黔灵大桥连续刚构结构设计相关问题探讨与对策措施

Discussion on Relative Issues in Design of Continuous Rigid Frame Structure of Qianling Bridge

大跨径预应力混凝土连续刚构桥在公路和城市桥梁中被广泛采用,但在运营过程中经常出现跨中挠度过大、腹板开裂等病害。该文结合新旧桥规,在黔灵大桥设计中对主桥构造尺寸及腹板应力控制进行了探讨。

The long-span prestressed concrete continuous rigid frame bridge is widely used in the highway and urban bridges.However,the diseases of too large deflection and the cracking web often appear in the course of operations.Combined with the old and new bridge specifications,the article discusses the structural dimension of the main bridge and the stress control of web in the design of Qianling Bridge.