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- W4376106639 abstract "Abstract In this study, the optimum design of a three-dimensional framed steel structure subjected to blast loading is considered. The main idea of this research is to develop a practical formulation for the design optimization problem and to study the effect of including blast loads in the design process. The optimization problem is formulated to minimize the total weight of the structure subjected to American Institution of Steel Construction (AISC) strength requirements and blast design displacement constraints. The design variables for beams and columns are the discrete values of the W-shapes selected from the AISC tables. A car carrying 250 lbs of Trinitrotoluene with a 50 ft standoff distance from the front face is modeled as the source of the blast loading. Pressure-time histories are calculated on the front, sides, roof, and rear faces of the structure. Since the problem functions are not differentiable with respect to the design variables, the gradient-based optimization algorithms cannot be used to solve the problem. Therefore, metaheuristic algorithms are used to solve the optimization problem. Linear and nonlinear dynamic analyses are carried out in the optimization process. The problems are solved using metaheuristic optimization with the equivalent static loads method (MOESL). In MOESL, the dynamic load is transformed into equivalent static loads (ESLs) then the linear static analysis is carried out in the optimization process. The problems are 4-bay×4-bay×3-story frames under serviceability and blast loading. It is shown that a penalty on the optimum structural weight is substantial for designing structures to withstand blast loads." @default.
- W4376106639 created "2023-05-12" @default.
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- W4376106639 date "2023-05-09" @default.
- W4376106639 modified "2023-10-01" @default.
- W4376106639 title "Optimization of Framed Structures Subjected to Blast Loading Using Equivalent Static Loads Method" @default.
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- W4376106639 doi "https://doi.org/10.21203/rs.3.rs-2890128/v1" @default.
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