|Table of Contents|

Experiment Analysis and Calculation on Ductility Behaviors of High-strength RC Square Columns Strengthened with CFRP(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2012年02期
Page:
21-29
Research Field:
Publishing date:

Info

Title:
Experiment Analysis and Calculation on Ductility Behaviors of High-strength RC Square Columns Strengthened with CFRP
Author(s):
WANG Su-yan1;  YU Wen-hua2;  CAO Huai-chao1;  LIU Yi1
1. Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. CERI Engineering Technology Co., Ltd, Beijing 100053, China
Keywords:
CFRP;  high-strength reinforced concrete square column;  strengthening;  ductility;  low cyclic loading;  seismic behavior
PACS:
TU375.3
DOI:
-
Abstract:
To investigate the seismic behaviors of high-strength reinforced concrete(RC)square columns strengthened with carbon fiber reinforced polymer(CFRP), the low cyclic loading test of thirteen high-strength RC square columns was conducted. The seismic behaviors of columns, such as failure patterns, hysteresis behaviors, skeleton curves, energy dissipation capacity and ductility were studied, and the influences of axial load ratio, shear span ratio and CFRP strengthening volume on the ductility of high-strength RC square columns were discussed. The calculation formulae of CFRP effective constraint coefficient and displacement ductility coefficient were proposed. Results show that the ductility and energy dissipation capacity can be significantly reduced as the increase of axial load ratios or the decrease of shear span ratios; CFRP can observably improve the ductility and energy dissipation capacity of high-strength RC square columns; compared with the columns without CFRP, the seismic behaviors of columns with high axial load ratio or low shear span ratio are improved more obviously after being strengthened with CFRP in transverse; and the ductility, energy dissipation capacity increase with the increases of strengthening volume, but the improvement extent reduces gradually.

References:

