아라미드 섬유시트로 기둥 보강된 필로티 구조물의 내진성능 평가 = Seismic Performance of Piloti-Type Structures with Columns Strengthened with Aramid Fiber Sheets

국문 초록 (Abstract)

이 연구의 목적은 필로티 건축물에서 아라미드 섬유시트의 연성보강 효과를 평가하는데에 있다. 필로티 구조물은 총 2개가 제작되었으며, 반복 횡하중 정적 실험으로 휨 거동을 평가하였다. 연성보강 효과는 횡하중-변위관계, 변위연성비, 일손상지수 및 비틀림 거동으로부터 검증되었다. 실험결과 기둥이 아라미드 섬유시트로 보강된 필로티 건축물은 최대하중 이후 기둥에서 효과적인 구속효과로 전단파괴 방지및 비틀림이 최소화되었으며, 전반적으로 연성적인 거동을 보였다. 결과적으로 기둥이 아라미드 섬유시트로 보강된 필로티 건축물의 변위연성비 및 일손상지수는 보강되지 않은 필로티 건축물보다 각각 4.63배 및 42.81배 높았다.

다국어 초록 (Multilingual Abstract)

This study is to evaluate the ductility strengthening effect of aramid fiber sheets on piloti-type structures. Two piloti-type structure specimens were prepared and tested under statical cyclic lateral loads. The ductility strengthening effect was validated from the analysis of lateral load-displacement relationship, displacement ductility ratio, work damage index and torsion behavior. Test results showed that the post-peak behavior of piloti-type structures with columns strengthened with aramid fiber sheets tended to be ductile resulting from preventing shear failure and minimizing torsion due to the effective lateral confinement of column concrete by aramid fiber sheet. Consequently, the displacement ductility ratio and work damage index of piloti-type structures with columns with strengthened with aramid fiber sheets were 4.63 and 42.81 times higher than those of non strengthened piloti-type structures.

참고문헌 (Reference)

1 이광호 ; 정성훈, "설계편심의 크기에 따른 비틀림 비정형 건물의 최종 정적편심 크기의 비교에 관한 연구" 한국지진공학회 16 (16): 33-40, 2012

2 백은림 ; 오상훈 ; 이상호, "강봉댐퍼로 보강한 기존 저층 철근콘크리트 필로티 건물의 내진성능" 한국지진공학회 18 (18): 241-251, 2014

3 Korea Agency for Technology and Standards, "Test Method for Compressive Strength of Concrete (KS F 2405)"

4 Kim, Y. J., "Sparse Grid Modeling of Carbon Fiber-Reinforced Polymer-Strengthened Pilotis under Biaxial Load" 118 (118): 19-32, 2021

5 Lee, H. S., "Shaking Table Tests of a High-Rise RC Bearing-Wall Structure with Bottom Piloti Stories" 1 (1): 47-54, 2002

6 Antoniou, S., "Seismic Retrofit of Existing Reinforced Concrete Buildings" Wiley-Blackwell 2023

7 Lee, H. S., "Seismic Response Characteristics of High-Rise RC Wall Buildings Having Different Irregularities in Lower Stories" 29 (29): 3149-3167, 2007

8 Zhang, J., "Seismic Performance of Resilient Recycled Aggregate Piloti-Type Structure" 282 : 1-16, 2023

9 Dang-Vu, H., "Seismic Fragility Assessment of Columns in a Piloti-Type Building Retrofitted with Additional Shear Walls" 12 (12): 1-19, 2020

10 Federal Emergency Management Agency, "Prestandard and Commentary for the Seismic Rehabilitation of Buildings (FEMA 356)"

11 Federal Emergency Management Agency, "NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Buildings (FEMA 450)"

12 Faustino, P., "Lateral Cyclic Behaviour of RC Columns Confined with Carbon Fibres" 5 : 196-206, 2016

13 유석형 ; 김달기, "Knee - Brace를 활용한 비정형 필로티 건물의 내진보강방안에 대한 해석적 연구" 한국구조물진단유지관리공학회 24 (24): 35-42, 2020

14 최경은 ; 김민준 ; 김두산 ; 김형국 ; 김길희, "GFRP 시트로 보강된 철근콘크리트 보의 비틀림 거동에 관한 실험적 연구" 한국콘크리트학회 34 (34): 33-42, 2022

15 신지욱 ; 이기학 ; 정성훈 ; 이한선 ; 김진구, "Experimental and Analytical Studies on Buckling-Restrained Knee Bracing Systems with Channel Sections" 한국강구조학회 12 (12): 93-106, 2012

16 Tastani, S. P., "Detailing Procedures for Seismic Rehabilitation of Reinforced Concrete Members with Fiber Reinforced Polymers" 30 (30): 450-461, 2008

17 Stathopoulos, K. G., "Accidental Design Eccentricity: Is It Important for the Inelastic Response of Buildings to Strong Earthquakes" 30 (30): 782-797, 2010

18 "ASTM A1035/A1035M, Standard Specification for Deformed and Plain, Low-Carbon, Chromium, Steel Bars for Concrete Reinforcement"

19 "ACI Committee 318, Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary"

20 Kim, S. Y., "A Study on Seismic Ductility Reinforcing Method of Piloti Structure for the Multi-Unit Housing" Land & Housing Institute 2020

21 Sheikh, S. A., "A Performance-Based Approach for the Design of Confining Steel in Tied Columns" 94 (94): 421-432, 1997