摘要
在预应力混凝土斜拉桥的施工过程中对主梁线形与结构内力的控制非常重要。提出一种自适应施工控制分析方法。其中用改进刚性支承连续梁方法分析合理成桥状态,用正装迭代法分析合理施工状态,用基于最小二乘法的参数复核识别算法进行参数估计,用带残差修正的灰色预测模型进行参数预测。通过算例分析表明,提出的施工控制分析方法可行且结果合理。
The control of girder geometry and internal forces is very important in the construction of pre-stressed concrete cable-stayed bridges. A self-adaptive construction control analysis method is proposed. The ameliorated continuous rigid-support beam method is proposed to analyze rational completed state. The forward-iteration method is utilized to analyze the rational construction state. The parameter check-identification method based on the least squares method is proposed for parameter identification. The grey forecast model with error correction is used to forecast parameters. The analysis result of a symmetric cable-stayed bridge shows that the self-adaptive construction control analysis method is feasible and reasonable.
出处
《工程力学》
EI
CSCD
北大核心
2006年第2期78-83,共6页
Engineering Mechanics
基金
国家自然科学基金(50448016)资助项目
关键词
预应力混凝土斜拉桥
施工控制
最小二乘法
改进刚性支承连续粱法
参数复核识别算法
灰色预测模型
pre-stressed concrete cable-stayed bridge
construction control
least squares method
ameliorated continuous rigid-support beam method
parameter check-identification method
grey forecast model
