水闸闸墩温度场及应力场仿真分析

Numerical simulation of temperature field and stress field of sluice piers

水闸闸墩开裂已成为水闸建设中的通病 ,要深刻地量化揭示这些裂缝形成的机理 ,需要发展能精细地模拟混凝土的材料特性、浇筑过程及外界环境条件变化的数值方法 .为此 ,应用非稳定温度场和徐变应力场仿真程序对裂缝产生的原因进行了探讨 .结果表明 ,对水闸闸墩这样的水工薄壁结构 ,如果没有有效的温控措施 。

The cracking of sluice piers under construction is a usual phenomenon. It is necessary to develop a numerical method to simulate the properties of concrete, the construction process, and the variation of environmental effect, so as to quantitatively reveal the mechanism of cracking. A study is performed on the computation theory and code design method for numerical simulation of the unsteady temperature field and creep stress field of sluice piers. With an existing sluice as an example, the analytic results indicate that it is difficult to avoid cracking in sluice piers if no effective temperature control measure is adopted.