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建筑结构学报 2016年第12期37卷 120-125页

作者：徐天航郭子雄柴振岭叶勇王兰侯炜刘阳华侨大学土木工程学院福建厦门361021 福建省结构工程与防灾重点实验室福建厦门361021

为提高条石干砌石墙的抗震性能,采用钢筋网片改性砂浆对其进行加固。对4片不同加固参数的条石墙体进行低周水平往复加载试验,重点研究改性水泥砂浆强度、钢筋强度及加固方式(单面加固和双面加固)对加固石砌墙体的破坏形态、承载能力、... 详细信息

为提高条石干砌石墙的抗震性能,采用钢筋网片改性砂浆对其进行加固。对4片不同加固参数的条石墙体进行低周水平往复加载试验,重点研究改性水泥砂浆强度、钢筋强度及加固方式(单面加固和双面加固)对加固石砌墙体的破坏形态、承载能力、滞回曲线、骨架曲线、耗能能力等抗震性能的影响。试验结果表明:采用钢筋网片砂浆面层对墙体进行加固,能够有效提高条石墙体的受剪承载力和滞回耗能能力;采用双面加固或提高改性砂浆强度可进一步提高墙体受剪承载力;墙体采用双面加固的承载力提高幅度是单面加固墙体的3倍以上。基于研究结果提出了采用钢筋网片改性砂浆加固条石干砌石墙受剪承载力的计算公式,可供后续研究和工程实践参考。

关键词：条石干砌石墙加固钢筋网片改性砂浆拟静力试验抗震性能

混杂纤维粉煤灰轻骨料混凝土力学与耐久性能试验研究

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化学与粘合 2023年第2期45卷 101-104,123页

作者：孙培华许天航陕西工业职业技术学院陕西咸阳712000

轻骨料混凝土可以有效降低混凝土的密度,添加混杂纤维后会进一步提升混凝土的力学与耐久性能,混杂纤维粉煤灰轻骨料混凝土在高耸建筑物和重载结构中得到了广泛的应用。制备了不同混杂纤维掺加率的粉煤灰轻骨料混凝土试件,测试了其立方... 详细信息

轻骨料混凝土可以有效降低混凝土的密度,添加混杂纤维后会进一步提升混凝土的力学与耐久性能,混杂纤维粉煤灰轻骨料混凝土在高耸建筑物和重载结构中得到了广泛的应用。制备了不同混杂纤维掺加率的粉煤灰轻骨料混凝土试件,测试了其立方体抗压强度、劈裂抗拉强度和抗氯离子腐蚀能力,找出了力学性能和抗氯离子腐蚀能力最佳的混杂纤维总体积掺加率,并在确定总体积掺加率的基础上进一步找出抗冻性能提升最大的聚丙烯和纤维素纤维体积掺加率。研究表明:(1)当聚丙烯和纤维素纤维总体积掺加率约为0.15%时,粉煤灰轻骨料混凝土的力学性能最佳;(2)混杂纤维总体积掺加率为0.15%~0.18%时,混凝土抗氯离子腐蚀能力的改善效果最好;(3)聚丙烯纤维和纤维素纤维的体积掺加率分别为0.06%和0.09%时,混凝土抗冻性能提升最大。

关键词：混杂纤维粉煤灰轻骨料混凝土力学特性耐久性能

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日本信玄堤周边水制的造床功能及设置方法

水利规划与设计 2020年第12期 83-86页

作者：许天航石井信行陕西工业职业技术学院土木工程学院陕西咸阳712000 山梨大学工学部日本甲府400-0856

信玄堤一带是日本河流治理的典范,也是居民休闲活动的舒适场所。以信玄堤一带的水制为中心,实地调研河流特性、水制的设置、泥沙沉积,洪水时期的流量、水位及微地形的变化;考察居民的水边活动的情况和实态,基于水制的景观潜质及人间活... 详细信息

信玄堤一带是日本河流治理的典范,也是居民休闲活动的舒适场所。以信玄堤一带的水制为中心,实地调研河流特性、水制的设置、泥沙沉积,洪水时期的流量、水位及微地形的变化;考察居民的水边活动的情况和实态,基于水制的景观潜质及人间活动两方面要素,验证了水制的造床功能,提出了河流治理过程中水制的配置方法,为近自然河流的治理及景观规划提供参考。

