[1]胡克旭,赵志鹏,尹帅锋.新型自密实混凝土加固震损RC框架节点低周反复试验数值模拟[J].西安建筑科技大学学报：自然版,2015,47(06):808-813.[doi:10.15986/j.1006-7930.2015.06.008]
　ZHAO Zhipeng,HU Kexu,YIN Shuaifeng.Numerical simulation for pseudo-static test of earthquake-damaged RC frame joints strengthened by self compacting concrete[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2015,47(06):808-813.[doi:10.15986/j.1006-7930.2015.06.008]
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新型自密实混凝土加固震损RC框架节点低周反复试验数值模拟()
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西安建筑科技大学学报：自然版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年06期
页码:
808-813
栏目:
出版日期:
2016-01-15

文章信息/Info

Title:
Numerical simulation for pseudo-static test of earthquake-damaged RC frame joints strengthened by self compacting concrete
文章编号:
1006-7930(2015)06-0808-06
作者:
胡克旭1; 赵志鹏1; 尹帅锋2
(1. 同济大学结构工程与防灾研究所,上海 200092 ;2. 上海市隧道工程轨道交通设计研究院,上海 200235 )
Author(s):
ZHAO Zhipeng1;  HU Kexu1;  YIN Shuaifeng2
(1. Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China 2. Shanghai Tunnel Engineering and Rail Transit Design and Research Institute, Shanghai 200235, China)
关键词:
自密实混凝土; RC 框架节点; 节点损伤分区; 震损加固; 数值分析
Keywords:
self compacting concrete;  RC frame joints;  joint damage partition;  seismic damage reinforcement;  Numerical simulation
分类号:
TU375
DOI:
10.15986/j.1006-7930.2015.06.008
文献标志码:
A
摘要:
在前期节点加固试验研究基础上，运用有限元Opensees程序软件对试验进行仿真模拟．提出了节点损伤分区的概念，将节点的震损分为梁柱端部损伤区和节点核心损伤区两部分并差别处理；结合梁柱节点单元的特点，提出使用面积加权平均的方法计算加固后震损RC 框架节点核心区平均受剪应力-应变关系；同时提出将柱子损伤模型推广应用到节点时对损伤D 值折减的方法．结果表明模拟滞回曲线与试验曲线符合较好，建立的加固震损RC 框架节点有限元模型可以较准确地模拟试验试件在低周反复荷载下的受力变形性能，为进一步理论分析奠定基础．
Abstract:
In this paper, the previous experimental study is simulated using the finite element software Opensees. The conception of joint damage partition is presented, which divides the seismic damage into beam column end damage zone and joint core damage zone being treated differently. According to the characteristics of Beam Column Joint Element, the Area Weighted Average method is proposed to get the average shear stress-strain relationship in the core area of the damaged RC frame joints. At the same time, it is concluded that the damage D value should be reduced when applying the Column-Damage-Model to the joints. The results show that the simulation results stay in good agreement with the experimental results, and the finite element model of the strengthened RC frame joints with seismic damage in this paper can be used to simulate the deformation behavior of the specimen under low cyclic loading, and it lays the foundation for the further theoretical analysis

参考文献/References:

References

[1] 程莉. 玄武岩纤维加固震损混凝土框架节点抗震性能试验研究[D]. 上海: 同济大学, 2008.

CHENG Li. Investigation of BFRP-reinforced pre-damaged concrete beam-column joints under reversed cyclic loading [D]. Shanghai: Tongji University, 2008.

[2] 曹忠民, 李爱群, 王亚勇, 等. 高强钢绞线网-聚合物砂浆复合面层加固震损梁柱节点的试验研究[J].工程抗震与加固改造, 2005, 27(6): 45-50.

