赵军,谌李平,姚敦敏,等.钢筋连接用套筒灌浆料受压本构关系研究[J].河南理工大学学报（自然科学版）,2026,45(6):175-184.

Zhao J, Shen L P, Yao D M,et al.Study on the compressive constitutive relationship of sleeve grouting material for steel bar connection[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(6):175-184.

钢筋连接用套筒灌浆料受压本构关系研究

赵军1, 谌李平1, 姚敦敏1, 刘其舟2

1.桂林电子科技大学 建筑与交通工程学院，广西 桂林  541004；2.桂林理工大学 土木工程学院，广西 桂林  541004

摘要: 目的 为了探究钢筋连接用套筒灌浆料的抗压特性、受压行为随龄期变化规律和受压本构关系，进行钢筋连接用套筒灌浆料受压本构关系研究。  方法 针对不同龄期和形状的灌浆料试块进行抗压试验及有限元分析。 结果 结果表明，3 d龄期时，标准试块抗压强度和圆柱体试块分别达到28 d抗压强度的70%，63%，表明2种试块3 d内的抗压强度增长极为迅速。随着龄期从3 d增加到28 d，试块抗压强度增长速度明显减缓，最终抗压强度比3 d时仅提升约30%。通过轴心受压试验得到的应力-应变曲线能很好地反映灌浆料随龄期增长的应力-应变关系，峰值应力与标准试块的抗压强度之间存在显著差异，弹性模量随着龄期增加逐渐增大。峰值应变在灌浆料的早期阶段增长尤为迅速。基于实测的应力-应变值，建立灌浆料的拟合本构与统计损伤本构模型。使用有限元软件对建立的本构模型进行模拟分析，模拟结果与实际试验结果高度吻合，验证了该本构模型的可行性和可靠性。  结论 研究结果揭示了套筒灌浆料抗压性能随龄期变化的规律，通过构建并验证本构模型的可靠性，为灌浆料在钢筋连接工程中的设计、数值模拟、应用与优化提供了重要的理论基础与实践指导。

关键词:套筒灌浆料;抗压强度;本构模型;应力-应变曲线;有限元分析

doi:10.16186/j.cnki.1673-9787.2024070042

基金项目:国家自然科学基金资助项目（52368014）；广西研究生教育创新计划项目（YCSW2024330）

收稿日期:2024/07/09

修回日期:2024/09/29

出版日期:2026/10/09

Study on the compressive constitutive relationship of sleeve grouting material for steel bar connection

Zhao Jun1, Shen Liping1, Yao Dunmin1, Liu Qizhou2

1.School of Architecture and Transportation Engineering， Guilin University of Electronic Technology， Guilin  541004， Guangxi， China；2.College of Civil Engineering， Guilin Uuniversity of Technology， Guilin  541004， Guangxi， China

Abstract: Objectives The objective of this study was to investigate the compressive properties， age-dependent compressive behavior， and compressive constitutive relationship of sleeve grouting materials for steel bar connections.  Methods Compression tests and finite element analyses were performed on grouting material specimens with different ages and shapes.  Results The results showed that， at 3 days， the compressive strengths of standard and cylindrical specimens reached 70% and 63% of their respective 28-day compressive strengths， indicating that the compressive strength of both specimens increased rapidly within the first 3 days. However， as the age increased from 3 to 28 days， the growth rate of compressive strength decreased significantly， and the final compressive strength increased by only approximately 30% compared with that at 3 days. The stress-strain curves obtained from axial compression tests effectively reflected the age-dependent stress-strain behavior of the grouting material， A significant difference existed between the peak stress and the compressive strength of the standard specimens， and the elastic modulus gradually increased with age. The peak strain increased particularly rapidly at early ages. Based on the measured stress-strain values， a fitted constitutive model and a statistical damage constitutive model were established. The established constitutive models were simulated and analyzed using finite element software. The simulation results were highly consistent with the experimental results， verifying the feasibility and reliability of the established constitutive models.  Conclusions The results revealed the age-dependent variation of the compressive properties of sleeve grouting materials. The establishment of constitutive models and verification of their reliability provide important theoretical foundations and practical guidance for the design， numerical simulation， application， and optimization of grouting materials in steel bar connection engineering.

Key words: sleeve grouting material; compressive strength; constitutive model; stress-strain curve; finite element analysis