预应力钢筋混凝土是一种新型结构。它能节约许多钢材,能保证工程质量,并有利于采用工业化的生产和机械化的施工。目前,世界各技术先进国家,在预应力钢筋混凝土结构(本文简称预应力结构)方面的科学研究和制作技术已经达到相当水平。苏联、捷克、波兰等国家在梁、柱、屋架、桥梁等方面都已广泛采用,法、英、美、西德等资本主义国家,对预应力结构的研究和制作也很发达。在我国,近两年来,对预应力结构的研究、试制与采用已经开端,象电力工业、铁道和建筑工程等方面,曾先后成功地制造了电塔、轨枕、桥梁与屋架,公路系统也将于1957年开始采用。因此,在这里介 Prestressed reinforced concrete is a new type of structure. It can save a lot of steel, to ensure the quality of the project, and conducive to the use of industrial production and mechanized construction. At present, the scientific research and production technology of prestressed reinforced concrete structures (hereinafter referred to as prestressed structures) have reached a considerable level in all countries with advanced technologies in the world. The countries such as the Soviet Union, the Czech Republic and Poland have been widely adopted in such fields as beams, columns, roof trusses and bridges. The capitalist countries such as France, Britain, the United States, and West Germany have also developed and researched and produced prestressed structures. In our country, in the past two years, the research, trial manufacture and application of prestressed structures have been started. For example, power towers, rail sleepers, bridges and roof trusses have been successfully manufactured in areas such as power industry, railways and construction projects. Used in 1957. So here’s the referral