Journal
ENGINEERING STRUCTURES
Volume 33, Issue 7, Pages 2110-2119Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.engstruct.2011.02.040
Keywords
Composite beam; Adhesive bonded; Structural optimization; Reliability; Uncertainty
Categories
Funding
- Natural Science Foundation of China [51008248]
- Natural Science Basic Research Plan in Shaanxi Province of China [2010JQ1008]
- NPU Foundation for Fundamental Research [JC200936]
Ask authors/readers for more resources
It is meaningful to account for various uncertainties in the optimization design of the adhesive bonded steel-concrete composite beam. Based on the definition of the mixed reliability index for structural safety evaluation with probabilistic and non-probabilistic uncertainties, the reliability-based optimization incorporating such mixed reliability constraints are mathematically formulated as a nested problem. The performance measure approach is employed to improve the convergence and the stability in solving the inner-loop. Moreover, the double-loop optimization problem is transformed into a series of approximate deterministic problems by incorporating the sequential approximate programming and the iteration scheme, which greatly reduces the burdensome computation workloads in seeking the optimal design. The validity of the proposed formulation as well as the efficiency of the presented numerical techniques is demonstrated by a mathematical example. Finally, reliability-based optimization designs of a single span adhesive bonded steel-concrete composite beam with different loading cases are achieved through integrating the present systematic method, the finite element analysis and the optimization package. (C) 2011 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available