Guilherme Fleith de Medeiros

• Doctor of Engineering
• Professor at University of Passo Fundo

Objective: Technological prospecting in patents on flood-resilient housing, with the aim of analyzing the state-of-the-art and existing solutions to mitigate the impacts of floods in vulnerable areas. Theoretical Framework: Concepts and theories that support patent research as a source of technological information. Highlighted are the importance of...

Given the increased interest in enhancing structural sustainability, the current study sought to apply multiobjective optimization to a footbridge with a steel-concrete composite I-girder structure. It was considered as objectives minimizing the cost for building the structure, the environmental impact assessed by CO2 emissions, and the vertical ac...

The demand for more sustainable structures has been shown as a growing tendency, and engineers can use optimization techniques to aid in the design and sizing stage, achieving solutions that minimize its cost and environmental and social impacts. In pedestrian bridges, which are subjected to human-induced vibrations, it is also important to ensure...

Unplanned chases made in structural masonry for the passage of pipes can compromise the overall strength of the structure. This interference does not have clearly established and uniform criteria in Brazilian and international standards for assessing the deformability and consequent safety reduction of the walls. The present study evaluates numeri...

This work presents the numerical simulation of small-scale masonry walls (1:5) with chases using the Lattice Discrete Element Method (LDEM). Experimental compression tests were originally developed using small-scale masonry walls with chase depth of 20, 30, and 50% of its thickness, with those cuts being located at their central part. To conduct th...

This paper presents a variant of the Harmony Search Algorithm (HS) and its application to discrete optimization. The main proposed modifications regarding original HS are related to stopping criterion and reinitialization of population, called Harmony Memory. In order to investigate the efficiency of the algorithm, it was applied for obtaining opti...

Purpose Trusses constitute a fertile field to demonstrate the application of optimization techniques because of the possibility of several different configurations. Using such techniques allows the search for designs that minimize the use of material to safely comply with the imposed loads. Truss optimization can be classified into three categories...

In the development of structural designs, in general, designers avoid varying the size of structural elements, seeking to group them as much as possible. These groupings produce aesthetic effects and facilitate formwork design for reinforced concrete frames, checks, and implementation. Therefore, the elements are pre-grouped into a smaller number o...

The aim of this work is to present a procedure developed in order to minimize the cost of reinforced concrete building frames. To achieve this objective the cross sections dimensions, the area of steel and the concrete strength of beams and columns were taken as design variables. The constraints related to dimensions and strength were based on the...

In addition to the exhaustion of natural resources and the generation of greenhouse gases, both concrete and steel production consume water and energy and cause indirect impacts, e.g., from carbon dioxide emissions during the transportation. The aim of this work is to present a study developed in order to optimize the environmental cost of reinforc...

In addition to economic gains, the use of optimization strategies in the development of a structural design can reduce the consumption of materials whose extraction, manufacture and transport cause large environmental damage, as occurs with reinforced concrete inputs. The aim of the present study was to optimize the monetary and environmental costs...

Em função da grande diversidade de configurações possíveis, as treliças constituem um campo bastante fértil ao emprego de técnicas de otimização. Com o uso dessas técnicas, busca‐se quantificar o mínimo material necessário para que a estrutura suporte o carregamento atuante com a devida segurança. Os problemas de otimização de treliças são classifi...

Despite the advent of commercial software programs, which automate several design stages, the initial sizing of structural elements requires an engineer’s direct and intellectual work, and the solution found is very unlikely to be the best among the several options compliant with safety and usage requirements. Nevertheless, by using optimization st...

The aim of the present paper is to show the application of optimization strategies for the cost of beams in reinforced concrete buildings and to propose pre-sizing parameters. In order for these goals to be met, an optimization software program was developed. The program combines the analysis of structures by the grid model, reinforced concrete siz...

O processo de dimensionamento estrutural é um processo iterativo, onde o projetista estima as características de sua estrutura para, a partir disso, verificar se a mesma atende à critérios de estabilidade e conforto. Isso torna o sucesso do projeto fundamentalmente dependente da experiência e intuição do engenheiro calculista. Para tornar esse proc...

This work presents the development and implementation of a mathematical formulation for obtaining optimal sections of reinforced concrete columns subjected to uniaxial flexural compression. In order to minimize the cost of the reinforced concrete columns, the amount and diameters of the reinforcement bars and the dimensions of the columns cross sec...

The search for a design that meets both performance and safety, with minimal cost and lesser environmental impact was always the goal of structural engineers. In general, the design of conventional reinforced concrete structures is an iterative process based on rules of thumb established from the personal experience and intuition of the designer. H...

Em função da grande diversidade de configurações possíveis, seja para superar um determinado vão, seja para resistir a um determinado carregamento, as treliças constituem um campo bastante fértil ao emprego de técnicas de otimização. Com o emprego dessas técnicas, busca-se quantificar o mínimo de material necessário para que a estrutura suporte um...

No projeto estrutural convencional, o cálculo é realizado através de um processo de tentativa e erro. Através da otimização estrutural, a melhor solução para um projeto é obtida através de um processo sistemático de busca, onde se estabelece um modelo matemático para descrever o problema, sendo definidos o objetivo a ser alcançado, os parâmetros de...