本文選題：大體積混凝土 + 磷渣　； 參考：《公路工程》2017年02期

【摘要】：以重慶某大橋主墩承臺(tái)為對(duì)象,采用C40低溫升低收縮磷渣大體積混凝土,利用有限元軟件對(duì)其溫度應(yīng)力監(jiān)測(cè)數(shù)值進(jìn)行了仿真研究。結(jié)果表明:利用有限元軟件,仿真計(jì)算低溫升低收縮磷渣大體積混凝土水化熱,可對(duì)混凝土水化熱實(shí)際情況進(jìn)行較好的模擬及預(yù)測(cè)。利用有限元軟件,對(duì)大橋4#承臺(tái)水化熱進(jìn)行仿真分析,通過(guò)對(duì)冷卻管采取降溫措施,發(fā)現(xiàn)在承臺(tái)內(nèi)部,最高溫為71.25℃,最大的內(nèi)外溫差為18.15℃,水化熱得到控制,說(shuō)明采用冷卻管降溫可行。通過(guò)檢測(cè)拆模后大橋承臺(tái)的外觀,發(fā)現(xiàn)無(wú)溫度裂縫產(chǎn)生,說(shuō)明采取合理措施控制大體積混凝土水化熱溫升,能有效控制溫度裂縫的產(chǎn)生。
[Abstract]:Taking the cap of the main pier of a Chongqing bridge as an example, the temperature stress monitoring value of C40 low shrinkage phosphorus slag mass concrete was simulated by using finite element software. The results show that the hydration heat of mass concrete with low temperature rise and low shrinkage can be simulated and predicted by using finite element software. By using the finite element software, the hydration heat of the abutment of the bridge is simulated and analyzed. Through the cooling measures of the cooling pipe, it is found that the maximum temperature is 71.25 鈩，

本文編號(hào)：1926812