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学者姓名:张建伟
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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 . |
MLA | Wang, Fei et al. "Seismic Performance of the Corroded Reinforced Recycled Aggregate Concrete Columns" . | INTERNATIONAL JOURNAL OF CIVIL ENGINEERING (2023) . |
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 . |
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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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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 :
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 :
为提高土木工程专业研究生的创新能力培养水平,分析了影响研究生创新能力培养质量的生源、学位论文、导师、培养环境、培养模式、培养体系、大工程7个关键因素,揭示了7个关键因素间互动发展的内在规律,进行了较系统的教育理念、教学方法、教学手段改革,建设了强化研究生工程创新能力培养的四大实训平台,即校内综合实验实训平台、校内外共享实训平台、创新联盟实训平台、大工程产业基地实训平台,提出了提升研究生创新能力的三种培养模式,即大工程下实践化研发模式、群体型研讨模式、开放式培养模式,创建了产学研用相融合的立体化研究生创新能力培养体系,并进行了教学实践,取得了显著成效,研究生的团队意识、工程实践能力和创新能力明显...
Keyword :
创新能力 创新能力 大工程 大工程 土木工程 土木工程 研究生 研究生 培养体系 培养体系
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GB/T 7714 | 张建伟 , 曹万林 , 董宏英 et al. 基于大工程观的土木工程研究生创新能力培养体系构建与实践 [J]. | 高等建筑教育 , 2022 , 31 (02) : 53-58 . |
MLA | 张建伟 et al. "基于大工程观的土木工程研究生创新能力培养体系构建与实践" . | 高等建筑教育 31 . 02 (2022) : 53-58 . |
APA | 张建伟 , 曹万林 , 董宏英 , 乔崎云 . 基于大工程观的土木工程研究生创新能力培养体系构建与实践 . | 高等建筑教育 , 2022 , 31 (02) , 53-58 . |
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Abstract :
为了解水平地震作用下边缘暗柱配置超高强纵筋的高强再生混凝土中高剪力墙抗震性能,基于剪力墙低周往复荷载试验,建立了剪力墙的ABAQUS有限元分析模型,分析了边缘暗柱纵筋强度、墙体配筋构造形式以及轴压比对该类剪力墙的抗震性能影响规律,结果表明:在边缘暗柱中配置弱粘结超高强纵筋能够提高墙体的水平承载力,避免底部塑性铰区域边缘纵筋应力集中现象,为剪力墙提供较好的震后弹性恢复力;墙体设置超高强纵筋暗支撑可以大幅度提高剪力墙水平承载力,降低墙体损伤程度;随着边缘暗柱纵筋强度的提高,墙体的可恢复性能有所提升;为了保证边缘暗柱配置超高强纵筋高强再生混凝土中高剪力墙具有良好的可恢复性能,剪力墙轴压比宜控制在0....
Keyword :
弱粘结超高强钢筋 弱粘结超高强钢筋 高强再生混凝土 高强再生混凝土 有限元分析 有限元分析 抗震性能 抗震性能 中高剪力墙 中高剪力墙
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GB/T 7714 | 杨红 , 张嫚 , 张建伟 . 边缘配置超高强钢筋再生混凝土中高剪力墙抗震性能分析 [J]. | 建筑结构 , 2022 , 52 (S1) : 1415-1421 . |
MLA | 杨红 et al. "边缘配置超高强钢筋再生混凝土中高剪力墙抗震性能分析" . | 建筑结构 52 . S1 (2022) : 1415-1421 . |
APA | 杨红 , 张嫚 , 张建伟 . 边缘配置超高强钢筋再生混凝土中高剪力墙抗震性能分析 . | 建筑结构 , 2022 , 52 (S1) , 1415-1421 . |
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Abstract :
智能建造作为新一代融合信息技术和工程建设技术的新型工程建造模式,是未来保障建筑行业高质量发展的重要科技手段。培养适合未来智能建造发展的创新型复合人才,对于我国实现建筑业的转型升级和国家数字化经济的发展具有重大意义。本文介绍了智能建造专业的发展现状以及通专融合课程体系建设所面临的问题,并详细阐述了解决问题的基本思路,通过建设智能建造专业知识逻辑体系、对课程综合化设计及交融性研究、实施智能建造专业通专融合课程项目化应用、构建智能建造专业通专融合模块化课程体系及教材知识结构体系四个具体措施,期望为培养多学科交叉融合的复合型智能建造人才提供参考。
Keyword :
多维多元 多维多元 课程体系 课程体系 通专融合 通专融合 智能建造 智能建造
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GB/T 7714 | 刘占省 , 薛洁 , 杜修力 et al. 智能建造专业通专融合课程体系建设研究 [J]. | 高等工程教育研究 , 2022 , PageCount-页数: 6 (03) : 26-31 . |
MLA | 刘占省 et al. "智能建造专业通专融合课程体系建设研究" . | 高等工程教育研究 PageCount-页数: 6 . 03 (2022) : 26-31 . |
APA | 刘占省 , 薛洁 , 杜修力 , 张建伟 . 智能建造专业通专融合课程体系建设研究 . | 高等工程教育研究 , 2022 , PageCount-页数: 6 (03) , 26-31 . |
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Abstract :
In this paper, ultra-high-strength steel bars (UHSS) were innovatively applied to the high-strength recycled aggregate concrete (HSRAC) columns to achieve resilient structures cast from green building materials. Quasi -static tests were conducted to investigate the seismic performance and reparability of HSRAC columns with UHSS under the first-excursion failure mode, and to analyze and discuss the effect of cumulative damage on earthquake-damaged resilient columns repaired by carbon fiber-reinforced polymer (CFRP) composites jackets. The research showed that the damage state of HSRAC columns at 2% drift ratio was mild, and residual displacement satisfied the reparability limit. And the earthquake-damaged resilient columns possessed satis-factory seismic performance after rapid repaired by CFRP jackets. Based on the experiment results and obser-vations, a lateral load carrying capacity prediction model for HSRAC columns with UHSS under first and non-first seismic action was established, and fatigue damage energy was defined. In addition, damage model was intro-duced to assess the performance degradation of resilient column under first and non-first earthquake effects. The models were then verified by comparing prediction results with test results.
Keyword :
Seismic performance Seismic performance Ultra -high -strength steel bars Ultra -high -strength steel bars Resilient column Resilient column Damage assessment Damage assessment High -strength recycled aggregate concrete High -strength recycled aggregate concrete
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GB/T 7714 | Liu, Xiao , Zhang, Jianwei , Liu, Juan et al. Seismic performance and damage assessment of earthquake-damaged HSRAC columns with UHSS repaired by CFRP jackets [J]. | STRUCTURES , 2022 , 48 : 241-257 . |
MLA | Liu, Xiao et al. "Seismic performance and damage assessment of earthquake-damaged HSRAC columns with UHSS repaired by CFRP jackets" . | STRUCTURES 48 (2022) : 241-257 . |
APA | Liu, Xiao , Zhang, Jianwei , Liu, Juan , Zhang, Man , Cao, Wanlin . Seismic performance and damage assessment of earthquake-damaged HSRAC columns with UHSS repaired by CFRP jackets . | STRUCTURES , 2022 , 48 , 241-257 . |
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