[1]罗靓,程博汉,吕辉.圆钢管混凝土组合框架拟动力性能有限元分析[J].地震工程与工程振动,2021,41(03):124-135.[doi:10.13197/j.eeev.2021.03.124.luol.013]
 LUO Liang,CHENG Bohan,Lü Hui.Finite element analysis for quasi dynamic behavior of concrete filled circular steel tubular composite space frame[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2021,41(03):124-135.[doi:10.13197/j.eeev.2021.03.124.luol.013]
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圆钢管混凝土组合框架拟动力性能有限元分析
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《地震工程与工程振动》[ISSN:/CN:]

卷:
41
期数:
2021年03
页码:
124-135
栏目:
论文
出版日期:
2021-06-30

文章信息/Info

Title:
Finite element analysis for quasi dynamic behavior of concrete filled circular steel tubular composite space frame
作者:
罗靓12 程博汉2 吕辉12
1. 南昌航空大学 土木建筑学院, 江西 南昌 330036;
2. 江西省智慧建筑工程研究中心, 江西 南昌 330036
Author(s):
LUO Liang12 CHENG Bohan2 Lü Hui12
1. School of Civil Engineering and Architecture, Nanchang Hangkong University, Nanchang 330036, China;
2. Jiangxi Intelligent Building Engineering Research Center, Nanchang 330036, China
关键词:
钢-混凝土组合框架拟动力地震波结构阻尼强柱弱梁ABAQUS有限元软件
Keywords:
steel-concrete composite framequasi dynamicseismic wavestructural dampingstrong column and weak beamABAQUS program
分类号:
TU398
DOI:
10.13197/j.eeev.2021.03.124.luol.013
摘要:
提出了一种精细化有限元建模方法,采用ABAQUS有限元软件建立2层圆钢管混凝土柱-组合梁空间框架的三维实体精细有限元模型进行拟动力分析。模型考虑了混凝土与钢材的合理滞回本构关系、钢管对核心混凝土的套箍约束作用、梁与柱的半刚性连接节点以及结构阻尼。位移、加速度、基底剪力、累积耗能的有限元结果与已有拟动力试验结果吻合良好,证明了模型具有较高的精度。进一步分析了结构损伤、钢管混凝土柱轴压比、钢管横向变形系数以及钢管、核心混凝土、钢梁、楼板和钢筋的应力。结果表明:3种幅值El Centro波作用下,组合框架基本处于弹性阶段,具有良好的抗震性能;柱的轴压比很小,且受压损伤小于楼板,该框架结构为典型的“强柱弱梁”体系;采用的建模方法具有求解效率高、数值稳定性好的特点,能有效反映结构的损伤过程,因此可方便地用于实际工程的抗震性能评估。
Abstract:
An elaborate finite element modeling method is proposed. Finite element software ABAQUS was used to build an elaborate 3D solid finite element model and perform pseudo-dynamic analysis of a two-story circular CFT column-composite beam space frame. The FE model considers the reasonable hysteretic constitutive relation between concrete and steel, the constraint ferrule effect of steel tube exerting on the core concrete, the semi rigid beam-column joint and structural damping. The FE results of displacement, acceleration, base shear, cumulative energy dissipation are in good agreement with the existing quasi dynamic experimental results, which proves that the model has high accuracy. Further analysis was conducted on structural damage, axial compression ratio of CFT column, lateral deformation index of steel tube, stress of steel tube, core concrete, steel beam, floor slab and steel net. The results show that the composite frame is generally in the elastic stage and has good seismic performance under the seismic waves of 3 amplitudes. The axial compression ratio of the CFT column is very small and the compression damage is less than that of the floor slab, reflecting the frame structure is a typical “strong column and weak beam” system. The modeling method used has the advantages of high solution efficiency, good numerical stability and can effectively reflect the damage process of the structure, so it can be conveniently used for seismic behavior evaluation of practical projects.

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相似文献/References:

[1]石文龙,肖勇,李国强,等.梁柱组合节点的拟动力试验研究[J].地震工程与工程振动,2008,28(06):124.
 SHI Wenlong,Robert Y. Xiao,LI Guoqiang,et al.Pseudo-dynamic tests on composite joints with flush end plate connections[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2008,28(03):124.

备注/Memo

备注/Memo:
收稿日期:2020-03-30;改回日期:2020-06-30。
基金项目:国家自然科学基金项目(51969019);南昌航空大学博士启动基金项目(EA201911291)
作者简介:罗靓(1984-),男,讲师,博士,主要从事建筑结构抗震减震研究.E-mail:luoliang@nchu.edu.cn
通讯作者:程博汉(1994-),男,工程师,硕士,主要从事结构抗震加固技术研究.E-mail:chengbohan1994@qq.com
更新日期/Last Update: 1900-01-01