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在毛主席革命路线指引下,群众性的技术革新蓬勃开展。为了促进无碴无枕预应力钢筋混凝土梁的发展,据根上级指示,以铁二局为主,由铁二院参加,组成了整孔箱形无碴无枕预应力钢筋混凝土梁三结合试制小组。该组与西南交通大学无碴无枕梁研究小组协作,两年多来,进行了跨度为24.0m的整孔单室箱形无碴无枕预应力钢筋混凝土梁(直线)的设计、试制及试验工作,现简介如下。
Guided by Chairman Mao’s revolutionary line, the mass technological innovations are flourishing. In order to promote the development of ballastless Pillow Prestressed Reinforced Concrete Beams, according to the instruction of the upper level of the root, the Second Bureau of Iron and Steel was the mainstay, and the Second House of Iron was involved to form the combined trial of three whole boxes of box-shaped ballastless Pillow Prestressed Reinforced Concrete Beams group. In collaboration with the Ballastless Pillow Beam Research Group of Southwest Jiaotong University, this group has conducted the design, manufacture and test of a single-hole box-shaped ballastless pillowless prestressed concrete beam (straight line) with a span of 24.0m over the past two years The experimental work is as follows.