Results 191 to 200 of about 8,126 (231)

电力火灾后圆端形不锈钢管混凝土柱轴压性能研究

open access: yesJianzhu Gangjiegou Jinzhan
进行了14根电力火灾后圆端形不锈钢管混凝土短柱的轴压试验,分析截面高宽比、受火时间和含钢率对其火灾后剩余承载力的影响。试验表明:该类短柱的破坏模态均为局部屈曲、焊缝开裂和混凝土被压碎;试件的剩余承载力随着受火时间或高宽比的增加而降低,受火120 min后该类试件的承载力降低了7.8%~13.9%。接着建立了有限元模型,该模型可很好地模拟实测结果。基于有限元模型开展了理论分析,结果表明初始荷载对该类组合柱的剩余承载力影响较小。参数分析表明当混凝土强度从30 MPa增加到90 MPa时 ...
高献   +4 more
doaj  

平流层放大火灾的全球气候影响 [PDF]

open access: bronze, 2019
科 魏   +3 more
openalex   +1 more source

电力火灾后圆端形不锈钢管混凝土柱的轴压性能研究

open access: yesJianzhu Gangjiegou Jinzhan
进行了14根电力火灾后圆端形不锈钢管混凝土短柱的轴压试验,分析截面高宽比、受火时间和含钢率对其火灾后剩余承载力的影响。试验表明:该类短柱的破坏模态均为局部屈曲、焊缝开裂和混凝土压碎;试件的剩余承载力随着受火时间或高宽比的增大而降低,受火120 min后该类试件的承载力降低了7.8%~13.9%。接着建立了有限元模型,该模型可很好地模拟实测结果。基于有限元模型开展了理论分析,分析表明初始荷载对该类组合柱的剩余承载力影响较小。参数分析表明当混凝土强度从30 MPa增加到90 MPa时 ...
高献   +4 more
doaj  

[Multicenter retrospect analysis of early clinical features and analysis of risk factors on prognosis of elderly patients with severe burns]. [PDF]

open access: yesZhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Ma QM   +25 more
europepmc   +1 more source

Design and development of a Wechat applet for intelligent health management of metabolic syndrome. [PDF]

open access: yesZhejiang Da Xue Xue Bao Yi Xue Ban, 2022
Tang L   +5 more
europepmc   +1 more source

[Disaster response plans in the neonatal intensive care unit]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi, 2017
Shi Y.
europepmc   +1 more source

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