| 考虑温度效应的简支梁桥损伤识别方法研究 |
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| 引用本文： | 田庆斌.考虑温度效应的简支梁桥损伤识别方法研究[J].辽宁交通科技,2014(8):4-6. |
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| 作者姓名： | 田庆斌 |
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| 作者单位： | 济南市公路管理局,济南市250013 |
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| 摘 要： | 基于模态频率的损伤识别方法得到了广泛的应用,而温度往往会掩盖桥梁损伤造成的模态参数变化.通过建立简支梁有限元模型,改变混凝土弹性模量进行模态分析,得出了温度和损伤作用下的简支梁模态频率.结合BP神经网络,对温度影响下的简支梁桥损伤进行了有效识别.
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| 关 键 词： | 温度效应 模态频率 BP神经网络 损伤识别 |
Damage Identification for Simply-supported Bridge Considering Temperature Effect |
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| TIAN Qing-bin.Damage Identification for Simply-supported Bridge Considering Temperature Effect[J].Liaoning Communication Science and Technology,2014(8):4-6. |
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| Authors: | TIAN Qing-bin |
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| Institution: | TIAN Qing-bin |
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| Abstract: | The damage identification method based on modal frequency has been widely used, but temperature often hides the change of modal frequency caused by bridge damage. In this paper, the finite element model of simply supported beam is established and is analyzed with different elastic modulus of concrete to get the modal frequency under temperature and damage condition. The damage identification of simply supported beam bridge under temperature influence is effectively identified with BP neural network. |
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| Keywords: | Temperature effect Modal frequency BP neural network Damage identification |
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