时速200km/h铁路32m预应力混凝土简支T梁下拱成因分析

通过对结构形式为预应力混凝土32m简支T梁的两座大桥的5片质疑梁进行动、静载试验,并对所检测的梁下拱(挠)现象的理论分析,研究和分析了运营线上此类梁出现下拱(挠)现象的原因。为分析类似的梁桥的梁产生下拱(挠)现象提供了一套比较完整的研究分析过程,具有一定的实际及理论参考价值。

Genetic Mechanism Analysis of the Coving Phenomenon of 32 m Prestressed Concrete Simple T Girder in Railway with the Speed of 200 km/h

Through the dynamic and static loading test of the 5 questioned beams from the two bridges, which are mainly composed of prestressed concrete simple T girders, and the theoretical analysis of the coving (or deflection) phenomenon of the questioned beams, this paper studies the reasons for the coving (or deflection) phenomenon of the questioned beams in the demonstration line. This paper provids a whole process of analysis for the coving (or deflection) phenomenon of such girder-bridges, so it's valuable for reference both in practice and in theory.