Impact On The Overall Performance Of Steel-Concrete Frame Structures Locally Bonded Steel Reinforcement

Reinforced concrete frame structure is the most widely used in the construction of a structure, due to seismic action, improper construction quality, design and function change in a variety of reasons, such as the need for reinforcement to ensure structure safety and reliability.The steel frame structure reinforcement problem has always been committed to research a topic at home and abroad, even in the highly developed science and technology today, its research is still in the stage of exploration and development.Local reinforcement many problems concerning the steel frame structure, not only to follow the current regulations and standards, it involves the engineering practice, the standard of material in the past.Local research, therefore, the steel frame structure reinforcement is necessary to affect the performance of the whole, so that local reinforcement of similar projects in future, can better guarantee the overall performance of the structure.This paper studies the main content is as follows: to determine the in service technology principle of renovation and construction projects;Analysis of original structure, in order to fully grasp the overall structure and the structural performance, and provide reform must be the original structure of basic data information;Concrete reinforcement of the identified specific components, respectively, the choice of concrete reinforcement method, and on this basis, through the optimization of local structure reinforcement scheme design, determine the structure of the whole reinforcement scheme;Built based on a practical engineering using SAP2000 structure analysis software, and local artifacts model analysis of reinforced concrete frame structure after reinforcement effect the performance of the structure as a whole;To summarize the reinforcing reform of engineering analysis, proposed the concrete conclusion and deal with the similar engineering problems of scientific advice.The following conclusions:â‘  the steel frame structure of the local component(stair column) stick steel strengthening make the level of the framework of lateral stiffness, bending modal frequency and torsional modal frequency increases, the bend modal vibration and torsional vibration modal of the effect is not obvious;â‘¡ under the seismic action, the local component(stair column) the steel frame structure of stick steel strengthening the maximum bending moment in the top frame beams and columns increase, may exceed the limit bearing capacity.Reinforcement of local components and failed to achieve the purpose of improve overall frame aseismic ability;â‘¢ under the action of earthquake, the steel frame structure of local component(stair column) stick steel reinforcement makes the frame structure of a part of the framework and the shear force, axial force and bending moment value increases, structure be unsafe, so on this kind of structure reinforcement, reinforcement of local components should be considered for the influence of the whole frame structure performance to avoid attend.Through these analysis, optimization of reinforcing plan for the future similar projects to provide better reference basis, and on the premise of guarantee the optimal overall performance structure targeted to local reinforcement of structure, can more effectively achieve reinforcement effect.