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工程力学  2014 

基于分片响应面的钢筋混凝土梁变形随机模拟

DOI: 10.6052/j.issn.1000-4750.2013.05.0497, PP. 170-174

Keywords: 钢筋混凝土,随机变形,分片响应面,蒙特卡洛方法,非线性

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Abstract:

将响应面与蒙特卡洛方法结合,可降低随机模拟的计算代价。但当钢筋混凝土梁所受荷载接近开裂荷载时,梁体的变形响应面形状将出现不光滑的现象。采用传统的单一响应面方法来描述结构响应将与实际产生明显的偏差。采用改进的分片响应面技术结合蒙特卡洛方法,建立了钢筋混凝土梁变形随机分析模型。以钢筋混凝土试验梁作为算例,讨论了分片参数的合理取值,并验证了方法的正确性。

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