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学者姓名：张建伟
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Abstract ：
To explore the influence of employing ultra-high strength steel bars (UHSB) in columns on the seismic performance of recycled aggregate concrete (RAC) beam-column joints, four beam-column joints were tested under constant axial load and cyclic lateral load. The results revealed that the shear failure at the end of beams occurred in all beam-column joints. And the crack widths of beam-column joints employing UHSB in columns satisfied the AIJ guidelines, indicating satisfactory resilience. Due to the weaker bonding between UHSB and RAC, the strain distribution of UHSB was more uniform than that of HRB600 grade steel bars in columns. Consequently, the finite element models of beam-column joints were established by setting nonlinear springs, ensuring accurate representation of the hysteretic behavior. The numerical results also confirmed that beam-column joints employing UHSB in columns had a slighter damage degree of RAC, and the strain of stirrups was smaller in the joint core. It was indicated that the shear force transferred from UHSB to joint cores was relatively smaller. In conclusion, beam-column joints employing UHSB in columns had good seismic performance and resilience, which can be applied to the resilient structures.
Keyword ：
seismic resilience seismic resilience Recycled aggregate concrete Recycled aggregate concrete beam-column joints beam-column joints mechanism analyses mechanism analyses ultra-high strength steel bars ultra-high strength steel bars
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| GB/T 7714 | Zhang, Jianwei , Liu, Weiheng , Zhang, Man et al. Seismic performance and mechanism analysis of recycled aggregate concrete beam-column joints employing ultra-high strength steel bars in columns [J]. | ADVANCES IN STRUCTURAL ENGINEERING , 2025 , 28 (7) : 1184-1202 . |
| MLA | Zhang, Jianwei et al. "Seismic performance and mechanism analysis of recycled aggregate concrete beam-column joints employing ultra-high strength steel bars in columns" . | ADVANCES IN STRUCTURAL ENGINEERING 28 . 7 (2025) : 1184-1202 . |
| APA | Zhang, Jianwei , Liu, Weiheng , Zhang, Man , Han, Ruize , Huang, Mengdi , Tang, Lin . Seismic performance and mechanism analysis of recycled aggregate concrete beam-column joints employing ultra-high strength steel bars in columns . | ADVANCES IN STRUCTURAL ENGINEERING , 2025 , 28 (7) , 1184-1202 . |
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Abstract ：
Waste concrete and waste bricks accounted for a large proportion of the construction and demolition waste. Converting them into recycled construction materials has become a promising treatment solution, and the produced recycled coarse aggregate can be referred to as recycled brick-concrete aggregate (RBCA). This study dealt with the mechanical properties and stress-strain behavior of RBCA concrete through thirty-nine uniaxial compression tests. The experimental parameters encompassed the recycled brick aggregate (RBA) replacement ratio, concrete strength, and stirrup ratio. The results indicated that the RBCA concrete experienced similar compression failure process compared with recycled concrete aggregate concrete (RAC), but the brittleness was more pronounced in the post-peak stage, especially when the RBA replacement ratio exceeded 40 %. The RBCA concrete presented a decrease in elastic modulus and an increase in peak strain with the RBA replacement ratio. The stress-strain curves exhibited brittle characteristics as the concrete strength increased, while stirrup confinement could delay the peak strain and ultimate strain of RBCA concrete, and effectively improve the brittleness. However, as the RBA content exceeded 40 %, the improvement effect was relatively insignificant. The key parameters were modified by considering the influence of RBA, and a unified calculation formula for the stress-strain curves of unconfined and rectilinear stirrup confined RBCA concrete was proposed. The calculation results were in good agreement with the experimental results, which can provide data support for the constitutive research of RBCA concrete with a RBA replacement ratio in the range of 0 %-50 %.
