材料科学
打滑(空气动力学)
马镫
复合材料
循环应力
消散
结构工程
磁滞
残余物
工程类
数学
算法
量子力学
热力学
物理
航空航天工程
作者
Jianyang Xue,Hechao Li,Rui Ren,Xin Zhang
标识
DOI:10.1016/j.engstruct.2021.113238
摘要
In order to investigate the cyclic bond behavior between H-shaped steel and recycled concrete, thirteen cyclic reversed push-out tests and one monotonic push-out test were carried out. The main parameters of the tests were recycled concrete aggregate (RCA) replacement percentage, thickness of concrete cover, stirrup ratio, recycled concrete strength and loading scheme. The experimental results indicate that the pinch effect on the hysteresis curves of load-slip is remarkable. The envelope curves can be divided into four stages: minimal slip stage, slip development stage, falling stage and residual stage. The bond stress of steel reinforced recycled concrete (SRRC) under cyclic reversed load declines by 40%∼50% comparing to SRRC under monotonic push-out load. Slip appears on both ends of the specimens firstly under cyclic reversed load. The influence of the main factors on the cyclic bond stress is analyzed. The energy dissipation mainly occurs in the falling stage and residual stage.
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