Performance-based multiobjective optimum design of steel structures considering life-cycle cost

Fragiadakis, Michalis; Lagaros, Nikos D.; Papadrakakis, Manolis

doi:10.1007/s00158-006-0009-y

Cited by 115 publications

(56 citation statements)

References 19 publications

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“…Usually, the total weight of the frame is considered directly proportional to the total construction cost and thus it is the most common choice to be used for the objective function. However, in earthquake engineering practice the term 'optimum' might have a broader meaning including both the direct construction cost and also the future maintenance and damage costs, usually referred as 'life-cycle cost' (see, for example, [18][19][20]). In the methodology proposed, only the direct cost is taken into consideration, while the 'life-cycle cost' of RC structures can be included if the tools presented in the remainder of the paper are appropriately modified.…”

Section: Objective Functionmentioning

confidence: 99%

Performance‐based optimum seismic design of reinforced concrete structures

Fragiadakis

Papadrakakis

2008

Earthq Engng Struct Dyn

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SUMMARYA fully automated design methodology based on nonlinear response history analysis is proposed for the optimum seismic design of reinforced concrete (RC) structures. The conventional trial-and-error process is replaced by a structural optimization algorithm that serves as a search engine capable of locating the most efficient design in terms of cost and performance. Two variations of the proposed design methodology are introduced. The first approach treats the optimum design problem in a deterministic manner, while in the second variation the optimum design is sought in the framework of a reliability-based optimization problem. The reliability-based approach seems to be a more rational procedure since more meaningful design criteria that correlate better with the performance-based design concept can be adopted. Thus, the practice of using the mean annual frequency of a limit-state being exceeded to assess the candidate designs is compared with the use of deterministic criteria. Both formulations take into consideration the structural response for a number of limit-states, from serviceability to collapse prevention. The proposed design procedure is specifically tailored to the design of RC structures, where a preliminary design step of generating tables of concrete sections is introduced. In order to handle the large size of the tables, the concept of multi-database cascade optimization is implemented. The final design has to comply with the provisions of European design codes. The proposed methodology allows for a significant reduction of the direct construction cost combined with improved control of the seismic performance under earthquake loading.

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Section: Objective Functionmentioning

confidence: 99%

Performance‐based optimum seismic design of reinforced concrete structures

Fragiadakis

Papadrakakis

2008

Earthq Engng Struct Dyn

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“…Such problems include the sizing of individual members (sizing optimization problems), the selection of the most efficient placing of structural members (topology optimization) or a combination of both in order to achieve a single or multiple goals at the same time (multiobjective optimization). The existing literature is rich of papers proposing and applying optimization algorithms in structural problems [62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77][78].…”

Section: Application On Structural Optimizationmentioning

confidence: 99%

Assessment of the Effectiveness of Cabling System Configuration in Retrofitting Steel-Concrete Composite Buildings

Papavasileiou¹

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…A structural optimization design method based on cost-effectiveness criteria with consideration of seismic performance has been widely applied in the design of steel structures [3][4][5][6][7] and reinforced concrete structures [8][9][10]. In addition, the optimal design method of steel-concrete composite elements and structures has been studied by some researchers [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Researching a Fuzzy- and Performance-Based Optimization Method for the Life-Cycle Cost of SRHPC Frame Structures

et al. 2017

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Abstract:In order to solve two problems with the traditional optimization method of steel reinforced high strength high performance concrete (SRHPC) frame structures, a fuzzy mathematics and performance-based optimization method for the life-cycle cost of SRHPC frame structures is proposed. In the optimization program, quantitative seismic performance indicators of SRHPC frame structures are determined according to the experimental results of SRHPC columns. Furthermore, by considering the fuzzy reliability of structures under each performance level, the life-cycle optimization model of SRHPC frame structures can be established. In order to solve the problem of too many variables and constraints in the optimization process, a two-step optimization method is proposed. Finally, an optimization example is carried out through the MATLAB program to demonstrate the feasibility of this model.

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Performance-based multiobjective optimum design of steel structures considering life-cycle cost

Cited by 115 publications

References 19 publications

Performance‐based optimum seismic design of reinforced concrete structures

Performance‐based optimum seismic design of reinforced concrete structures

Assessment of the Effectiveness of Cabling System Configuration in Retrofitting Steel-Concrete Composite Buildings

Researching a Fuzzy- and Performance-Based Optimization Method for the Life-Cycle Cost of SRHPC Frame Structures

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