预应力钢带加固钢筋混凝土柱轴压尺寸效应研究

叶超; 李俊华; 顾炬锋; 李权平

doi:10.13204/j.gyjz202002027

预应力钢带加固钢筋混凝土柱轴压尺寸效应研究

doi: 10.13204/j.gyjz202002027

宁波大学建筑工程与环境学院, 浙江宁波 315211

基金项目:

国家自然科学基金项目（51178226）；浙江省公益技术研究计划项目（LGF18E080008）。

详细信息

作者简介:
叶超,男,1994年出生,硕士研究生。

计量
- 文章访问数: 57
- HTML全文浏览量: 10
- PDF下载量: 3
- 被引次数: 0
出版历程
- 收稿日期: 2019-11-12

RESEARCH ON SIZE EFFECT OF REINFORCED CONCRETE COLUMNS STRENGTHENED WITH PRESTRESSED STEEL STRIP UNDER AXIAL COMPRESSION

College of Civil Engineering and Environment, Ningbo University, Ningbo 315211, China

摘要

摘要: 为研究尺寸效应对预应力钢带加固钢筋混凝土柱轴压性能的影响，基于已有钢带加固柱轴压试验，建立有限元分析模型，有限元分析结果与试验结果的验证表明两者较为吻合。在此基础上，研究构件相似时，不同截面尺寸对钢带加固构件轴压性能的影响，结果表明：相似构件抗压强度提升幅度和轴向刚度提升幅度随构件截面尺寸上升而下降，通过引入尺寸效应系数，建立考虑尺寸效应的钢带加固柱轴压承载力计算式，计算值与模拟值吻合程度较好。
- 预应力钢带 /
- 有限元 /
- 尺寸效应 /
- 轴压承载力
Abstract: In order to study the effects of size effect on the existing axial compressive performance of reinforced concrete columns strengthened with prestressed steel strips, a finite element analysis model was established based on the axial compressive test of steel strip reinforcement columns. The finite element analysis results were verified by experimental results. On this basis, the effects of different cross-section dimensions on the axial compression perfomance of steel strip reinforcement members were studied when the components were similar. The results showed that the increase in compressive strength and the increase in axial stiffness of similar members decreased with the increase of the cross-sectional dimensions of the members. The size effect coefficient was used to establish the calculation formula of the axial bearing capacity of the steel strip reinforcement column considering the size effect. The calculated values agreed well with the simulated values.
- prestressed steel strip /
- finite element /
- size effect /
- axial compressive bearing capacity

HTML全文

参考文献(14)

刘义,高宗棋,杨勇,等.预应力钢带加固钢筋混凝土梁柱受力性能试验研究[J].建筑结构学报,2013,34(10):120-127.

杨勇,田静,刘如月.预应力钢带加固混凝土梁斜截面开裂荷载及抗剪承载能力分析[J].工业建筑,2015,45(3):19-21.

杨勇,王欣林,刘义.预应力钢带加固钢筋混凝土柱轴压承载力试验研究[J].工业建筑,2012,42(增刊1):183-187.

杨勇,李少语,刘义,等.预应力钢带约束混凝土轴心抗压强度试验研究[J].工业建筑,2015,45(3):1-5

张磊,宁国荣,李俊华,等.预应力钢带加固钢筋混凝土柱试验研究[J].工业建筑,2016,46(3):155-159

陈建华.火灾后型钢混凝士柱抗震性能及加崮修复研究[D].宁波:宁波大学,2014.

BAZANT Z P, YU Q. Designing Against Size Effect on Shear Strength of Reinforced Concrete Beams Without Stirrups[J]. Journal of Structural Engineering, 2005, 131(12):1877-1897.

BASE Y H, LEE J H, YOON Y S. Prediction of Shear Strength in High-Strength Concrete Beams Consideration Size Effect[J]. Magazine of Concrete Research, 2006, 58(4):193-200.

SENE S, BARRB I G, ABUSIAF H F. Size Effect in Axially Loaded Reinforced Concrete Columns[J]. Journal of Structural Engineering, 2004, 130(4):662-670.

张波,杨勇,刘义,等.预应力钢带加固钢筋混凝土柱轴压性能试验研究[J].工程力学,2016,33(3):107-108.

杜修力,符佳,张建伟.钢筋混凝土柱轴心受压性能尺寸效应的大比尺试验研究[J].土木工程学报,2010,43:2.

MANDER J B, PRIESTLEY M J N, PARK R. Theoretical Stress-strain Model for Confined Concrete[J]. Journal of Structural Engineering, 1998, 114(8):1804-1826.

RICHART F E, BRANDTZAEG A, BROWN R L. A Study of Failure of Concrete Under Combined Compressive Stresses[R]. Engineering Experiment Station, University of Illinoi, Urbana,1928.

LAM L, TENG J G. Ultimate Condition of Fiber Reinforced Polymer-Confined Concrete[J]. Journal of Composites for Construction, 2004, 8(6):539-548.

施引文献

资源附件(0)

访问统计