The effect of cold wave , layer thickness of construct and sluice to temperature field and stress field are studied . this paper analysis the effect of the first stage cooling and the second stage cooling . pertinent measures of temperature control and crack prevention are suggested , settling the practice problems in projects 重點研究了寒潮、澆筑層厚和蓄水等對拱壩混凝土溫度場和應(yīng)力場的影響;對壩體一期冷卻和二期冷卻的冷卻效果進行了詳細分析;并針對性地提出了相應(yīng)的溫控防裂措施,以解決工程實際問題。
According to the concrete ages of different grout compartments , the concrete temperature rising process and the arching temperatures etc . , aiming at the optimization of technology and economy , the paper studies systematically the feasibility of applying different temperature control measures in different seasons and at different elevations ; and obtains characteristic parameters of arch dam temperature fields and stress fields so as to provide a basis for construction units to implement second stage cooling or third stage cooling according to particular demand at that time 為了達到技術(shù)上與經(jīng)濟上雙優(yōu)的目的,根據(jù)不同灌漿區(qū)的混凝土齡欺、混凝土溫升過程、封拱溫度等,系統(tǒng)研究了在不同季節(jié)里、在不同高程上采取不同溫控措施的可行性,得到了拱壩溫度場與應(yīng)力場的特征參數(shù),為施工單位根據(jù)當(dāng)時的特定需要,進行二期冷卻或三期冷卻提供了依據(jù)。