Research On The Available Building Structure Seismic Appraisal And Strengthening Design

After the Wenchuan earthquake, earthquake fortification once again pointed toset before the people. Through the seismic damage investigation, experimentalresearch and theoretical analysis shows that, the earlier building structure has higherseismic vulnerability, and a large number of reinforced concrete frame structuredesign basis and standard is too low, coupled with durability and structure damagefactors, seismic performance can not be overestimated. Hence the need for theoriginal structure according to the new requirements in the appropriate evaluationmethod of seismic performance and seismic appraisal, to conduct a comprehensiveinspection, if the identification results show that the structure does not meet theseismic requirements, need to carry on reasonable aseismatic reinforcement, tomaximize the reduction of earthquake disaster and protect the safety of people’s lifeand property.1.Based on the existing structure of the reinforcement of engineering examples,puts forward the overall building structure reinforcement method and train of thoughtIn a clear structure reinforcement technology principles, first using the finiteelement analysis software SATWE to the project in reinforcement reconstructionbefore the structure calculation and analysis, find out the original structure in thestructural properties of obvious weakening; according to the structure calculation andanalysis results, required for the structural system and structural reinforcement anddesign optimization. According to the structure calculation and analysis results, thereinforcement of the members in the whole structure caused by structural performance,internal force change and member reinforcement changes were analyzed, consideringthe reinforcement scheme and measures are safe and feasible under the premise ofstrengthening scheme, optimization design, the structure in strengthening andrebuilding after the effect of research and evaluation.2.Based on the structural reinforcement of research, can solve the followingproblems:1). The optimized structural properties, which makes stress more reasonable;2). The original structure properties of weakened or insufficient bearing capacitypart and corresponding reinforcement;3) as much as possible to solve the problems left over by history, the project hasa considerable safety reserve.3. On the engineering overall reinforcement theory analysis, can get thefollowing conclusions:1. Principles of reconstruction and reinforcement should be determined aimed at characteristics of old projects；2．Treatment and analysis on buildings should be processed on the basis of thewhole structure；3．Reinforcement schemes of the overall structure should be determined afteroptimization design；4．Structure behavior variation could be analyzed according to strengtheningschemes of the whole reinforced structure．In summary，after study on structural reconstruction and reinforcement，aconclusion that the application of integral analysis methods has important practicalsignificance can be seen．...