【摘要】 通过预应力锚索张拉过程中对冷缝位置处新旧混凝土应力应变值测读,比较每个测试位置两个测试点的应变和应力变化情况,分析箱梁冷缝处新旧混凝土的共同工作、协调变形能力,并用数理统计软件SPSS分析同区域两个测点的应变相关性,两者对比,以此判断冷缝处新旧混凝土协调变形能力。更多还原

【Abstract】 To measure the stress and strain at the position of the cold joint between the new and old concrete by the pre-stressed anchor cable tensioning process,compare the strain and stress changes of two test points in each test position,analyze the interacting behavior and coordinated deformation ability of the new and old concrete in the cold joint of the box girder,and use SPSS,the mathematical statistics software to analyze the strain dependence of the two measurement points in the same area,on the basis of the comparison,judging the coordinated deformation ability of new and old concrete in cold joints.更多还原