Title - City, Country Company 155 SE AP 4 Contact Celuos Alves de Oliveira Junior Address Av. Brasil, 20101 21515-001 Rio de Janeiro, Brazil Website www.estub.com.br In 1969, the Engineer João Ricardo Mendes returned from France to revolutionize the way tubular structures were built and designed. The engineering concepts acquired combined with work experience were essential to transform his office into one of the most respected companies in the industry. Founded in Recife, in October 1969, Estub was a pioneer in the development of tubular structures. In 1975 a partnership with Entrepose started, which allowed a bit of European technology to be brought to Brazil. This technology has been carefully adapted to the realities of Brazilian market. Owner Cimento Lafarge General Contractor Simi Brasil Engineering Office Estub Grupo João Mendes Construction Period 01/2015 - 02/2015 The Lafarge Cement Plant built a large duct at their site. For this project a temporary structure to support the steel duct (4 m diameter, 16 mm thickness and 420 kN approximate weight) was designed using SCIA Engineer. The duct assembly was carried out in two stages, the first stage being the construction of the 35 m high temporary shoring structure, comprising tubular steel towers with a circular cross-section of 48 mm and thickness of 3.35 mm, stiffened by space trusses, with bars of the same diameter. For the first step of the analysis, a numerical model of the towers determined the stiffness coefficients at the top of the support structure. These coefficients were placed into the duct model (second phase), featuring the towers as a flexible support structure and determining the reactions of the supports under these conditions. Then we could return to the model of the towers, now subjected to loading from the duct. All the forces and displacements on the structure were determined by a geometric non-linear static analysis, using the Newton Raphson method to solve the equations. Considering the challenges faced (time and precision), SCIA Engineer Scaffolding proved to be the best solution due to its accurate results and precision, offering best engineering construction system. Category 4: Special Projects Estub Sistemas Construtivos Shoring Structure for Duct Support - Caaporã PB, Brazil SE
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