Ductility Analysis Of R.C Special-shaped Columns With Concealed Column And R.C Arbitrarily Inequiaxial Special-shaped Columns

The R.C special-shaped columns exist in its advantages and disadvantages because of uniqueness of section shape. At present, the research of special-shaped columns is pool in the world and the research of R.C special-shaped columns with concealed column and arbitrarily inequiaxial R.C special-shaped columns is less. The theoretical research of ductility of the two types of special-shaped columns is processed and the designed compression ratio is determined in the article.a method of theoretical research of curvature ductility is put forward on the basis of existed research documents of special-shaped columns. The maximum designed compression ratio of two types of special-shaped columns is presented with two methods of curvature ductility and big-small eccentricity failure. And the advantages and disadvantages of the designed compression ratio determined by the two methods is compared to. The designed compression ratio presented in the article is very value in the practice engineering.At last, programs are made for all of models in C++ surroundings. Results of programs indicate that precision is fine and the results are right.