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Study on contraction joints for the Longtan RCC gravity dam

机译:龙滩碾压混凝土重力坝伸缩缝研究

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摘要

Based on the physical properties of the rolled compacted concrete of the Longtan project, the temperature and the thermal stress fields developed in the dam with or without a longitudinal joint at construction, as well as the maximal temperature drop, are calculated by means of a relocating mesh finite elements method so as to simulate the construction process. The computation results show that the value of the thermal stresses developed in the dam even, without any longitudinal joint, could meet the design criteria provided the placement temperature is adequately controlled.
机译:根据龙潭项目碾压混凝土的物理特性,通过重新布置,计算在有或没有纵向缝的情况下大坝中形成的温度和热应力场以及最大温降。网格有限元法从而模拟了施工过程。计算结果表明,只要适当控制浇筑温度,即使没有任何纵向缝,大坝中产生的热应力值也可以满足设计标准。

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