建设部在建筑行业推广应用的十项新技术的第三项为“高效钢筋和预应力混凝土技术” ,其中首先要推广的高效钢筋为新Ⅲ级钢筋。本文结合实践做些技术经济分析。用高效钢筋代替普通混凝土结构中的Ⅰ级、Ⅱ级钢是建筑业技术进步工作的重要方面 ,具有重要的经济效益和社会效益。新 Ministry of Construction in the construction industry to promote the application of the ten new technologies, the third is “efficient steel and prestressed concrete technology”, of which the first to promote the efficient steel reinforcement for the new grade Ⅲ. This article combines practice to do some technical and economic analysis. It is an important aspect of the technical progress of the construction industry to replace Grade I and Grade II steel in ordinary concrete structures with efficient steel bars, which has important economic and social benefits. new