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钢管混凝土叠合柱-H形钢梁外套筒式连接节点抗震性能试验与有限元研究
以钢管混凝土叠合柱为研究对象，设计了一种高强对穿螺栓连接的外套筒式梁柱节点。为了研究该新型节点的抗震性能和破坏机理，进行了3个缩尺比为1：2的节点拟静力试验。观察节点损伤过程及破坏模式，分析梁端荷载-位移滞回曲线、骨架曲线、节点延性及耗能能力，采用ABAQUS软件建立有限元模型，研究套筒宽厚比和加强肋板厚度对节点抗震性能影响。试验及有限元研究结果表明：节点滞回曲线饱满，延性系数介于3.13~4.19之间，等效粘滞阻力系数介于0.211~0.296之间，节点域的变形和耗能能力较强；随着套筒厚度增加 ...
张新华, 李晨帆, 杨锋
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[Research progress on ionic liquid-functionalized magnetic Fe<sub>3</sub>O<sub>4</sub> nanomaterials in sample pretreatment- chromatographic analysis]. [PDF]
Se PuLi JX +6 more
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[Traditional Chinese medicine for regulating glycolysis to remodel the tumor immune microenvironment: research progress and future prospects]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoHe S +8 more
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[The design and application of a genu valgum gait recognition model based on triple attention mechanism and spatial hierarchical pooling strategy]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiSong X, Qian K, Hou X, Wang Y.
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为促进建筑工业化和住宅产业化，提高框架-支撑结构体系的抗震性能，提出了部分包覆钢-混凝土组合（partially encased composite brace， PEC）支撑。对3个采用PEC支撑的PEC框架试件和1个采用钢支撑的PEC框架试件进行了低周往复加载试验，研究了各试件的破坏模式、初始刚度、极限承载力、耗能能力等指标。结果表明：PEC框架与PEC支撑之间协同工作性能良好；PEC支撑试件相比纯钢支撑具有优势，初始刚度提升约24%~41%、极限承载力提升约29%~36%，耗能能力提升约7%~17%
庄项平 +6 more
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[Prospects and technical challenges of non-invasive brain-computer interfaces in manned space missions]. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanJu Y +8 more
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