The effect of construction designs on temperature field of a roller compacted concrete dam — a simulation analysis by a finite element method
The effect of construction designs on temperature field of a roller compacted concrete dam — a simulation analysis by a finite element method
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DOI：
10.1139/l03-076
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发表时间：
2003-12
影响因子：
1.4
通讯作者：
Y. Chen;Changjiang Wang;S. Li;L. J. Chen
中科院分区：
文献类型：
--
作者：
Y. Chen;Changjiang Wang;S. Li;L. J. Chen
本文对碾压混凝土坝施工过程进行了数值模拟。考虑了大体积混凝土施工的水化热、龄期、浇筑温度、开始浇筑日期和浇筑速度等特点。对广西龙滩碾压混凝土坝进行了三维有限元模型分析。计算了碾压混凝土坝在成坝过程中和成坝后的温度分布和温度演变规律。采用Fortran程序，可在施工现场的计算机上实现碾压混凝土高坝的三维温度场仿真分析。根据碾压混凝土坝施工期的真实的因素，可以预测碾压混凝土坝的温度分布。因此，工程师可以采取适当的措施来控制混凝土温度，以减少坝体内的温度应力。分析了混凝土浇筑温度、施工速度、开工日期对温度场的影响。
In this paper a numerical simulation of the construction process of roller compacted concrete (RCC) dams is presented. The following features of construction of mass concrete have been considered: hydration heat, age, placing temperature, starting placement date, and placing speed. A 3-D finite element model of the Long-Tan RCC dam, which is to be built in the Guangxi Autonomous Region in China, was analyzed. Temperature distribution and evolution inside the RCC dam were calculated during and after the completion of the dam. Using FortranTM code, a 3-D thermal simulation analysis of a high RCC dam can be realized on a computer at the construction site. Based on the real factors during the construction period, engineers can predict the distribution of temperature in the RCC dam. Therefore, engineers can take appropriate measures to control concrete temperature to reduce thermal stress within the dam. The effects of the concrete placing temperature, construction speed, and starting date on the temperature a...