调整张拉槽口确保箱梁负弯矩钢束准确定位施工

On accurate positioning construction of prestressed steel of negative bending moment by adjusting tensioning notch

针对先简支后连续箱梁结构存在的不足之处,提出了调整张拉槽口确保箱梁负弯矩钢束准确定位的施工方法,结合该方法的工艺原理,详细介绍了该工法的施工工艺流程及各施工环节需注意的事项,并指出其可提高负弯矩的施工质量,延长桥梁的使用寿命。

According to some defects in the simply supported-to-continuous beam structure, the paper points out the construction methods for ensuring the accurate positioning construction of prestressed steel of negative bending moment by adjusting tensioning notch, mainly introduces the construction craft procedure of the construction methods and its precautions in the construction steps by combining with its craft principle, and points out it can promote the construction quality of the negative bending moment and prolong the lifespan of bridges.