40m工型后张梁侧弯原因及防治措施

The cause and measures of lateral bending of 40 m type Ⅰ-beam post-tensioned

由于40m工型后张梁横向刚度比侧向刚度小得多,在梁的制作和吊装过程中,又缺乏横向约束,因而很容易产生侧弯现象。结合西湟一级公路湟水河分离立交桥40m工型预制梁的施工实例,分析了工型后张梁产生侧弯的原因,提出了相应的防治措施。

Based on engineering example, the cause of lateral bending of 40m type Ⅰ-beam post-tensioned is analyzed and the corresponding control measures is put forward in this paper.