Jianzhu Gangjiegou Jinzhan, 2008 在开发利用地铁上空空间的活动中创造了中心受压穿心铰支座,又通过各种结构设计的综合研究,揭示了中心受压穿心铰支座更深层的优点和价值。梁、桁架类的受弯构件,应用中心受压穿心铰支座和柱子连接,就会产生没有弯矩传给柱子的效果,而且对柱子产生了三百六十度的约束,因此对大跨度、超大跨度、高层、超高层的开拓提供了一个行之有效的新思路。不仅如此,笔者在给工程公司展开咨询活动中,发现这种新型的钢结构节点对施工技术的开拓,建立自主知识产权等有很大的创新推动力,笔者诚恳地介绍给大家,希望大家有更多的创造。
陈云波
doaj
Gaoya dianqi, 2013 ±660 kV高压直流输电线路是世界上首条该电压等级的线路,大跨越段是耐雷性能比较薄弱的部分,因此有必要对其耐雷特性进行更加详细的研究。笔者利用改进的EGM,考虑雷电对导线、地线和大地三者击距的差异、风偏影响、地形影响和导线工作电压影响等,对中国±660 kV高压直流输电线路的大跨越段进行了绕击耐雷性能分析。仿真结果表明,随着地面倾角的增加,导线工作电压对绕击跳闸率的影响减小,但不容忽视,因此计算中必须考虑导线工作电压。随着风速和地面倾角的增大,绕击跳闸率呈加速度增长。当地面倾角大于20°,风速大于20
袁海燕 +3 more
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Jianzhu Gangjiegou Jinzhan, 2018 大跨度空间结构具有杆件众多、高次超静定、温度效应复杂等特点,为研究日照下空间结构的温度效应大小,设计制作了等边三角形平板网架模型进行温度试验。以实测数据为依据,研究网架模型温度与应力的关系以及温度变化所产生的温度应力、变形大小。结果表明,日照下网架模型温度与温度应力相关性明显,网架下弦温度应力最大,最大轴向应力可达64.2MPa,最大弯曲应力可达15.85MPa;上弦温度应力最小,最大轴向应力只有18.8MPa;网架下弦靠近支座节点变形最大,最大值可达0.5mm ...
李景芳 +4 more
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[A time-frequency transform and Riemannian manifold-based domain adaptation method for motor imagery in brain source space]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiQi Q, Li M.
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[Parent-child relationship and preschoolers' social skills: the cross-time chain mediating role of executive function and emotion regulation]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiLi YW +6 more
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[Shape-aware cross-modal domain adaptive segmentation model]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLiu Y +5 more
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[Diffusion cycle-consistent generative adversarial networks for pelvic active bone marrow segmentation]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoZhuo L +5 more
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[Research progress on quantitative magnetic susceptibility imaging reconstruction method based on improved U-network model]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiYang W, Zhang R, Keung S.
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[Adaptive lesion-aware fusion network for joint grading of multiple fundus diseases]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiZeng W, Guo S.
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[Image classification of osteoarthritis based on improved shifted windows transformer and graph convolutional networks]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiJiang L, Cao H, Ma Z.
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