圆钢管高强卵石机制砂混凝土粘结滑移本构模型

兰州理工大学学报 ›› 2025, Vol. 51 ›› Issue (3): 119-126.

圆钢管高强卵石机制砂混凝土粘结滑移本构模型

管民生^*1,2, 郑宗颖^1,2, 张坤¹, 杜宏彪¹

1.深圳大学土木与交通工程学院, 广东深圳 518060;
2.滨海城市韧性基础设施教育部重点实验室(深圳大学), 广东深圳 518060

收稿日期:2022-09-22 出版日期:2025-06-28 发布日期:2025-06-30
通讯作者: 管民生(1979-),男,湖北黄冈人,博士,副教授.Email:msguan@szu.edu.cn
基金资助:
国家自然科学基金(52090082)

Bond slip constitutive model of circular steel tube and high-strength pebble mechanism sand concrete

GUAN Min-sheng^1,2, ZHENG Zong-ying^1,2, ZHANG Kun¹, DU Hong-biao¹

1. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China;
2. Key Laboratory of Coastal Urban Resilient Infrastructures (Shenzhen University), Ministry of Education, Shenzhen 518060, China

Received:2022-09-22 Online:2025-06-28 Published:2025-06-30

摘要/Abstract

摘要： 为研究圆钢管高强卵石机制砂混凝土界面粘结滑移性能,通过27根圆钢管高强卵石机制砂混凝土短柱试件的推出试验,获取荷载-滑移曲线参数,分析了试件粘结滑移的发展阶段与机理,考察了试件不同位置分布对于粘结滑移性能的影响,推导了考虑位置变化的粘结应力-滑移本构模型.结果表明,圆钢管高强卵石机制砂混凝土粘结滑移经历了胶结、滑移、摩阻力和后滑移四个阶段,试件不同位置处发生滑移的顺序不同;验证了所提出的圆钢管机制砂混凝土粘结滑移本构在本文推出试验试件中的适用性,并基于上述本构模型,通过引入位置函数反映了试件局部粘结强度和滑移值的变化特点,提出了考虑位置变化的粘结滑移本构模型,该改进模型能更完全地反映局部粘结滑移规律和机理.

关键词: 粘结应力-滑移本构模型, 粘结滑移, 粘结强度, 圆钢管高强卵石机制砂混凝土

Abstract: In order to study the interfacial bond and slid performance of high-strength pebble mechanism sand concrete with circular steel tube, pull-out tests were conducted on 27 short column specimens of high-strength pebble mechanism sand concrete and circular steel tubes to obtain load slip curve parameters. The development stages and mechanisms of bond and slid of the specimens were analyzed, and the influence of different position distributions on bond and slid performance was investigated. A bond stress slip constitutive model considering position changes was derived. The results show that the bond and slid of high-strength pebble mechanism sand concrete with round steel tubes go through four stages: bond, slid, frictional resistance, and post slid. The order of slid at different positions of the specimen is different. The applicability of the proposed constitutive model for bond and slid of circular steel tube and high-strength pebble mechanism sand concrete in the experimental specimens introduced in this paper was verified. Based on the above constitutive model, the changes in local bond strength and slid values of the specimens were reflected by introducing a position function. A bond and slid constitutive model considering position changes was proposed, which can more fully reflect the local bond and slid laws and mechanisms.

Key words: bond stress slip constitutive model, bond slip, bond strength, circular steel tube, high-strength pebble mechanism sand concrete

中图分类号:

TU528

管民生, 郑宗颖, 张坤, 杜宏彪. 圆钢管高强卵石机制砂混凝土粘结滑移本构模型[J]. 兰州理工大学学报, 2025, 51(3): 119-126.

GUAN Min-sheng, ZHENG Zong-ying, ZHANG Kun, DU Hong-biao. Bond slip constitutive model of circular steel tube and high-strength pebble mechanism sand concrete[J]. Journal of Lanzhou University of Technology, 2025, 51(3): 119-126.

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