十余年来,关于V形折板的研究和应用已经取得较大成绩。目前,我国已经建成的V形折板建筑约为两百万平方米,遍布全国廿几个省市自治区。 1969年春天开始在北京东方红炼油厂工程上成批采用.当年就建成预应力V形折板屋盖 Over the past decade, great achievements have been made in the research and application of V-shaped flaps. At present, China has built a V-shaped folding plate building of about 2 million square meters, which spreads across several provinces, cities and autonomous regions across the country. In the spring of 1969, it began to be used in batches at the Beijing Dongfanghong Refinery Project. The prestressed V-shaped flaps were built in the year.