后张法预制预应力混凝土梁施工的几点经验教训

EXPERIENCES ON CONSTRUCTION OF POSTTENSIONING PRECAST PC BEAMS

本文分析某公路桥现场预制ＰＣ梁出现大面积空洞的教训，提出采用后张法预制ＰＣ梁的相应措施，并在昆曲高速公路上应用，取得良好效果。

The paper analyzes the failure of precasting the PC beams in situ for a certain highway bridge, and proposes the corresponding measures for the construction of the posttensioning precast PC beams. These measures were applied on the KunmingQujing expressway, and good result had been obtained.