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螺纹孔单边螺栓T形连接节点受拉性能研究（Ⅱ）——承载力设计方法
Jianzhu Gangjiegou Jinzhan, 2020 欧洲规范给出了螺栓连接T形节点的3种受拉破坏模式,考虑到螺纹破坏,又划分了2种新的破坏模式:螺纹破坏和T形翼缘屈服伴随螺纹破坏,并给出了相应的抗拉承载力计算公式。将公式计算结果与单边螺栓T形连接节点受拉性能试验结果进行比较,验证了提出的新的破坏模式以及计算公式的正确性。公式计算结果均小于试验结果,因此在由计算公式得到的设计荷载下,T形节点具有足够的安全储备。
高庆水 +7 more
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Jianzhu Gangjiegou Jinzhan, 2021 以圆钢管混凝土平面K形相贯节点试验数据为基础,以弦杆径厚比γ、腹杆与弦杆管径比β、壁厚比τ和夹角θ为研究参数,建立有限元参数分析模型,进行非线性有限元参数分析,得到该类型节点的典型破坏模式,并建立了节点的极限承载力计算模型。结果表明:圆钢管混凝土K形相贯节点典型破坏模式是腹杆失效和弦杆冲剪破坏,控制指标是腹杆与弦杆的壁厚比τ和夹角θ。在CIDECT建议的空心圆钢管相贯节点基于冲剪破坏的极限承载力计算公式基础上,采用最小二乘法得到圆钢管混凝土K形相贯节点的冲剪承载力计算模型 ...
高春彦, 王佳丽, 郭大伟
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Jianzhu Gangjiegou Jinzhan, 2023 为研究窄翼缘PEC中长柱轴压整体稳定性能，设计制作9根组合长细比介于76~141（正则化长细比介于0.84~1.55）的窄翼缘PEC中长柱，进行轴压整体稳定性能试验。研究窄翼缘PEC中长柱的初始弯曲、长细比、混凝土强度等因素对其破坏模式和轴压整体稳定承载力的影响。试验结果表明，窄翼缘PEC中长柱在轴压荷载下的破坏模式表现为绕弱轴的弯曲失稳，长细比和初始弯曲显著影响试件的破坏模式和极限承载力。当试件的正则化长细比大于1.0，初始弯曲大于L/1 000时，试件的破坏模式表现为整体极值点失稳 ...
张文轩 +5 more
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Study on water inrush failure mode of karst tunnel based on three-dimensional discrete-continuous coupling [PDF]
During the construction of karst tunnel, it is difficult to avoid approaching the cavern, even high pressure water cavern. Water inrush damage very easily causes safety accidents and would have irreversible impact on the tunnel.
Baohua DENG +5 more
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Experimental study on uniaxial compressive strength characteristics of conventional model ice in tank [PDF]
ObjectiveIn the ice-propeller milling or collision test, in order to accurately test the ice load of the propeller, it is very important to use model ice which satisfies similarity with the geometric and mechanical properties of real ice.MethodsUniaxial ...
Chao WANG, Longhui LI, Pei XU
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, 2008 Crack propagation is one of the key issues for simulating nonlinear behavior and evaluating safety of concrete structures. The equivalent crack opening displacement of smeared damage-fracture model is formulated with damage parameter and crack band width.
Long, Y, Zhang, C, Zhou, Y
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Application of ultra-high gravity retaining walls in high fill slopes on karst developed foundations [PDF]
This paper presents a high fill slope solution for the steep and karst-developed terrain at the southern end, west side of Wulong Airport in Chongqing, where a combination of high embankment and ultra-high counterweight retaining wall was adopted.
Biao YANG +6 more
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Politics &Policy, Volume 53, Issue 3, June 2025.ABSTRACT Deep fakes can be used for political advertising, enabling politicians to change their characteristic features or minimize deficits of their performances. Such a strategy may meet with great interest, which in some circumstances increases participation and might influence deliberation. It was applied in South Korea, and its variations appeared
Mateusz Łabuz, Grażyna Strnad
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2020 采用有限元方法对自攻螺钉搭接连接薄钢板在高温下的抗剪性能进行了研究。薄钢板厚度分别采用0.42mm,1.20mm,1.90mm;通过改变温度和自攻螺钉的布置方式,研究抗剪连接件的承载力和破坏模式。分析结果表明:自攻螺钉搭接连接薄钢板在剪力作用下,会发生明显的倾斜;自攻螺钉沿受力方向布置时的承载力略高于垂直受力方向布置时的承载力,两者破坏模式相似;节点在高温下的破坏模式与在常温下类似。将模拟结果与冷成型钢设计规范的预测结果进行比较,发现现行规范可以较准确地预测抗剪连接件的破坏模式,而对其承载力的预测 ...
张曼 +4 more
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Research on method of model selection in basement of high-rise building structure design [PDF]
, 2016 随着建设规模的不断扩大和土建技术的进步，现代高层建筑地下室的形式越来越多样化，工程环境条件更加的复杂，地下室结构设计时所需考虑的因素更多、所需处理的问题更复杂。地下室结构在整体结构中所占的比重越来越大，所需工期越来越长，使得地下室结构方案的选择对整体结构的影响也越来越重。地下室结构选型是地下室结构设计中的一个重要环节，具有涉及因素多，不确定性大，各因素间相互关联性大等特点。随着建筑工程信息化的发展，迫切需要一个准确性高、覆盖面广、操作便捷的地下室结构方案选型决策辅助工具，帮助结构设计师全面 ...
杨信
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