无应力索长与温度应变精准控制钢拱合拢

Controlling Closure of Steel Arch by Unstressed Cable Length

无应力索长控制索力,是当下斜拉桥梁段拼装广泛应用的索力监控方法。针对此文章所阐述的中承式系杆拱桥,利用无应力索长控制方法结合温度应变,很好地解决了接近300米中拱在整体提升前临时拉索索力确定问题。

Today,Controlling cable force by the unstressed cable length is widely used in cable-stayed bridge girder cable force monitoring method.For the tied arch bridge in this article,we solved the troubles of determining how much cable force in integral lifting the overall arch conveniently,by the method of above.