Compares the experimental results with those from the simulation using a two-dimensional steady-state heat transfer software—PTDA(planar temperature distribution and analysis) and the calculation by the one-dimensional simplified method defined in the current design codes of China.

The three-point cubic interpalation for one-dimensional optimization;

By using local one dimension method, the alternate direction line algorithm with high order accuracy is given for two dimension convection_diffusion problems.

A planar simplified method for three-dimension cement-soil mixing piles composite foundation with FEM numerical analysis;

A simplified method for tooth surface equation of an equal-height spiral bevel gear;

Based on the differences of structural response between multi-dimensional excitation and simple-dimensional excitation,a simplified method to calculate member forces under multi-dimensional and multi-support excitation is presented in this paper.

According to the results,the simplification method is more conservative than the simulation method;the contact state between steel spiral case and its periphery concrete and the way of supporting of steel spiral case in construction have significant influences on the periphery concrete stress.