谈南梁沟大桥箱梁正弯矩张拉控制要点

Discussion on tensioning control of positive moments for box girder of Nanlianggou Bridge

针对箱梁正弯矩钢绞线张拉施工中的关键工序,从原材料、张拉机具、张拉操作工序及注意事项等几方面进行了简要阐述,进而总结出箱梁正弯矩张拉控制要点,以保证混凝土箱梁施工质量。

According to the key procedure of the tensioning construction of positive moment steel strands of box girder,the paper illustrates from the raw materials,the tensioning mechanism,the tensioning operation and precautions,and sums up the controlling points for the positive moments for box girder,so as to ensure the construction quality of concrete box girder.