RELIABILITY OF MARGINAL WHARF PORT STRUCTURE UNDER SEISMIC LOAD

• Main Author: (NIM : 15010035), RANDY
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/23834
• Institution: Institut Teknologi Bandung

Indonesia is a maritime and archipelago country. As a maritime country, ports in Indonesia take an important role. In normal condition, port takes a role in the <br /> <br /> <br /> regional economic growth. Otherwise, in the extreme condition which is when earthquake disaster occured, port takes a role as logistic distribution path. Hence, <br /> <br /> <br /> port should have risk of failure less than common building, based on SNI 1726-2012 common building has 1% risk targeted in 50 years, thus port infrastructure <br /> <br /> <br /> should have < 1% risk targeted in 50 years. The study in this final project is about the reliability of marginal wharf port structure under seismic load. Earthquake is a natural load that is random in nature thus probabilistic analysis is appropriate to determine the structural risk of failure. Port structure which is being the object of the study is open type port, marginal wharf, using deck on pile structural system and located in Surabaya city. The structure is designed using strong beam (deck) weak column (pile) rule based on Port of Long Beach (POLB), Wharf Design Criteria. Then the result is evaluated <br /> <br /> <br /> using nonlinear static pushover analysis. In the reliability analysis, Incremental Dynamic Nonlinear Time History Analysis (IDNA) is used to get the capacity of the structure in terms of peak ground acceleration (PGA) for various large seismic history all around the world (record to record variation). From the Incremental Dynamic Nonlinear Time History Analysis (IDNA), in terms of PGA, the capacity of the structure that is random <br /> <br /> <br /> stated in fragility curve which is modeled using lognormal distribution model and validated using Kolmogorov-Smirnov test. By using hazard curve (of Surabaya) which shows the annual probability of exceedance of a certain PGA of seismic load, the structural risk of failure is counted using total probability theorem. The result generated from the analysis is the risk of failure is in the amount of 0,169% or about 10-3 in 50 years, this result has reached < 1% risk targeted in 50 years.