玻璃钢夹砂管层间界面断裂行为及特性研究

doi:10.19936/j.cnki.2096-8000.20260828.007

复合材料科学与工程 ›› 2026, Vol. 0 ›› Issue (8): 52-60.DOI: 10.19936/j.cnki.2096-8000.20260828.007

玻璃钢夹砂管层间界面断裂行为及特性研究

冯建立¹, 王艳朝¹, 连海坤¹, 孙颖晖², 王清洲^2*

1.河北石太高速公路开发有限公司,石家庄 050000;
2.河北工业大学土木与交通学院,天津 300000

收稿日期:2025-06-17 出版日期:2026-08-28 发布日期:2026-09-24
通讯作者: 王清洲(1979—),男,博士,副教授,硕士生导师,研究方向为道路新材料与新技术,wqz1718@ 126.com。
作者简介:冯建立(1980—),男,学士,高级工程师,研究方向为桥梁工程。
基金资助:
河北省交通运输厅科技项目(ST-202410)

Study on the fracture behavior and characteristics of the interlaminar interface of FRP sand inclusion pipe

FENG Jianli¹, WANG Yanchao¹, LIAN Haikun¹, SUN Yinghui², WANG Qingzhou^2*

1. Hebei Shitai Expressway Development Co., Ltd., Shijiazhuang 050000, China;
2. School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300000, China

Received:2025-06-17 Online:2026-08-28 Published:2026-09-24

摘要/Abstract

摘要： 工程中,玻璃钢夹砂管缠绕层/夹砂层界面处易率先发生层间分离破坏,导致管材使用寿命缩短。基于原位拉伸试验构建层间界面内聚力断裂模型,以分析基体及薄弱界面断裂参数对层间界面裂纹演化过程及力学行为的影响规律。结果表明:基体内聚力参数变化虽不影响裂纹的起始时间,但其强度增强可显著延缓裂纹扩展,有效抑制颗粒-基体脱黏与层间分层协同破坏,从而提升整体抗拉强度;基体/颗粒界面与层间界面的耦合作用对裂纹演化路径具有显著调控作用,提升界面强度可缩短裂纹长度、延迟萌生,并增强抗拉性能;适度优化层间界面亦有助于改善整体力学性能和断裂延性。

关键词: 玻璃钢夹砂管, 层间界面破坏, 内聚力断裂模型, 力学行为

Abstract: In engineering applications, the interlayer interface between the winding layer and sand-embedded layer in glass fiber reinforced plastic mortar (GRPM) pipes is prone to delamination failure, which reduces the service life of the pipes. An interlayer interface cohesive fracture model was constructed based on in-situ tensile testing to analyze the influence of matrix and weak interface fracture parameters on the evolution of interlayer interface cracks and their mechanical behavior. The results show that although changes in the matrix cohesive parameters do not affect the crack initiation time, their strengthening significantly delays crack propagation, effectively suppressing particle-matrix debonding and interlayer delamination-induced synergistic failure, thereby enhancing overall tensile strength. The coupling effect between the matrix/particle interface and interlayer interface plays a significant role in regulating the crack evolution path. Improving interface strength can shorten the crack length, delay its initiation, and enhance tensile performance. Properly optimizing the interlayer interface also helps to improve the overall mechanical properties and fracture toughness.

Key words: GRPM pipes, interlayer interface failure, cohesive fracture model, mechanical behavior

中图分类号:

TB332

冯建立, 王艳朝, 连海坤, 孙颖晖, 王清洲. 玻璃钢夹砂管层间界面断裂行为及特性研究[J]. 复合材料科学与工程, 2026, 0(8): 52-60.

FENG Jianli, WANG Yanchao, LIAN Haikun, SUN Yinghui, WANG Qingzhou. Study on the fracture behavior and characteristics of the interlaminar interface of FRP sand inclusion pipe[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(8): 52-60.

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玻璃钢夹砂管层间界面断裂行为及特性研究

Study on the fracture behavior and characteristics of the interlaminar interface of FRP sand inclusion pipe

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