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五河淮河大桥系××公路上的一座重要桥梁,全长1031.26米,主孔为90米预应力混凝土T型刚构,两边岸孔和主桥挂孔均为30米预应力混凝土T型简支梁,设计载重:汽车—15、挂车—80。桥面净空为净—9+2×1.5米人行道。全桥共有预应力简支梁24孔120片。为了验证单片T梁的实际承载能力,检验梁的设计强度、刚度和抗裂性能;收集和统计后张法预应力施工工艺中的一些设计参数,发现设计计算中存在的问题,我院与安徽省07403工程指挥部合作,于1977年3至6月在五河淮河大桥工地,抽样6片,进行了单片T梁的预施应力阶段和静载试验(加至设计荷载),测定跨中断面的应变和挠度等数据,现将试验结果作一简略报导。
Wuhe Huaihe River Bridge × × Highway on an important bridge, a total length of 1031.26 meters, the main hole is 90 meters of prestressed concrete T-rigid frame, both sides of the main hole and the main hole are 30 meters of prestressed concrete T-Jane Beam, design load: car -15, trailer -80. The deck clearance is net -9 +2 × 1.5 meters sidewalk. The bridge has a total of 120 prestressed simply supported beams 24 holes. In order to verify the actual carrying capacity of single T-beams, test the design strength, stiffness and crack resistance of the beams; collect and collect some design parameters in the post-tensioning prestressing construction process and find the problems in the design and calculation, Anhui Province 07403 engineering headquarters, from March to June 1977 at the Wuhe Huaihe River Bridge site, sampling 6, the prestressed stress T stage and static load test (added to the design load), measured cross Fracture surface strain and deflection data, the test results will now be a brief report.