Influence of gap,impurities and component mutation on dynamic character of functionally graded structures;

In the project of cross-under the highway with pipe roof and culvert box method,the interspace between culvert box and pipe roof is limited by several factors.

In the project of cross-under the highway with pipe roof culvert box advancing method,the interspace between culvert box and pipe roof is limited by several factors,rational interspace will bring convenience for the construction,this paper discuss the rational interspaces based on the project of the separating overpass of Zhengzhou-Kaifeng urban route way through the Jing-Gang-Ao highway.

Firstly, principal-component transformation is performed with the hel Pof several classification elements such as various directions fractal dimensions of Fractal Brown Motion, Difference Box-Counting dimension and lacunarity and so on.

For this purpose it employed a technique based on fractal dimension (FD),multi-fractal and lacunarity concepts,and constructed feature vectors based on the concepts combined with intensity.

Its void is at the condition of abnormity and confusion.

The relationship among porosity, drainage and formation for forming wires;