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分析了施工方法对大曲率桥梁应力和变形方面的影响,对利用梁格模型预测施工方法的准确性进行了分析。研究包括施工过程中的应力和变形分析,并将其与梁格模型预测的结果对比。研究结果表明:1)在梁安装过程中会产生翘曲应力;2)在梁安装过程中改进梁格模型的预测数值会比经典梁格模型的预测更为准确;3)当梁由外向内安装时,梁格模型预测的变形要小于梁从内向外安装时的数值。
The influence of construction method on the stress and deformation of large curvature bridge is analyzed. The accuracy of prediction of construction method by using beam lattice model is analyzed. The study includes stress and deformation analysis during construction and compares it with the results predicted by the beam model. The results show that: 1) Warping stress will occur in the process of beam installation; 2) Prediction values of improved beam model during beam installation will be more accurate than those predicted by classical beam model; 3) When installed, the beam lattice model predicts less deformation than when the beam is installed from the inside out.