部分予应力混凝土的研究和应用在国外已有近四十年历史,1942年英同Abeles提出在使用荷载下混凝土容许出现拉应力或细微裂缝的所谓“部分”予应力混凝土,并修建了铁路桥。1954年在英国召开的纪念Freyssint首创予应力的会议上,确定了对部分予应力的推广,1959年英国的“实施法规”纳入了在混凝土中容许出现少量拉应力的条款。1961年日本横道英雄为改善钢筋混凝土的性能,其中引入少量的予应力筋,以满足必要的裂缝控制条 The research and application of some of the prestressed concrete have been in foreign countries for nearly 40 years. In 1942, British-Abeles proposed so-called “partial” prestressed concrete that allows tensile stress or fine cracks under the use of concrete, and built a railway bridge. . In 1954 in Britain, the conference to commemorate Freyssint’s first creation of stress determined the promotion of partial stress. In 1959, Britain’s “implementation regulations” included clauses permitting a small amount of tensile stress in concrete. In 1961, the Hero of Japan’s Crossroads improved the performance of reinforced concrete by introducing a small amount of prestressing ribs to meet the necessary crack control strips.