DB11∕T 1727-2020 火灾后钢结构损伤评估技术规程

1UG北京市地方标准编号：DB11/T1727－2020火灾后钢结构损伤评估技术规程Technicalspecificationforsteelstructuredamageassessmentafterfire2020－03－30发布2020－07－01实施北京市住房和城乡建设委员会北京市市场监督管理局DB联合发布2北京市地方标准火灾后钢结构损伤评估技术规程Technicalspecificationforsteelstructuredamageassessmentafterfire编号：DB11/T1727-2020主编部门：北京市建筑工程研究院有限责任公司批准部门：北京市市场监督管理局施行日期：2020年07月01日2020北京3前言根据原北京市质量技术监督局《关于印发2014年北京市地方标准制修订项目计划的通知》（京质监标发〔2014〕36号文件）要求，标准编制组经过深入调查研究，认真总结实践经验，参考国内相关标准，在广泛征求意见的基础上，制定本规程。本规程共分7章，主要内容为：1总则、2术语、3基本规定、4调查和检测、5结构分析与构件校核、6构件及连接安全性鉴定评级、7结构安全性鉴定评级。本规程由北京市住房和城乡建设委员会和北京市市场监督管理局共同管理，由北京市建筑工程研究院有限责任公司负责具体技术内容的解释。执行过程中如有意见和建议，请寄送北京市建筑工程研究院有限责任公司（通信地址：北京市海淀区复兴路34号；邮政编码：100039；电话：[phone]；电子邮箱：[e-mail]）。主编单位：北京市建筑工程研究院有限责任公司、清华大学参编单位：北京建工集团有限责任公司、北京京诚华宇建筑设计研究院有限公司、中国五洲工程设计集团有限公司、北京工业大学、北京建筑大学、中国移动通信集团设计院有限公司主要起草人员：左勇志、施刚、刘育民、冯跃、姜学宜、鲁巧稚、马月坤、马德云、刘亚坤、南锟、闫续、杨璐、祝磊、丁大益、郭俊平、王宏欢、孙迪、陈鸣飞、邹林亥、李真真、郝梦瑶、刘云龙、张密、李博天主要审查人员：杨嗣信、李国胜、高小旺、田春雨、王喆、孙海林、甄4伟、吴文超、赵克伟5目次1总则.............................................................................72术语.............................................................................83基本规定...........................................................................94调查和检测........................................................................114.1一般规定.....................................................................114.2火灾作用调查.................................................................114.3结构现状检测.................................................................125结构分析与构件校核................................................................136构件及连接安全性鉴定评级..........................................................146.1一般规定.....................................................................146.2构件及连接的鉴定评级..........................................................157结构安全性鉴定评级................................................................197.1一般规定.....................................................................197.2结构安全性的鉴定评级..........................................................19附录A钢结构的耐火极限...............................................................20附录B标准升温曲线及温度-时间对应关系................................................21附录C常见材料燃点、变态温度.........................................................23附录D高温过火后结构钢的屈服强度折减系数.............................................25本规程用词说明.......................................................................26引用标准名录.........................................................................27条文说明.............................................................................286Contents1GeneralProvisions.........................................................................................................................................72Terms...............................................................................................................................................................83BasicRequirements.......................................................................................................................................94InvestigationandTesting.............................................................................................................................114.1GeneralRequirements.........................................................................................................................114.2InvestigationofFireEffect.................................................................................................................114.3ActualitytestingofStructure..............................................................................................................125StructureAnalysisandComponentsChecking.........................................................................................136RatingforComponentsandConnectingSafetyAppraisal......................................................................146.1GeneralRequirements.........................................................................................................................146.2RatingforComponentsandConnectingAppraisal.............................................................................157RatingforStructureSafetyAppraisal........................................................................................................197.1GeneralRequirements.........................................................................................................................197.2RatingforStructureAppraisal............................................................................................................19AppendixAFireResistanceRatingofSteelStructure................................................................................20AppendixBStandardHeatingCurveandCorrespondenceofTemperature-Time..................................21AppendixCIgnitionPointsandTransformationTemperatureofCommonMaterials...........................23AppendixDReductionFactorofYieldStrengthforstructuralsteelafterfire.........................................25ExplanationofWordinginThisspecific