CAO Zhongmin, LI Aiqun, WANG Yayong, et al. Experimental study on damaged RC beam-column joints strengthened by composite cover of high strength wire mesh and polymer mortar[J]. Earthquake Resistant Engineering Retrofitting, 2005, 27(6): 45-50

[3] 陆洲导, 洪涛, 谢莉萍. 碳纤维加固震损混凝土框架节点抗震性能的初步研究[J]. 工业建筑, 2003,33(2): 9-12.

LU Zhoudao, HONG Tao, XIE Liping. An initial study on performance of damaged interior column-beam-slab subassemblies strengthened by carbon fiber reinforced plastics [J]. Industrial Construction, 2003, 33(2): 9-12.

[4] 余琼, 陆洲导. 受损对碳纤维加固框架节点的影响[J]. 同济大学学报, 2004, 32(2): 177-181.

YU Qong, LU Zhoudao. Comparison and analysis of injured frame joint and uninjured frame joint strengthened by carbon fiber reinforced plastics[J]. Journal of Tongji University, 2004, 32(2): 177-181.

[5] 胡克旭, 张鹏, 刘春浩. 新型材料加固钢筋混凝土框架节点的抗震试验研究[J]. 土木工程学报, 2010,43: 447-451.

HU Kexu, ZHANG Peng, LIU Chunhao. Seismic testing study on RC joints strengthened by new concrete material[J]. China Civil Engineering Journal. 2010, 43: 447-451.

[6] MAZZONI S, MCKENNA F, SCOTT M H, et al. OpenSees users manual[R].Berkeley: PEER University, 2007.

[7] 吴元, 王凯, 杨晓婧等. 水泥基灌浆料基本力学性能试验研究[J]. 建筑结构. 2014(19): 95-98.

WU Yuan, WANG Kai, YANG Xiaoqian, et al. Experimental study on basic mechanical properties of cementitious grout[J]. Building Structure. 2014(19): 95-98.

[8] LOWES L N, MITRA N, ALTOONTASH A. A beam-column joint model for simulating the earthquake response of reinforced concrete frames[M]. Pacific Earthquake Engineering Research Center, College of Engineering, University of California, 2003.

[9] MITRA N, LOWES L N. Evaluation and advancement of a reinforced concrete beam-column joint model[C]// Canada: Vancouver, B.C., 13th World Conference on Earthquake Engineering, 2004.

[10] MITRA N, LOWES L N. Evaluation, calibration and verification of a reinforced concrete beam-column joint model[J]. Journal of Structural Engineering. 2007, 133(1): 105-120.

[11] 韩风霞, 王志军, 宋孟超, 等. 钢筋混凝土梁柱节点核心区拉-压杆模型化方法研究[J]. 土木建筑与环境工程. 2010(1): 61-65.

HAN Fengxia, WANG Zhijun, SONG Mengchao, et al. Strut-and-tie model method of reinforced concrete beam-column joint core[J]. Journal of Civil, Architectural & Environmental Engineering. 2010(1): 61-65.

[12] 李维涛, 鞠杨, 应惠清. RC 框架结构损伤指标研究[J]. 哈尔滨工业大学学报, 2009 (4): 204-207.

LI Weitao, JU Yang, YING Huiqing. Damage index of RC frame structure[J]. Journal of Harbin Institute of Technology, 2009 (4): 204-207.

[13] 牛荻涛, 任利杰. 改进的钢筋混凝土结构双参数地震破坏模型[J].地震工程与工程振动,1996(04):44-54.

NIU Ditao, REN Lijie, Improved double parameter seismic damage model for reinforced concrete structures[ J]. Earthquake Engineering and Engineering Vibration. 1996(04): 44-54.

备注/Memo

备注/Memo:
收稿日期：2015-08-03 修改稿日期：2015-12-14
基金项目：国家科技支撑计划课题项目(2009BAJ28B02）
作者简介：胡克旭（1964-），男，教授，主要从事工程结构抗火性能、工程结构检测鉴定与加固改造技术研究. E-mail: kexuhu@163.com
更新日期/Last Update: 2016-01-29