Damping Performance Analysis Of Buckling Restrained Brace In Steel Truss-mixed System Of Reinforced Concrete Frame

The main anti-seismic performance of this article buckling energy support structure, from the basic principles of energy to support the anti-buckling, buckling energy applications support structure, buckling analysis of the mechanical model of energy and support anti-buckling energy support system when other aspects of the anti-buckling energy support in-depth knowledge and understanding, and anti-buckling energy opportunities and support structures for multi-role rare earthquake history analysis to study the damping effect of the anti-buckling energy performance and support structure.From the principle of energy dissipation ways, prevent buckling support than traditional support more economy and safety, energy consumption with the development of prevent buckling energy support, many new ideas appear in prevent buckling energy shock absorbing device, it is necessary to study new type of energy dissipation device in the actual structure of the damping energy dissipation effect; In terms of energy consumption to support the application, the buckling energy dissipation bracing structure while the application is very wide, but its in the complex hybrid structural system and large span and large cantilever structure study is relatively small, so it is necessary to further research in these structures; From the mechanical model of buckling energy support and structure analysis method, the selection of different mechanics model and analysis method will have different effects on the dynamic response of a structure, it is necessary to analysis and research different buckling prevention support structure system of energy consumption under the specific analysis method and the mechanical model of the response, provide a reference for practical engineering design.Based on the actual project as the background, under the effect of three kinds of seismic waves, the steel truss with prevent buckling energy support-hybrid system damping performance of reinforced concrete frame structure study, through the upper large span space steel truss in low yield point steel brace, through different buckling arrangement, set different buckling layout scheme, and were compared with the original truss structure dynamic response analysis, it is concluded that the upper truss suspension effect index. Then add the buckling in bottom reinforced concrete frame structure, relatively lower structural base shear, interlayer displacement and interlaminar shear and displacement of the vertices of a drop.Through analysis of prevent buckling energy dissipation bracing structure is found that the buckling support in the structure of hybrid damping effect is obvious, some key member of the upper steel truss, prevent buckling supporting axial force of the shock absorption effect can reach30.0%. To infrastructure, the base shear can be reduced by23.9%, interlayer shear force and displacement between layers is significantly reduced, interlaminar shear biggest drop can reach17.5%, interlayer displacement biggest drop can reach22.4%. Visible against the buckling support has good application value in the complex composite structures.