Determine the design parameters for the stability of fixed offshore platforms (Jacket) in the Syrian coast by using computer modeling

The efficiency of offshore platforms and their safe design depend on a complex structure of mutual influence between these installations on the one hand and the surrounding environment and on the degree of resistance to different loading patterns during the entire investment period. The fixed platform of the Jacket is a large metal frame facility used to explore and extract oil and gas. The main function of the marine platform is to ensure the stability of the upper section above it, with all the facilities included in operating conditions, normal and unusual (weather conditions). In addition, the platform must be designed to be fully capable of resisting various environmental loads. Many studies have shown that the rise of sea wind waves plays a major role in the design of marine platforms compared to other environmental factors. The statistical analysis of the Jacket marine platform was carried out using the SACS program after building the model and applying the environmental loads according to three loading cases (45,90,135) according to the trends of the wind waves on the Syrian coast (southwest, west, north west). After comparing the values of the base shear and overturning moments according to three loading cases, the maximum value of each of them occurs in the direction of the south-west loading. The stress ratio applied to all elements compared with the stress allowed under storm conditions (Unity Check) (UC <1) is verified according to the design code (API) and thus It is in normal operating conditions, and even in the marine platform storm conditions will be able to withstand and Achieving safety .