Optimization Research Of Mixture Proportion In Mass Concrete Of High-rise Building's Foundation Based On Genetic Algorithms

In our country,with the number of high-rise buildings rising, It is becoming more and more prominent that the temperature crack of mass concrete foundation. In this paper, based on the mixture proportion of concrete material, the problems of how to reduce the heat of hydration and how to increase the crack resistance are studied.In this paper, from the micro mechanics, the crack mechanics of mass concrete is analyzed, the influence factors which influent the temperature field and temperature stress are studied, the methods and technical measures of crack control on mass concrete are generalized, and the characteristic of mass concrete on high-rise building's foundation is analyzed.Based on the theory of conventional design methods on concrete, according to the characteristics and demands of the mass concrete on high-rise building's foundation, the mathematics model is established. In this model, the object function is the highest temperature rise value, the concrete compression stress and crack resistance index are considered, and the admixture constraint condition is pulled in. So, the utility of the model is more higher. In this paper, the genetic algorithms is apply to solute the model. And the calculated mixture proportion is used in specific high-rise building project. Through the detection and the observation, it is checked that the concrete crack resistance is good.