钱塘江第四大桥拱肋钢锚箱受力分析

Mechanical Analysis of Steel Anchor Boxes of Arch Trusses in the Fourth Qiantangjiang Bridge

吊杆和拱肋之间的锚固区是把桥面荷载传给拱肋的关键部位,由于锚固区构造复杂,承受较大的局部荷载,故建立锚固区的实体模型进行有限元分析,得到了锚固区局部的应力,并对钢锚箱与钢管拱肋的连接部位的焊缝进行了疲劳强度的验算。

Anchorage zone between sag rods and arch ribs is the key structure in transferring decks loads to the arch ribs. For its complex configuration and large local loads, the local stresses of anchorage zone are calculated by finite element solid model and the fatigue strength of welded seams which connected steel anchor box and arch ribs is also checked.