苏通大桥辅桥268m连续刚构桥预应力施工

Construction of Prestressing of 268-m Span Continuous Rigid-Frame Structure of Auxiliary Bridge of Sutong Bridge

对于预应力混凝土桥梁,预应力施工质量控制尤其重要,关系到结构安全和结构的耐久性。介绍苏通大桥辅桥纵向预应力的施工质量控制,对孔道的成孔定位、预应力张拉和孔道压浆等关键施工工序进行了较详细的描述,为今后同类桥梁的预应力施工提供借鉴。

For a prestressed concrete bridge, the quality control of prestressing construction is particularly important and is even of vital importance to the safety and durability of the structure. In this paper, the quality control of the longitudinal prestressing construction of the auxiliary bridge of Sutong Bridge is introduced and the key construction procedures of the prestressing duct positioning, prestress jacking and prestressing duct grouting thereof are presented in considerable details for reference to the construction of prestressing of similar bridges in the future.