Flexural strengthening of reinforced concrete T-beams using a composite of prestressed steel wire ropes embedded in polyurethane cement (PSWR-PUC): Theoretical analysis

Zhang, Kexin; Shen, Xiao‐Jun; Liu, Jicheng; Teng, Fei; Zhang, Hang; Wang, Jiawei

doi:10.1016/j.istruc.2022.08.014

Cited by 6 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are methods for modeling numerical equations, such as the differential orthogonal method [52], Bessel multi-step method [53], and finite difference method [54]. According to references [52][53][54][55][56][57] and experimental findings, it has been observed that the ductility coefficient of the component is associated with the axial load ratio, volumetric From Figure 7, it can be seen that compared with the unreinforced column, the reinforced specimens significantly improved their energy dissipation capacity, especially the specimens with mixed reinforcement, which increased their energy dissipation capacity by 3.2 times. It can be concluded that the energy dissipation capacity of the specimen is most significantly improved under the mixed reinforcement of prestressed steel wire rope and polyurethane cement composite material, and this reinforcement method provides the best constraint effect for the specimen.…”

Section: Calculated Ductility Coefficient Of the Componentmentioning

confidence: 99%

“…There are methods for modeling numerical equations, such as the differential orthogonal method [52], Bessel multi-step method [53], and finite difference method [54]. According to references [52][53][54][55][56][57] and experimental findings, it has been observed that the ductility coefficient of the component is associated with the axial load ratio, volumetric stirrup spacing characteristic value, and the volumetric stirrup characteristic value of the strengthening material. The approach for calculating the overall stirrup characteristic value is based on the methodology outlined in references [52,56] for the volumetric stirrup characteristic values provided for stirrups and carbon fibers:…”

Section: Calculated Ductility Coefficient Of the Componentmentioning

confidence: 99%

“…According to references [52][53][54][55][56][57] and experimental findings, it has been observed that the ductility coefficient of the component is associated with the axial load ratio, volumetric stirrup spacing characteristic value, and the volumetric stirrup characteristic value of the strengthening material. The approach for calculating the overall stirrup characteristic value is based on the methodology outlined in references [52,56] for the volumetric stirrup characteristic values provided for stirrups and carbon fibers:…”

Section: Calculated Ductility Coefficient Of the Componentmentioning

confidence: 99%

“…ε CFS ε u In this paper, the impact of parameters including axial compression ratio, concrete strength grade, and overall characteristic value of reinforcement on the displacement ductility coefficient of RC columns is taken into consideration. A function is established based on the literature [51,52], with the following form:…”

Section: Calculated Ductility Coefficient Of the Componentmentioning

confidence: 99%

See 3 more Smart Citations

Seismic Performance Analysis of Concrete Columns Reinforced with Prestressed Wire Ropes Embedded in Polyurethane Cement Composites

Guo,

Zhang,

Chen

et al. 2024

Buildings

View full text Add to dashboard Cite

In order to improve the seismic performance of reinforced concrete (RC) columns, a reinforcement technology using prestressed steel wire ropes embedded in polyurethane cement composite material is proposed. Four concrete columns reinforced with different materials were subjected to a combination of axial compression and horizontally repeated loading tests (one of which was not reinforced, while the remaining three were reinforced with prestressed steel wire rope, polyurethane cement composite material, and prestressed steel wire ropes embedded in polyurethane cement composite material). The experimental results show that the ductility and energy dissipation capacity of reinforced concrete columns after reinforcement are significantly improved. After strengthening with prestressed steel wire ropes embedded in polyurethane cement composite material, the ultimate horizontal displacement and energy dissipation capacity of reinforced concrete columns were significantly improved, which were 69% and 3.2 times higher than those of unreinforced columns, respectively.

show abstract

Section: Calculated Ductility Coefficient Of the Componentmentioning

confidence: 99%

“…There are methods for modeling numerical equations, such as the differential orthogonal method [52], Bessel multi-step method [53], and finite difference method [54]. According to references [52][53][54][55][56][57] and experimental findings, it has been observed that the ductility coefficient of the component is associated with the axial load ratio, volumetric stirrup spacing characteristic value, and the volumetric stirrup characteristic value of the strengthening material. The approach for calculating the overall stirrup characteristic value is based on the methodology outlined in references [52,56] for the volumetric stirrup characteristic values provided for stirrups and carbon fibers:…”

