鱼洞长江大桥设计咨询

The Designing and Consultation of Yudong Yangtze River Bridge

介绍了鱼洞长江大桥主桥(145.32+2×260+145.32)m四跨预应力混凝土连续刚构桥的设计咨询情况,依据新公路桥规对上部结构进行了验算,计算表明,梁部的抗裂验算不满足新桥规的要求,设计采用了咨询意见对梁部尺寸及预应力进行修改;最后,对墩梁固结部位进行了空间实体应力分析,表明该部位满足使用要求。

This paper introduces the designing and consultation of the main bridge （ 145.32 m ＋ 2 × 260 m ＋ 145.32 m） of Yudong Yangtze river bridge, a four-span prestressed concrete continuous rigid frame bridge. According to the old and new codes for highway bridge, the superstructure has been checked. The result reveals that the cracking checking does not meet the requirements of new code, so the designer accepts the consulting advice and corrects the sizes of girder and the layout of tendons. And the stress analysis at the consolidation site between the pier and the girder proves the reasonability of such de- sign.