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为研究不等跨连续梁桥加载技术,以陕西某3跨连续梁为依托,建立了有限元理论分析模型,提出了该连续梁各控制截面的加载方案,在此基础上提出3种不同的墩顶负弯矩截面加载方案,通过验算加载车位置处截面和跨中截面加载效率,确保加载方案的安全性,同时提出将墩顶截面负弯矩和跨中正弯矩的加载工况合并的加载方案,节省加载时间和费用。该结论为中、边跨跨径差距较大的不等跨连续梁桥静力荷载试验加载技术提供参考。
In order to study the loading technology of unequal span continuous girder bridge, a finite element theoretical analysis model was established based on a 3-span continuous beam in Shaanxi Province. The loading scheme of each control section of the continuous girder was proposed. Based on this, three different Through the verification of the loading efficiency of the cross-section and cross-section of the loading vehicle at the top of pier, the safety of the loading scheme can be ensured. At the same time, it is proposed to combine the loading conditions of the negative moment at the pier top and the mid- Load the program to save load time and expense. This conclusion provides a reference for the loading technology of static load test for unequal span continuous girder bridges with large span difference between the two sides.