Research status and future directions of defect detection in grouted splice sleeves: A review

Liu, Jiahe; Li, Dongsheng; Cui, Xiushi

doi:10.1016/j.conbuildmat.2023.133010

Cited by 7 publications

(3 citation statements)

References 83 publications

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“…Nevertheless, grouting defects are often related to GSSR joints, which damages the seismic behavior, and it is hard to quantify the adverse effects. [14][15][16] To achieve sufficient stress transfer between vertical connection bars in the shear wall, Jiao et al 17,18 developed a vertical joint using indirect laps between the U-shape reinforcements for PRCSWs. The precast walls showed similar seismic behavior to the CIP wall.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance and parametric study of precast reinforced concrete Shear Wall structure with indirect‐lapping joints

Wang,

Zhao,

et al. 2024

Structural Concrete

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Precast reinforced concrete (RC) shear wall structures (PRCSWS) are widely adopted by high‐rise buildings owing to their attractive advantages such as high construction quality and seismic resistance. A novel vertical joint for PRCSWS was proposed, featured by the indirect lap between connection cages and vertical distributed bars of the wall panel. The feasibility of this joint was verified by pseudo‐static experiments on precast shear wall specimens with different joint designs and a referential cast‐in‐place (CIP) specimen. To gain more insights into the failure mechanism of the PRCSWS with different joint designs, non‐linear finite element (FE) models were established and analyzed for the numerical study. The simulation showed good agreement with the experimental result regarding the load‐drift curves, cracking patterns, and failure modes, exhibiting a flexural‐shear failure with corner concrete crushing. The investigation into the failure patterns of four specimens indicated that anchorage deterioration of interfaces inside the joints was induced by cyclic tension, leading to both reductions in ductility and energy dissipation. This effect was more obvious when the connection cages (a design parameter) were less and more concentrated. The parametric study revealed that increasing the anchorage length of connection cage in wall panel and additional confinement reinforcements surrounding the reserved ducts could reduce the relative slip on the interfaces and enhance the anchorage of connection cages, which could further improve the seismic performance of PRCSWS.

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Section: Introductionmentioning

confidence: 99%

Seismic performance and parametric study of precast reinforced concrete Shear Wall structure with indirect‐lapping joints

Wang,

Zhao,

et al. 2024

Structural Concrete

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“…The authors of this study reviewed the detection techniques of GS defects in their previous work [12] and found that most of the current detection techniques are only used to detect the presence of defects, not to quantify them. Li et al [13] and Ma et al [14] found that using 150 kHz ultrasound can accurately distinguish between grouted and ungrouted GSs.…”

Section: Introductionmentioning

confidence: 99%

“…Yao et al [15] evaluated the quality of grouting in GSs via the energy received by a damping sensor, and they considered the engineering quality to be substandard if the energy was higher than 180. In addition, [12] indicated that the guided wave technique has more advantages than traditional ultrasound methods in detecting longitudinal debonding in GSs because of the longer propagation distance and lower attenuation [16].…”

Section: Introductionmentioning

confidence: 99%

Debonding Detection in Grouted Sleeves Using Axisymmetric Longitudinal Guided Waves

Liu,

Li,

Cui

2023

Sensors

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Grouted sleeves (GSs) are a type of precast joint that can effectively connect steel rebars with excellent performance. However, the grouting debonding problem, which can occur due to the leakage of the glue plug, can seriously affect the properties of GSs. In this paper, a guided-wave-based structural health monitoring (SHM) method is used to detect debonding in GSs. The axisymmetric longitudinal mode is selected as the incident wave since it is sensitive to axial damage. Eight piezoelectrics (PZTs) are then symmetrically installed to actuate signals. The proposed samples are GSs with four different debonding sizes. First, the relationship between the arrival time of the first wave packet and the debonding size is explored through theoretical derivation. The arrival time decreases linearly with an increasing debonding size. A similar trend is observed when the relationship is verified via a numerical simulation and experimental results. This method will provide a reference for detecting debonding in similar GS multilayer structures.

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Experimental study on the axial compressive performance of prefabricated steel reinforcement cage‐cast‐in‐situ concrete column with an innovative sleeve

Zhang,

Bai,

Luo

et al. 2024

Structural Concrete

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Based on the ribbed rebar with direct rolling thread and hot‐forged double‐lock nut mechanical sleeve connection technology, a construction method for prefabricated reinforcement cage‐cast‐in‐situ concrete (PRC‐CISC) column using this connection is proposed. This method contributes to improving the construction efficiency and engineering quality of reinforced concrete columns. Four PRC‐CISC columns and four control specimens were designed with rebar strength, rebar ratio, and rebar connection method as analysis parameters. A comparative study was conducted on their failure modes, axial compression performance, and rebar connector (coupler) working mechanisms. The results show that compared to the control specimens, the crack morphology of PRC‐CISC columns has no significant difference. However, the apparent yielding position of the reinforcement cage may occur on the cross‐sections where the rebar is located on both sides of the sleeve. The partial carrying capacity of the specimens may increase or decrease (≤4.08%), and the maximum deviation of the displacement ductility coefficient is 0.14, indicating that its strength and deformation differences are relatively small. Furthermore, the study reveals the random migration behavior of the control section of PRC‐CISC columns. When the specimens fail, the strain of the sleeve is significantly smaller than the rebar strain in the control specimens, while the concrete strain shows no significant difference. This is because the increase in the effective area of the sleeve shares the vertical load it bears. Finally, based on the test results, sleeve constitutive relationship, and random migration behavior of the control section, the compressive load capacity range of the positive section of PRC‐CISC columns is proposed. This method can effectively estimate their actual carrying capacity and is consistent with the force characteristics.

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Research status and future directions of defect detection in grouted splice sleeves: A review

Cited by 7 publications

References 83 publications

Seismic performance and parametric study of precast reinforced concrete Shear Wall structure with indirect‐lapping joints

Seismic performance and parametric study of precast reinforced concrete Shear Wall structure with indirect‐lapping joints

Debonding Detection in Grouted Sleeves Using Axisymmetric Longitudinal Guided Waves

Experimental study on the axial compressive performance of prefabricated steel reinforcement cage‐cast‐in‐situ concrete column with an innovative sleeve

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