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为研究弯桥预应力摩阻损失,采用实验与理论分析的方法,从规范中预应力摩阻损失公式出发,通过对实际工程进行预应力摩阻试验和试验梁的锚具变形预应力损失试验,并采用公路桥梁结构分析软件DR.Bridge,对实际工程进行了实际模拟.研究结果表明:根据所测数据推算得出的k值与规范值也存在一定的偏差,施工因素对管道偏差系数影响很大;实测值接近于根据实测推算μ值、k值所得的模型值,进一步说明实测值可靠,μ和k值能够很好的反映当前管道的摩阻及偏差状况.分析所得结论对弯桥的设计、监控、施工、养护等均有积极的意义.
In order to study the prestress friction loss of curved bridge, the prestress frictional resistance test of the actual project and the prestress loss test of the anchorage beam of the test beam were carried out by means of experimental and theoretical analysis. , And the highway bridge structural analysis software DR.Bridge was used to simulate the actual project.The results show that there is a certain deviation between the k value and the standard value deduced from the measured data and the influence of construction factors on the pipeline deviation coefficient The measured values are close to the model values calculated from the measured values of μ and k, which further indicate that the measured values are reliable and the values of μ and k can well reflect the current friction and deflection conditions of pipelines. The design, monitoring, construction, conservation, etc. have a positive meaning.