[1] BINICI B,MOSALAM K M.Analysis of Reinforced Concrete Columns Retrofitted with Fiber Reinforced Polymer Lamina[J].Composites Part B:Engineering,2007,38(2):265-276.
[2]ANGGAWIDJAJA D,UEDA T,DAI J,et al.Deformation Capacity of RC Piers Wrapped by New Fiber-reinforced Polymer with Large Fracture Strain[J].Cement and Concrete Composites,2006,28(10):914-927.
[3]WU G,LU Z T,WU Z S.Strength and Ductility of Concrete Cylinders Confined with FRP Composites[J].Construction and Building Materials,2006,20(3):134-148.
[4]王吉忠,王苏岩,黄承逵.CFRP加固高强混凝土柱抗震性能和延性研究[J].大连理工大学学报,2008,48(5):708-714. WANG Ji-zhong,WANG Su-yan,HUANG Cheng-kui.Research on Ductility and Earthquake-resistance of High Strength Concrete Column Confined by CFRP[J].Journal of Dalian University of Technology,2008,48(5):708-714.
[5]王苏岩,韩克双,曲秀华.CFRP加固高强混凝土柱改善延性的试验研究[J].世界地震工程,2005,21(3):7-10. WANG Su-yan,HAN Ke-shuang,QU Xiu-hua.Experimental Research on Ductility Behavior of High-strength Reinforced Concrete Columns Strengthened with Carbon Fiber Sheets[J].World Earthquake Engineering,2005,21(3):7-10.
[6]SEIBLE F,PRIESTLEY M J N,HEGEMIER G A,et al.Seismic Retrofit of RC Columns with Continuous Carbon Fiber Jackets[J].Journal of Composite for Construction,1997,1(2):52-62.
[7]XIAO Y,MA R.Seismic Retrofit of RC Circular Columns Using Prefabricated Composite Jacketing[J].Journal of Structure Engineering,1997,123(10):1357-1364.
[8]闫长旺.钢骨超高强混凝土框架节点抗震性能研究[D].大连:大连理工大学,2009. YAN Chang-wang.Study on Seismic Performance of Steel Reinforced Ultra High Strength Concrete Frame Connection [D].Dalian:Dalian University of Technology,2009.
[9]刘伯权,白国良,张国军.高轴压比高强混凝土框架柱抗震性能试验研究[J].土木工程学报,2005,38(1):45-50. LIU Bo-quan,BAI Guo-liang,ZHANG Guo-jun.An Experimental Study on the Seismic Behavior of High Strength Reinforced Concrete Frame Columns with High Axial Compression Ratio[J].China Civil Engin-eering Journal,2005,38(1):45-50.
[10]赵鹏展.GFRP管混凝土柱-钢筋混凝土梁节点抗震性能研究[D].大连:大连理工大学,2010. ZHAO Peng-zhan.Study on Seismic Performance of Concrete-filled GFRP Tubes Column-reinforced Concrete Beam Joint[D].Dalian:Dalian University of Technology,2010.
[11]李凤兰,黄承逵,温世臣,等.低周反复荷载下钢纤维高强混凝土柱延性试验研究[J].工程力学,2005,22(6):159-164. LI Feng-lan,HUANG Cheng-kui,WEN Shi-chen,et al.Ductility of Steel Fiber Reinforced High-strength Concrete Columns Under Cycle Loading[J].Engineering Mechanics,2005,22(6):159-164.
[12]张 轲,岳清瑞,叶列平.碳纤维布加固钢筋混凝土柱滞回耗能分析及目标延性系数确定[J].工业建筑,2001,31(6):5-8. ZHANG Ke,YUE Qing-rui,YE Lie-ping.Analysis of Hystersis Energy Disspation and Acceptable Ductility Factor for Concrete Column Strengthened with CFS[J].Industrial Construction,2001,31(6):5-8.
[13]叶列平,赵树红,李全旺,等.碳纤维布加固混凝土柱受剪承载力计算[J].建筑结构学报,2000,21(2):59-67. YE Lie-ping,ZHAO Shu-hong,LI Quan-wang,et al.Calculation of Shear Strength of Concrete Column Strengthened with Carbon Fiber Reinforced Plastic Sheet[J].Journal of Building Structures,2000,21(2):59-67.
[14]李春良,程永春,何 峰.预应力碳纤维布加固钢筋混凝土梁的经典层合理论力学解析[J].中国公路学报,2009,22(1):60-65. LI Chun-liang,CHENG Yong-chun,HE Feng.Theoretical Study of RC Beam Strengthened with Prestressed CFRP Sheet Based on Classical Laminate Theory[J].China Journal of Highway and Transport,2009,22(1):60-65.
[15]薛伟辰,钱 卫.部分预应力CFRP筋混凝土梁疲劳性能研究[J].中国公路学报,2008,21(2):43-48. XUE Wei-chen,QIAN Wei.Study of Fatigue Behaviors of Partially Prestressed Concrete Beams with CFRP Tendons[J].China Journal of Highway and Transport,2008,21(2):43-48.
[16]方 志,李红芳,彭 波.体外CFRP预应力筋混凝土梁的受力性能[J].中国公路学报,2008,21(3):40-47. FANG Zhi,LI Hong-fang,PENG Bo.Mechanical Behaviors of Concrete Beam of External Prestressed CFRP Tendons[J].China Journal of Highway and Transport,2008,21(3):40-47.
[17]邬晓光,张柳煜,郝 毅,等.碳纤维加固钢筋混凝土梁的受弯全过程分析[J].长安大学学报:自然科学版,2008,28(2):53-57. WU Xiao-guang, ZHANG Liu-yu, HAO Yi,et al.Flexural-tensile Strength of Concrete Beams in Complete Course of Reinforcement with Carbon-fiber-reinforced-polymer(CFRP)[J].Journal of Chang'an University:Natural Science Edition,2008,28(2):53-57.
[18]张柳煜,邬晓光,李启乾.粘贴加固材料厚度与钢筋混凝土T梁极限承载力分析[J].筑路机械与施工机械化,2010,27(7):67-69. ZHANG Liu-yu,WU Xiao-guang,LI Qi-qian.Analysis on Thickness of Reinforcement Material and Ultimate Bearing Capacity of RC T-section Beams Strengthened with Steel Plate and CFRP[J].Road Machinery & Construction Mechanization,2010,27(7):67-69.
[19]陈小英,李唐宁,黄 音,等.CFRP体外预应力加固钢筋混凝土T型梁试验[J].中国公路学报,2010,23(2):56-63. CHEN Xiao-ying,LI Tang-ning,HUANG Yin,et al.Experiment on Reinforced Concrete T-beams Strengthened with External Prestressed CFRP Sheets[J].China Journal of Highway and Transport,2010,23(2):56-63.

Memo

Memo:
-
Last Update: 2012-06-20