Optimized Design of Concrete Structures considering Environmental Aspects

Abstract

This contribution describes a formulation of the optimized design of structures using the probability-based optimization method. The Monte Carlo simulation method, modified by the Latin Hypercube Sampling (LHS) method, was used for the calculation of the reliability of a designed structure. Efficient design procedures can achieve not only cost savings during construction (materials and energy), erection, servicing, maintenance, disassembly and material recycling but also a more favourable environmental impact. To find the best possible design for a structure an original optimization method was used. Therefore, the economical and ecological aspects (acquisition costs, CO2 and SO2 emissions and embodied energy associated with concrete member production) were taken into account in the objective function. A design example – a prestressed spun concrete pole made from reinforced concrete or alternatively from reinforced fibre concrete is presented.

Chance constrained optimal beam design: Convex reformulation and probabilistic robust design

“…For the computation we used the scenario generation described earlier, which was constructed ad hoc to demonstrate the method. In a real situation (e. g., the one in [12]), the scenario generation will be swapped for the particular problem-specific outcomes.…”

“…DOI: 10.14736/kyb-2018- An important issue regarding the design is its reliability (see [12]). In the context of this paper the reliability of the design will mean that the constraints in the resulting optimization program should hold with high probability.…”

Optimization of a Tunnel Lining Reinforced with FRP

“…where C C and C S are the cost of concrete per m 3 and the cost of reinforcement per kg, respectively, and V C and W S are the volume of concrete in m 3 and the weight of reinforcement in kg used in the structure, respectively. It is possible to extend the objective function to include other aspects and evaluate the structure from the aspect of cost or the impact on the environment of the whole life cycle: see [3].…”

Probability-Based Design and Life Cycle Assessment of a Spun Concrete Pole

“… The GWP via equivalent global warming potential GWP equiv , which depends on equivalent CO 2 emissions (calculated for greenhouse gases CO 2 , CO, NO x , CH 6 and N 2 O);…”

“…The environmental aspects of the construction process phase, some types of transport and the unit costs and environmental impacts of the end of the structure´s life cycle are referred to in [6] and [7]. The assessment of the quality of a design with regard to the above-mentioned aspects can be performed in advance with the help of a criterion set -a design quality criterion (e.g.…”