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本文笔者结合某大桥主桥系杆钢管拱施工经验,对系杆拱桥施工中临时钢横撑的应用进行了探讨,通过对该大桥主桥系杆张拉前后的变形观测,除系杆因张拉起拱度标高在设计规范容许范围内外,系杆轴线未发生任何微变,这说明钢制临时横撑在系杆张拉中起到了防止失稳的作用。同时与原设计施工方案比较,技术经济效益显著,节约了大量的支架材料,降低了架设临时支架的难度。
In this paper, the author of a bridge main bridge tied bar steel pipe arch construction experience, the construction of tied arch bridge temporary steel bracing application discussed through the main bridge tie rod deformation before and after the test, in addition to tie rod due Zhang Pull the camber elevation within the design specifications allowable, the tie rod axis did not occur any slight change, indicating that the temporary steel ties in the tie rod tension has played a role in preventing instability. At the same time compared with the original design and construction program, significant technical and economic benefits, saving a lot of scaffolds, reducing the difficulty of erecting temporary brackets.