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| Study on approximate functions and sample selection of response surface method for parameters identification of long-span bridges |
| Received:August 28, 2010 Revised:October 29, 2011 |
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| DOI：10.7511/jslx20123003 |
| KeyWord:response surface method quadratic polynomial function radial basis function sample |
| Author | Institution |
| 周林仁 |
大连理工大学 土木工程学院, 大连 |
| 欧进萍 |
大连理工大学 土木工程学院, 大连 |
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| Abstract: |
| The modeling and sample selection of response surface method (RSM) are investigated in this study by using numerical simulation based on the 3D Finite Element model of a laboratorial bridge model.The implicit expression and complicated relationship between design parameters and dynamic characteristics are selected to establish the response surface model.RSMs with different approximate functions of radial basis function (RBF) and full quadratic polynomial are discussed,and several methods of design of experiment (DOE) are investigated to study the sample selection for RSM modeling.The comparative analysis indicates that RSMs based on RBFs are better than the quadratic polynomial model.Methods of response surface design are better than the conventional experimental design methods,and the optimal method of DOE discussed above is central composite design |