建筑业的专家们都目睹了这样的事实,高效预应力混凝土的出现,我国预应力技术从单个预制构件发展到预应力结构新阶段。几年来,在北京、上海、江苏、浙江、四川等地,陆续建造了一批大柱网预应力混凝土房屋结构、大跨度预应力混凝土桥梁结构、大型预应力混凝土特种结构等,取得了显 Construction industry experts have witnessed the fact that the emergence of highly effective prestressed concrete, the development of China's prestressed technology from a single prefabricated components to the new stage of prestressed structure. Over the past few years, a series of pillar prestressed concrete structures, large-span prestressed concrete bridge structures and large-scale prestressed concrete special structures have been successively built in Beijing, Shanghai, Jiangsu, Zhejiang and Sichuan.