结构工程师
結構工程師
결구공정사
STRUCTURAL ENGINEERS
2014年
6期
90-97
,共8页
高温%混凝土%温度场%计算方法
高溫%混凝土%溫度場%計算方法
고온%혼응토%온도장%계산방법
high temperature%concrete%temperature field%calculation method
混凝土构件及结构高温性能的分析逐渐成为欧洲等地区结构抗火设计规范的重要内容，我国一些地方也颁布了混凝土结构抗火设计规范。火灾下混凝土结构温度场的计算是确定结构混凝土高温下性能和进行抗火设计的前提。目前，欧洲规范(Eurocode 2)给出了试验法、实用图表法、数值分析等计算混凝土结构温度场的方法，一些学者给出了简化计算的方法。采用这四种方法对厚度120 mm 混凝土板的温度场进行计算，分析对比了不同方法间的差异，给出了不同方法结果一致性思考及部分方法的适用条件。
混凝土構件及結構高溫性能的分析逐漸成為歐洲等地區結構抗火設計規範的重要內容，我國一些地方也頒佈瞭混凝土結構抗火設計規範。火災下混凝土結構溫度場的計算是確定結構混凝土高溫下性能和進行抗火設計的前提。目前，歐洲規範(Eurocode 2)給齣瞭試驗法、實用圖錶法、數值分析等計算混凝土結構溫度場的方法，一些學者給齣瞭簡化計算的方法。採用這四種方法對厚度120 mm 混凝土闆的溫度場進行計算，分析對比瞭不同方法間的差異，給齣瞭不同方法結果一緻性思攷及部分方法的適用條件。
혼응토구건급결구고온성능적분석축점성위구주등지구결구항화설계규범적중요내용，아국일사지방야반포료혼응토결구항화설계규범。화재하혼응토결구온도장적계산시학정결구혼응토고온하성능화진행항화설계적전제。목전，구주규범(Eurocode 2)급출료시험법、실용도표법、수치분석등계산혼응토결구온도장적방법，일사학자급출료간화계산적방법。채용저사충방법대후도120 mm 혼응토판적온도장진행계산，분석대비료불동방법간적차이，급출료불동방법결과일치성사고급부분방법적괄용조건。
High-temperature performances of RC members and structures become important in fire-resistant design of RC structures. Calculations of temperature distribution of RC structures have been specified in some design codes. A standard for fire-resistant design of RC structures was issued in Guangdong, China. Current-ly, methods to obtain temperature field of RC structures include searching charts, numerical analysis, and test methods, which was suggested in Eurocode 2. Some simplified approaches were also proposed by different scholars. In this paper, four different methods were used to calculate temperature variation along the thickness of an 120mm RC slab. Comparisons between different methods were conducted. Result analyses of these cal-culating approaches result in an understanding of these methods.
