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| Seismic behavior of steel tubed reinforced concrete column joints with lead viscoelastic dampers |
| WANG Qiuwei1,2,JING Xuanguang1,SHI Qingxuan1,2,LI Xuemei1 |
| 1.School of Civil Engineering,Xi’an University of Architecture and Technology, Xi’an 710055, China;
2.Key Lab of Structural Engineering and Earthquake Resistance,Ministry of Education, Xi’an University of Architecture and Technology, Xi’an 710055, China |
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Abstract In view of the weak seismic behavior of steel tubed reinforced concrete (STRC) column joints, an improved lead viscoelastic damper is proposed for strengthening. Based on the ABAQUS working platform, a finite element model was established for the lead viscoelastic damper specimen. The hysteresis and skeleton curves, energy dissipation, and fatigue behavior obtained from numerical calculations were compared with the experimental results, and the two were in good agreement. On this basis, the effects of lead core diameter, lead core arrangement, and composite viscoelastic thickness ratio on the mechanical properties of lead viscoelastic dampers were explored. The results show that compared to the fan-shaped lead viscoelastic damper, the improved quadrilateral lead viscoelastic damper exhibits better mechanical performance; As the diameter of the lead core increases, the energy dissipation capacity indicators of the damper are significantly improved; It is recommended to take 2 lead cores, with a ratio of 6% to 8% between the lead core area and the composite viscoelastic layer area, and a thickness ratio of approximately 0.67 for the composite viscoelastic body. Establish specimen models of lead viscoelastic dampers reinforced STRC column joints with different arrangement schemes, compare and analyze their failure modes, hysteresis characteristics, and stirrup stress, and provide reasonable arrangement schemes for practical engineering reference.
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Received: 01 June 2023
Published: 28 March 2024
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| [1] 闫标. 圆钢管约束RC柱—RC梁框架节点静力与抗震性能研究[D]. 兰州: 兰州大学, 2018.
YAN Biao. Research on the static and seismic behavior of circular tubed RC column to RC beam joints[D]. Lanzhou: Lanzhou University, 2018.
[2] OH Sang-hoon, KIM Young-ju, RYU Hong-sik. Seismic performance of steel structures with slit dampers[J]. Engineering Structures, 2009, 31(9): 1997-2008.
[3] LATOUR M, PILUSO V, RIZZANO G. Experimental analysis of beam-to-column joints equipped with sprayed aluminium friction dampers[J]. Journal of Constructional Steel Research, 2018, 146: 33-48.
[4] MORGEN B G, KURAMA Y C. Seismic design of friction-damped precast concrete frame structures[J]. Journal of Structural Engineering, 2007, 133(11): 1501-1511.
[5] KIM J, CHOI H, MIN K W. Use of rotational friction dampers to enhance seismic and progressive collapse resisting capacity of structures[J]. The structural design of tall and special buildings, 2011, 20(4): 515-537.
[6] MIRZABAGHERI S, SANATI M, AGHAKOUCHAK A, et al. Experimental and numerical investigation of rotational friction dampers with multi units in steel frames subjected to lateral excitation[J]. Archives of Civil and Mechanical Engineering, 2015, 15(2): 479-491.
[7] 闫维明, 刘猛, 李振宝, 等. 新型铅剪切阻尼器的数值模拟试验研究[J]. 北京工业大学学报, 2008, 34(12): 1286-1290.
YAN Weiming, LIU Meng, LI Zhenbao, et al. Theoretical and experimental studies on a new lead shear damper[J]. Journal of Beijing University of Technology, 2008, 34(12): 1286-1290.
[8] 周云, 徐昕, 邹征敏, 等. 扇形铅粘弹性阻尼器的设计及数值仿真分析[J]. 土木工程与管理学报, 2011, 28(2): 1-6.
ZHOU Yun, XU Xin, ZOU Zhengmin, er al. Design and Numerical Simulation Analysis of Sector Lead Viscoelastic Damper [J]. Journal of Civil Engineering and Management, 2011, 28(2): 1-6.
[9] 吴从晓, 周云, 徐昕, 等. 扇形铅黏弹性阻尼器滞回性能试验研究[J]. 建筑结构学报, 2014, 35(4): 199-207.
WU Congxiao, ZHOU Yun, XU Xin, et al. Experimental investigation on hysteretic performance of sector lead viscoelastic damper [J], Engineering Mechanics, 2014, 35(4): 199-207.
[10] 吴从晓, 徐昕, 周云, 等. 扇形铅粘弹性阻尼器恢复力模型及设计方法研究[J]. 振动与冲击, 2015, 34(12): 18-22.
WU Congxiao, XU Xin, ZHOU Yun, et al. Restoring force model and design method of sector lead viscoelastic damper[J]. Journal of Vibration and Shock, 2015, 34(12): 18-22.
[11] 王艮平, 张超, 邓雪松, 等. 扇形铅黏弹性阻尼器加固RC框架的抗震性能试验研究[J]. 土木工程学报, 2016, 49(10): 41-48.
WANG Genping, ZHANG Chao, DENG Xuesong, et al. Experimental study on seismic performance of RC frame retrofitted with sector lead viscoelastic dampers [J]. China Civil Engineering Journal, 2016, 49(10): 41-48.
[12] ZHANG C, HUANG W, ZHOU Y, et al. Experimental and numerical investigation on seismic performance of retrofitted RC frame with sector lead viscoelastic damper[J]. Journal of Building Engineering, 2021, 44: 103218.
[13] ZABIHI A, TSANG H H, GAD E F, et al. Seismic retrofit of exterior RC beam-column joint using diagonal haunch[J]. Engineering Structures, 2018, 174: 753-767.
[14] JG/T 209-2012 建筑消能阻尼器[S]. 北京: 中国标准出版社, 2012.
JG/T 209-2012 Dampers for vibration energy dissipation of buildings [S]. Beijing: Standards Press of China, 2012.
[15] 郑明军, 王文静, 陈政南, 等. 橡胶 Mooney-Rivlin 模型力学性能常数的确定[J]. 橡胶工业, 2003, 50(8): 462-465.
ZHENG Mingjun, WANG Wenjing, CHEN Zhengnan, et al. Determination for mechanical constants of rubber Mooney-Rivlin model [J]. China Rubber Industry, 2003, 50(8): 462-465.
[16] 明杰婷. 橡胶材料粘弹性本构模型的研究及其在胎面橡胶块上的应用[D]. 吉林：吉林大学, 2016.
MING Jieting, Liang X W, Li F Y, et al. The research of viscoelastic constitutive model for rubber material and its application in tread block of tires[D]. Jilin: Jilin University, 2016.
[17] 张恒. 扇形粘弹性阻尼器试验研究与有限元模拟[D]. 中国矿业大学, 2018.
ZHANG Heng. Experimental study and finite element simulation of sector visco-elastic damper [D]. China University of Mining and Technology, 2016.
[18] 钟振华. 粘弹性阻尼器性能试验及在装配式剪力墙中的应用研究[D]. 南京：东南大学, 2020.
Zhong Zhen Hua. Experimental research on properties of viscoelastic dampers and its application in prefabricated shear wall[D]. Nanjing: Southeast University, 2020.
[19] 赵宪忠, 温福平. 钢骨约束混凝土的约束机制及其应力-应变模型建立[J]. 工程力学, 2018, 35(5): 36-46.
Zhao Xian Zhong, Wen Fu Ping. Theoretical study on confinement mechanism and stress-strain model for steel confined concrete in SRC columns[J]. Engineering Mechanics, 2018, 35(5): 36-46. |
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