[1]黄维,王婷,张雨婷,等.NC-UHPC界面抗剪性能试验及基于内聚力模型的仿真分析[J].华侨大学学报(自然科学版),2025,46(4):400-409.[doi:10.11830/ISSN.1000-5013.202501009]
　HUANG Wei,WANG Ting,ZHANG Yuting,et al.NC-UHPC Interface Shear Performance Test and Simulation Based on Cohesive Zone Model[J].Journal of Huaqiao University(Natural Science),2025,46(4):400-409.[doi:10.11830/ISSN.1000-5013.202501009]
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NC-UHPC界面抗剪性能试验及基于内聚力模型的仿真分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第46卷
期数:
2025年第4期
页码:
400-409
栏目:
出版日期:
2025-07-16

文章信息/Info

Title:
NC-UHPC Interface Shear Performance Test and Simulation Based on Cohesive Zone Model
文章编号:
1000-5013(2025)04-0400-10
作者:
黄维1; 2;  王婷1; 2;  张雨婷1; 2;  斯比努尔·下木希奴1; 2;  周知3
1. 武汉理工大学 新材料力学理论与应用湖北省重点实验室, 湖北 武汉 430070;2. 武汉理工大学 力学与工程科学系, 湖北 武汉 430070;3. 武汉理工大学 交通与物流工程学院, 湖北 武汉 430070
Author(s):
HUANG Wei1; 2;  WANG Ting1; 2;  ZHANG Yuting1; 2; SIBINUER·Xiamuxinu1; 2;  ZHOU Zhi3
1. Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, Wuhan University of Technology, Wuhan 430070, China; 2. Department of Mechanics and Engineering Sciences, Wuhan University of Technology, Wuhan 430070, China; 3. School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430070, China
关键词:
NC-UHPC界面;  单推试验;  数字图像相关;  有限元;  内聚力模型
Keywords:
NC-UHPC interface;  pushout test;  digital image correlation;  finite element;  cohesive zone model
分类号:
U454
DOI:
10.11830/ISSN.1000-5013.202501009
文献标志码:
A
摘要:
为探究超高性能混凝土(UHPC)与普通混凝土(NC)界面抗剪机理,通过9组NC-UHPC试件双面剪切试验,研究钢纤维掺量、混凝土龄期及边界约束条件对界面力学性能的影响规律。结合ABAQUS软件建立含界面粘结-滑移特性的精细化有限元模型,并通过理论推导构建界面粘结应力分布模型。结果表明:在无约束工况下,低钢纤维掺量(体积分数为0%~1%)试件呈现单面破坏特征,而固定NC试块下端可有效激发双剪破坏模式;UHPC钢纤维掺量与界面抗剪强度呈正相关,而界面刚度受钢纤维掺量影响较小;UHPC龄期增长可提升界面刚度,而NC龄期增加则产生抑制作用;建立的有限元模型能有效表征界面损伤演化过程,但对双剪试件非对称应变场的模拟存在局限性;基于能量守恒原理建立界面荷载-位移两参数模型,其预测结果与试验数据具有良好一致性。
Abstract:
To investigate the shear mechanism at the interface between ultra-high performance concrete(UHPC)and normal concrete(NC), nine groups of double-sided shear tests were conducted on NC-UHPC specimens, the effects of steel fiber content, concrete age, and boundary constraint conditions on interfacial mechanical properties were studied. Combining with ABAQUS software, a refined finite element model considering interfacial bond-slip characteristics was established, and an interfacial bond stress distribution model was constructed through theoretical derivation. The results show that under unrestrained conditions, specimens with low steel fiber content(0%-1% volume fraction)exhibit single-surface failure characteristics, while fixing the bottom of the NC blocks effectively activates a dual-surface failure mode. The steel fiber content in UHPC positively correlates with the interfacial shear strength, while the interfacial stiffness is less affected by the steel fiber content. The increase of UHPC age enhances interfacial stiffness, while higher NC age has the inhibitory effect. The proposed finite element model effectively simulates the damage evolution at the interface, but simulates the asymmetric strain field in double-shear specimens with limitations. Based on the principle of energy conservation, the two-parameter model of interfacial load-displacement is established, and its prediction results conforms well with the test data.

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备注/Memo

备注/Memo:
收稿日期: 2025-01-09
通信作者: 黄维(1986-),男,副教授,博士,主要从事工程材料力学性能的研究。E-mail:whuang@whut.edu.cn。
基金项目: 湖北省青年科技人才联合项目(2023DJC001); 国家级大学生创新创业训练计划项目(S202310497204)https://hdxb.hqu.edu.cn/
更新日期/Last Update: 2025-07-20