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A new type buckling restrained brace ensuring to work under different levels of earthquakes is analyzed in this paper. The brace is simplified by LINK elements of SAP2000. The skeleton curve of the mode is clarified. Three specimens with different slot widths are designed to evaluate the simplified model used in the software SAP2000. The evaluation work is accomplished through the software ABAQUS. The force mechanism, the hysteretic model and proposed reasonable scopes of slot widths are grasped. The numerical simulation work proves that the new type buckling restrained brace performs excellently.

Because of the predominance of construction techniques, a solid knowledge of reinforced concrete principles and rules is necessary and crucial. This study focuses on a comparative studies of different sizing standards, the Euro Code 2,the Egyptian Code 203 and the Algerian Code 93 for a rectangular reinforced concrete section subjected to simple bending in limit states and is well supported on one hand by one of the determining factors in design and on the other hand by the economy and security. The comparison of sizing standards in the limit states will assist the designer in their choice of a suitable design code.