Results 21 to 30 of about 21,761 (132)
矩形钢管混凝土柱-H形钢梁下栓上焊隔板贯通节点抗震性能试验研究
Jianzhu Gangjiegou Jinzhan, 2020 为研究新型矩形钢管混凝土柱-H形钢梁下栓上焊隔板贯通节点的抗震性能,设计了槽孔型、圆孔型和焊接型下栓上焊隔板贯通节点足尺试件,通过进行低周往复加载试验,考察不同的腹板连接构造形式对下栓上焊隔板贯通节点抗震性能的影响,并针对各试件的破坏特征和承载力、刚度、延性及耗能能力等抗震性能指标进行了试验数据的分析。最后运用力学分析的方法对节点的抗弯能力进行了理论研究,并与试验结果进行了比较。结果表明,不同的腹板连接构造对节点的抗震承载力影响不大,但对节点的延性、刚度和耗能能力有较大影响 ...
陈志华 +4 more
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The Effects of Gen‐AI on Situated and Future‐Driven Academic Writing Motivation
International Journal of Applied Linguistics, EarlyView.ABSTRACT Despite the increasing use of Generative Artificial Intelligence (Gen‐AI) in education, there is still a significant gap in understanding its effects on the situated‐ and future‐driven motivation in academic writing. This longitudinal design‐based research sought to explore variations in academic writing motivation of 110 Chinese university ...
Xiao Hu +3 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2023 为研究L形包角环口板加强方钢管T形节点（LCPT）轴向滞回性能，对一组包角环口板加强T形节点进行轴向往复加载试验，并与未加强（URT）和覆板加强节点（DPT）进行对比。结果表明：包角环口板加强节点的轴向滞回性能较优，LCPT试件比URT试件的最大荷载可提高103.2%；LCPT试件比DPT试件的累积耗能能力更好，且LCPT试件比DPT试件的拉压对等性更好。进一步对包角环口板尺寸和屈服强度进行有限元参数分析，结果表明：包角环口板厚度是影响LCPT节点轴向滞回性能的关键几何参数 ...
常鸿飞 +5 more
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Co‐Teaching in a Virtual Intensive Study Language Programme: Insights From Team Ethnography
International Journal of Applied Linguistics, EarlyView.ABSTRACT As virtual study abroad becomes an increasingly important form of international education, little is known about how transnational teaching is organised and sustained across institutions. Using activity theory as an analytical framework and team ethnography as methodology, this study examines a virtual intensive study (VIS) programme delivered
Zhu Hua +7 more
wiley +1 more source
Questa è una mini opera filosofico-scientifica che unisce riflessione e descrizione per esplorare l’origine, l’evoluzione e il destino dell’universo. Nasce dal desiderio di coniugare la profondità lirica della filosofia con la concretezza descrittiva della fisica, proponendo una nuova visione: l’universo non come frutto di perfezione, ma come ...
openaire +3 more sources
Jianzhu Gangjiegou Jinzhan, 2021 为了研究端板型冷弯薄壁钢管混凝土框架连接节点的滞回性能,进行了4个节点试件的低周反复加载试验,研究了不同端板类型和钢管厚度下,连接节点试件的破坏形式、弯矩-转角关系、骨架曲线、节点刚性评价、耗能能力以及典型部位的应变分布。试验结果表明:外伸端板连接节点和钢管厚度为3 mm的平齐端板连接节点具有较高的强度、刚度和较好的抗弯性能、抗震性能及延性;钢管厚度为1.5 mm的平齐端板连接节点的滞回曲线呈捏缩状,耗能性能稍弱;在采取可靠的构造措施后,此类节点能用于实际工程。
陈馨怡, 王静峰, 郭水平
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The regeneration of osteoporotic bone defects is severely hampered by compromised endogenous healing capacity, demanding advanced strategies that actively orchestrate pro‐osteogenic microenvironments. Here, we report an integrated, self‐powered osteo‐regenerative system that uniquely leverages a dual ultrasound‐responsive piezoelectric ...
Bing Tan +6 more
wiley +1 more source
钢网格盒式结构空腹楼板与柱相交组合节点及纯钢节点的抗震性能试验研究
Jianzhu Gangjiegou Jinzhan, 2018 为研究钢网格盒式结构空腹楼板与柱相交节点的抗震性能及空腹楼板上覆现浇钢筋混凝土层对节点抗震性能的影响,开展了2个边柱组合节点、2个边柱纯钢节点的低周反复加载试验。分析比较了节点的破坏模式、滞回曲线和耗能能力。试验结果表明:钢网格盒式结构的纯钢节点和组合节点滞回曲线比较饱满、稳定,具有良好的延性和耗能能力,盒式结构节点抗震性能良好。相对于纯钢节点而言,组合节点由于混凝土层的抗压和钢筋的抗拉作用,其承载力、刚度和耗能性能均有一定程度的提高,在对节点承载力和抗震性能的分析中 ...
孔丹丹 +4 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The design and synthesis of highly efficient electrochemical sensors are pivotal to electrochemical conversion technologies. This study successfully synthesized a composite material comprising two‐dimensional (2D) conductive MXene and nickel‐based metal–organic framework (Ni‐MOF) by stirring at room temperature.
Hai‐Xia Wu +8 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2016 梁柱节点需要较大的塑性转动能力,以避免节点脆性破坏并保证结构整体性,在节点安装转动型阻尼器或直接通过节点安装耗能元件形成转动耗能节点可以实现这一目标。综述了现有的转动型阻尼器以及转动型耗能节点,常见的转动型耗能阻尼器可分为摩擦型、金属型和复合型;常见的转动型耗能节点可分为摩擦型、金属型,以及自复位功能耗能节点。归纳了不同类型转动型阻尼器以及转动型耗能节点的构造形式;对比了复合型阻尼器、摩擦型和金属型阻尼器及耗能节点以及自复位耗能节点的试验曲线及耗能特点,归纳出了矩形、梭形、平行四边形、弓形 ...
孙飞飞, 侯玉芳, 李承铭
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