在后张梁施工中 ,当采用波纹管作预应力管道时 ,常将预应力筋在波纹管定位后就穿入波纹管 ,这样做不仅能保证预应力筋的线形顺畅 ,还可避免在浇筑混凝土后穿管时出现由于管道不顺而使预应力筋不易穿入的情况。但在施工中 ,因波纹管材质不好或操作不当导致波纹管破裂 ,浇筑混凝 In the post-beam construction, when the corrugated pipe is used as prestressed pipe, the prestressed tendon is often penetrated into the corrugated pipe after the corrugated pipe is positioned. In this way, not only the linear shape of the prestressed tendon can be ensured, After the concrete pipe when the pipe is not smooth and prestress tendons not penetrate the situation. However, in the construction, due to the poor quality of the bellows or improper operation of the bellows rupture, pouring coagulation