|
|
|
| Seismic behaviors of steel tubed RC columns with built-in non through section steel |
| HAO Hang1,2，WANG Qiuwei1,3，SHI Qingxuan1,3，WANG Lu1 |
1.College of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, China;
2.College of Civil Engineering, Shaanxi Polytechnic Institute, Xianyang 712000, China;
3.Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education, Xi’an University of Architecture and Technology, Xi’an 710055, China |
|
|
|
Abstract A construction scheme of steel tubed reinforced concrete (STRC) column joints strengthened by built-in section steel is proposed.. To clarify the mechanical properties of internal non-through shape steel STRC columns in the joints, six STRC columns with different internal lengths of the section steel and two columns with no shape steel were designed. Though the low cyclic load test and finite element simulation, the failure characteristics, hysteresis curve, skeleton curve, the strain of steel tube and section steel were analyzed, and the effects of the internal length and axial compression ratio of section steel on seismic performance of the column were discussed. The results show that bending failure occurs in the root of the STRC column. The length of section steels has a significant influence on the damage degree and crack development range of the concrete. All specimens still have stable bearing capacity at the late loading stage. The capacity and deformation capacity of STRC columns with built-in section steel have been enhanced in varying degrees. When the built-in length is shorter, the resistance bending is not easy to play, but increasing the built-in length can enlarge the bending range of the section steel and significantly improve the seismic resistance of the specimen. When the built-in length exceeds a certain value, the section steel is more fully bent and the performance tends to be stable. The main steel tube mainly provides the lateral constrained effect, while the middle tube is mainly involved in bending resistance of the section, and its bending resistance is more than 30%. With the increases of axial pressure ratio, the bearing capacity of the specimen increases, but the ductility reduces. Combined with the test data, the parameter expansion analysis is carried out, and the suggested value of built-in non-penetrating steel length which meets the requirements of bearing capacity and deformation of composite columns is given.
Keywords: non-through section steel; steel tubed reinforced concrete column; axial compression ratio; the low cyclic load test; seismic performance
|
|
Received: 01 September 2021
Published: 28 November 2022
|
|
|
|
[1] Tomii M, Sakino K, Xiao Y, et al. Earthquake resisting hysteretic behavior of reinforced concrete short columns confined by steel tube[C].//Proceeding of the International Speciality Concference on Concrete Filled Steel Tubular Structures, Harbin, China, Harbin Institute of Technology ,
1985:119-125.
[2] 肖岩.套管钢筋混凝土柱结构的发展和展望 [J].土木工程学报,2004,37(4): 8-12.
XIAO Yan. Development and prospects of tubed reinforced concrete column structures[J]. China civil engineering journal,
2004, 37(4): 8-12.
[3] Aboutaha R S, Machado R I.Seismic resistance of steel-tubed high-strength reinforced-concrete columns [J].Journal of
Structural Engineering,1999,125(5):485-494.
[4] Sun Y P, Sakino K.SAKINO. Earthquake-resisting performance of r/c columns confined by square steel tubes : Part 1 Columns under high axial load[J].Architectural Institute of Japan,1997,
62(501):
[5] Sun Y P, Sakino K,Yasuda K,et al. Earthquake-resisting performance of r/c columns confined by square steel tubes : Part 2 Effects of wall thickness of steel tube [J].Architectural
Institute of Japan,2000,65(531):
[6] Sun Y, Sakino K, Yasuda K,et al.Earthquake-resisting performance of r/c columns confined by square steel tubes : Part 3 Effects of shear span ratio of column [J].Architectural
Institute of Japan,2001,66(547):
[7] 周绪红, 张素梅, 刘界鹏.钢管约束钢筋混凝土压弯构件滞回性能试验研究与分析[J]. 建筑结构学报, 2008, 29(5): 75-84.
ZHOU Xuhong, ZHANG Sumei, LIU Jiepeng. Seismic behavior of steel tube confined reinforced concrete(RC)beam-
columns[J]. Journal of Building Structures, 2008, 29(5): 75-84
[8] Zhou X H, Zang X Z, Wang X D,et al.Seismic behavior of circular TSRC columns with studs on the steel section[J].
