[1]薛建阳,李海博,翟 磊,等.反复荷载下内配PVC管约束高强混凝土柱受力性能及其影响因素分析[J].西安建筑科技大学学报：自然版,2016,48(01):24-28,35.[doi:10.15986/j.1006-7930.2016.01.004]
　XUE Jianyang,LI Haibo,ZHAI Lei,et al.Analysis on influence parameters and mechanical behaviors of embedded PVC pipe confined with reinforced high-strength concrete columns under cyclic reversed loading[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2016,48(01):24-28,35.[doi:10.15986/j.1006-7930.2016.01.004]
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反复荷载下内配PVC管约束高强混凝土柱受力性能及其影响因素分析()
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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:
48
期数:
2016年01期
页码:
24-28,35
栏目:
出版日期:
2016-02-28

文章信息/Info

Title:
Analysis on influence parameters and mechanical behaviors of embedded PVC pipe confined with reinforced high-strength concrete columns under cyclic reversed loading
文章编号:
1006-7930(2016)01-0024-05
作者:
 薛建阳; 李海博; 翟 磊; 柯晓军; 郑文豪; 门博宇
西安建筑科技大学土木工程学院, 陕西 西安 710055
Author(s):
XUE Jianyang;  LI Haibo;  ZHAI Lei;  KE Xiaojun;  ZHENG Wenhao;  MEN Boyu
School of Civil Engineering, Xi′an Univ. of Arch. & Tech., Xi′an 710055, China
关键词:
PVC; 高强混凝土; 柱; 抗震性能; ABAQUS; 有限元分析
Keywords:
PVC;  high-strength concrete;  column;  seismic performance;  ABAQUS;  finite element analysis
分类号:
TU398
DOI:
10.15986/j.1006-7930.2016.01.004
文献标志码:
A
摘要:
以5根内配PVC管约束高强混凝土柱(PVC-RHC)和1根钢筋高强混凝土短柱(RHC)水平拟静力试验为基础，分析了PVC管径、轴压比和剪跨比对内配PVC管约束高强混凝土柱受力性能的影响．利用有限元软件ABAQUS对试验柱构件进行非线性有限元模拟，除剪跨比λ=2.5柱构件外，模拟结果与试验结果吻合较好，验证了有限元模型建立的有效性．在此基础上，以PVC管径高比、PVC管径壁厚和混凝土强度参数为目标参数，对内配PVC管约束高强混凝土短柱进行有限元模拟．结果表明：随着PVC管径高比的增加，构件初始刚度变化幅度较小，而峰值荷载和延性呈增加的趋势，当控制在0.5左右时，构件综合受力性能相对较好；增加PVC管径壁厚，构件的初始刚度和峰值荷载变化不明显，后期强度衰减减慢，延性略有改善；随着混凝土强度的提高，构件的初始刚度和峰值荷载提高显著，但延性变差．
Abstract:
Based on the test results of five embedded PVC pipe confined reinforced high-strength concrete (PVC-RHC) columns and one reinforced high-strength concrete (RHC) short column under quasi-static loading, design parameters such as PVC pipe diameter, axial compression ratio and shear span ratio which influence the mechanical behavior of PVC-RHC columns were discussed. Nonlinear finite element models with analytical software ABAQUS was analyzed for PVC-RHC columns, and after comparison of test result, the feasibility of nonlinear finite element models of short columns were validated. On the basis of this model, the parameters of the diameter-height ratio and thickness of PVC pipe, concrete strength influencing on the behavior of PVC-RHC short columns were simulated. Results show that with the increasing of the diameter-height ratio of PVC pipe, the initial stiffness is not obvious, but ultimate capacity and ductility both have the increased trend. When the diameter-height ratio of PVC pipe is about 0.5, the comprehensive mechanical behaviors are relatively good. As the thickness of PVC pipe increases, the initial stiffness and ultimate capacity have small changes, and the ductility improves. With the increasing of concrete strength, the initial stiffness and ultimate capacity improve significantly, but the ductility decreases.

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备注/Memo

备注/Memo:
收稿日期：2014-07-21 修改稿日期：2016-01-28
基金项目：国家自然科学基金资助项目(51508112)
作者简介：薛建阳(1970－)，男，博士，教授，主要从事型钢-混凝土组合结构及其抗震性能等方面研究．E-mail: jianyang_xue@163.com
更新日期/Last Update: 2016-04-01