人民黄河
人民黃河
인민황하
Yellow River
2015年
8期
133-136
,共4页
粉煤灰掺量%徐变%预测模型%水工混凝土
粉煤灰摻量%徐變%預測模型%水工混凝土
분매회참량%서변%예측모형%수공혼응토
high volume fly ash%creep%prediction model%hydraulic concrete
针对不同粉煤灰掺量（30％～80％）的水工混凝土进行试验研究，总结粉煤灰掺量、加荷龄期、持荷时间等因素对水工混凝土徐变性能的影响；通过对比分析国内外混凝土徐变预测模型，发现B3模型预测值在变化趋势上与试验结果最为接近，但预测值高于试验值，而朱伯芳模型预测值与试验结果最接近。实际工程应用时可结合这两种模型对徐变度进行估算。
針對不同粉煤灰摻量（30％～80％）的水工混凝土進行試驗研究，總結粉煤灰摻量、加荷齡期、持荷時間等因素對水工混凝土徐變性能的影響；通過對比分析國內外混凝土徐變預測模型，髮現B3模型預測值在變化趨勢上與試驗結果最為接近，但預測值高于試驗值，而硃伯芳模型預測值與試驗結果最接近。實際工程應用時可結閤這兩種模型對徐變度進行估算。
침대불동분매회참량（30％～80％）적수공혼응토진행시험연구，총결분매회참량、가하령기、지하시간등인소대수공혼응토서변성능적영향；통과대비분석국내외혼응토서변예측모형，발현B3모형예측치재변화추세상여시험결과최위접근，단예측치고우시험치，이주백방모형예측치여시험결과최접근。실제공정응용시가결합저량충모형대서변도진행고산。
This paper studied different fly ash (30% -80%)of hydraulic concrete experiment and summarized hydraulic concrete creep per-formance factors,such as fly ash,loading age,load holding duration etc. It had been compared and analyzed concrete creep prediction mod-el at home and abroad by experimental research,and been found that the range trend of B3 model was consistent with the test,but the pre-dicted values were higher than that of the measured. However,the predicted values of Zhubofang model were close to the test results. There-fore,this study suggested that these two models should be combined to estimate the degree of creep in actual project.
