| As a modern high-rise buildings and large span engineering and construction of the most common forms of structure, steel structure in the rapid development, but also revealed many engineering problems. From the design, construction, use to project an accident caused by earthquakes occur frequently encounter loads. Among them, the number of conventional steel structure engineering design or construction problems, mostly engineers can be promptly remedied by the construction reinforcing way, by improving the mechanical characteristics of steel or improve systems or local structure, can be expected to avoid project accident.This article is in a commercial building in Chongqing steel framework for the research background, be reinforced beams connecting node for construction errors caused by structural defects force. Two reinforced by the node program analysis and comparison of hysteresis, choose one of the most suitable reinforcement scheme. Meanwhile, according to the node hysteresis analysis of the results, the overall structure of the system for further plastic analysis, projections in the rare case of earthquake, the pros and cons of the selected reinforcement scheme with the original design. That comprehensive elegant from the local to the overall mechanical properties of the steel frame structure system.Overall static analysis of the steel frame system using Midas gen finite element software to the corresponding results of static member as the maximum bending moment of the beam-column joints reinforced node reference object, using the finite element software were calculated Adina original design, construction defects, node groups hysteretic behavior reinforcement program analysis to determine the impact of construction defects on the structure, and compare one group choose to take better mechanical properties of the reinforcement node program. Steel reinforcement program status under the original design and determination of the overall pushover analysis is still using Midas gen finite element software, research methods through hysteretic skeleton curve analysis was to determine the components of the plastic hinge constitutive model, namely the FEMA constitutive curve, pushing through the analysis of the static characteristics of the emergence and development of the course structure overlying the plastic hinge, from a macro perspective to determine the structure along the longitudinal and transverse structure under horizontal seismic response of the two, and then come to reinforce the overall structure of the program by influence characteristics. |
