新型弹性体伸缩缝铁路混凝土桥梁中的应用  

Application of New Elastomer Expansion Joint in Railway Concrete Bridge

作　　者：刘树国 Liu Shu-guo

机构地区：[1]中铁十九局集团第六工程有限公司

出　　处：《建筑技术开发》2019年第21期137-138,共2页Building Technology Development

摘　　要：双组份聚氨酯弹性体材料制作铁路混凝土桥梁弹性体伸缩缝具有低弹模、高强度、高延伸率和良好的耐候性能等特点,具备桥梁伸缩缝的所有使用功能,能适应热挤冷拉的实际工况,而且结构合理、工艺简便、防水效果好、易于修复。经疲劳试验结果表明,弹性体伸缩缝结构性能良好,满足梁端变形要求,可在铁路混凝土桥梁中推广使用。The elastomer expansion joint of railway concrete bridge made of two-component polyurethane elastomer material has the characteristics of low elastic modulus,high strength,high elongation and good weather resistance. It has all the functions of bridge expansion joint and can adapt to the actual working conditions of hot extrusion and cold drawing,and has reasonable structure,simple technology and good waterproof effect,easy to repair. The fatigue test results show that the elastomer expansion joint structure has good performance and meets the deformation requirements of the beam end. It can be widely used in railway concrete bridges.

关 键 词：聚氨酯弹性体材料 混凝土桥梁弹性体伸缩 结构性能 

分 类 号：TU5[建筑科学—建筑技术科学] U445.4[建筑科学—桥梁与隧道工程]