混凝土温度场反演分析与施工反馈分析

大体积混凝土温度计算模型和温度参数的准确性直接影响温度场、应力场仿真计算的成败.通过现场实测数据进行仿真反演分析以获取温度计算模型和参数,可部分或全部替代实验室选取模型和参数;把反分析得到的模型和参数再通过仿真计算预测下一步施工时的温度和应力状况,用于指导下一步施工.实践表明,这种施工反馈分析机制对工程非常有意义.另外,还提出了掺加缓凝剂后绝热温升的表达式.

Back Analysis of Concrete Tempature Field and Construction Feedback Analysis

Accuracy of the temperature calculated model and the temperature parameters influence the success of the simulated computation of mass concrete temperature field and stress field. The temperature calculated model and the temperature parameters are attained by the back analysis computation with the field measure temperature, which can substitute the partial or all experiment. Then, those temperature calculated models and parameters are used to predict the temperature and stress state through simulated computation, and to help next stage construction, which achieve the effect of the research servicing engineering. The practice suggests this kind of feedback mechanisim creates value for the engineering. In addition,the formula-exponential hyperbolic form-for the adiabatic temperature ascending of the concrete with the inhibitor is given.