Seismic performance of concrete columns confined by high‑strength stirrups

• Autorzy: Hou Chongchi , Zheng Wenzhong , Liu Pengfei , Wang Qinghe , Qi ShaoBo

Identyfikatory

DOI

10.1007/s43452-023-00607-9

• Języki publikacji: EN

Abstrakty

EN

The concrete columns confined by high-strength stirrups exhibited higher bearing capacity and better deformation ability. Based on the test results of concrete columns confined by high-strength stirrups under lateral cyclic loading, it is found that stirrup yield strength could not be used directly in calculating bearing capacity, because the high-strength stirrup could not yield at the peak point. Moreover, according to the seismic performance of a total of 49 sets of confined concrete columns from this paper and other 5 research papers, an easy-to-use model of skeleton curve is proposed by using a set of empirical equations to calculate the characteristic points of skeleton curve. Furthermore, based on the proposed model of skeleton curve, hysteretic rules are developed for the unloading and reloading stages by providing calculating formula of unloading stiffness and ignoring the effect of strength degradation. Finally, the proposed model of skeleton curve and hysteretic rules are verified and evaluated by comparing the calculated curves and experimental curves.

Słowa kluczowe

EN

concrete column; seismic performance; high-strength transverse reinforcement; skeleton curve; hysteretic rule

PL

kolumna betonowa; wydajność sejsmiczna; krzywa szkieletowa

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 2
• Strony: art. no. e69, 2023
• Opis fizyczny: Bibliogr. 33 poz., rys., tab., wykr.

Twórcy

autor

Hou Chongchi

• School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

autor

Zheng Wenzhong

• School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

autor

Liu Pengfei

• School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

autor

Wang Qinghe

• School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

autor

Qi ShaoBo

• State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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