Restoring Force Model Research on Joint of Circular Tubed Steel-Reinforced Concrete Column | Zendy

Yan Dai | Zendy; Shaofeng Nie | Zendy; Tianhua Zhou | Zendy; Yichun Xu | Zendy; Jingrong Peng | Zendy

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Restoring Force Model Research on Joint of Circular Tubed Steel-Reinforced Concrete Column

Author(s) -

Yan Dai,

Shaofeng Nie,

Tianhua Zhou,

Yichun Xu,

Jingrong Peng

Publication year - 2021

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/2021/9021167

Subject(s) - structural engineering , stiffness , joint (building) , dissipation , reciprocating motion , hysteresis , restoring force , reinforced concrete column , displacement (psychology) , column (typography) , materials science , engineering , connection (principal bundle) , mechanical engineering , physics , quantum mechanics , gas compressor , thermodynamics , psychology , psychotherapist

In this paper, two joints of circular tubed steel-reinforced concrete (CTSRC) column were designed. The load-displacement hysteretic curve and skeleton curve of this new type of joint are obtained by the pseudostatic test under low cycle cyclic load on the top of the column. The results show that this new type of joint has good seismic energy dissipation performance. On the basis of the test, a three-fold skeleton curve model considering three characteristic points of yield, limit, and failure is proposed, and the expression of skeleton curve model is given. The load and unload stiffness degradation law of specimens under reciprocating load is studied, and the expression of stiffness degradation law is given. The hysteresis law of the new type joint specimens is described in detail. The validity of the model is verified by comparing the experimental curve with the model curve. The model can be used in the elastic-plastic seismic time-history analysis on the joint of circular tubed steel-reinforced concrete (CTSRC) column.

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