1.前言 这里介绍的推顶法是预应力混凝土梁的架设方法之一,是由西德的雷昂哈特和鲍乌尔创造的。在预应力混凝土梁的技术领域中也和其他建设领域一样,为了使施工方便、速度加快和经济合理等付出了很大的努力,因此现 1. INTRODUCTION The ejector method introduced here is one of the methods for setting up prestressed concrete beams and was created by Lyon Hart and Boboul in West Germany. In the field of prestressed concrete beams, as in other fields of construction, great efforts have been made to facilitate the construction, speeding up and economic rationality