SEISMIC IMPACT DAMPING MECHANISMS OF SHAPE MEMORY ALLOY PSEUDO-RUBBER ABSORBERS ON ADJACENT SDOF STRUCTURES

ZHANG Pu; LI Suchao; FANG Qinghe; WANG Chenyu; WANG Zhiyuan

doi:10.13204/j.gyjzG21052502

Volume 51 Issue 11

Mar. 2022

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ZHANG Pu, LI Suchao, FANG Qinghe, WANG Chenyu, WANG Zhiyuan. SEISMIC IMPACT DAMPING MECHANISMS OF SHAPE MEMORY ALLOY PSEUDO-RUBBER ABSORBERS ON ADJACENT SDOF STRUCTURES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 13-18. doi: 10.13204/j.gyjzG21052502

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ZHANG Pu, LI Suchao, FANG Qinghe, WANG Chenyu, WANG Zhiyuan. SEISMIC IMPACT DAMPING MECHANISMS OF SHAPE MEMORY ALLOY PSEUDO-RUBBER ABSORBERS ON ADJACENT SDOF STRUCTURES[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 13-18. doi: 10.13204/j.gyjzG21052502

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SEISMIC IMPACT DAMPING MECHANISMS OF SHAPE MEMORY ALLOY PSEUDO-RUBBER ABSORBERS ON ADJACENT SDOF STRUCTURES

doi: 10.13204/j.gyjzG21052502

1. Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology,Harbin 150090, China;
2. Department of Civil Engineering, Harbin Institute of Technology at Weihai,Weihai 264209, China

Received Date: 2021-05-25
Available Online: 2022-03-29

Abstract

Abstract

Impact of adjacent structures may cause acceleration amplification, stress damage even collapse during strong ground motions. Based on the characteristics of nonlinear strain hardening and friction energy dissipation in shape memory alloy pseudo-rubber(SMAPR), the seismic impact processes in adjacent single-degree-freedom(SDOF) structures with/without SMAPR absorber were compared, and parametric analysis was conducted to study the effects of axial stiffness of SMAPR on structure impact pounding response. The results showed that SMAPR was characterized by high elasticity, high damping and nonlinear strain hardening, which could prolong the impact time, and effectively reduce the impact response over 90%. Axial stiffness was the sensitive parameter to affect the control response, and the response of shock absorption increased with the decrease of axial stiffness.
- shape memory alloy pseudo-rubber,
- nonlinear stress hardening,
- seismic impact,
- SDOF structure,
- shock absorption

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References(17)

References

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