Keyword ：
Mechanical properties Mechanical properties Recycled brick-concrete aggregate Recycled brick-concrete aggregate Stirrup confined Stirrup confined Constitutive models Constitutive models Concrete Concrete
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| GB/T 7714 | Zhao, Di , Zhang, Jianwei , Liang, Haiyang et al. Mechanical properties and constitutive models of rectilinear stirrup confined recycled brick-concrete aggregate concrete [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 470 . |
| MLA | Zhao, Di et al. "Mechanical properties and constitutive models of rectilinear stirrup confined recycled brick-concrete aggregate concrete" . | CONSTRUCTION AND BUILDING MATERIALS 470 (2025) . |
| APA | Zhao, Di , Zhang, Jianwei , Liang, Haiyang , Sun, Yuping . Mechanical properties and constitutive models of rectilinear stirrup confined recycled brick-concrete aggregate concrete . | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 470 . |
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Abstract ：
The seismic behavior of six corroded recycled aggregate concrete (RAC) columns with ultra-high-strength bars (UHSB) was investigated through quasistatic test and numerical analysis. The main parameters include different corrosion ratios, axial load ratios (ALR), and stirrup ratios. The results revealed that: The damage development of the corroded specimen sped up with increasing corrosion ratio and ALR, and the corroded specimens suffered brittle shear failure due to the stirrup fracture or the concrete failure. The difference in carrying capacity of the specimens with low corrosion ratios and ALR was relatively small, while the deformation capacity was significantly reduced with increasing corrosion ratios and ALR. Reinforcement corrosion had a minor effect on the strength and stiffness degradation but would reduce the maximum cumulative energy dissipation capacity. By combining residual drift and residual crack width, the corroded specimens all could meet the limit of repairable residual drift and crack width before 4% drift, showing satisfactory resilient performance. Based on the modified corrosion models of materials, the numerical analysis showed the detrimental and coupling impact of the high ALR, high corrosion ratio, and low stirrup ratio on the carrying and deformation capacity. Through numerical analysis data, an equation was proposed that can satisfactorily predict the peak drift of the corroded columns with UHSB.
Keyword ：
seismic performance seismic performance recycled aggregate concrete recycled aggregate concrete corrosion corrosion ultra-high-strength bars ultra-high-strength bars resilient column resilient column
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| GB/T 7714 | Zhang, Jianwei , Wang, Fei , Zhao, Di et al. Hysteretic behavior of the corroded recycled aggregate concrete columns with ultra-high strength bars [J]. | ADVANCES IN STRUCTURAL ENGINEERING , 2024 , 27 (12) : 2023-2045 . |
| MLA | Zhang, Jianwei et al. "Hysteretic behavior of the corroded recycled aggregate concrete columns with ultra-high strength bars" . | ADVANCES IN STRUCTURAL ENGINEERING 27 . 12 (2024) : 2023-2045 . |
| APA | Zhang, Jianwei , Wang, Fei , Zhao, Di , Cao, Wanlin . Hysteretic behavior of the corroded recycled aggregate concrete columns with ultra-high strength bars . | ADVANCES IN STRUCTURAL ENGINEERING , 2024 , 27 (12) , 2023-2045 . |
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Abstract ：
In this paper, weakly bonded ultra-high-strength steel bars (DHSS) were used as longitudinal reinforcement in recycled aggregate concrete shear walls to achieve resilient performance. The study evaluated the repairability and hysteresis performance of shear walls before and after retrofitting. Quasi-static tests were performed on recycled aggregate concrete (RAC) and steel fiber reinforced recycled aggregate concrete (FRAC) shear walls to investigate the reparability of resilient shear walls when loaded to 1% drift ratio. Results showed that shear walls exhibited drift-hardening properties. The maximum residual drift ratio and residual crack width at 1% drift ratio were 0.107% and 0.01mm, respectively, which were within the repairable limits. Subsequently, shear walls were retrofitted with bonded X-shaped CFRP strips and steel plates wrapped at the bottom and retested. Except for a slight reduction in initial stiffness, earthquake-damaged resilient shear walls retrofitted with a composite method still had satisfactory hysteresis performance. A revised damage assessment index D, has been proposed to assess of damage degree. Moreover, finite-element analysis for the shear wall before and after retrofit retrofitting was established in OpenSees and verified with experimental results. The finite element results and test results were in good agreement. Finally, parametric analysis was performed.
