支承介质 meaning in Chinese

lifting medium

Currently , researchers from home and abroad usually use simplified models in the aseismatic analyses of immersed tunnels , which can not properly simulate the two functions of the soil , while the finite element method solves this problem successfully , and the development of numeric calculation and computer technology lays a solid basis for its application , it is a pity that the applications of fem is not common currently
目前，国内外对沉管隧道进行抗震分析时，大多采用简化计算模型，将土的作用以等价弹簧和阻尼器代替，不能适当模拟土既是地震波的传播介质又是结构物的支承介质的双重作用。动力有限元法的连续介质模型很好的解决了这一问题，数值计算理论和计算机技术的发展为该方法的应用奠定了坚实的基础，然而，目前这方面的应用还很少。