|
|
论文:2021,Vol:39,Issue(6):1320-1330 |
|
|
引用本文： |
|
|
石若利, 罗靓, 潘志成, 张军, 孙志颖, 顾淑娴, 李其伦. 钢管约束钢筋混凝土柱抗震设计方法及塑性铰[J]. 西北工业大学学报 |
|
|
SHI Ruoli, LUO Liang, PAN Zhicheng, ZHANG Jun, SUN Zhiying, GU Shuxian, LI Qilun. Seismic design method and plastic hinge of square steel tube confined reinforced concrete (STRC) columns[J]. Northwestern polytechnical university |
|
|
|
|
|
|
|
| 钢管约束钢筋混凝土柱抗震设计方法及塑性铰 |
|
| 石若利1, 罗靓2, 潘志成3, 张军1, 孙志颖1, 顾淑娴1, 李其伦1 |
|
1. 云南大学 建筑与规划学院, 云南 昆明 650504;
2. 南昌航空大学 土木建筑学院, 江西 南昌 330063;
3. 中国水利水电第八工程局有限公司, 湖南 长沙 410000 |
| 摘要: |
| 钢管约束钢筋混凝土柱具有承载力高、延性好和施工便利等优点，满足"建筑工业化"的要求，因而被广泛应用在高层建筑中。基于混凝土的塑性-损伤模型与钢材的弹塑性混合强化模型，采用ABAQUS软件建立方钢管约束钢筋混凝土（STRC）柱的三维实体精细有限元模型进行拟静力分析。模型考虑了钢管对核心混凝土的约束作用以及合理的边界条件、加载模式，分析所得柱的破坏形态、荷载-位移滞回曲线和荷载-位移骨架曲线等有限元结果与已有拟静力试验结果吻合较好。进一步建立了136个足尺模型并进行参数分析，研究结果表明：钢管的套箍约束作用可减小混凝土压应变峰值并提高压应力峰值，延缓柱的破坏，有效提高其承载力和延性；破坏位移角和极限承载力随钢管厚度增大而增大。提出了不同轴压比时5种材料强度匹配的钢管合理厚度和套箍系数等抗震设计方法，以混凝土应变、钢管应变为依据的塑性铰判定方法以及塑性铰长度实用计算公式，可为框架柱的抗震设计提供依据和支持。 |
| 关键词:
钢管约束钢筋混凝土柱
拟静力
有限元
抗震设计方法
塑性铰
|
|
| Seismic design method and plastic hinge of square steel tube confined reinforced concrete (STRC) columns |
|
| SHI Ruoli1, LUO Liang2, PAN Zhicheng3, ZHANG Jun1, SUN Zhiying1, GU Shuxian1, LI Qilun1 |
|
1. School of Architecture and Planning, Yunnan University, Kunming 650504, China;
2. School of Civil Engineering and Architecture, Nanchang Hangkong University, Nanchang 330063, China;
3. Sinohydro Bureau 8 Co., Ltd, Changsha 410000, China |
| Abstract: |
| Steel tube confined reinforced concrete columns have the advantages of high bearing capacity, good ductility and convenient construction, which meet the requirements of "building industrialization", so they are widely used in high-rise buildings. Based on the plastic-damage constitutive model of concrete and elastic-plastic mixed strengthen constitutive model of steel, finite element software ABAQUS was used to build an elaborate 3D finite element solid model and perform pseudo-static analysis of square steel tube confined RC(STRC) columns. The model considered the confinement effect of the steel tube exerting on the core concrete, as well as reasonable boundary conditions and loading modes. Good agreement was achieved between the finite element analysis results and the existing quasi static experimental results regarding to the failure modes, load-displacement hysteretic curves and load-displacement skeleton curves. Based on the validated model, 136 full scale model examples were established and extensive parametric analysis was conducted. The results show that the confinement of external steel tube can reduce the peak compressive strain and increase the peak compressive stress of concrete, thus delaying the failure of RC column and improving its bearing capacity and ductility effectively. Besides, the failure displacement angle and ultimate bearing capacity increase when the thickness of steel tube increases. Finally, the seismic design method including reasonable thickness and hoop index of the steel tube were proposed for 5 material strength matching and different axial compression ratios. A method to judge the plastic hinge based on concrete strain and steel tube strain was proposed, as well as a practical calculation formula of plastic hinge length. This study can provide basis and support for the seismic design of frame columns. |
| Key words:
steel tube confined RC columns
pseudo static
finite element
seismic design method
plastic hinge
|
|
| 收稿日期: 2021-04-01
修回日期:
|