Keyword ：
resilient shear walls resilient shear walls retrofit retrofit hysteresis performance hysteresis performance damage assessment damage assessment carbon-fiber0reinforced polymers carbon-fiber0reinforced polymers
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| GB/T 7714 | Zhang, Jianwei , Wang, Siyuan , Zhang, Man et al. Hysteresis performance of earthquake-damaged resilient RAC shear walls retrofitted with CFRP strips and steel plates [J]. | STEEL AND COMPOSITE STRUCTURES , 2024 , 52 (3) : 357-376 . |
| MLA | Zhang, Jianwei et al. "Hysteresis performance of earthquake-damaged resilient RAC shear walls retrofitted with CFRP strips and steel plates" . | STEEL AND COMPOSITE STRUCTURES 52 . 3 (2024) : 357-376 . |
| APA | Zhang, Jianwei , Wang, Siyuan , Zhang, Man , Sun, Yuping , Wang, Hongwei . Hysteresis performance of earthquake-damaged resilient RAC shear walls retrofitted with CFRP strips and steel plates . | STEEL AND COMPOSITE STRUCTURES , 2024 , 52 (3) , 357-376 . |
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Abstract ：
In order to investigate the seismic performance of earthquake-damaged high-strength recycled aggregate concrete (HSRAC) beam-column interior joints employing ultra-high strength bars (UHSB) in columns, four specimens were designed and manufactured. The research variables included whether the steel tube was encased in the column and whether beams were rehabilitated by bonding steel plates. Among them, the rehabilitated specimens were firstly loaded to 1.0 % drift ratio, and then loaded to failure after rehabilitating the plastic hinge of beams. The test results showed that the beam hinge failure mode occurred in the specimens loaded directly to failure. The damage of columns and joint cores was relatively slight, and the crack width satisfied the repairability limits before 2.0 % drift ratio. The shear failure of the joint core occurred in the rehabilitated specimen without steel tube, as shear deformation and stirrup strain in the joint core increased. The shear bearing capacity of joints increased after steel tubes were encased in columns, and the damage of joint cores was reduced. The bearing capacity and deformation capacity of specimens improved after rehabilitating. Finite element models were established and verified with experiment results. Parameter analysis was conducted for different pre- damage degrees, and the results indicated that as pre-damage degree increased, the bearing capacity of specimens decreased.
Keyword ：
Seismic performance Seismic performance Ultra-high strength bars Ultra-high strength bars Resilient beam-column interior joint Resilient beam-column interior joint Earthquake-damage rehabilitation Earthquake-damage rehabilitation High-strength recycled aggregate concrete High-strength recycled aggregate concrete
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| GB/T 7714 | Zhang, Jianwei , Tang, Lin , Liu, Weiheng et al. Seismic performance of earthquake-damaged HSRAC beam-column interior joints rehabilitated by bonding steel plates in the plastic hinge of beams [J]. | STRUCTURES , 2024 , 69 . |
| MLA | Zhang, Jianwei et al. "Seismic performance of earthquake-damaged HSRAC beam-column interior joints rehabilitated by bonding steel plates in the plastic hinge of beams" . | STRUCTURES 69 (2024) . |
| APA | Zhang, Jianwei , Tang, Lin , Liu, Weiheng , Zhang, Man . Seismic performance of earthquake-damaged HSRAC beam-column interior joints rehabilitated by bonding steel plates in the plastic hinge of beams . | STRUCTURES , 2024 , 69 . |
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Abstract ：
This paper aims to investigate and compare the seismic behavior of precast resilient wall and cast-in-situ resilient wall with different shear-span ratios, and to explore the reliability of the proposed precast wall in practical engineering. For this purpose, quasi-static tests were conducted on the precast walls and cast-in-situ walls with two shear span ratios of 2.2 and 1.5. The experimental variables also involved in the presence of steel fibers, and recycled aggregate concrete (RAC) strength. The seismic responses of tested walls, including damage state, load- displacements curves, stiffness degradation, and strain development were analyzed. In addition, residual drift ratio, and damage index were used to assess the resilient performance and damage degree. The comparison results indicated that precast walls can exhibit seismic and resilient performance comparable to that of cast-in- situ walls. Ultimately, considering the weak bond performance, the model analysis was conducted based on OpenSees platform, and parameter analysis of boundary longitudinal reinforcement has been carried out.
