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首页> 外文会议>International Conference on Intelligent Transportation, Big Data and Smart City >Study on Fatigue Resistance Parameters Design of Orthotropic Steel Bridge Deck Based on Response Surface Method
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Study on Fatigue Resistance Parameters Design of Orthotropic Steel Bridge Deck Based on Response Surface Method

机译：基于响应面法的正交异性钢桥面板抗疲劳参数设计研究

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The structure of orthotropic steel bridge deck is complex, and the fatigue problem is easy to occur under the cyclic action of traffic loads. In order to optimize the fatigue resistance performance, taking the main girder of a cable stayed bridge, the response surface method is used to establish the approximate response surface model of stress amplitude of multi-position and the self-weight response surface model. According to response surface models, the multi-objective optimization problem is transformed into a single-objective optimization problem by weight method, and the optimal solutions of parameters under different weights are found. The results show that the response surface model simulated by the response surface method has a high degree of fitting with the results of the finite element method. It can be used as the basis for parameter optimization. The optimal solution for the parameters at the weight method can meet the purpose of reducing the self-weight and the internal stress of the structure well.
机译：正交异性钢桥面结构复杂，在交通荷载的循环作用下容易发生疲劳问题。为了优化抗疲劳性能，以斜拉桥的主梁为基础，采用响应面法建立了多位置应力幅值的近似响应面模型和自重响应面模型。根据响应面模型，通过权重法将多目标优化问题转化为单目标优化问题，得到了不同权重下参数的最优解。结果表明，响应面法模拟的响应面模型与有限元法的结果具有较高的拟合度。它可以用作参数优化的基础。权重法中参数的最优解可以达到降低结构自重和内部应力的目的。

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