双钢筋作为一种新型钢筋品种在我国出现以来,基于它优异的锚着能力,可不施加预应力而取用较高的设计强度,可有效地制约构件裂缝的开展,而得到了建筑业的重视。迄今已有20多个省、市、自治区开展了双钢筋构件的研究和试点应用。据不完全统计,全国已建成投入使用的各种不同型式的双钢筋楼板,总覆盖面积已超过二十万平方米,积累了较丰富的资料和经验。近年来,预应力叠合楼板的成功经验,为预制整筑楼盖开辟了新途径,突破了二十年 Double-rebar as a new type of steel bar has emerged in China. Based on its excellent anchoring ability, it can take a higher design strength without applying prestress, and can effectively restrict the development of component cracks, which has been valued by the construction industry. . So far, more than 20 provinces, municipalities and autonomous regions have carried out the research and pilot application of double steel bar components. According to incomplete statistics, various types of double-reinforced steel slabs have been built and put into use throughout the country. The total area covered has exceeded 200,000 square meters, and has accumulated a wealth of information and experience. In recent years, the successful experience of pre-stressed laminated floors has opened up new ways for prefabricated building and floor covering, which has exceeded 20 years.