关键词：水制调查洪水设置

用思想政治的亮光点燃“设计构成基础”教学的海洋

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科教导刊 2021年第34期 116-118页

作者：许天航侯经文王强陕西工业职业技术学院土木工程学院陕西咸阳712000

以"知识、能力、人格"三位一体为教学目标,通过课程思政的创新教学模式,构建全课程育人格局,使专业课与思想政治理论课同向同行。在"设计构成基础"课程思政教学中,以教学案例为切入点,充分挖掘课程的思政教育资源,重新梳理教学资料,采... 详细信息

以"知识、能力、人格"三位一体为教学目标,通过课程思政的创新教学模式,构建全课程育人格局,使专业课与思想政治理论课同向同行。在"设计构成基础"课程思政教学中,以教学案例为切入点,充分挖掘课程的思政教育资源,重新梳理教学资料,采用多种教学方法,实施课程思政教育的实践,使学生在获得专业知识的同时,也接受了理想信念和价值观教育,实现了课堂思政教学改革的目标。结合教改实施过程,提出了课程思政教学的几点建议。

关键词：设计类专业课程思政设计构成教学案例建议

A new skeleton based flying bird detection method for low-altitude air traffic management

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Chinese Journal of Aeronautics 2018年第11期31卷 2149-2164页

作者： tianhang WU Xiaoyan LUO Qunyu xu School of Electronic and Information Engineering Beihang University Image Processing Center School of AstronauticsBeihang University Department of Civil and Environmental Engineering University of Illinois

In low-altitude air traffic management, non-cooperation targets are the greatest threat to security of low-flying aircraft. Among various aviation fatalities, flying bird is the main factor with the highest risk and directs economic losses amounted to nearly 10 billion US dollars each ***, Flying Bird Detection(FBD) has attracted considerable attention in low-altitude air traffic management. In this paper, we propose a skeleton based FBD method via describing bird motion information with a set of key poses. To overcome the variability of birds, the skeleton feature is selected as a relatively fixed and common characteristic for the pose appearance of flying bird. Based on the geometric topology among some key parts of bird body, a set of key poses can be described by some extracted skeleton features, which are used to represent the bird motion information. Aimed at robustly handling with the pose variations, multiple pose-specific classifiers are individually trained to learn the representative poses of the flying bird. At the detection stage,the flying bird skeleton features are combined with extracted key-pose sets to perform the flying bird classification task from each image. Afterwards, the key-frame pose-change set and the consistency of the classification results from sequent images are employed to validate the final detection *** on flying bird datasets demonstrate the effectiveness and efficiency of the proposed method.

关键词： Bird-aircraft collisions Flight security Flying bird detection Low-Altitude Air Traffic Management(LAATM) Simplified skeleton descriptor

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基于有限元的汽车扭臂热锻工艺研究

南方农机 2021年第7期52卷 42-43页

作者：张英杰杨佳明许天航宿迁学院机电工程学院江苏宿迁223800

文章以汽车扭杆力臂为研究对象,通过DEFORM-3D有限元分析对汽车扭杆力臂热锻工艺过程进行模拟试验,分析了成形过程中的上模载荷情况、应力应变场分布情况和温度场的变化规律。以提高产品质量和降低载荷为主要目的,给出合理的热加工参数... 详细信息

文章以汽车扭杆力臂为研究对象,通过DEFORM-3D有限元分析对汽车扭杆力臂热锻工艺过程进行模拟试验,分析了成形过程中的上模载荷情况、应力应变场分布情况和温度场的变化规律。以提高产品质量和降低载荷为主要目的,给出合理的热加工参数,分析结果能为类似锻件的热模锻工艺和模具设计提供依据。

关键词：热模锻工艺汽车扭杆力臂有限元仿真

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课程思政在土木工程材料教学中的融入

中国教育技术装备 2023年第6期 108-111页

作者：安亚强陈婷郭岩鞠森森许天航陕西工业职业技术学院陕西咸阳712000 咸阳职业技术学院陕西咸阳712000

土木工程材料是土建类专业的一门专业基础课程,石灰部分的内容在无机非金属材料中有着贯穿始终的指导作用。授课结合明代诗人于谦的《石灰吟》介绍石灰的来源、特性及品质,根据火神山医院建设中用到的石灰制材料,凝练教学内容中蕴含的... 详细信息

