【摘要】：針對碾壓混凝土拱壩基礎(chǔ)墊層易存在溫度裂縫的問題,以某碾壓混凝土拱壩基礎(chǔ)墊層為例,采用三維有限元浮動網(wǎng)格法,模擬基礎(chǔ)墊層跳倉澆筑過程,并進(jìn)行溫度應(yīng)力場仿真分析。結(jié)果表明,控制混凝土澆筑溫度14℃,采取通水溫度20℃、通水時長15d等溫控措施,可使最大溫度應(yīng)力滿足應(yīng)力控制標(biāo)準(zhǔn);上部碾壓混凝土澆筑時間應(yīng)早于2016年10月15日。研究結(jié)果為碾壓混凝土拱壩基礎(chǔ)墊層混凝土施工及確定上部碾壓混凝土開澆時間提供了依據(jù)。
[Abstract]:In order to solve the problem that temperature cracks are easy to exist in the foundation cushion of RCC arch dam, taking the foundation cushion of a RCC arch dam as an example, the three-dimensional finite element floating grid method is used to simulate the pouring process of the foundation cushion. The temperature stress field is simulated and analyzed. The results show that the maximum temperature stress can meet the stress control standard by controlling the pouring temperature of concrete at 14 鈩，

本文編號：2480084