Section: Calculated Ductility Coefficient Of the Componentmentioning

confidence: 99%

Section: Calculated Ductility Coefficient Of the Componentmentioning

confidence: 99%

Section: Calculated Ductility Coefficient Of the Componentmentioning

confidence: 99%

See 2 more Smart Citations

Seismic Performance Analysis of Concrete Columns Reinforced with Prestressed Wire Ropes Embedded in Polyurethane Cement Composites

Guo,

Zhang,

Chen

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

“…This can extend the service life of the steel wire rope and improve its corrosion resistance. Secondly, the polyurethane cement layer can evenly transfer the force applied to the wire rope to the concrete structure [46]. It provides a strong embedded layer, which enables the wire rope to effectively withstand forces such as tension and shear, thus ensuring a more efficient and stable force transmission effect.…”

Section: Characteristics Of Pswr-pucmentioning

confidence: 99%

Static Load Test Analysis of T-Beam Bridge Shear Strengthening by Prestressed Steel Wire Rope Embedded in Polyurethane Cement (PSWR-PUC)

Liu

Jian

et al. 2023

Sustainability

View full text Add to dashboard Cite

Many bridges suffer from aging and deterioration problems and need to be strengthened. PSWR-PUC is an emerging structural strengthening technology that enhances the load-bearing capacity of concrete bridges by embedding prestressed steel wire ropes into polyurethane cement. This paper focuses on investigating the shear reinforcement effectiveness of PSWR-PUC. Firstly, the composition of PSWR-PUC is introduced. Subsequently, two T-beam bridges in similar service condition are selected, and shear strengthening schemes involving PSWR-PUC and externally bonded steel plates are devised. Lastly, static loading tests are conducted, and the deflection and strain data of the two bridges before and after reinforcement intervention are analyzed. The results indicate that both strengthening methods improve the bridge load-carrying capacity. However, compared to the bridge strengthened with the externally bonded steel plate method, the deflections in the bridge strengthened with PSWR-PUC decreased by 36.8% and 42.1%, the strains decreased by 18% and 23%, and the shear stiffness was improved to a greater extent. These results verified that the PSWR-PUC strengthening method is effective for improving structural capacity and performance. This study will contribute to an in-depth understanding of the performance characteristics and application scope of PSWR-PUC shear strengthening technology, and it provides a scientific basis and guidance for practical engineering applications.

show abstract

Experimental study on RC beams shear‐strengthened with composite polymer mortar and steel strands wire mesh

Wang,

He,

et al. 2024

Structural Concrete

View full text Add to dashboard Cite

This paper presents an experimental investigation of the use of composite polymer mortar (CPM) and steel strands wire mesh (SSWM) to strengthen reinforced concrete (RC) beams in shear. In order to maximize the shear resistance of the steel strands, a new type of anchor device called wedge‐shaped steel plate hoops (WSSPHs) was developed. And the study aimed to examine the effect of shear‐to‐span ratio and prestressing level on the mechanical properties of the beams. A total of nine beams were constructed and tested under four‐point bending monotonic load, comprising three control beams and six strengthened beams. The study analyzed the damage modes, load‐deflection curves, strength, stiffness, and ductility of the beams. The test results indicated that (1) the mechanical properties of the strengthened beams were improved, with the shear capacity improving by 38.47%–71.37% after strengthening. (2) It was observed that SSWM could be utilized more effectively in high shear‐to‐span ratio beams among the strengthened beams with the same prestressing level. (3) Additionally, the larger prestressing level was found to change the design damage mode of the test beams, with RB‐2.5‐0.5 failing in bending. Finally, a model was proposed to predict the shear capacity of the test beams based on the specification GB 50011‐2010. The model considered the effect of the initial prestressing of the steel strands.

show abstract

Flexural strengthening of reinforced concrete T-beams using a composite of prestressed steel wire ropes embedded in polyurethane cement (PSWR-PUC): Theoretical analysis

Cited by 6 publications

References 16 publications

Seismic Performance Analysis of Concrete Columns Reinforced with Prestressed Wire Ropes Embedded in Polyurethane Cement Composites

Seismic Performance Analysis of Concrete Columns Reinforced with Prestressed Wire Ropes Embedded in Polyurethane Cement Composites

Static Load Test Analysis of T-Beam Bridge Shear Strengthening by Prestressed Steel Wire Rope Embedded in Polyurethane Cement (PSWR-PUC)

Experimental study on RC beams shear‐strengthened with composite polymer mortar and steel strands wire mesh

Contact Info

Product

Resources

About