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焦枝铁路复线的洛阳黄河大桥设计方案将采用50m预应力混凝土简支T梁,这是我国目前铁路预应力混凝土简支梁中的最大跨度(过去最大达40m)。技术设计方案为53孔50m预应力混凝土简支梁,全桥总长2700m。单线铁路桥梁每孔由二单片T梁组成,梁高3.65m,高跨比1:31.7,上翼缘宽2.10m,下翼缘宽1.09m,为了加强梁的横向刚度,采取每个横隔板下设一段水平底板的结构形式,将桥面板与横隔板进行连接。经有机玻璃模型进行试验与计算分析,证明这种结构形式能满足横向刚度的要求。根据梁体强度的安全系数,每片梁设
The design scheme of Luoyang Yellow River Bridge of Jiaozhitielu Double-track Railway will adopt 50m prestressed concrete simply-supported T-beam, which is the largest span in China (up to 40m in the past) in present-time prestressed concrete railway. Technical design for the 53 holes 50m prestressed concrete simply supported beams, the total length of the bridge 2700m. The single-track railway bridge is composed of two single-piece T beams with a beam height of 3.65m, a high-span ratio of 1: 31.7, an upper flange width of 2.10m and a lower flange width of 1.09m. In order to strengthen the transverse rigidity of the beam, Under the partition a horizontal floor structure, the bridge deck and the diaphragm to connect. Experimental and computational analysis of the plexiglass model proves that this type of structure can meet the requirements of transverse stiffness. According to the safety factor of the strength of the beam, each beam set