混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
China Concrete and Cement Products
2015年
11期
34-36
,共3页
黏结滑移%钢筋%混凝土%高温
黏結滑移%鋼觔%混凝土%高溫
점결활이%강근%혼응토%고온
Bond-slip%Rebar%Concrete%High temperature
对高温后钢筋和混凝土之间黏结强度的既有试验数据进行统计分析，给出了不同温度作用后带肋钢筋与混凝土之间相对残余黏结强度的均值和均方差。分析结果表明，其数据符合正态分布，在此基础上建立了高温作用后钢筋与混凝土相对黏结残余强度均值和具有95%保证率的分位值随温度变化的表达式。统计了光圆钢筋与混凝土之间残余黏结强度随所经历最高温度的表达式，给出了高温后钢筋与混凝土局部黏结滑移本构关系模型。
對高溫後鋼觔和混凝土之間黏結彊度的既有試驗數據進行統計分析，給齣瞭不同溫度作用後帶肋鋼觔與混凝土之間相對殘餘黏結彊度的均值和均方差。分析結果錶明，其數據符閤正態分佈，在此基礎上建立瞭高溫作用後鋼觔與混凝土相對黏結殘餘彊度均值和具有95%保證率的分位值隨溫度變化的錶達式。統計瞭光圓鋼觔與混凝土之間殘餘黏結彊度隨所經歷最高溫度的錶達式，給齣瞭高溫後鋼觔與混凝土跼部黏結滑移本構關繫模型。
대고온후강근화혼응토지간점결강도적기유시험수거진행통계분석，급출료불동온도작용후대륵강근여혼응토지간상대잔여점결강도적균치화균방차。분석결과표명，기수거부합정태분포，재차기출상건립료고온작용후강근여혼응토상대점결잔여강도균치화구유95%보증솔적분위치수온도변화적표체식。통계료광원강근여혼응토지간잔여점결강도수소경력최고온도적표체식，급출료고온후강근여혼응토국부점결활이본구관계모형。
The existing test data on the residual bonding strength between fire-damaged concrete and rebar were collected and analyzed. The mean values and variances of the residual bonding strength between ribbed bars and concrete subjected to different temperature are presented. The analysis shows that the data conforms to normal distribution, thus two formulas are established for relationship between the elevated temperature and the mean value as well as the value with a guarantee rate of 95%. The relationship of temperature and the residual bonding strength between round bar and concrete is also presented. At last the local bond-slip constitutive relationship model is put forward.
