|
Title |
An Experimental Study for Reinforcement Effect of Adhesive Stiffeners Depending on the Aspect Ratio of Masonry Wall
|
|
Authors |
박병태(Byung-Tae Park) ; 권기혁(Ki-Hyuk Kwon) |
|
DOI |
https://doi.org/10.11112/jksmi.2017.21.4.013 |
|
Keywords |
비보강 조적조 ; 경제적인 보강법 ; 외부보강 ; 접착형보강재 ; 전단강도 Unreinforced masonry ; Economical reinforcement methods ; External reinforcement ; Adhesive stiffeners ; Shear strength |
|
Abstract |
Unreinforced masonry buildings are vulnerable to lateral forces, such as earthquakes, owing to the nature of the building materials, yet numerous masonry buildings remain in South Korea. Since the majority of the existing masonry buildings were constructed more than 20 years ago, it is necessary to develop economical reinforcement methods for disaster reduction. In this study, external reinforcement of masonry walls using adhesive stiffeners was proposed as a reinforcement method for such age-old masonry buildings. Six specimens were fabricated with different aspect ratios (L/H = 1.0, 1.3, and 2.0) and used in static load tests to verify the reinforcement effect. The experimental results showed that the masonry walls before and after reinforcement were ruptured by rigid body rotation and slip. In addition, the maximum strength, maximum displacement, and dissipated energy of the walls were shown to increase after applying the adhesive stiffeners, thereby verifying the excellent reinforcement effect. Furthermore, an adhesive stiffener design for unreinforced masonry walls was proposed based on the increased shear strength achieved by using conventional glass fibers. The proposed design can be used as a basis for the application of adhesive stiffeners for unreinforced masonry walls.
|