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通过对预应力混凝土简支箱梁徐变影响因素及控制措施进行研究分析,在新建张呼客运专线制梁场生产的预应力混凝土简支箱梁在施工过程中对混凝土原材料、配合比、搅拌灌注、养护等施工进行全面的过程控制,确保了的混凝土预应力简支箱梁徐变在规范要求之内,从而使得张呼铁路预应力混凝土整孔简支箱梁具有良好的抗弯、抗扭刚度与整体性,满足了列车高速运行时的安全性、旅客乘坐的舒适性和轨道长期运营状态下的平顺性的要求。
Through the research and analysis on the influencing factors and control measures of the prestressed concrete simple box girder creep, the prestressed concrete simple box girder produced in the newly built beam-forming field of the Zhang-hu passenger special line is used to analyze the concrete raw materials, mix proportion, Filling, curing and other construction process to conduct a comprehensive process control to ensure that the prestressed concrete box girder prestressed concrete creep within the specifications, so that the prestressed concrete Zhangzhu Railway simply supported box girder has a good bending, anti- Torsion stiffness and integrity to meet the high-speed train safety, passenger comfort and long-term orbit under the operating conditions of the smooth requirements.