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Seismic Performance Evaluation of FRP Retrofitting Concrete Structures Based on Capacity Spectrum Method

Author: ZuoHaiBo
Tutor: HeZheng
School: Harbin Institute of Technology
Course: Structural Engineering
Keywords: FRP Concrete structures Seismic reinforcement Capacity spectrum method Pushover analysis
CLC: TU311.3
Type: Master's thesis
Year: 2007
Downloads: 171
Quote: 1
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Abstract


Pushover analysis method is a method of an assessment of seismic capacity, mainly for anti-sway capacity checking of the existing structure or design, it is effective to avoid the complex calculation of the nonlinear dynamic analysis method is a simple and effective seismic capacity evaluation tools. FRP seismic reinforcement of concrete structures to facilitate construction, quality, easy to control and will not affect the normal use of the original structure of the system and the reinforced concrete columns reinforced stiffness advantages, but at this stage mainly FRP seismic constraints concrete members for structure The study of the performance and of insufficient. Pushover analysis method with FRP Seismic Strengthening combine reinforcement design methods can effectively analyze the weak link of the original structure and reinforced concrete structural performance. Pushover analysis combined of FRP Seismic constraints reinforced concrete design method calculation and its impact on the performance of the reinforcement structure. On the one hand, with 60 vibration record statistical analysis of average strength reduction coefficient spectrum comparison, one of the core content of the capacity spectrum method strength reduction factor model analysis, the results show that a variety of site conditions, performance optimal Fajfar model. On the other hand, the experimental and theoretical research from FRP confined concrete column members two of the three types of FRP seismic retrofit design method: direct reinforcement design method, equivalent with the the hoop method and FRP confined concrete section analysis study compared results show that FRP confined concrete sectional analysis analysis of FRP confined concrete members all important performance characteristics paragraph (elastic segment yield and damage Segment) and accurate results, is the ideal method for this stage FRP confined concrete component performance. Finally, through the analysis of beam and column member section of a six-storey concrete frame structure FRP Seismic Strengthening design, elaborate Pushover analysis combined FRP seismic reinforcement design method calculation, and the performance of the reinforcement structure compare results effectively improve the ductility of the structure of FRP seismic reinforcement, greatly enhancing the seismic performance of the structure, use of the combination of the capacity spectrum method clearly shows the weaknesses of the original structure and reinforced concrete structure to improve information is an ideal FRP seismic retrofit design method.

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CLC: > Industrial Technology > Building Science > Building structure > Structure theory to calculate > Structural Mechanics > Structural Dynamics
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