Research On Strengthening Design Of Multi-Story RC Frame Structure With Energy Dissipation Brace

Seismic strengthening the electron industry factory building of multi-story RC frame structure in NanChang city, this article presents two strengthening methods on the basis of the engineering background and past experience:traditional strengthening method and energy dissipation strengthening method。this text concretely selects the ordinary angle steel brace and viscous damping energy dissipation strengthening method, makes the static elastoplastic analysis and research of the structure through pushover analysis function of the finite element analysis software SAP2000, and provides some effective suggestions and advice to seismic strengthening of the project:1. Setting up ordinary angle steel brace, and the angle steel brace adopt five decorate forms:forward direction diagonal brace、opposite direction diagonal brace、"X" brace、"V" brace、Inverted "V"(the Herringbone)brace, analyse the response of the structure when it experiences7degree and8degree rare earthquake under the strengthening of the angel steel brace, compare and analyse the different influence of the strengthening effect under the different decorate form of angle steel brace。2. Setting up viscous damper form of energy dissipation, viscous damper adopt seven decorate plans:analyse the response of the structure when it experiences7degree and8degree rare earthquake under the strengthening of the viscous damping, compare and analyse the different influence of the strengthening effect under the different decorate plan of viscous damping。3. compare and analyse the different influence of the strengthening effect under the different decorate form of angle steel brace and the different decorate plan of viscous damping, analyse the reason of the different influence of the strengthening and the different mechanism of energy dissipation on the whole and detail, Contrast the different strengthening performance respectively under7degree and8degree rare earthquake, and compared with each index of the original structure, explain the similarities and differences of traditional strengthening method and the energy dissipation damping strengthening method, and also give some advice on seismic strengthening, points out that should be combined with the actual engineering situation, apply targeted and appropriate seismic strengthening method, find a balance between safety use and economy, etc, and can be able to better improve seismic performance of the structure。...