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The Effect of Steel Corrosion on Bond Strength in Concrete Structures 被引量:4
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作者 FANG Cong-qi(方从启) +1 位作者 kou Xin-jian(寇新建) 《Journal of Shanghai Jiaotong university(Science)》 EI 2005年第4期436-440,共5页
The effect of steel corrosion on the behavior of bond between steel and the surrounding concrete was investigated. Pullout tests were carried out to demonstrate bond stress-slip response for reinforcing steel bars of ... The effect of steel corrosion on the behavior of bond between steel and the surrounding concrete was investigated. Pullout tests were carried out to demonstrate bond stress-slip response for reinforcing steel bars of a series of corrosion level. Specimens either confined or unconfined were investigated for evaluation of the effect of confinement on bond strength and failure mode. Also, the tests were analyzed using nonlinear finite element analysis. It was shown that for both confined and unconfined steel bars, bond strength generally decreases as the corrosion level increases when corrosion level is relatively high. Confinement was demonstrated to provide excellent means to conteract bond loss for corroded reinforcing steel bars. It was shown that unconfined specimens generally split at a small slip with a large crack width and result in splitting failure while confined specimens contribute to a small crack width and generally cause a pullout failure. The analysis results agree reasonably well with the experiments. 展开更多
关键词 bond strength CONCRETE CORROSION finite element analysis
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新时代医学生红色文化教育的意义及实践路径研究 被引量:2
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作者 寇丹阳 《中国医学伦理学》 2021年第11期1428-1431,共4页
红色文化是中国特色社会主义文化的重要组成部分,是对医学生进行思想道德教育的宝贵资源。对医学生的红色文化教育,有利于传承红色基因、增强文化自信、回应时代挑战、维护主流意识形态安全、助力健康中国战略,是培养高质量医学人才的... 红色文化是中国特色社会主义文化的重要组成部分,是对医学生进行思想道德教育的宝贵资源。对医学生的红色文化教育,有利于传承红色基因、增强文化自信、回应时代挑战、维护主流意识形态安全、助力健康中国战略,是培养高质量医学人才的重要内容。高校要以提高医学生的综合素质为目标,提高对红色文化教育重要性的认识,紧密结合学校实际,形成开展红色文化教育的体制和机制,追求红色文化教育的实效性,积极探索红色文化教育的实践路径。 展开更多
关键词 红色文化 医学生 新时代 医学生教育
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STABILITY CRITERIA IN TERMS OF TWO MEASURES FOR DELAY DIFFERENTIAL EQUATIONS
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作者 kou Chun-hai(寇春海) +1 位作者 ZHANG Shu-nian(张书年) 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2002年第3期311-320,共10页
By using the variational Liapunov method, stability properties in terms of two measures for delay differential equations are discussed. In the case that the unperturbed systems are ordinary differential systems, emplo... By using the variational Liapunov method, stability properties in terms of two measures for delay differential equations are discussed. In the case that the unperturbed systems are ordinary differential systems, employing auxiliary measure h*(t, x), criteria on nonuniform and uniform stability in terms of two measures for delay differential equations are established. 展开更多
关键词 delay differential equations variational Liapunov method STABILITY two measures
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