钢筋混凝土基础预制桩在施工中,由于桩体较长,常常需要采用接桩工艺。制桩时在桩顶端预留螺旋孔需要较多数量的模具,而模具用钢的材料较缺,价钱也比较贵,我单位根据现场施工的具体情况,在保证质量的前提下,把原实心钢模改为空心钢模,具体做法如下: In the construction of reinforced concrete foundation prefabricated piles, due to the long piles, it is often necessary to adopt a pile-joining process. When the pile is piled, the spiral hole at the top of the pile requires a large number of molds. However, the material of the steel used for the mold is relatively low and the price is relatively expensive. According to the specific conditions of on-site construction, the unit will be based on the premise of ensuring the quality. The steel mold is changed to a hollow steel mold. The specific method is as follows: