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Earthquake Engineering and Engineering Vibration 2016年第1期15卷 187-196页

作者： Wang Changfeng zhao jikang Zhu Long Bao Yijun School of Civil Engineering Yantai University School of Civil Engineering Lanzhou Jiaotong University

A finite element model is constructed for a sliding friction bearing in a seismically isolated bridge under vertical excitation with contact/friction elements. The effects of vertical excitation on the seismic performance of a seismically isolated bridge with sliding friction bearings and different bearing friction coefficients and different stiffness levels （pier diameter） are discussed using example calculations, and the effects of excitation direction for vertical excitation on the analysis results are explored. The analysis results shows that vertical excitation has a relatively large impact on seismic performance for a seismically isolated bridge with sliding friction bearings, which should be considered when designing a seismically isolated bridge with sliding friction bearings where vertical excitation dominates.

关键词： vertical excitation seismically isolated bridge sliding friction bearing seismic analysis

Cu/Mo2C synthesized through Anderson-type polyoxometalates modulate interfacial water structure to achieve hydrogen evolution at high current density

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Nano Research 2024年第4期17卷 2546-2554页

作者： Dunyuan Jin Fen Qiao Yan Zhou Junfeng Wang Kecheng Cao Jing Yang jikang zhao Lei Zhou Haitao Li School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013China School of Physical Science and Technology and Shanghai Key Laboratory of High-resolution Electron Microscopy ShanghaiTech UniversityShanghai 201210China Institute for Energy Research Jiangsu UniversityZhenjiang 212013China

The development of efficient non-precious metal catalysts is important for the large-scale application of alkaline hydrogen evolution reaction(HER).Here,we synthesized a composite catalyst of Cu and Mo_(2)C(Cu/Mo_(2)C)using Anderson-type polyoxometalates(POMs)synthesized by the facile soaking method as *** electronic interaction between Cu and Mo_(2)C drives the positive charge of Cu,alleviating the strong adsorption of hydrogen at the Mo site by modulating the d-band center of Mo_(2)*** studying the interfacial water structure using in situ attenuated total reflection surface-enhanced infrared absorption spectroscopy(ATR-SEIRAS),we determined that the positively charged Cu crystals have the function of activating water molecules and optimizing the interfacial water *** interfacial water of Cu/Mo_(2)C contains a large amount of free water,which could facilitate the transport of reaction *** to activated water molecules and optimized interfacial water structure and hydrogen adsorption energy,the overpotential of Cu/Mo_(2)C is 24 mV at a current density of 10 mA·cm^(-2) and 178 mV at a current density of 1000 mA·cm^(-2).This work improves catalyst performance in terms of interfacial water structure optimization and deepens the understanding of water-mediated catalysis.

关键词： electrocatalytic hydrogen production interfacial water charge transport d band center in situ attenuated total reflection surface-enhanced infrared absorption spectroscopy(ATR-SEIRAS)

Microstructure evolution of ATI718 plus alloy during high-speed machining:Experiments and a combined FE-CA approach

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Chinese Journal of Aeronautics 2024年第12期37卷 498-521页

作者： Xuhang GAO Changfeng YAO Liang TAN Minchao CUI Wenhao TANG Guangyuan SHI jikang zhao Jianxin LUO Ya ZHANG The Key Laboratory of High Performance Manufacturing for Aero Engine Ministry of Industry and Information TechnologyNorthwestern Polytechnical UniversityXi’an 710072China Engineering Research Center of Advanced Manufacturing Technology for Aero Engine Ministry of EducationNorthwestern Polytechnical UniversityXi’an 710072China

Excellent surface integrity is an eternal pursuit in high performance manufacturing,with microstructure being a crucial component of the surface integrity dataset and a key factor controlling surface properties such as fatigue and *** multi-physical fields generated by thermomechanical loads during high-speed machining act on the processed surface layer,influencing the evolution of *** investigate the microstructural evolution mechanisms of ATI718 plus during high-speed machining,cutting experiments and techniques such as Electron back scatter diffraction(EBSD),Transmission Kikuchi diffraction(TKD),and Precession electron diffraction(PED)is conducted to quantitatively analyze the microstructures in the chip shear zone and the machined ***,a combined finite element(FE)and cellular automata(CA)model is developed to simulate the microstructure evolution during the cutting *** discontinuous dynamic recrystallization(DDRX)mechanism is employed to demonstrate the nucleation and growth of grains under the influence of multiple physical *** simulation and experimental results show similar dynamic recrystallization(DRX)grain sizes,indicating acceptable accuracy of the CA model in terms of DRX grain *** comparison between experimental and simulation results confirms the occurrence of both continuous dynamic recrystallization(CDRX)and DDRX during the cutting *** synergistic competition between CDRX induced grain lamellar refinement and DDRX induced grain growth emerge as the primary mechanism driving microstructural evolution.A layer of ultrafine grains,with a thickness within 20 lm,is formed on the machined *** under different parameters demonstrate that the temperature has a more significant impact on the thickness of the ultrafine grain layer and the diameter of grains within the layer compared to the strain rate.

关键词： Surface integrity Dynamic recrystallization Microstructure evolution Finite element Cellular automata High-speed machining

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变极理论在大型循环泵电机节能改造中的运用

西北电力技术 2004年第4期32卷 147-148页

作者：赵继康韩城发电厂陕西韩城715415

介绍了利用变极理论,实现大型电动机节能的原理和在实际改造后取得的节能成果。并对循环泵电机利用此原理进行改造后,将取得的节能效果进行了预测。

关键词：大型电动机变极理论节能技术改造循环泵电机

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建筑工程开工前参建各方的准备工作

山西建筑 2017年第15期43卷 238-239页

作者：赵继康国投晋城能源有限公司山西晋城048026

论述了建筑工程开工前各参建单位应开展的准备工作,分析了各参建单位在工作中的相互关系,旨在使各单位有序、有效地开展工作,进而确保工程建设的质量、进度、安全及效益。

关键词：建筑工程建设单位工程管理经济效益

TiCN_(p)增强高铬铸铁复合材料的制备与性能

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材料导报 2023年第13期37卷 191-195页

作者：赵吉康肖平安顾景洪钟斯远湖南大学材料科学与工程学院长沙410082

本工作以TiCN_(p)和20Cr高铬铸铁粉末为原料,采用压制和超固相液相烧结(SLPS)工艺,制备含10%~30%(质量分数,下同)TiCN_(p)的高铬铸铁复合材料,系统研究了增强相含量和烧结温度对复合材料致密化行为、显微组织、物相组成和力学性能的影... 详细信息

本工作以TiCN_(p)和20Cr高铬铸铁粉末为原料,采用压制和超固相液相烧结(SLPS)工艺,制备含10%~30%(质量分数,下同)TiCN_(p)的高铬铸铁复合材料,系统研究了增强相含量和烧结温度对复合材料致密化行为、显微组织、物相组成和力学性能的影响规律。研究结果表明,通过真空液相烧结可以制备出相对致密度均达到97.5%以上的各成分复合材料,物相主要由TiCN、Cr_(7)C_(3)碳化物、马氏体和少量奥氏体组成;随着增强相添加量逐步增加,TiCN_(p)沿晶界分布,逐渐形成网状分布结构,而Cr_(7)C_(3)越来越多地在烧结过程中没有熔化的合金基体中析出和粗化;这使得复合材料的硬度线性上升,而抗弯强度和冲击韧性则降低。当TiCN_(p)添加量为30%时复合材料的力学性能可以达到硬度87.8HRA,抗弯强度1304 MPa,冲击韧性2.35 J/cm^(2)。

关键词：复合材料 TiCN_(p) PM高铬铸铁力学性能显微组织

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燃煤机组烟囱出口烟气带水问题分析

科技创新导报 2020年第20期17卷 31-33页

作者：赵继康福建大唐国际宁德发电有限责任公司福建宁德352000

目前燃煤电厂普遍取消了GGH,吸收塔出口的烟温在50℃左右。通常情况下,超低排放改造通过高效除雾器保证雾滴不超过20mg/Nm3,但由于烟囱在整个系统的尾端,在保证除雾器的有效性外,还需保证烟囱的设计也在合理的烟气流速范围内,否则单一... 详细信息

目前燃煤电厂普遍取消了GGH,吸收塔出口的烟温在50℃左右。通常情况下,超低排放改造通过高效除雾器保证雾滴不超过20mg/Nm3,但由于烟囱在整个系统的尾端,在保证除雾器的有效性外,还需保证烟囱的设计也在合理的烟气流速范围内,否则单一通过除雾器改造,并不能保障避免烟囱雨的产生。烟囱飘雨现象与烟气状态、烟囱内烟气流速、大气环境等因素有关。本文剖析了某330MW燃煤机组烟囱飘雨的原因并给出了解决建议。

关键词：烟囱飘雨除雾器冷凝二次夹带

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建设单位如何实现安全文明施工精细化管理

山西建筑 2016年第31期42卷 237-238页

作者：赵继康国投晋城能源有限公司山西晋城048026

论述了煤矿项目建设中对安全生产实行一体化、精细化管理的必要性,并从施工总平面图、施工现场、临时设施搭设、场地材料堆放等方面,阐述了实施安全文明施工精细化管理的方法,有利于促进煤矿建设项目的顺利实施。

关键词：煤矿精细化管理安全生产施工现场

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公路隧道掌子面塌方事故处治措施研究

甘肃科技 2020年第3期36卷 94-95页

作者：赵继康甘肃省公路建设管理集团有限公司甘肃兰州730070

隧道在开挖掘进过程中,由于掌子面前方岩体地质变化情况的不确定性,致使在破碎软弱围岩开挖时极易发生掌子面塌方现象,本文通过阐述隧道掌子面塌方事故的原因分析,和处治步骤及方案,对一座公路V级软弱破碎围岩隧道的塌方进行有效的处治... 详细信息

隧道在开挖掘进过程中,由于掌子面前方岩体地质变化情况的不确定性,致使在破碎软弱围岩开挖时极易发生掌子面塌方现象,本文通过阐述隧道掌子面塌方事故的原因分析,和处治步骤及方案,对一座公路V级软弱破碎围岩隧道的塌方进行有效的处治,使塌方后的隧道围岩和支护结构趋于稳定,达到了预期处理效果。

关键词：隧道掌子面塌方处治

归脾汤治疗特发性血小板减少性紫癜59例临床分析

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中国疗养医学 2010年第9期19卷 827-828页

作者：赵继康西安户县余下中心卫生院

目的研究慢性型特发性血小板减少性紫癜的临床特征,观察归脾汤的临床疗效。方法分析59例慢性型特发性血小板减少性紫癜患者的临床资料,总结其临床特征,并全部用归脾汤加减治疗。结果慢性型特发性血小板减少性紫癜临床特征是起病隐袭,一... 详细信息

目的研究慢性型特发性血小板减少性紫癜的临床特征,观察归脾汤的临床疗效。方法分析59例慢性型特发性血小板减少性紫癜患者的临床资料,总结其临床特征,并全部用归脾汤加减治疗。结果慢性型特发性血小板减少性紫癜临床特征是起病隐袭,一般无前驱症状,多表现为皮肤黏膜瘀点、瘀斑及外伤后出血不止,鼻出血及牙龈出血等,多见于40岁以下青年女性。用归脾汤加减治疗,临床控制50例,显效6例,无效3例。结论慢性型特发性血小板减少性紫癜符合中医"血症"气血两虚型特点,治宜益气健脾,养血止血,归脾汤加减能有效治疗。

关键词：特发性血小板减少性紫癜慢性型血症归脾汤