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介绍某化纤厂火灾后检测的方法和内容,包括构件的截面几何尺寸、混凝土强度、钢筋强度、混凝土碳化深度等。根据检测结果和计算分析,对火灾后受损结构进行了安全性鉴定。并根据具体构件的鉴定结果,提出与之相适应的加固维修方案。对受损柱,分别采用增大截面、外包钢和外贴碳纤维的方法加固处理;对受损梁,分别采用拆除置换、外包钢和外贴碳纤维的处理方法;对受损板,分别采用拆除置换、板底植筋外加喷射混凝土和外贴碳纤维的处理方法。按照该方案加固后的厂房结构完全能够满足正常使用要求。
This paper introduces the method and content of post-fire detection in a chemical fiber plant, including the cross-sectional geometric dimensions of components, the strength of concrete, the strength of rebars and the depth of carbonation of concrete. According to the test results and the calculation and analysis, the safety of the damaged structure after fire was identified. And based on the identification results of specific components, put forward corresponding reinforcement plan. The damaged columns were reinforced by the method of increasing the cross-section, the outer cladding steel and the outer bonded carbon fiber respectively. The damaged beams were treated by dismantling, replacing the outer cladding steel and the outer bonded carbon fiber respectively; Using dismantling and replacement, board at the end of planting bar plus spraying concrete and carbon fiber paste treatment. According to the program after strengthening the plant structure can fully meet the normal use requirements.