| DOI: 10.1051/jnwpu/20213961320 |
| 基金项目: 国家自然科学基金（11862024，51264037）与云南大学科研创新基金（2020226）资助 |
| 通讯作者: 张军(1966-),云南大学教授,主要从事建筑设计研究。e-mail:structurdli@gmail.com
Email：structurdli@gmail.com |
| 作者简介: 石若利(1997-),云南大学硕士研究生,主要从事建筑结构抗震减震研究。
|
|
| 相关功能 |
|
|
|
|
| 作者相关文章 |
|
| 石若利 在本刊中的所有文章 |
| 罗靓 在本刊中的所有文章 |
| 潘志成 在本刊中的所有文章 |
| 张军 在本刊中的所有文章 |
| 孙志颖 在本刊中的所有文章 |
| 顾淑娴 在本刊中的所有文章 |
| 李其伦 在本刊中的所有文章 |
|
|
|
|
|
|
|
|
参考文献: |
|
|
[1] 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(in Chinese)
[2] 邵长江, 孙南昌, 佐雪, 等. 矩形截面混凝土空心墩塑性铰长度分析[J]. 土木工程学报, 2018, 51(11):120-128 SHAO Changjiang, SUN Nanchang, ZUO Xue, et al. Study on plastic hinge length of rectangular hollow-section concrete pier[J]. China Civil Engineering Journal, 2018, 51(11):120-128(in Chinese)
[3] 王斌, 孙勇峰, 霍光, 等. 型钢混凝土框架柱等效塑性铰长度研究[J]. 工程力学, 2020, 37(5):112-119 WANG Bin, SUN Yongfeng, Huo Guang, et al. Study on equivalent plastic hinge length of SRC frame columns[J]. Engineering Mechanics, 2020, 37(5):112-119(in Chinese)
[4] 周建, 李建中. 铁路圆端形空心墩位移能力与等效塑性铰长度分析[J]. 铁道科学与工程学报, 2019, 16(11):2748-2758 ZHOU Jian, LI Jianzhong. Analysis of displacement capacity and equivalent plastic hinge length of hollow piers with rounded rectangular cross section in railways[J]. Journal of Railway Science and Engineering, 2019, 16(11):2748-2758(in Chinese)
[5] 孙治国, 王东升, 郭迅, 等. 钢筋混凝土墩柱等效塑性铰长度研究[J]. 中国公路学报, 2011, 24(5):56-64 SUN Zhiguo, WANG Dongsheng, GUO Xun, et al. Research on equivalent plastic hinge length of reinforced concrete bridge column[J]. China Journal of Highway and Transport, 2011, 24(5):56-64(in Chinese)
[6] 王震, 王景全, 修洪亮, 等. 矩形空心墩等效塑性铰模型[J]. 中国公路学报, 2019, 32(1):76-86 WANG Zhen, WANG Jingquan, Xiu Hongliang, et al. Equivalent plastic hinge model of rectangular hollow piers[J]. China Journal of Highway and Transport, 2019, 32(1):76-86(in Chinese)
[7] SHEIKH S A, KHOURY S S. Confined concrete columns with stubs[J]. ACI Structural Journal, 1993, 90:414-431
[8] 仇建磊, 张艳青, 贡金鑫. 钢筋混凝土柱等效塑性铰长度计算研究[J]. 大连理工大学学报, 2017, 57(6):585-592 QIU Jianlei, ZHANG Yanqing, GONG Jinxin. Study of evaluation of equivalent plastic hinge length of reinforced concrete columns[J]. Journal of Dalian University of Technology, 2017, 57(6):585-592(in Chinese)
[9] YUAN Fang, WU Yufei, LI Chunqing. Modelling plastic hinge of FRP-confined RC columns[J]. Engineering Structures, 2017, 131(1):651-168
[10] YUAN Fang, WU Yufei. Effect of load cycling on plastic hinge length in RC columns[J]. Engineering Structures, 2017, 147(9):90-102
[11] DING Faxing, YING Xiaoyong, ZHOU Linchao, et al. Unified calculation method and its application in determining the uniaxial mechanical properties of concrete[J]. Frontier of Architecture and Civil Engineering in China, 2011, 5(3):381-393
[12] DING Faxing, YIN Guoan, WANG Liping, et al. Seismic performance of a non-through-core concrete between concrete-filled steel tubular columns and reinforced concrete beams[J]. Thin-Walled Struct, 2011, 110(1):14-26
[13] 韩林海. 现代钢管混凝土结构技术[M]. 2版. 北京:中国建筑工业出版社, 2007 HAN Linhai. Modern technique of concrete-filled steel tubular structures[M]. 2nd ed. Beijing:China Architecture & Building Press, 2007(in Chinese)
[14] 中华人民共和国住房和城乡建设部. 建筑抗震试验规程[S]. JGJ/T 101-2015, 2015 JGJ/T 101-2015. Specification for seismic test of buildings[S]. Beijing:China Architecture & Building Press, 2015(in Chinese)
[15] 中华人民共和国住房和城乡建设部. 建筑抗震设计规范[S]. GB50011-2010, 2010 GB50011-2010. Code for seismic design of buildings[S]. Beijing:China Architecture & Building Press, 2010(in Chinese) |
|
|
|
|
|
|
|
