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大跨度体外预应力钢梁施工技术研究

open access: yesJianzhu Gangjiegou Jinzhan
某会议中心观众厅的屋顶结构梁采用了双索实腹式预应力钢梁。借助有限元软件,对高空一次性张拉、地面一次性张拉以及分阶段张拉三种张拉施工方法进行了比较,同时针对张拉过程中可能存在的不同步张拉情况开展了敏感性分析。此外,还对预应力钢梁在施工阶段的全过程以及后期施工荷载作用下的应力和变形进行了分析,并与施工监测结果进行对比。结果表明:预应力张拉偏差在5%以内,对钢梁的应力、变形及稳定性影响均能够有效控制;有限元分析结果与监测数据吻合较好;在整个施工过程以及后期施工荷载的作用下,结构的各项技术指标均在规范要求范围内。
谢贻军   +5 more
doaj  

[Rehabilitation guidelines and specifications for traumatic spinal cord injury (2025 edition)]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Professional Committee Of Spine And Spinal Cord Injury Rehabilitation China Association Of Rehabilitation Of Disabled Persons   +3 more
europepmc   +1 more source

[Drug repositioning prediction based on dynamic feature learning on heterogeneous graphs]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao
Zhu H, Guo Y, Xin X, Li C, Zhou D.
europepmc   +1 more source

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