Shear walls are important vertical and lateral bearing element in structures. While shear walls with openings are fragile due to stress concentration and the quasi-brittle behavior of concrete in tension. Therefore, additional strengthening rebars are required for the shear walls with openings. However, it aggravates the problem of dense reinforcement which increases the steel cage manufacturing and concrete compaction problem and still lacks countermeasures against concrete damage and cracking. To reduce the rebar demand and improve the damage tolerance of squat reinforced concrete (RC) shear walls with openings, an optimized steel-fiber-reinforced concrete (SFRC) was adopted to understand the seismic performance by cyclical loading test. The tested specimens included a plain RC shear wall without strengthening bar around the opening (for comparison), an SFRC shear wall, and an SFRC shear wall with a reduced distributed steel bar. This paper mainly studies the effect of using SFRC to improve the seismic performance of the open shear wall and to replace the reinforcement around the opening and the shear reinforcement. The hysteresis curves, skeleton curves, stiffness degradation, bearing capacity degradation and energy dissipation of the specimens were analyzed. The results show that the failure can be delayed and relieved, the deformation capacity and energy dissipation can considerably improve, and rebars can be partially replaced by using SFRC.
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China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou, Peoples R ChinaChina Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China
Liu, Meng
Yuan, Guanglin
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China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China
China Univ Min & Technol, Jiangsu Key Lab Environm Impact & Struct Safety En, Xuzhou, Peoples R China
China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou, Peoples R ChinaChina Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China
Yuan, Guanglin
Sun, Wen
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China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou, Peoples R ChinaChina Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China
Sun, Wen
Shu, Qianjin
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China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China
China Univ Min & Technol, Jiangsu Key Lab Environm Impact & Struct Safety En, Xuzhou, Peoples R China
China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou, Peoples R ChinaChina Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China
Shu, Qianjin
Zhao, Zhiyuan
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China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou, Peoples R ChinaChina Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China
Zhao, Zhiyuan
Lu, Limin
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China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China
China Univ Min & Technol, Jiangsu Key Lab Environm Impact & Struct Safety En, Xuzhou, Peoples R China
China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou, Peoples R ChinaChina Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China
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Univ Zagreb, Fac Civil Engn, Dept Struct, Kaciceva 26, Zagreb 10000, CroatiaUniv Zagreb, Fac Civil Engn, Dept Struct, Kaciceva 26, Zagreb 10000, Croatia
Curkovic, Ivan
Skejic, Davor
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Univ Zagreb, Fac Civil Engn, Dept Struct, Kaciceva 26, Zagreb 10000, CroatiaUniv Zagreb, Fac Civil Engn, Dept Struct, Kaciceva 26, Zagreb 10000, Croatia
Skejic, Davor
Dzeba, Ivica
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Univ Zagreb, Fac Civil Engn, Dept Struct, Kaciceva 26, Zagreb 10000, CroatiaUniv Zagreb, Fac Civil Engn, Dept Struct, Kaciceva 26, Zagreb 10000, Croatia