The purpose of this study is to deliberate on design application for a structure of beam with partially restrained composite connection to CFT column. It was intended to apply an economic and stable component by adjusting stiffness ratio of column connection through partially restrained composite connection. As a result of the review of stability of the structure, it was confirmed that in case of a low-rise building as a moment frame, it could be resisted without brace, as stiffness was increased when taking advantage of partial restrained composite connection by composite action.

This study aimed at construction of text and graphic database for moment-rotation curves of partially restrained composite beam-to-column connections. key words The M-θ data or figures under monotonic or cyclic tests are made as text files. Also, Eurocode 3 classification is added to the M-θ curve to verify as semi-rigid connections. For structural analysis, linear rotational stiffeness or nonlinear M-θ curves are transformed three-parameter power model. Although this database has some limitation, it will be used for further PRCC researches and tests.

The object of this study is to develop a computer program that can help practical engineers to calculate sectional modulus and plastic moments of full composite girders with deck plates under positive and negative bending moments. The sectional modulus are equivalent moments of inertia for elastic analysis and plastic section modulus for plastic analysis. Results of Hwang's research are used to verify this developed program. AIK, KBC 2005 and 2009 are used to define effective widths of RC slab and to calculate positive plastic moments. For calculating negative plastic moments, this study proposed stress blocks and their equations. The developed program will be added about partial shear interactions and deflections of composite girders and finally proposed as GUI environment.