theIn the column frame structure stiffness calculation is the line. Beam line stiffness ratio change framework of internal force will change. In the building and strengthening the process, which affects the first column will occur or big or small change. That will make the local structural strengthening internal force influenc
the abstractIn the column frame structure stiffness calculation is the line. Beam line stiffness ratio change framework of internal force will change. In the building and strengt