跨中转联器在双塔部分斜拉桥中的应用研究

双塔斜拉桥的拉索一般均是相对于主塔对称布置,在主塔设置锚头或索鞍、主梁内设置锚头进行锚固。主跨跨中为无索区,设计时一般通过在此区域布设预应力钢束来弥补这个缺陷。作者在文中提出了斜拉桥拉索跨中转联器的概念,有效的解决了双塔以上斜拉桥无索区的拉力问题,并在呼和浩特市东河跨河桥的设计中,首次采用了两塔柱最外侧拉索连续布置的方式,从而避免了无索区的存在,且大大简化了锚固构造,取得了较好的效果

Application Research of Cross Transfer Coupler in Double Tower Partial Cable-stayed Bridge

The cables of a double tower cable-stayed bridge are generally symmetrically arranged relative to the main tower, with anchor heads or cable saddles installed on the main tower and anchor heads installed inside the main beam for anchoring. The middle of the main span is a cable free zone, which is usually compensated for by placing prestressed steel tendons in this area during design. In this paper, the author puts forward the concept of cable span transfer coupler of cable stayed bridge, which effectively solves the tension problem of cable free zone of cable stayed bridge with two towers or more. In the design of Donghe River Crossing Bridge in Hohhot City, for the first time, the outermost cables of two towers are continuously arranged, thus avoiding the existence of cable free zone, greatly simplifying the anchorage structure, and achieving good results