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Abstrak :
The increased volcanic activity of Mount Anak Krakatau has raised the awareness of the potential tsunami impact for the construction of National Capital Integrated Coastal Development (NCICD) Project. This research is aimed to evaluate the tsunami impact on the outer sea dike of NCICD. The 1883 Krakatau tsunami was used as reference to evaluate the coastal infrastructure. Time series data from the 1883 Krakatau tsunami is extracted as an input to calculate the wave force. There are three different methods used such as Rule of Thumb (wave force is twice that of hydrostatic force), Linear Theory, Sainflou method. The results show that the tsunami will hit the outer sea dike with at least force about 70 kN. The outer sea dike OSD-1A is the least impacted sea dike while OSD-3A is the most impacted. For OSD-1A, Rule of Thumb and Linear Theory estimate 303.30 kN of wave force while Sainflou method predicts only 73.45 kN. On the other hand, OSD-3A endured wave force of 131.91 kN (Sainflou method) or 531.91 kN (Rule of Thumb and Linear Theory). Sainflou method is for efficient design while the other methods have the benefit of safety factor.

Abstrak :
Studi analisis ini merupakan suatu kegiatan untuk menganalisis dan menghitung kekuatan tegangan tendon dan besar beban ekternal dari lingkungan untuk menghindari terjadinya failure pada perencanaan dan perancangan TLP agar mendapatkan hasil yang optimal serta bangunan dapat bertahan dalam jangka waktu 100 tahun (lifetime design). Guna mencapai tujuan yang dimaksud, harus dilakukan analisis terhadap pembebanan pada struktur TLP sendiri, beban angin, arus, jenis soil, dan beban ombak yang diderita TLP dalam kondisi kritis yaitu pada kondisi badai 100 tahunan di tempat operasional. Adapun hasil analisis ini menyatakan bahwa kekuatan tegangan tendon pada TLP yaitu 239.105.642,12 N/m2 dan hal ini sesuai dengan standar sehingga mampu diterapkan di laut dalam Wilayah Timur Kalimantan, Indonesia.

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This analysis study is an activity to analyze and calculate about the tendon tensile strength of Tension Leg Platform (TLP) and the value of external load to avoid a failure in planning and designing it in order to obtain optimal results, and this building can survive within period 100 years (lifetime design). To achieve this intended goal, should be analyzed internal load on the structure, wind load, currents load, soil type, and wave load in critical condition (100 years storm condition) of operational place. The result of this analysis states the tendon tensile strength is 239.105.642,12 N/m2, it shall be appropriate with the standards an regulations, so the TLP can be applied for deep water on Eastern Region of Kalimantan, Indonesia.