Mechanical properties of reinforced-concrete rocking columns based on damage resistance

Chunyang Zhu; Yanqing Cui; Li Sun; Shiwei Du; Xinhui Wang; Haochuan Yu

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자료유형: 학술저널

저자정보: Chunyang Zhu (Shenyang Jianzhu University) Yanqing Cui (Shenyang Jianzhu University) Li Sun (Shenyang Jianzhu University) Shiwei Du (Shenyang Jianzhu University) Xinhui Wang (Shenyang Jianzhu University) Haochuan Yu (Shenyang Jianzhu University)

저널정보: 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.80 No.6

발행연도: 2021.12

수록면: 737 - 747 (11page)

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The objective of seismic resilience is to maintain or rapidly restore the function of a building after an earthquake. An efficient tilt mechanism at the member level is crucial for the restoration of the main structure function; however, the damage resistance of the members should be the main focus. In this study, through a comparison with the classical Flamant theory of local loading in the elastic half-space, an elastomechanical solution for the axial-stress distribution of a reinforced-concrete (RC) rocking column was derived. Furthermore, assuming that the lateral displacement of the rocking column is determined by the contact surface rotation angle of the column end and bending and shear deformation of the column body, the load?lateral displacement mechanical model of the RC rocking column was established and validated through a comparison with finiteelement simulation results. The axial-compression ratio and column-end strength were analyzed, and the results indicated that on the premise of column damage resistance, simply increasing the axial-compression ratio increases the lateral loading capacity of the column but is ineffective for improving the lateral-displacement capacity. The lateral loading and displacement of the column are significantly improved as the strength of the column end material increases. Therefore, it is feasible to improve the working performance of RC rocking columns via local reinforcement of the column end.

#elastic half-space #mechanical model #resilience #rocking column #stress distribution

참고문헌 (22)

참고문헌 신청

Xingchong Chen / 2020 / Seismic performance and design of bridge piers with rocking isolation / Structural Engineering and Mechanics, An Int＇l Journal 73(4):447~454

Chi, H. / 2009 / Development of post-tensioned column base connection for self-centering seismic resistant steel frame

Christopoulos, C. / 2014 / Self-centering energydissipative (SCED) brace: overview of recent developments and potential applications for tall buildings / Proceedings of International Conference on Sustainable Development of Critical Infrastructure

Chung, Y. L. / 2019 / Performance evaluation of a rocking steel column base equipped with asymmetrical resistance friction damper / Earthq. Struct 17(1):49~61

Cui, Y. / 2017 / Investigation of seismic performance of tri-axial reinforced concrete frames with selfcentering capacity / Proceedings of 16th World Conference on Earthquake Engineering(16WCEE)

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