Shear performance analysis of grouted sleeve connection region in precast assembled columns

IF 3.8 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Bulletin of Earthquake Engineering Pub Date : 2025-02-20 DOI:10.1007/s10518-025-02118-9

Hongtao Liu, Pengchao Kong, Wenxiao Chen, Xiuli Du

{"title":"Shear performance analysis of grouted sleeve connection region in precast assembled columns","authors":"Hongtao Liu, Pengchao Kong, Wenxiao Chen, Xiuli Du","doi":"10.1007/s10518-025-02118-9","DOIUrl":null,"url":null,"abstract":"<div><p>Grouted sleeves are widely used in precast assembled structures. Many experiments show that grouted sleeves enhance strength and stiffness in the Grouted Sleeve Connection Region (GSCR) of precast columns. However, measuring the GSCR’s shear strength is challenging in tests due to sleeve length, as it’s an inherent part of these columns. Firstly, the GSCR mechanics model was developed using Modified Compression Field Theory (MCFT). A shear strength calculation method for GSCR was also proposed by analyzing its cross-sectional strains. Subsequently, the logic of the calculation process was validated by calculating the shear strength of cast-in-place short columns and its accuracy was confirmed through finite element analysis. Finally, the effect of grouted sleeves on GSCR’s shear strength under varying axial compression and moment was analyzed using the established computational method. The analysis showed that the shear strength of GSCR was significantly higher than the shear strength normal concrete section. The grouted sleeves bore most of the shear force. The GSCR section’s shear strength increased with rising axial compression ratio but weakened as the bending moment grew. These findings offer valuable insights into the analysis of shear strength in regions with grouted sleeves.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 5","pages":"2085 - 2112"},"PeriodicalIF":3.8000,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Earthquake Engineering","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10518-025-02118-9","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Grouted sleeves are widely used in precast assembled structures. Many experiments show that grouted sleeves enhance strength and stiffness in the Grouted Sleeve Connection Region (GSCR) of precast columns. However, measuring the GSCR’s shear strength is challenging in tests due to sleeve length, as it’s an inherent part of these columns. Firstly, the GSCR mechanics model was developed using Modified Compression Field Theory (MCFT). A shear strength calculation method for GSCR was also proposed by analyzing its cross-sectional strains. Subsequently, the logic of the calculation process was validated by calculating the shear strength of cast-in-place short columns and its accuracy was confirmed through finite element analysis. Finally, the effect of grouted sleeves on GSCR’s shear strength under varying axial compression and moment was analyzed using the established computational method. The analysis showed that the shear strength of GSCR was significantly higher than the shear strength normal concrete section. The grouted sleeves bore most of the shear force. The GSCR section’s shear strength increased with rising axial compression ratio but weakened as the bending moment grew. These findings offer valuable insights into the analysis of shear strength in regions with grouted sleeves.

查看原文本刊更多论文

预制装配式支柱中灌浆套筒连接区域的抗剪性能分析

灌浆套筒广泛应用于预制拼装结构。大量试验表明，灌浆套筒提高了预制柱灌浆套筒连接区域的强度和刚度。然而，由于套筒长度的原因，测量GSCR的抗剪强度在测试中具有挑战性，因为它是这些柱的固有部分。首先，利用修正压缩场理论（MCFT）建立了GSCR的力学模型。通过分析其截面应变，提出了一种计算GSCR抗剪强度的方法。随后，通过现浇短柱抗剪强度计算验证了计算过程的逻辑，并通过有限元分析验证了计算过程的准确性。最后，利用所建立的计算方法，分析了不同轴压和弯矩条件下灌浆套筒对GSCR抗剪强度的影响。分析表明，GSCR的抗剪强度明显高于普通混凝土截面的抗剪强度。灌浆套筒承受了大部分剪力。GSCR截面抗剪强度随轴压比的增大而增大，但随弯矩的增大而减弱。这些发现为注浆套管区域的抗剪强度分析提供了有价值的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Bulletin of Earthquake Engineering 工程技术-地球科学综合

CiteScore

8.90

自引率

19.60%

发文量

263

审稿时长

7.5 months

期刊介绍： Bulletin of Earthquake Engineering presents original, peer-reviewed papers on research related to the broad spectrum of earthquake engineering. The journal offers a forum for presentation and discussion of such matters as European damaging earthquakes, new developments in earthquake regulations, and national policies applied after major seismic events, including strengthening of existing buildings. Coverage includes seismic hazard studies and methods for mitigation of risk; earthquake source mechanism and strong motion characterization and their use for engineering applications; geological and geotechnical site conditions under earthquake excitations; cyclic behavior of soils; analysis and design of earth structures and foundations under seismic conditions; zonation and microzonation methodologies; earthquake scenarios and vulnerability assessments; earthquake codes and improvements, and much more. This is the Official Publication of the European Association for Earthquake Engineering.