住宅楼发生火灾后的鉴定及加固  

Identification and reinforcement of a residential building after the fire

作　　者：殷占忠[1,2] 孙源[1] 王立功[1] 

机构地区：[1]兰州理工大学,甘肃土木工程防灾减灾重点实验室,甘肃兰州730050 [2]兰州理工大学,西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050

出　　处：《中国建材科技》2016年第1期91-95,共5页China Building Materials Science & Technology

基　　金：国家自然科学基金项目(51368037);甘肃省高等学校基本科研业务费专项基金项目(1404ZTB256);兰州理工大学红柳青年教师培养计划基金项目(TM-QK-1404)

摘　　要：通过对建筑物烧损构件表观现象进行观察,用回弹法检测混凝土构件的碳化深度和混凝土强度,用超声法检测损伤层厚度,使用钢筋位置测定仪对其钢筋数量与保护层厚度进行了检测,根据《火灾后建筑结构鉴定标准》对检测数据进行了分析,对在火灾中烧损的钢筋混凝土梁、柱、楼板和剪力墙进行了烧损等级的评定,以鉴定评定等级为依据,利用对原过火面积剔凿损伤层后采用高强聚合物砂浆修复、外粘型钢加固、粘碳纤维布加固的加固方法对损伤构件进行了补强处理,经过最后的计算发现结构的强度达到了国家标准所规定的设计强度,满足加固的要求。Through observing the superficial phenomenon of burning building constructional element,testing the carbonation depth and the concrete strength of concrete members with the springback method, detecting damage layer thickness with ultrasound method,testing the quantity of rebar and cover to reinforcement by using reinforcement location tester, according to “the Appraisal Standard of Building Structure After Fire”,we analyzed the test data,evaluated the loss in the fire of the reinforced concrete beam, column,floor and shear wall in the damage grade,and based on the appraisal ratings,repaired with the high strength polymer mortar after the damage layer of the original burning area was chiseled,then sticked steel reinforcement,and sticked carbon fiber cloth reinforce reinforcing method for reinforcement treatment for the injury structural members.Through the final calculation,we found the strength of the structure has reached the national standard of design strength,which met the requirements of the reinforcement.

关 键 词：火灾 钢筋混凝土构件 检测数据 加固措施 

分 类 号：TU746.3[建筑科学—建筑技术科学]