MgO混凝土变形模拟中新的"等效龄期"法

为考虑变温条件对MgO混凝土微膨胀过程的影响,提出了一种新的“等效龄期”法。采用该方法,可以简便地对实际工程中MgO混凝土的自生体积变形进行计算,并能保证较高的精度,为MgO补偿收缩混凝土的温度场、应力场计算提供了方便。分析还证实,计算过程中是否考虑温度的影响,对变形模拟的结果有较大的影响,考虑温度影响的变形过程线将更加合理有效。

A New Equivalent Age Method for Deformation Simulating of MgO Concrete

This paper puts forward a new equivalent age method the consideration of the influence of variant curing temperature on micro-expansion process of MgO concrete. Using this method could simplify the calculation of self-volume deformation of MgO concrete and could ensure a high accuracy, which is easy to calculate the temperature field and stress field of MgO compensation-shrinkage concrete. By eontrastive analysis of the simulated and measured result, it has also been authenticated that curing temperature was very important while calculating the deformation of MgO concrete, and the deformation graph would be more rational and effectively if considering the effect of temperature.