Results 31 to 40 of about 1,605 (148)
Jianzhu Gangjiegou Jinzhan, 2011 为了研究实腹式钢骨混凝土异形柱在偏心荷载下的破坏机理、受力性能及变形能力。本文通过对12个十字形钢骨混凝土异形柱进行偏心受压承载力的试验研究,观察了含钢率和偏心距不同情况下的试件受力过程和破坏形态,分析了钢骨混凝土异形柱的荷载-位移曲线、承载力、位移延性等力学性能。通过试验,明确了钢骨混凝土异形柱的破坏特征,含钢率对承载力的影响。试验结果表明,含钢率越大,构件的承载力及延性也会相应增加,钢骨混凝土异形柱具有较高的承载能力和较好的延性。
刁晓征, 徐亚丰
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Structural strength failure mechanism of X52 natural gas pipeline with corrosion defects under hydrogen-blended environment [PDF]
ObjectiveThis study aims to explore the structural strength deterioration mechanism of pipelines with corrosion defects in hydrogen-blended environments.MethodsBased on the experimental data, an analysis is made of the load bearing performance of X52 ...
Deqiang WANG +4 more
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Jianzhu Gangjiegou Jinzhan, 2007 本文分析了半刚性连接组合梁框架的在水平荷载作用下的受力特性,提出了对于具有合理构造措施的半刚性连接框架,采用塑性分析方法进行在水平荷载作用下的框架整体极限承载能力、组合梁的承载能力及框架柱的承载能力验算。采用塑性分析方法可使设计计算工作量极大地降低,而且能给出较为安全和准确的分析结果,这可供半刚性连接框架的实际设计参考。
刘清平, 李国强, 王静峰
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Study on properties of polypropylene fiber-modified ultrafine cement composite grouting materials [PDF]
In order to obtain high performance cement-based grouting materials for mining and expand the application of staple fiber in the field of full-length anchorage, Utilizing ultrafine silica cement as the binder material, with the addition of accelerator ...
Guangming ZHAO +6 more
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Jianzhu Gangjiegou Jinzhan, 2021 对7根设肋薄壁方钢管混凝土柱进行了拟静力试验,研究了加劲肋设置数量、轴压比和长细比对试件的承载能力、延性和耗能能力的影响。同时使用ABAQUS软件对带肋薄壁方钢管混凝土柱进行了受力全过程分析,模拟结果与试验结论基本一致。研究结果表明:在达到承载力前,无肋试件已经发生鼓曲,鼓曲在达到承载力后迅速增大从而导致焊缝开裂,钢管对混凝土的作用未充分发挥时试件就已破坏。带肋试件由于加劲肋对外部钢管的拉结作用,延缓了试件局部鼓曲的发生,试件材料性能得以充分利用,因此带肋试件的承载力、延性性能和耗能性能均优于无肋试件 ...
邢新, 李斌, 高春彦
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Verification of Toughended Laminated Glass Based on ANSYS [PDF]
, 2014 基于有限元分析软件AnSyS对某型水洞的底部和侧边的钢化夹胶玻璃进行强度校核。在分析中,采用实际尺寸对玻璃进行几何建模,充分考虑玻璃中间PVb夹胶层的材料属性以及玻璃与工字钢的面接触,按照实际受力情况进行非线性分析。根据计算的应力和应变,对玻璃及PVb的强度和变形量进行校核。An exploratory strength verification of laminated glass at bottom and side of a water tunnel was implemented based ...
刘锦生, 杨锦文, 鲍锋
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Study on the support performance of anti-impacting and energy-absorbing concrete-filled steel tube arches in roadways [PDF]
In response to the problem of lack of shrinkable pressure-allowing performance of steel pipe concrete arch in the current roadway support, an anti-impacting and energy-absorbing steel pipe concrete arch structure is designed from the perspective of ...
Dong AN +4 more
core +1 more source
Jianzhu Gangjiegou Jinzhan, 2023 为研究钢管混凝土加劲环管板节点在轴向拉力作用下的受力性能，开展了3个节点试件的单调加载试验，分别得到了管板节点加强前后的荷载-位移曲线和破坏模式。试验结果表明：SPR节点在单调荷载作用下主管和加劲环发生局部屈曲，表现为延性破坏；CFT节点在荷载作用下主管壁发生剪切破坏，荷载-位移曲线没有明显的屈服段，表现为脆性破坏；CFTR节点在荷载作用下，连接板处加劲环发生剪切破坏，同时加劲环局部V形屈曲；加劲环能够明显提高管板节点的承载力，同时改善节点的塑性性能；相较于主管外设加劲环 ...
王宇航, 王光钊, 周绪红, 王康
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Principle and technology of step strengthening control of soft rock argillization roadway in coal mine [PDF]
The sedimentary rock strata of the coal measure are generally characterised by significant argillity, high water content and weak lithology. The problem of controlling the stability of the surrounding rock in soft rock argillation roadways has become ...
Guichen LI +6 more
core +1 more source
Jianzhu Gangjiegou Jinzhan, 2021 在大跨度空间结构中,采用变高度变宽度加劲箱形截面形式的大跨度钢箱梁的力学行为非常复杂,除采用有限元计算分析之外,有必要对其承载性能进行试验研究,特别是足尺试验更能获取其整体承载能力和局部变形特性。为研究珠海国际会展中心二期屋面变截面加劲骨架式钢箱梁在设计荷载下的承载性能,首次提出一种合理简明且成本低廉的大跨度钢箱梁静载试验用横卧预应力加载方案,采用有限元计算结果对加载方案进行论证,成功进行大跨度足尺钢箱梁加载至设计荷载的承载力试验。试验结果表明,在设计荷载下钢箱梁的应力及变形均满足承载要求 ...
周进兵, 周安全, 徐余凌, 刘卓
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