Special-Shaped Column Frame Seismic Performance Analysis And Selection Of Design Parameters

With the steady development of China's national economy, people's living standards improve, people increasingly high housing standards. In order to overcome the masonry structure and the general framework of the shortcomings in the residential, engineering has been improved first frame columns, rectangular columns in the frame or square columns in a different location with more suitable forms of shaped column structure instead of, Such asthe commonly used:L.T.(?). Shaped column frame structure and framework to overcome the common shortcomings of ordinary shear walls, frame columns hidden in the wall, avoiding the corner, column Leng Kok prominent space on the interior and the impact of visualimpact and improve the efficient use of building space; At the same time can satisfy therequirements of modern residential building large room, flat and room neat, flexible arrangement, to avoid the emergence of small-chu leng room, a small exposed beams, with good economic and social benefits, and thus by the tenants and developers welcome.This article describes the special-shaped column structure with the general theory of elastic dynamic analysis method to a practical project and a design engineering background, the use of PKPM, S AP2000 software, and the establishment of the original structure of the finite element analysis model.First through the use of special-shaped column of a program to optimize the design of complex structures, with emphasis on analysis and comparison of the local special-shaped columns, rectangular columns wide, with short shear wall structure of local programs on the overall structure of the cycle, displacement, layer stiffness ratio and other indicators and the size of the force relationship in order to choose a reasonable model.Secondly shaped cylinder model, combined with the technical regulations shaped column on the current design unit PKPM widely used design software in the design of shaped column selection when optimizing the parameters, more shaped columns summarize the actual parameters of the force.Shaped column and then a full layout of the project as the background, using SAP2000 finite element software, the establishment of the original structure of the three-dimensional finite element analysis model. Through the response spectrum and time history analysis to study the setting shaped column structure and dynamic properties of the structure under earthquake lateral displacement, and the total shear and other properties, to analyze the effect of frequent earthquake seismic response.Finally, nonlinear static pushover (Pushover) analysis revealed the structure of special-shaped columns and the order of the plastic hinge mechanism, and the structure of the plastic state of rectangular column comparing the weak links come shaped column.