波形腹板箱梁的扭转与畸变分析及试验研究

Analysis and Experimental Study of Torsion and Distortion of Box Girder with Corrugated Steel Webs

以箱梁理论为基础,对波形钢腹板箱梁的扭转和畸变效应进行了分析,提出了该种箱梁结构约束扭转计算方法和畸变计算模式。2根模型试验梁的静载试验结果表明,在波形钢腹板箱梁的设计计算中,约束扭转翘曲正应力采用A.A乌曼斯基理论,畸变采用弹性地基梁法,二者叠加所得的翘曲正应力能够满足工程精度的要求。

Based on the theory of box girder, the torsion and distortion effect of box girder with corrugated steel webs are analyzed, and the calculation method for the restrained torsion and calculation mode for the distortion of the girder are provided. The results from static tests of two model girders indicate that in the design calculation of the box girder with corrugated steel webs, by using the Second Theory of A. A. Umanskii for the positive warping stress of the restrained torsion, and by the method of B.E.F. analogy for the distortion, the warping stress obtained through superimposing of both of the two kinds of calculations can well satisfy the need of engineering precision.