【摘 要】
：
介绍了广州经济技术开发区墩头涌桥部分预应力低高度简支结合梁的试验成果、试验工作，包括：预制梁施加预应力阶段的孔道摩阻力及上拱度的测定，灌注桥面以后挠度的应变变化以及结
【机 构】
：
广州经济技术开发区建筑工程质量监督站, 铁道部大桥局桥研所
论文部分内容阅读
介绍了广州经济技术开发区墩头涌桥部分预应力低高度简支结合梁的试验成果、试验工作，包括：预制梁施加预应力阶段的孔道摩阻力及上拱度的测定，灌注桥面以后挠度的应变变化以及结合作用开始后用２点加载测定消压弯矩及抗裂荷载；直到设计极限荷载后，测定各级荷载下的挠度及裂缝开展情况，最后卸载到０，观测挠度恢复及裂缝闭合情况，最后提出了分析和结论。
This paper introduces the experimental results and experimental work of some prestressed low-height simple-supported composite girders at Pier Pier in Guangzhou Economic and Technical Development Zone, including the determination of pore friction and camber of the prestressed beams during the prestressing stage, Deflection bending moment and crack load were measured by two-point loading after the beginning of the joint deformation. The deflection and crack initiation under each load were measured after the ultimate load was designed. Finally, Crack closure situation, the final analysis and conclusions.
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