三向受压下卵石混凝土的变形性能及损伤分析

陈宇良; 吉云鹏; 陈宗平; 刘杰; 晏方; 覃贝录

doi:10.13204/j.gyjzG21030802

三向受压下卵石混凝土的变形性能及损伤分析

doi: 10.13204/j.gyjzG21030802

陈宇良^1,2,
吉云鹏¹,
陈宗平^1,2, ,,
刘杰¹,
晏方¹,
覃贝录¹

1. 广西科技大学土木建筑工程学院, 广西柳州 545006;
2. 广西大学工程防灾与结构安全教育部重点实验室, 南宁 530004

基金项目:

广西科技基地和人才专项(AD19110068)

广西重点实验室开放课题项目资助(2019ZDK038)

国家级(广西)。大学生创新创业训练计划资助项目(202010594033)。

广西自然科学基金项目(2019GXNSFBA245030)

国家自然科学基金项目(51908141)

详细信息

作者简介:
陈宇良,男,1987年出生,博士,副教授。

通讯作者:
陈宗平,男,1975年出生,博士,教授,博士研究生导师,zpchen@gxu.edu.cn。

计量
- 文章访问数: 103
- HTML全文浏览量: 23
- PDF下载量: 2
- 被引次数: 0
出版历程
- 收稿日期: 2021-03-08
- 网络出版日期: 2022-03-29

DEFORMATION AND DAMAGE ANALYSIS OF PEBBLE CONCRETE UNDER TRIAXIAL COMPRESSION

1. College of Civil Engineering and Architecture, Guangxi University of Science and Technology, Liuzhou 545006, China;
2. Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Nanning 530004, China

摘要

摘要: 为研究卵石混凝土三向受压时的变形性能及损伤发展过程,以围压值为参数,设计了27个Φ100×200圆柱体卵石混凝土试件进行常规三轴加载试验。结果表明:在三向受压情况下,根据围压值的不同,试件的破坏形态主要分为竖向劈裂破坏、斜向剪切破坏及横向断裂破坏;围压值增大,试件应力-应变曲线的峰部抬高,下降段逐渐平缓,试件破坏时的耗能逐渐增大;围压可以显著改善卵石混凝土的延性,抑制卵石混凝土的损伤发展。此外,通过拟合试验数据提出了围压值与实际耗能之间的函数关系式。
- 卵石混凝土 /
- 三向受压 /
- 耗能 /
- 变形性能 /
- 损伤变量
Abstract: In order to study the deformation performance and damage development of pebble concrete under triaxial compression, based on the parameters of confining pressure, 27 Φ100×200 cylinder specimens were designed and tested under triaxial compression.The results showed that the failure patterns of the specimens under triaxial compression were divided into vertical splitting failure, oblique shear failure and transverse rupture failure according to different confined pressures. As the confining pressure increased, the peak of the stress-strain curve of specimens increased, the descending section of the stress-strain curve gradually flattened, and the energy dissipation increased. The confining pressure could significantly improve the ductility of pebble concrete and restrain the damage development of pebble concrete. Finally, the functional relations between the lateral confining pressure and the actual energy dissipation was presented by fitting the experimental data.
- pebble concrete /
- triaxial compression /
- energy dissipation /
- deformation performance /
- damage variable

HTML全文

参考文献(14)

[1]	李亚南.利用碎卵石配制混凝土的试验研究[J].新型建筑材料,2019,46(5):76-79.
[2]	李红梅,李树山,贾明晓,等.粉煤灰掺量对卵石混凝土性能影响的试验研究[J].混凝土,2016(7):114-116.
[3]	WANG L,SONG S M,BAO W Z,et al.Effects of Pebble Aggregate in Xinjiang Area on Concrete Performance[J].Advanced Materials Research,2011:1525-1530.
[4]	李树山,高丹盈.粗骨料粒径对卵石混凝土抗压强度影响的试验研究[J].混凝土,2013(2):59-61,64.
[5]	XIE W,JIN Y N,LI S S.Experimental Research on the Influence of Grain Size of Coarse Aggregate on Pebble Concrete Compressive Strength[J].Applied Mechanics and Materials,2012,238:133-137.
[6]	杜晓奇,司政,黄灵芝,等.粗骨料颗粒形态和体积分数对混凝土单轴压缩性能的影响研究[J].应用力学学报,2020,37(4):1828-1834 ,1879.
[7]	陈旭涛,赵鹏,曹忠露,等.卵石混凝土的强度和干缩特性[J].中国港湾建设,2020,40(1):32-37.
[8]	汪继平,叶志坤,秦明强.天然卵石与碎石集料混凝土耐久性对比研究[J].公路交通科技(应用技术版),2019,15(10):68-71.
[9]	CHEN Z P,ZHOU C H,YE P H.The Compressive Strength and Flexural Strength Test of Recycled Pebble Aggregate Concrete[J].Applied Mechanics and Materials,2013,357-360:1433-1436.
[10]	陈宗平,周春恒,陈宇良,等.再生卵石骨料混凝土力学性能试验研究[J].建筑材料学报,2014,17(3):465-469 ,506.
[11]	陈宗平,周春恒,陈宇良,等.再生卵石骨料混凝土力学性能及其应力-应变本构关系[J].应用基础与工程科学学报,2014,22(4):763-774.
[12]	苏益声,孟二从,陈宗平,等.高温后再生卵石混凝土抗压性能试验研究[J].混凝土,2014(8):78-81,87.
[13]	陈宇良,吉云鹏,陈宗平,等.三轴应力下卵石混凝土力学性能试验研究[J/OL].建筑材料学报:1-11[2021-04-28 ].http://kns.cnki.net/kcms/detail/31.1764.TU.20201130.1034.008.html.
[14]	陈宗平,李玲,陈宇良,等.再生混凝土三轴受压力学性能试验研究[J].工程力学,2015,32(7):56-63.