基于辅助轨道的多支点转体箱梁模型试验研究

MODEL TEST RESEARCH OF MULTI-FULCRUM PIVOT BOX GIRDER BASED ON AUXILIARY

为研究基于辅助轨道的多支点转体箱梁在转体过程中的受力状态和转体方案的可行性,应用结构模型相似理论,以应力等效为原则设计制作了连续钢箱梁转体结构试验模型。试验结果表明,梁体转动状态下的挠度、应力与相应理论值的平均误差均在10%以内,试验模型能用于分析和评估施工方案的可行性。

This thesis is to study the structural stress state and the feasibility of the swivel scheme of the swivel box girder.Based on the similarity theory of structural model and the principle of stress equivalent,a test model of continuous box-girder rotating structure was designed and manufactured.The deflection,stress,and beam stress in the rotating state are compared with the theoretical value,and the average error is within 10%,which test model can be used to analyze and evaluate the feasibility of the construction plan.