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The paper presents the weight optimization process of the main steel truss that supports the Slatina Sport Hall roof. The structure was loaded with self-weight, dead loads, live loads, snow, wind and temperature, grouped in eleven load cases. The optimization of the structure was made using genetic algorithms implemented in a Matlab code. A total n...
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Citations
... M.J. Razavi, Van Hooreweder, and Berto 2020).In the specific case of large and complex civil structures the fluctuating, time-dependent wind loads or the load applied by the fluid flow to the bridge structures can be categorized as variable amplitude fatigue loading conditions(Lorenzon, Antonello, and Berto 2018). As one of the main goals for design of large structures, weight optimization techniques have been proposed and used in the past(Dogan and Ozyuksel Ciftcioglu 2020;Cicconi et al. 2016;Wennhage 2003;Mojolic, Hulea, and Pârv 2015). Due to the high flexibility of AM in producing geometrically optimized parts, one of the advantages of using this technology in construction would be the weight reduction of the structure. ...
Demand for the construction of new structures is increasing all over the world. Since the construction sector dominates the global carbon footprint, new construction methods are needed with reduced embodied carbon and high resource efficiency to realize a sustainable future. In this direction, Metal Additive Manufacturing, also known as 3D printing, can be an opportunity. Many studies are underway to answer open questions about printed metal products and processes for high-tech industries. The construction sector must join the metal 3D printing research more actively to enrich the knowledge and experience on this technology and correctly adapt the process parameters suitable to the construction sector requirements. This paper states the opinion of a research group composed of academics and practitioners from Europe, the US, Japan, and South Africa on how metal 3D printing can be a complementary tool/technology to conventional manufacturing to increase productivity rates and reduce the costs and CO2 emissions in the construction industry.
... The optimization problem was worked out in MATLAB and uses evolutionary theories, respectively genetic algorithms [4,5]. The objective function is the minimum value of the bending moment on the roof's supporting columns. ...
The present paper proposes an automatic dynamic process in order to find the parameters of the seismic isolation systems applied to large span structures. Three seismic isolation solutions are proposed for the model of the new Slatina Sport Hall. The first case uses friction pendulum system (FP), the second one uses High Damping Rubber Bearing (HDRB) and Lead Rubber Bearings, while (LRB) are used for the last case of isolation. The placement of the isolation level is at the top end of the roof supporting columns. The aim is to calculate the parameters of each isolation system so that the whole’s structure first vibration periods is the one desired by the user. The model is computed with the use of SAP2000 software. In order to find the best solution for the optimization problem, an optimization process based on Genetic Algorithms (GA) has been developed in Matlab. With the use of the API (Application Programming Interface) libraries a two way link is created between the two programs in order to exchange results and link parameters. The main goal is to find the best seismic isolation method for each desired modal period so that the bending moment on the supporting columns should be minimum.
... On the other direction, secondary trusses are positioned that passes through the nodes of the main trusses at a distance of approximately 5.24 m. The secondary trusses have the span equal to 11 m and the height of 1.1m [4,5]. ...
This paper presents a conceptual optimization problem for seismic isolated structures with large span roofs. The research proposes that the isolation level should be placed at the top of the columns that support the roof structure. This solution was mainly adopted because of the architectural conception of the model. Three distinct passive isolation systems are proposed in order to reduce the seismic response of the structure. The first case implies the use of Friction Pendulum systems (FP) while the other ones use High Damping Rubber Bearing (HDRB) and Lead Rubber Bearing (LRB) in combination with low friction pot-bearing systems. Using seven sets of accelerograms, the values for the main seismic response parameters are extracted and the efficiency of the system is underlined.