Journal of Constructional Steel Research,2017,137: 31-36.
[9] 周绪红, 刘界鹏, 张素梅.钢管约束型钢高强混凝土压弯构件的抗震性能研究 [J].土木工程学报,2010,43(9):1-11.
Zhou Xuhong, Liu Jiepeng, Zhang Sumei.Seism ic behavior and strength of tubed SRC beam-columns filled with high strength concrete[J]. China civil engineering journal,2010,
43(9):1-11.
[10] Gan D, Zhou X H, Liu J P,et al.Seismic behavior of thin-
walled circular and stiffened square steel tubed-reinforced-
concrete columns[J]. Science China Technological Sciences,
2019, 62: 511-520.
[11] 周绪红, 刘界鹏. 钢管约束混凝土柱的性能与设计[M].北京：科学出版社, 2010.
ZHOU Xuhong, LIU Jiepeng. Performance and design of concrete filled steel tube confined columns[M]. Beijing:
Science Press, 2010.
[12] 刘界鹏, 肖良才, 张素梅,等. 高纵筋率圆钢管约束混凝土结构梁柱节点轴压力学性能试验研究 [J].哈尔滨工业大学学报,2011,43(S2): 260-263.
LIU Jiepeng, XIAO Liangcai, ZHANG Sumei. Experimental study on static axial compression behavior of tubed RC beam-column joint with high longitudinal reinforcement ratio[J] Journal of Harbin institute of technology, 2011,
43(S2):260-263
[13] 丁志强, 傅先珺, 白超等.钢管约束型钢混凝土柱施工技术[J]. 结构施工, 2017, 39(7):1003-1010.
DING Zhiqiang, FU Xianjun, BAI Chao, et al. Construction Technology for Profile Steel and Concrete-Filled Steel Tube Column[J]. Structural Construction, 2017, 39(7): 1003-1010.
[14] 邱文亮, 田甜, 张哲.反复荷载作用下钢管混凝土组合桥墩抗震性能试验研究 [J].振动与击,2019,38(17):156-164+183.
QIU Wenliang, TIAN tian, ZHANG Zhe. Experimental study on the seismic behavior of steel tube reinforced concrete bridge columns under cyclic loading[J]. Journal of Vibration
and Shock, 2019,38(17):156-164+183.
[15] JGJ/T 471-2019. 钢管约束混凝土结构技术标准[S].北京：中国建筑工业出版社，2019.
JGJ/T 471-2019. Technical standard for steel tube confined concrete structure[S]. Beijing: China Architecture & Building
Press, 2019.
[16] GB/T 228.1-2010. 金属材料拉伸试验第1部分: 室温试验方法[S]. 北京: 中国质检出版社, 2010
GB/T 228.1-2010. Metallic materials-Tensile testing-Part 1: Method of testing at room temperature[S]. Beijing: Quality
Inspection of China, 2010
[17] Yan B, Liu J P, Zhou X H.Axial load behavior and stability strength of circular tubed steel reinforced concrete (SRC) columns [J].Steel and Composite Structures,2017,25: 545-556.
[18] 赵卫平, 雷永旺, 王振兴,等.钢管混凝土中内配钢骨与混凝土黏结性能试验 [J].哈尔滨工业大学学报,2020,52(8),
121-130.
Zhao Weiping, Lei Yongwang, Wang Zhenxing, et al .
Experimental study on bond performance between internal steel and concrete in concrete filled steel tube[J]. Journal of
Harbin institute of technology, 2020,52(8),121-130.
[19] Li W, Han L H.Seismic performance of CFST column to steel beam joint with RC slab: analysis[J].Journal of Constructional Steel Research,2011,67( 1): 127-139. |
| [1] |
LI Bin1, WANG Zhan1,2, WANG Peng2,3, PAN Jianrong1,2, FAN Yanjing1, QIN Jiangui1. Aseismic performance analysis of prefabricated wallboard with concealed braces connected on both sides[J]. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(9): 9-17. |
|
|
|
|
