KT-Brace, dan V-Brace dengan Pendekatan Dinamis

Perkembangan teknologi yang kian maju mendorong peningkatan angka ketergantungan terhadap produk-produk migas baik skala kecil maupun besar, baik penggunaan secara pribadi maupun kepentingan industri. Menurut International Energy Agency-IEA (2008), hingga tahun 2030 sekitar 80% kebutuhan energi dunia dipasok dari bahan bakar fosil yaitu minyak bumi dan gas. Oleh karena itu, dibutuhkannya anjungan jacket platform untuk proses eksploitasi. Jacket platform hingga kini masih mendominasi perairan Indonesia, pasalnya karakteristik gelombang yang terbilang rendah kian menguatkan engginer untuk menyepakati Jacket platfrom menjadi Offshore Structure yang tepat bagi perairan Indonesia. Kelebihan ini pun juga dibarengi dengan kondisi perairan Indonesia yang berada pada lempeng tektonik yang menjadikan Indonesia berada pada posisi ke 2 negara yang rawan ancaman gempa. Maka dari itu pengaruh gempa ini sangat berpotensi menyebabkan kerusakan struktur hingga keruntuhan pada jacket platform. Sehingga penulis akan melakukan analisis seismik variasi Bracing X-Brace, V-Brace, dan KT-Brace pada struktur jacket platform sehingga didapatkan periode natural, hasil member code check (UC) pada kondisi SLE (Strength Level Earthquake) dan kondisi DLE (Ductility Level Earthquake) serta Mengetahui hasil perbandingan superelement dengan earthquake response. Dari hasil analisis seismic didapatkan bahwa konfigurasi V-brace lebih baik dalam menahan beban gempa pada kondisi SLE dan DLE dimana UC teringgi hanya 0.37 pada UC Pile Row B1 0237 (B2-01). Pada pengambilan 4 segment sample pula V-Brace mendominasi dengan nilai presentase 72.92% kondisi SLE dan pada kondisi DLE 80%. ==================================================================================================== The development of increasingly advanced technology encourages an increase in the number of dependence on oil and gas products, both small and large scale, both for personal use and industrial interests. According to the International Energy Agency-IEA (2008), by 2030 around 80% of the world's energy needs will be supplied from fossil fuels, namely oil and gas. Therefore, a jacket platform platform is needed for the exploitation process. Until now, the jacket platform still dominates Indonesian waters, because the relatively low wave characteristics have strengthened engineers to agree on the Jacket platform to be the right Offshore Structure for Indonesian waters. This advantage is also accompanied by the condition of Indonesian waters which are located on tectonic plates which makes Indonesia in the second position of the country that is prone to earthquake threats. Therefore, the effect of this earthquake has the potential to cause structural damage to the collapse of the jacket platform. So that the author will conduct a seismic analysis of the X-Brace, V-Brace, and KT-Brace Bracing variations on the jacket platform structure to obtain a natural period, member code check (UC) results under SLE (Strength Level Earthquake) and DLE (Ductility Level) conditions. Earthquake) as well as knowing the results of the comparison of superelement with earthquake response. From the results of the seismic analysis, it was found that the V-brace configuration was better in resisting earthquake loads in SLE and DLE conditions where the highest UC was only 0.37 at UC Pile Row B1 0237 (B2-01). In taking 4 segment samples, the V-Brace also dominates with a percentage value of 72.92% for SLE conditions and 80% for DLE conditions