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学者姓名：张建伟
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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 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 ：
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 ：
新工科教育的提出,旨在促进学科之间的交叉融合,革新教育理念与模式,为国家培养多元化、创新型的工科人才,满足行业对工科人才的要求.土木工程专业亟需在新工科发展的背景下寻求创新并进行改造升级,智能建造专业的建设与推广冲击着土木工程专业这一传统的工科专业,但同时也为土木工程专业信息化建设带来了机会.基于国家战略要求,针对土木工程专业知识滞后、本研隔断等教学问题,以新工科背景下人才能力培养要求为出发点,依托北京工业大学土木工程学科优势,将信息化技术融入土木工程课程体系、教材体系、实践创新培养体系等各方面,进行土木工程教学实践创新.根据北京工业大学城市建设学部土木工程专业的改造升级要求,不断总结与归纳教学经验,以激发学生的学习兴趣和拓宽学生视野为教学目的,建立了融合信息技术的土木工程课程体系;融合VR等技术自主编写了多元立体化BIM技术系列教材,增强了学生对知识的理解能力;充分利用企业优质教学资源,搭建新工科背景下校企多方协同育人平台;注重科教融合,创新"学生竞赛-科技创新-教师科研"的交互模式.在具体的教学实践中,取得了良好的效果,为培养创新型工程人才提供了有力支撑,为传统土木工程学科改造奠定了基础.
Keyword ：
土木工程信息化 土木工程信息化 工程教育 工程教育 新工科 新工科 人才培养 人才培养
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| GB/T 7714 | 刘占省 , 李安修 , 杜修力 et al. 新工科背景下融合信息技术的土木工程教学实践创新 [J]. | 高等建筑教育 , 2023 , 32 (1) : 15-23 . |
| MLA | 刘占省 et al. "新工科背景下融合信息技术的土木工程教学实践创新" . | 高等建筑教育 32 . 1 (2023) : 15-23 . |
| APA | 刘占省 , 李安修 , 杜修力 , 张建伟 . 新工科背景下融合信息技术的土木工程教学实践创新 . | 高等建筑教育 , 2023 , 32 (1) , 15-23 . |
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Abstract ：
为适应新时代复合型工程技术创新人才培养需求,在本科教学过程中有机融入工程的自然属性和社会属性教育,提升土木工程专业本科生的工程实践与创新能力,创建了面向广义工程的"实践能力开放式培养模式""实践教学群体式指导模式"和"实践化创新能力培养模式",建设了"虚实结合、相互补充""产学研用有机融合"的本科生工程实践与创新能力培养实训平台,建立了突出学科优势的特色专业课程体系和课程群教学团队,探究了广义大工程的思想政治教育意蕴,构建了"1+2+N"土木工程专业课程思政教育课程体系,形成了土木工程专业复合型工程技术创新人才立体化培养模式,并进行了教学实践,取得了明显成效.
Keyword ：
培养模式 培养模式 创新能力 创新能力 工程实践能力 工程实践能力 本科生 本科生 土木工程专业 土木工程专业
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| GB/T 7714 | 张建伟 , 杜修力 , 乔崎云 et al. 土木工程专业复合型创新人才立体化培养模式构建与实践 [J]. | 当代教育理论与实践 , 2023 , 15 (1) : 53-57 . |
| MLA | 张建伟 et al. "土木工程专业复合型创新人才立体化培养模式构建与实践" . | 当代教育理论与实践 15 . 1 (2023) : 53-57 . |
| APA | 张建伟 , 杜修力 , 乔崎云 , 陈适才 . 土木工程专业复合型创新人才立体化培养模式构建与实践 . | 当代教育理论与实践 , 2023 , 15 (1) , 53-57 . |
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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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Abstract ：
Forty-five pull-out tests were carried out to investigate the bond behavior between recycled aggregate concrete (RAC) and ultrahigh-strength steel bars (UHSSBs) with spiral grooves. Bond performance influencing factors were taken into account to analyze the ultimate bond stress and slip, bond energy absorption, bond stiffness and residual bond stress, including UHSSB corrosion levels from 0 to 11%, recycled coarse aggregate (RCA) replacement ratios from 0 to 100%, stirrup ratios from 0.51 to 1.03%, UHSSB embedded length from 10d to 20d, concrete cover thickness from 30 to 70 mm, and anti-rust coating. Pull-out failure was observed in all specimens, and the experimental results showed that the bond strength and bond stiffness initially increased when the corrosion level was no more than 1.5% and then decreased with increasing corrosion levels. Corrosion-induced bond degradation decreased with increasing stirrup ratios and concrete cover thickness, and bond strength decreased with increasing embedded length of UHSSB and RCA replacement ratios. The anti-rust coating can effectively prevent UHSSBs from rusting but can lead to a decrease in bond strength by 37.3%. A bond strength model was proposed considering the corrosion levels of UHSSBs and RCA replacement ratios with presented predictions for the bond stress-slip relationship, which provided a reference for engineering design.
Keyword ：
Corrosion levels Corrosion levels Ultrahigh-strength steel bars Ultrahigh-strength steel bars Bond strength model Bond strength model Recycled aggregate concrete Recycled aggregate concrete Bond stress-slip relationship Bond stress-slip relationship Pull-out tests Pull-out tests
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| GB/T 7714 | Zhang, Jianwei , Peng, Jian , Tao, Xinyi et al. Bond Behavior Between Recycled Concrete and Corroded Ultrahigh-Strength Steel Bars [J]. | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING , 2023 , 21 (7) : 1195-1217 . |
| MLA | Zhang, Jianwei et al. "Bond Behavior Between Recycled Concrete and Corroded Ultrahigh-Strength Steel Bars" . | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING 21 . 7 (2023) : 1195-1217 . |
| APA | Zhang, Jianwei , Peng, Jian , Tao, Xinyi , Zhao, Di , Cao, Wanlin . Bond Behavior Between Recycled Concrete and Corroded Ultrahigh-Strength Steel Bars . | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING , 2023 , 21 (7) , 1195-1217 . |
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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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