大跨长联V形墩连续刚构桥方案构思与总体设计

Scheme Conception and Overall Design of Long-span V-shaped Pier Continuous Rigid-frame Bridge

昌南大桥跨越赣江,主桥采用跨径组合(75+165+180+180+165+75)m的混合梁V形墩连续刚构桥,桥长840 m,双幅桥宽37.5 m。V形墩刚构桥因结构轻盈、外形美观、跨越能力较强、刚度较大、行车舒适、便于养护等特点,在城市景观桥梁建设中得以广泛应用,介绍国内主跨跨径及联长最大的混合梁V形墩刚构桥的构思、总体方案设计、桥梁结构设计和施工。

Changnan Bridge crosses Ganjiang River:Its main bridge is a composite beam V-shaped pier continuous rigid-frame bridge with the span combination of(75+165+180+180+65+75)m.The bridge is 840 m long and the double-width bridge is 37.5 m wide.The V-shaped pier rigid-frame bridge is widely used in the construction of urban landscape bridges because of its light structure,beautiful appearance,strong spanning ability,large stffness,comfortable driving and easy maintenance.The conception,overall scheme design,bridge structure design and construction of the V-shaped pier rigid-frame bridge with the largest main span and joint length in China are introduced.