少筋混凝土肋腋板组合梁桥的试建

A Trial Compound-Beamed Bridge with under-Reinforced Concrete Ribbed Slabs

本文简述少筋混凝土肋腋板组合梁桥的设计与试验概况。通过静载试验得到的横向分布系数、主梁挠度和钢筋应力,均与计算值基本符合,表明所采用的翼缘分布宽度及横向分布系数是合理的,也表明主梁和肋腋板组合的整体性能良好。由于肋腋板跨径较大,这种桥型因可减少主梁片数而对宽桥更为适用。

The design and testing of a compound-beamed bridge with under-reinforced concrete ribbed slabs are briefly presented in this paper. The load distribution coefficient, the deflection of main beam the reinforcement stress of the bridge obtained from the static loading tests agree basically with the calculated results from which the reasonableness of the calculated flange width and the load distri bution coefficient adopted in the design as well as the good integrality between the main beam and the ribbed slab have been proved. Owing to the realization of its longer span, this kind of ribbed slabs can be more suitable to wide bridge in reducing the number of main beams.