Keyword ：
Weak bond strength Weak bond strength Precast wall Precast wall Seismic performance Seismic performance Resilience Resilience Ultra-high-strength bars Ultra-high-strength bars
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| GB/T 7714 | Zhang, Man , Zhang, Jianwei , Li, Jianlin et al. Experimental study and model analysis on the seismic and resilient performance of RAC precast walls with UHSB [J]. | STRUCTURES , 2024 , 68 . |
| MLA | Zhang, Man et al. "Experimental study and model analysis on the seismic and resilient performance of RAC precast walls with UHSB" . | STRUCTURES 68 (2024) . |
| APA | Zhang, Man , Zhang, Jianwei , Li, Jianlin , Dong, Hongying . Experimental study and model analysis on the seismic and resilient performance of RAC precast walls with UHSB . | STRUCTURES , 2024 , 68 . |
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Abstract ：
This paper examines the results of bond-slip experiments on reinforced concrete with embedded ultrahighstrength steel bars with spiral grooves (UHSSBs). It includes the analysis of twenty-seven pullout specimens with different concrete compressive grades and embedment lengths to evaluate the bond responses. The rotations of UHSSBs are recorded during pullout tests to describe the theory behind the bonding mechanism of UHSSBs embedded in reinforced concrete. According to the test results, the specimens with higher concrete compressive strengths exhibited higher bond strengths. Moreover, all the specimens with different embedment lengths exhibited similar trends i.e., the bond strength decreased to different degrees with increasing embedment length. After the mechanisms of the bond behavior were described, a new analytical model was proposed to analyze the bond strengths of UHSSBs embedded in reinforced concrete under monotonically increasing tensile loads, taking into account the spiral characteristics of UHSSBs. Based on the model introduced, the parameters (i.e., the concrete strength and embedment length) affecting the analytical model were discussed, and the calculated bond strengths agreed well with the measured values, which indicated that the values could be obtained quickly and offered a reference for further practical structural design.
Keyword ：
Analytical model Analytical model grooves grooves Theory of bond mechanism Theory of bond mechanism Ultrahigh-strength steel bars with spiral Ultrahigh-strength steel bars with spiral Bond strength Bond strength
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| GB/T 7714 | Liu, Yujun , Zhang, Jianwei , Zhao, Di et al. Bond-slip response of ultrahigh-strength steel bars with spiral grooves embedded in reinforced concrete [J]. | STRUCTURES , 2024 , 70 . |
| MLA | Liu, Yujun et al. "Bond-slip response of ultrahigh-strength steel bars with spiral grooves embedded in reinforced concrete" . | STRUCTURES 70 (2024) . |
| APA | Liu, Yujun , Zhang, Jianwei , Zhao, Di , Tao, Xinyi , Zhang, Man . Bond-slip response of ultrahigh-strength steel bars with spiral grooves embedded in reinforced concrete . | STRUCTURES , 2024 , 70 . |
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Abstract ：
In order to investigate the impacts of corrosion damage on the seismic performance of recycled aggregate concrete (RAC) columns, the hysteretic behavior of the corroded RAC columns was studied through quasistatic tests and numerical analyses. The main parameters included different corrosion ratios, axial load ratios (ALR), and stirrup ratios. The results revealed that there were no significant differences in the carrying and deformation capacities of the corroded RAC column compared with the corroded NAC column. Under electrochemical chloride erosion conditions, the corrosion ratios of stirrups were on average 44.6% higher than those of longitudinal bars, and the crack widths of columns with different corrosion ratios varied little, ranging from 0.1 to 0.5 mm. Under a relatively low corrosion ratio (within 10%), the corrosion had a minor impact on the horizontal carrying capacity, but the deformation capacity of the corroded columns decreased with increasing corrosion ratio and ALR. The coupling effect of a high ALR and a high corrosion ratio could exacerbate the detrimental impact of corrosion, and special attention should be given to columns with an ALR exceeding 0.3 and a corrosion ratio exceeding 10%. In addition, the seismic performance of the corroded structure could be effectively simulated through the finite element model based on the modified corrosion model of the materials.
