连续梁预应力部分施工中的关键工序研究

连续梁桥是中等跨径桥梁中常用的一种桥梁结构,预应力混凝土连续梁桥是其主要结构形式,它具有接缝少、刚度好、行车平顺舒适等优点,其中,预应力是连续梁施工的重点和难点。以新建太中银铁路跨石中高速公路特大桥连续梁施工为例,对影响预应力部分施工的关键要素进行简要阐述。

Study of Critical Procedure in Pre-stressing Construction of Continuous Beam

The continuous beam bridge is a common structure of medium-span bridge.The prestressed concrete continuous beam bridge is its main structure form.It has the advantages of fewer joints,good stiffness,driving smoothness and comfort,in which the prestressing is important and difficult in the construction of continuous beam.Taking the construction of continuous girder of the over-long bridge for the newly built Taizhongyin Railway spanning Shizhong Expressway as an example,the article briefly sets forth the key elements to affect the pre-stressing construction.