This study proposed a convenient seismic design procedure for buckling-restrained braced frames based ... buckling-restrained braces, and artificial earthquake records were used for verification of the proposed ... area of each brace is computed so that all the plastic energy is dissipated by the brace.
buckling-restrained braces using a time-dependent element. ... The buckling-restrained brace that showed the largest energy dissipation capacity among the test specimens ... assumed that the first story of the damaged building under the first earthquake was retrofitted with the buckling-restrained
The main test parameters included the FRP Sheet and Buckling-restrained braces. ... The strengthening effect of CFRP sheet and AFRP sheet with buckling-restrained brace for Beam-Column ... Test results indicated that CFRP Sheet with the buckling-restrained brace system significantly increased
with CFRP sheet and BRB (Buckling-Restrained Brace) under sustained axial and cyclic lateral loads. ... 변위에 따른 최대, 최소하중은 하중-변위 관계를 분석함으로써 평가되어지며, 하중과 강성의 관계는 비교구간의 유효강성 분석에 의해 평가된다. ... 본 연구의 목적은 일정 축하중과 반복횡하중 하에서 탄소섬유시트와 비좌굴 가새로 보강된 보-기둥 시험체의 횡방향 거동 평가를 통하여 사용된 보강 방법의 구조적 성능을 검증하는 것이다.
..PAGE:1 비좌굴 가새 (Buckling-Restrained Braces) ..PAGE:2 ■ 개발배경 극한하중 작용시 순철골 가새골조보다 우수 최근 건설업계에서 관심이 높아지고 ... 압축력을 받을 때 가새에 횡좌굴이나 국부좌굴이 발생하여 구조적 불안정성을 보이는 것을 억제하거나 방지할 수 있는 비좌굴 가새에 대한 연구를 진행해 왔다. ..PAGE:9 비좌굴 가새(Buckling-Restrained ... 현재 개발되어 있거나 개발되고 있는 비좌굴 가새의 종류로는 일본제철에서 제조되는 비부착 가새(Unbonded Brace), 대만의 BIB(Buckling Inhibited Brace
Buckling Restrained Braces can not only express the strength considered at the time of design, but also ... , specimen(BRB-R) combined with a buckling restraint ring and Specimen(BRB-EP) filled with engineering ... The physical characteristics and damping effect may be different according to the buckling prevention
An idealized bracing system is configured to restrain lateral motion. but not rotation. ... buckling of the beam. ... as well as the beam to capture the system buckling.
성능 실험방법 AISC에서는 Sabelli(2003)의 연구결과를 토대로 “Seismic Provisions for Buckling-Restrained Braces(2005)”을 통해 ... 비좌굴 가새의 표준성능 Recommended Provisions for Buckling-Restrained Braced Frames(AISC, 2005)에서 정의하고 있는 비좌굴 가새의 ... Restrained Braced Frames에서 제시하고 있는 비좌굴 가새의 단면적 산정식은 다음과 같이 나타난다.
When buckling-restrained braces are used instead of conventional braces, the structures showed more ductile ... In this study 3- and 6-story flat plate structures designed only for gravity load are retrofitted with ... behavior, especially in the 3-story structure.
steel moment-resisting frames(MRF), buckling restrained braced frames(BRBF) and a damage tolerant braced ... In this study the seismic energy demands in multi story structures, such as three-, eight-, and twenty-story ... In equivalent static nonlinear analysis and in energy-based design, the structures are generally transformed
In order to improve the wind performance of buckling-restrained braces (BRBs), Hybrid buckling-restrained ... braces (H-BRBs) have been studied in Korea. ... In this study, the nonlinear time history analyses have been performed on the parameters such as brace
strength-based design procedure for structures with buckling-restrained braces. ... According to analysis results of three- and eight-story buckling-restrained braced frame structures designed ... In this study seismic design procedure for buckling-restrained braced frame systems was proposed using
schemes are investigated: buckling-restrained braces, zipper columns, V-shaped cables. ... The chevron braced frames designed without considering the unbalanced force induced in floor beams tend ... To enhance the seismic performance of OCBF chevron braced frames the effect the following three retrofit
building designed by past provision(UBC, Uniform Building Code) before and after retrofitted with BRB (Buckling-Restrained ... Brace) was evaluated using response modification factor(R-factor). ... When comparing the R-factor of the current provision with the calculated R-factor, the results were different
The experiment was carried out to investigate lateral retrofitting effects by FRP and BRB (Buckling-Restrained ... Brace) for beam-column elements. ... 결과로서, 반복 횡하중 하의 비보강 보-기둥 연결부재의 해석과 실험결과가 비교적 일치함을 확인하였다.
To investigate the effects of residual displacement, the structural responses of buckling-restrained ... braced frames (BRBF) and special moment-resisting frames (SMRF) were evaluated for design-based excitations ... Therefore, in order to minimize the post-event repair cost, a reduction of residual drift is required
In this study, a seismic retrofit scheme of a Buckling-Restrained Knee Brace (BRKB) was developed for ... non-seismic 2-story steel buildings, including small-scale buildings, using a fragility contour method ... In order to prevent the loss of life and property under earthquake loadings, the small-scale building
Increasing stiffness and strength of the buildings using buckling-restrained braces and shear walls are ... Buckling-restrained braces and shear walls are considered for seismic retrofit of the reference buildings
buckling restrained braced frames(BRBF), and hinge-connected framed structures with buckling restrained ... braces(HBRBF) subjected to various earthquake ground excitations was investigated. ... In this study, a story-wise distribution of hysteretic energy in steel moment resisting framse(MRF),