摘要
以某公路特大桥桥墩墩身火灾为例,介绍了火灾现场调查内容和材料损伤检测。根据材料强度损伤检测结果推断墩身的受火温度,在确定受火温度的基础上运用数值模拟方法确定了墩身的烧伤深度。通过分析墩身火灾前后承载能力的变化,依据火灾安全性评定标准进行了不同受火面鉴定评级定并制定了相应的加固方案,可为日后的火灾工程事故研究和加固设计提供借鉴。
Taking a highway super major bridge pier fire as an example,the fire scene investigation contents and material damage detection were introduced.The material strength damage detection results was used to infer pier temperature,basis on fire temperature,numerical simulation method was used to calculation the depth of the pier burns.The pier carrying capacity was analyzed before and after the fire,different surfaces exposure to fire were identified base on the fire safety standards,and the corresponding reinforcement program was developed.The accident was provided to future incidents of fire engineering research and strengthening design.
出处
《公路工程》
北大核心
2013年第1期158-162,共5页
Highway Engineering
关键词
桥梁
火灾
墩身
检测
修复
bridge
fire
pier
detection
repair
