Analysis of Finite Elements of Using the Tuned Liquid Damper in Architectural and Structural Structure of Stencil Platforms Affected by Earthquake Waves

Abstract

The most common types of fixed offshore structures in marine areas around native settlements that are used today are jacket or stencil platforms. Nowadays, researchers pay great attention to modern methods of absorbing earthquake, wind and other side forces in strengthening built structures.  The input energy to the structure could be reduced by adding some systems in different pieces of the structure (built or being built), hence greatly reduce the structure reaction and caused damages. to achieve this, new technologies regarding dampers could be used. In this paper the effectiveness of the tuned liquid damper system (TLD [1]) in controlling the dynamic responses of templated offshore platforms (jackets) in marine areas around native settlements under earthquake waves is investigated.In this paper, a stencil platform with suitable dimensions was modeled under certain earthquake with and without dampers, and then the model was analyzed with modal and time history analysis.After certifying the models, the structure behavior was compared in two with and without TLD modes, and after studying the quantitative and general results, it turned out that using tuned liquid dampers in the lower deck of the platform is much more suitable and optimized than other methods.