土木工程材料是土建类专业的一门专业基础课程,石灰部分的内容在无机非金属材料中有着贯穿始终的指导作用。授课结合明代诗人于谦的《石灰吟》介绍石灰的来源、特性及品质,根据火神山医院建设中用到的石灰制材料,凝练教学内容中蕴含的育人元素和思政资源,对如何传道育人进行分析和探讨,让知识传授和思政目标较好融合。

关键词：土木工程材料石灰课程思政思政教育

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Fabrication of highly effective electrodes for iron chromium redox flow battery

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Nano Research 2024年第5期17卷 3988-3996页

作者： Yingchun Niu Chao Guo Yinping Liu Guangfu Wu tianhang Zhou Fangang Qu Ziji Yang Ali Heydari Chunming xu Quan xu State Key Laboratory of Heavy Oil Processing China University of Petroleum(Beijing)Beijing 102249China

Iron-chromium redox flow batteries(ICRFBs)have emerged as promising energy storage devices due to their safety,environmental protection,and reliable *** carbon cloth(CC),often used in ICRFBs as the electrode,provides a suitable platform for electrochemical processes owing to its high surface area and interconnected porous ***,the CC electrodes have issues,such as,insufficient electron transfer performance,which limits their industrial ***,we employed silicic acid etching to carve dense nano-porous structures on the surface of CC electrodes based on the favorable design of ICRFBs and the fundamental principles of electrode polarization *** a result,we developed a multifunctional carbon cloth electrode with abundant vacancies,notably enhancing the performance of the *** fabricated electrode showcased a wealth of defect sites and superior electronic transport properties,offering an extensive and effective reaction area for rapidly flowing *** an electrode compression ratio of 40%and the highest current density in ICRFBs so far(140 mA·cm^(-2)),the battery achieved the average energy efficiency of 81.3%,11.24%enhancement over the previously published ***,throughout 100 charge-discharge cycles,the average energy efficiency degradation was negligible(~0.04%),which has the potential to become the most promising candidate for large-scale and long-term electrochemical energy storage applications.

关键词： iron chromium redox flow battery electron carbon cloth defect site density functional theory(DFT)calculation

Synergistic effect of electrode defect regulation and Bi catalyst deposition on the performance of iron–chromium redox flow battery

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Chinese Chemical Letters 2023年第10期34卷 281-286页

作者： Quan xu Siyang Wang Chunming xu Xinyi Chen Senwei Zeng Chuanyuan Li Yang Zhou tianhang Zhou Yingchun Niu State Key Laboratory of Heavy Oil Processing China University of Petroleum-BeijingBeijing 102249China

Iron-chromium redox flow batteries (ICRFBs) possess advantages of high safety,long cycle time,and *** Cr^(3+)/Cr^(2+)reaction activity is suggested as one of the most promising strategies to improve the performance and prolong the lifetime of *** improve the slow reaction kinetics of the negative electrode,a type of defected carbon cloth with Bismuth (Bi) catalyst introduction is prepared by defect engineering method and electrochemical deposition,which provided defect sites and active sites to catalyze the redox couple’s reaction of ***,this modified carbon cloth adsorbs Cr(Ⅲ)hydrate more easily,which has a more stable structure and can significantly improve the performance of *** experimental analysis and theoretical calculation indicated that the modified electrode has excellent electrocatalytic ability,which can enhance the reaction rate of Cr^(3+)/Cr^(2+),improve capacity retention and stabilize cycling *** capacity degradation rate of an ICRFB single cell with the modified electrodes is just 0.23%per cycle at a current density of 140 m A/cm^(2).Additionally,the energy efficiency (EE) remains around 83%,which is 8.45%higher than that of the pristine electrode assembled battery under 60 *** work supplies a simple method to obtain a high-performance electrode material for ICRFBs and makes it a practical solution to promote ICFRBs large-scale commercialization process.

关键词： Bismuth Iron-chromium redox flow batteries (ICRFBs) Carbon cloth Electrode catalyst Defect engineering