Experimental study on seismic behavior of prefabricated self-centering concrete-filled square steel tubular frame with slotted energy-dissipating plates

被引：0
|
作者：
Xie C. [1 ]
Wang X. [1 ]
Guo Y. [1 ]
Yang B. [1 ]
Wang H. [1 ]
机构：
[1] School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2024年 / 45卷 / 08期
关键词：
frame-expansion effect; prefabrication construction; quasi-static test; seismic behavior; self-centering frame; slotted energy-dissipating plate;
D O I：
10.14006/j.jzjgxb.2022.0503
中图分类号：
学科分类号：
摘要：
A prefabricated self-centering concrete-filled square steel tubular frame (PSC-CFSTF) with slotted energy-dissipating plates was proposed to address the issue of the conflict between energy-dissipation and self-centering capacity. In the new solution, post-tensioned strands are independently arranged in every span for facilitating construction. Low-cycle loading tests were carried out on 1/ 2-scale four single-span two-story specimens considering different thicknesses of energy-dissipating plates and loading histories, followed by theoretical analysis considering frame-expansion effects. The results demonstrate that the hysteresis curve of PSC-CFSTF exhibits a typical double flag shape and the residual drift of all specimens is approximately 0. 20% after being loaded to 2. 0% story drift. Damage is only found in the replaceable energy-dissipating plates while the structural components remain usable. Besides, restoration is confirmed at 2. 0% story drift with favorable damage-control ability and resilience. Reducing the width of bars but keeping same section area can increase the recentering ability while maintaining the same strength. Frame expansion leads to larger axial force in the beam and different shear forces of the column bases. Moreover, the proposed mechanical model can well predict the axial force in beams and strands, and errors is less than 10%, which can facilitate structural design. © 2024 Science Press. All rights reserved.
引用
收藏
页码：154 / 167
页数：13
相关论文
共 25 条
  • [1] PAN Zhenhua, PAN Peng, QIU Fawei, Et al., Analysis of self-centering steel structures’ development, China Civil Engineering Journal, 43, pp. 403-410, (2010)
  • [2] ZHOU Ying, LU Xilin, State-of-the-art on rocking and self-centering structures, Journal of Building Structures, 32, 9, pp. 1-10, (2011)
  • [3] ZHOU Ying, WU Hao, GU Anqi, Earthquake engineering: from earthquake resistance, energy dissipation, and isolation, to resilience, Engineering Mechanics, 36, 6, pp. 1-12, (2019)
  • [4] LU Xilin, WU Dayang, ZHOU Ying, State-of-the-art of earthquake resilient structures, Journal of Building Structures, 40, 2, pp. 1-15, (2019)
  • [5] RICLES J M, SAUSE R, GARLOCK M M, Et al., Posttensioned seismic-resistant connections for steel frames, Journal of Structural Engineering, 127, 2, pp. 113-121, (2001)
  • [6] GARLOCK M M, RICLES J M, SAUSE R., Experimental studies of full-scale posttensioned steel connections, Journal of Structural Engineering, 131, 3, pp. 438-448, (2005)
  • [7] CHRISTOPOULOS C, FILIATRAULT A, UANG C M, Et al., Posttensioned energy dissipating connections for moment-resisting steel frames, Journal of Structural Engineering, 128, 9, pp. 1111-1120, (2002)
  • [8] CHOU C C, CHEN J H, CHEN Y C, Et al., Evaluating performance of post-tensioned steel connections with strands and reduced flange plates [J], Earthquake Engineering & Structural Dynamics, 35, 9, pp. 1167-1185, (2006)
  • [9] VASDRAVELLIS G, KARAVASILIS T L, UY B., Large-scale experimental validation of steel posttensioned connections with web hourglass pins, Journal of Structural Engineering, 139, 6, pp. 1033-1042, (2013)
  • [10] KIM H J, CHRISTOPOULOS C., Friction damped posttensioned self-centering steel moment-resisting frames, Journal of Structural Engineering, 134, 11, pp. 1768-1779, (2008)
123