大渡河特大桥是一座主跨1100m单跨悬索桥,其雅安岸隧道锚轴线总长度为159m,位居世界第一。主缆锚固系统由钢拉杆系统与索股锚固系统组成,钢拉杆安装于锚塞体内,安装就位后浇筑锚塞体混凝土形成主缆锚固受力结构。隧道锚单洞有钢拉杆187组,两边共374组。每组钢拉杆系统平均总长39.18m,由四根不同规格的Φ87高强钢拉杆经过转运就位后,通过止转连接器进行接长安装,形成1组钢拉杆系统。 Dadu River Bridge is a main span 1100m single span suspension bridge, the Ya’an shore tunnel anchor axis total length of 159m, ranking first in the world. The main cable anchoring system is composed of a steel tie rod system and an anchor wire system. The steel tie rod is installed in the anchor plug body, and the anchor plug concrete is poured to form an anchor cable anchoring force structure after being installed in place. Tunnel anchor hole has a steel rod 187 group, a total of 374 groups on both sides. Each group of steel trolley system has an average total length of 39.18m. It consists of four Φ87 high-strength steel tie rods of different specifications and is transported and placed in place through a rotation-stopping connector to form a set of steel tie rod system.