Keyword ：
Hysteretic behavior Hysteretic behavior Reinforced concrete column Reinforced concrete column Recycled aggregate concrete Recycled aggregate concrete Corrosion damage Corrosion damage
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| GB/T 7714 | Wang, Fei , Zhang, Jianwei , Zhao, Di et al. Seismic Performance of the Corroded Reinforced Recycled Aggregate Concrete Columns [J]. | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING , 2023 , 22 (4) : 655-674 . |
| MLA | Wang, Fei et al. "Seismic Performance of the Corroded Reinforced Recycled Aggregate Concrete Columns" . | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING 22 . 4 (2023) : 655-674 . |
| APA | Wang, Fei , Zhang, Jianwei , Zhao, Di , Wang, Haoyu . Seismic Performance of the Corroded Reinforced Recycled Aggregate Concrete Columns . | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING , 2023 , 22 (4) , 655-674 . |
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Abstract ：
In this paper, the axial compression performance and stress-strain relationship of confined high-strength recycled aggregate concrete (HSRAC) columns were investigated and assessed through uniaxial compression tests. The test variables included the recycled coarse aggregate replacement ratio (RCA-RR), stirrup ratio, steel fiber content, concrete strength, and carbon fiber-reinforced polymer sheet confinement. The results revealed that the incorporation of RCA in concrete led to an increase in the peak strain as well as a reduction in the elastic modulus and ductility. The brittle characteristic of HSRAC became more significant with the increase in the RCA-RR, which was reflected in the steeper descending branch of the stress-strain curve. However, enhancing lateral confinement or adding steel fibers could compensate for the weakness of the poor deformation capacity of HSRAC. The elastic-plastic deformation index of hoop-confined HSRAC with a 2% stirrup ratio was 69.70% higher than that of unconfined HSRAC. Meanwhile, the addition of steel fiber with a volume content of 1% improved the ultimate strain of hoop-confined HSRAC by 55.45%. Based on tests conducted on thirty columns, the analytic expression of the stress-strain model for the confined HSRAC was developed by regression analysis, and the accuracy of the recommended model was verified through finite element analysis.
Keyword ：
Confined concrete stress-strain model Confined concrete stress-strain model Finite element analysis Finite element analysis High-strength recycled aggregate concrete High-strength recycled aggregate concrete Axial compression performance Axial compression performance
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| GB/T 7714 | Liu, Xiao , Zhang, Jianwei , Zhang, Man et al. Stress-Strain Relationship in Axial Compression for Confined High-Strength Recycled Aggregate Concrete [J]. | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING , 2023 , 21 (12) : 1879-1896 . |
| MLA | Liu, Xiao et al. "Stress-Strain Relationship in Axial Compression for Confined High-Strength Recycled Aggregate Concrete" . | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING 21 . 12 (2023) : 1879-1896 . |
| APA | Liu, Xiao , Zhang, Jianwei , Zhang, Man , Cao, Wanlin . Stress-Strain Relationship in Axial Compression for Confined High-Strength Recycled Aggregate Concrete . | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING , 2023 , 21 (12) , 1879-1896 . |
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Abstract ：
This paper investigates the seismic behavior of concrete members incorporating recycled coarse aggregates. Tests were carried out on three full-scale specimens with a 600 mm side length. The main parameters include axial load ratio (ALR) and the employment of CFRP external confinement and spiraled groove ultra-high-strength steel bars (UHSSBs) with a nominal yield strength of 1400 MPa. Lateral cyclic displacement and co-existing axial load were applied to specimens. After describing the experiment results and observations, an iterative method was proposed to investigate the relationship between reinforcement slip and reinforcement stress. Based on the iterative method, the lateral capacity and displacement of members reinforced with UHSSBs were discussed. The recycled coarse aggregate concrete columns employed both the CFRP jacket and the UHSSBs can maintain positive lateral stiffness under a 4% drift and have less residual drifts compared with that of the traditional ductile column. Besides, the increase of ALR gives rise to higher residual drift. The method proposed here is capable of predicting the experimental yield loading capacity and the yield drift.
Keyword ：
Square concrete member Square concrete member Ultra-high-strength steel bar Ultra-high-strength steel bar CFRP jacket CFRP jacket Seismic loading Seismic loading Cyclic response Cyclic response External confinement External confinement Recycled coarse aggregate concrete Recycled coarse aggregate concrete Resilient structure Resilient structure
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| GB/T 7714 | Cai, Ruxing , Zhang, Jianwei , Liu, Yujun et al. Seismic behavior of recycled concrete columns reinforced with ultra-high-strength steel bars [J]. | ENGINEERING STRUCTURES , 2023 , 279 . |
| MLA | Cai, Ruxing et al. "Seismic behavior of recycled concrete columns reinforced with ultra-high-strength steel bars" . | ENGINEERING STRUCTURES 279 (2023) . |
| APA | Cai, Ruxing , Zhang, Jianwei , Liu, Yujun , Tao, Xinyi . Seismic behavior of recycled concrete columns reinforced with ultra-high-strength steel bars . | ENGINEERING STRUCTURES , 2023 , 279 . |
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