混凝土改用定型钢模板以后,不但节约了大量的木材,也给支模带米了很大方便。但美中不足的是,由于钢模板四角方正,而又有一定的厚度,因此,给拆模带来了困难。尤其在拆第一块模板时,更为明显。见图1。拆除中间模板时,如由B端拆除,模板必以A点为中心,B点必沿以AB为半径的弧线脱模, After the concrete has been changed into a template, it not only saves a large amount of wood, but also provides a great convenience for the mold. However, in the ointment, due to the squareness of the steel formwork and the fact that it has a certain thickness, it is difficult to remove the mold. This is especially noticeable when the first template is removed. see picture 1. When dismantling the intermediate template, if it is removed from the B end, the template must be centered on point A, and point B must be demolded along the arc with AB radius.