冻融循环后自密实混凝土受压本构关系研究

刘凯华; 严佳川; 胡琼; 邹超英

doi:10.13204/j.gyjz201906040002

冻融循环后自密实混凝土受压本构关系研究

doi: 10.13204/j.gyjz201906040002

刘凯华¹,
严佳川^2,3,
胡琼^2,3,
邹超英^2,3, ,

1. 广东工业大学土木与交通工程学院, 广州 510006;
2. 哈尔滨工业大学结构工程灾变与控制教育部重点实验室, 哈尔滨 150090;
3. 哈尔滨工业大学土木工程智能防灾减灾工业和信息化部重点实验室, 哈尔滨 150090

基金项目:

国家自然科学基金面上项目（50278025）。

详细信息

作者简介:
刘凯华,男,1990年出生,博士,讲师。

通讯作者:
邹超英,男,1958年出生,博士,教授,cyzou@hit.edu.cn。

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- 文章访问数: 72
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出版历程
- 收稿日期: 2020-02-21
- 网络出版日期: 2021-03-31

RESEARCH ON THE COMPRESSIVE CONSTITUTIVE MODEL OF SELF-COMPACTING CONCRETE AFTER FREEZE-THAW CYCLES

LIU Kaihua¹,
YAN Jiachuan^2,3,
HU Qiong^2,3,
ZOU Chaoying^{2,3
, ,}

1. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China;
2. Key Lab of Structures Behavior and Control Ministry of Education, Harbin Institute of Technology, Harbin 150090, China;
3. Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China

摘要

摘要: 寒冷地区服役的混凝土结构不可避免要受到冻融循环作用的影响。针对经历0次、50次、100次、150次、200次、250次和300次冻融循环后的自密实混凝土受压本构关系开展研究。结果表明：随着冻融循环次数的增加，试件的质量损失率增大，相对弹性模量降低，自密实混凝土能够满足F300的要求。试件的弹性模量和峰值应力在冻融前期变化不大，超过150次冻融循环后降幅明显；随着冻融循环次数的增加，峰值应变先降低后增大，横向变形系数有所减小。基于试验结果，建立了冻融循环后自密实混凝土的归一化受压本构模型，与试验结果吻合较好。
- 冻融循环 /
- 自密实混凝土 /
- 本构关系 /
- 受压 /
- 抗冻性
Abstract: Concrete structures serving in cold regions are inevitably affected by freeze-thaw cycles. In this paper, the compressive constitutive relationship of self-compacting concrete after 0, 50, 100, 150, 200, 250 and 300 freeze-thaw cycles was investigated. The results showed that with the increasing freeze-thaw cycles, the mass loss of specimens increased, and the relative dynamic elastic modulus decreased. The self-compacting concrete could achieve the level of F300. The elastic modulus and peak stress of the specimen remained stable in the early stage of freeze-thaw test, and decreased significantly after 150 freeze-thaw cycles. As the number of freeze-thaw cycles increased, the peak strain decreased first and then increased, and the lateral deformation coefficient decreased. Based on the test results, the normalized compressive constitutive model of self-compacting concrete after freeze-thaw cycles was established, which was in good agreement with the experimental results.
- freeze-thaw cycles /
- self-compacting concrete /
- constitutive model /
- compression /
- frost resistance

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参考文献(18)

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冻融循环后自密实混凝土受压本构关系研究

doi: 10.13204/j.gyjz201906040002

作者简介:
刘凯华,男,1990年出生,博士,讲师。

通讯作者:
邹超英,男,1958年出生,博士,教授,cyzou@hit.edu.cn。

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RESEARCH ON THE COMPRESSIVE CONSTITUTIVE MODEL OF SELF-COMPACTING CONCRETE AFTER FREEZE-THAW CYCLES

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冻融循环后自密实混凝土受压本构关系研究

doi: 10.13204/j.gyjz201906040002

作者简介: 刘凯华,男,1990年出生,博士,讲师。

通讯作者: 邹超英,男,1958年出生,博士,教授,cyzou@hit.edu.cn。

计量

出版历程

RESEARCH ON THE COMPRESSIVE CONSTITUTIVE MODEL OF SELF-COMPACTING CONCRETE AFTER FREEZE-THAW CYCLES

计量

出版历程

目录

期刊在线

作者中心

友情链接

作者简介:
刘凯华,男,1990年出生,博士,讲师。

通讯作者:
邹超英,男,1958年出生,博士,教授,cyzou@hit.edu.cn。