预制混凝土
结构工程
材料科学
螺旋(铁路)
剪力墙
消散
失效模式及影响分析
延展性(地球科学)
剪切(地质)
复合材料
刚度
抗弯强度
压缩(物理)
极限荷载
工程类
有限元法
物理
蠕动
热力学
机械工程
作者
Wei Xue,Qinghui Huang,Yang Li
标识
DOI:10.1016/j.jobe.2022.104467
摘要
In this paper, full-scaled precast concrete shear walls (PCSWs) with spiral-confined lap connections were tested under low reversed cyclic loading tests with axial compression ratios of 0.12 and 0.24. Both one-row and two-row connections were considered in the test program. The spirals in the connections were used to provide additional confinement and to shorten the lap length (a reduced lap length of 1.0laE was used). Results showed that all PCSWs suffered flexural-shear failure mode, and their load-carrying capacity, hysteretic behavior, energy dissipation and stiffness degradation characteristics were similar to the monolithic reference specimens. The ductility of the PCSWs under the axial compression of 0.12 was 3.86 and 4.00, which was close to that of the monolithic wall (4.19). Under the axial compression of 0.24, the spiral-confined lap splices prevented the earlier failure of the PCSWs, leading to significantly higher ductility (4.08 and 4.07) than the monolithic wall (3.05). The test results also indicated that the reduced lap length of 1.0laE was validated to be acceptable under simulated earthquake actions. In addition, the PCSWs with one-row and two-row connections exhibited comparable structural performance, and they could both be considered as emulative structures.
科研通智能强力驱动
Strongly Powered by AbleSci AI