Cyclic Behavior of HPFRCC Coupling Beams with Bundled Diagonal Bars

International Journal of Concrete Structures and Materials

Jin-Wook Kang¹  Sang Whan Han¹  Hyun-Woo Jee¹  Kihak Lee²  Myoungsu Shin³ 

[1] Department of Architectural Engineering, Hanyang University;Department of Architectural Engineering, Sejong University;School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST);

关键词: coupled shear wall;    coupling beam;    diagonal reinforcement;    high-performance fiber-reinforced cementitious composite;   

DOI  :  10.1186/s40069-018-0271-6

来源: DOAJ

【 摘 要 】

Abstract Coupled shear walls are efficient in resisting lateral forces induced by winds and earthquakes. However, it is difficult to construct coupled shear walls particularly because current design codes require complex reinforcing details within coupling beams. The objective of this study was to develop simple reinforcement details for diagonally reinforced coupling beams; reducing transverse steel by use of high-performance fiber-reinforced cementitious composites (HPFRCCs) and bundling diagonal bars are explored. Four coupling beam specimens with length-to-depth aspect ratios of 2.0 or 3.5 were fabricated and tested under cyclic lateral displacements. The test results revealed that HPFRCC coupling beams with bundled diagonal bars and widely spaced transverse reinforcement (one-half the amount of reinforcement required by current seismic codes) exhibited excellent seismic performance compared with ordinary concrete coupling beams having code-required distributed diagonal reinforcement and transverse reinforcement.

【 授权许可】

Unknown