PSI - Issue 66

Jiaqi Li et al. / Procedia Structural Integrity 66 (2024) 221–228 Author name / Structural Integrity Procedia 00 (2025) 000–000

227

7

2.0×10 5

2.0×10 5

LYP100 LYP160 LYP225

LYP100 LYP160 LYP225

1.5×10 5

1.5×10 5

1.0×10 5

1.0×10 5

5.0×10 4

5.0×10 4

0.0

0.0

− 5.0×10 4

Load (N)

− 5.0×10 4

Load (N)

− 1.0×10 5

− 1.0×10 5

− 1.5×10 5

− 1.5×10 5

− 2.0×10 5

− 2.0×10 5

− 100 − 80

− 60

− 40

− 20 0 20 40 60 80 100

− 100

− 50

0

50

100

Displacement (mm)

Displacement (mm)

Fig. 12. Skeleton curves

Fig. 11. Hysteresis curves

5. Conclusions

 A novel energy dissipation joint is proposed, which utilizes the good connection and fatigue performance of CL composite dowels and the good ductility and hysteresis performance of low yield point steel to achieve seismic energy dissipation of the joint, and has a simple structure, good overall integrity, low manufacturing cost, easy construction.  Numerical simulations are conducted to study and compare the seismic performance of the new energy dissipation joint with that of ordinary beam-column joints. The results indicate that the hysteresis curve of the energy dissipation joint is fuller, with better hysteresis performance and stronger energy dissipation capacity and the cyclic stiffness of the energy dissipation joint is greater.  The effect of low yield point steel strength on the energy dissipation capacity of the energy dissipation joint is investigated. The results indicate that the strength of low yield point steel has little effect on the hysteresis performance of the energy dissipation joint and it is recommended to use LYP100. Acknowledgements This work was supported by Science and Technology Project of Department of Transport of Shaanxi Province [grant numbers 22-23K] References [1] Al-Jumaily, G. A., & Rahman, A. A. A. (2021, May). Simulation of reinforced concrete beam-column joints under cyclic loading. In Journal of Physics: Conference Series (Vol. 1895, No. 1, p. 012052). IOP Publishing. [2] Rahim, K. A. N. A. (2019). Modelling of reinforced concrete beam-column joint for cyclic earthquake loading. American Journal of Civil Engineering and Architecture, 7(2), 67-114. [3] Kader, A. N. B. A. , Osman, S. A. , & Yatim, M. Y. M. . (2019). A state-of-the-art review on retrofitting beam-column joint using gfrp with nsm technique under seismic. International Journal of Engineering and Technology. [4] Yamaguchi, T., Nakata, Y., Takeuchi, T., Ikebe, T., Nagao, T., Minami, A., & Suzuki, T. (1998). Seismic control devices using low-yield point steel; Gokuteikofukutenko, teikofukutenko wo riyoshita seishin gijutsu no kaihatsu. Shinnittetsu Giho. [5] Sugisawa, M., Saeki, E., Nakamura, H., Hirabayashi, R., Ichikawa, Y., Ueki, M., & Hokari, M. (1995). Development of earthquake resistant, vibration control, and base isolation technology for building structures. Nippon Steel Technical Report, 66, 37-46. [6] Shih, M. H., & Sung, W. P. (2005). A model for hysteretic behavior of rhombic low yield strength steel added damping and stiffness. Computers & structures, 83(12-13), 895-908.