Recent advances in reliability-based structural optimization under earthquake loading
نویسندگان
چکیده
1. Abstract In this paper a robust and efficient methodology is presented for treating large-scale reliability-based, structural optimization problems under seismic loads using the pushover analysis method. The optimization problem is solved with the Evolution Strategies method, while the reliability analysis is carried out with the Monte Carlo simulation method. In order to reduce the excessive computational cost of the reliability-based optimization process the repeated structural analyses that are required during the Monte Carlo simulations are replaced by an efficient artificial neural network approximation scheme. 2.
منابع مشابه
TOPOLOGY OPTIMIZATION OF 2D BUILDING FRAMES UNDER ARTIFICIAL EARTHQUAKE GROUND MOTIONS USING POLYGONAL FINITE ELEMENT METHOD
In this article, topology optimization of two-dimensional (2D) building frames subjected to seismic loading is performed using the polygonal finite element method. Artificial ground motion accelerograms compatible with the design response spectrum of ASCE 7-16 are generated for the response history dynamic analysis needed in the optimization. The mean compliance of structure is minimized as a t...
متن کاملEfficient Strategies for Solving Reliability-Based Optimization Problems
Reliability-based optimization (RBO) is a powerful tool for design, as it allows to determine an optimal structural configuration while explicitly taking into account the effects of uncertainty (loading, geometry, structural parameters, etc.) on the structural performance. Nonetheless, the practical application of RBO to problems of engineering interest may be rather involved, due to the necess...
متن کاملRecent Advances and Novel Concepts for Motion Control of Bridges and Highrise Buildings under Extreme Winds and Earthquakes
In this paper, some recent advances and a few novel concepts are presented for motion control of highrise building and bridge structures under dynamic wind and earthquake loading. Recent research performed by the authors in the areas of smart structures, hybrid control, tuned liquid column damper, and wavelets is reviewed.
متن کاملMETAHEURISTIC-BASED SIZING AND TOPOLOGY OPTIMIZATION AND RELIABILITY ASSESSMENT OF SINGLE-LAYER LATTICE DOMES
Economy and safety are two important components in structural design process and stablishing a balance between them indeed results in improved structural performance specially in large-scale structures including space lattice domes. Topology optimization of geometrically nonlinear single-layer lamella, network, and geodesic lattice domes is implemented using enhanced colliding-bodies optimizati...
متن کاملRobust Design and Reliability-based Design Optimization
A large number of problems in manufacturing processes, production planning, finance and engineering design require an understanding of potential sources of variations and quantification of the effect of variations on product behavior and performance. Traditionally, in engineering problems uncertainties have been formulated only through coarse safety factors. Such methods often lead to overdesig...
متن کامل