轨道线路检测 混凝土枕伤损分类 （双语）混凝土枕伤损分类.ppt

* * Types of Concrete Sleeper Defect 土木工程检测技术专业教学资源库 混凝土枕伤损分类 Learning Resources for Surveying Technology for Civil Engineering Majors 1. Types of concrete sleepers 混凝土枕类型 2. Standards for concrete sleeper failure 混凝土枕失效标准 3. Standards for concrete sleeper defect 混凝土枕严重伤损标准 Types of Concrete Sleeper Defect 混凝土枕伤损分类 Q：How to distinguish the concrete sleeper defect? Types of Concrete Sleeper Defect 混凝土枕伤损分类 Lead-in 导入： 问题：如何判别混凝土枕伤损？ Position: transversely distributed under the rails Function: to maintain rails pressure transfer Requirements: firm, durable, elastic Types of Concrete Sleeper Defect 混凝土枕伤损分类 1. Types of concrete sleepers 混凝土枕类型 位置：横向铺于钢轨轨底 作用：固定钢轨、传力 要求：坚固、耐久、有弹性 Reinforcement model ordinary reinforced concrete sleepers pre-stressed reinforced concrete sleepers ordinary concrete sleepers broad concrete sleepers bi-block sleepers capacitive sleepers concrete bridge sleepers turnout sleepers Types of Concrete Sleeper Defect 混凝土枕伤损分类 1. Types of concrete sleepers 混凝土枕类型 (1) Obvious broken down 明显折断； (2) Penetrated Longitude crack 纵向通裂： Rail seat shoulder gap is over 1.5mm 挡肩顶角处缝宽大于1.5mm； Longitudinal horizontal cracks are almost penetrated 纵向水平裂缝基本贯通； (3) Horizontal cracks are almost in loops 横裂接近环状裂纹； (4) Rail seat deterioration causes failure in supporting capacity; 挡肩破损，接近失去支承能力； (5) Severe spalling 严重掉块。 Types of Concrete Sleeper Defect 混凝土枕伤损分类 2. Standards for concrete sleeper failure 混凝土枕失效标准 (1) The length of horizontal cracks reaches to 1/2-2/3 of the sleeper height. 横裂裂缝长度为枕高的1/2～2/3； (2) Longitude cracks 纵裂： Longitude cracks between two bolt holes;两螺栓孔间纵裂； Longitude horizontal cracks that are almost penetrated; 纵向水平裂缝基本贯通； (3) The length of rail seat abrasion reaches to 1/3～1/2 of the total length of the rail seat; 挡肩破损长度为挡肩长度的1/3～1/2； Types of Concrete Sleeper Defect 混凝土枕伤损分类 3. Standards for concrete sleeper defect 混凝土枕严重伤损标准 (4) Severe reticular cracking and spalling; 严重网状龟裂和掉块； (5) Collapse of rail sea