Results 21 to 30 of about 754 (129)
Jianzhu Gangjiegou Jinzhan, 2022 为研究钢管超高性能混凝土在标准火灾下的受力性能和破坏机理，建立了钢管超高性能混凝土柱的耐火有限元模型，并重点对比分析了超高性能混凝土与部分其他类型混凝土的热工参数及高温下本构关系的不同对构件温度和耐火极限等的影响，结果表明：钢管超高性能混凝土构件的核心混凝土温度明显高于相应的普通钢管混凝土或钢管高强混凝土构件的核心混凝土温度，且对于不同配合比的超高性能混凝土构件，其核心混凝土温度场也存在一定差异；高温下钢管对核心超高性能混凝土的约束作用可以忽略不计；对于不同长细比的构件 ...
张旭 +4 more
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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
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Research on Bearing Capacity of Angle Steel Transmission Tower Subject to Parallel Reinforcement by Fitting Channel Steel [PDF]
, 2023 [Introduction] The existing angle steel transmission tower has been running for many years, and the structural damage leads to the reduction of service performance.
Donghong ZHANG +4 more
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波形钢腹板钢管混凝土模型拱面内极限承载力试验研究 [PDF]
, 2010 进行了波形钢腹板钢管混凝土模型拱的面内两点非对称和对称加载试验。对模型拱的挠度、钢管应变、波形钢腹板应变、极限承载力等进行了分析。试验结果表明:波形钢腹板钢管混凝土拱是一种受力性能很好的新型组合拱。在这种结构中,波形钢腹板与钢管混凝土弦杆均能发挥其各自的优势。它与钢管混凝土单圆管和哑铃形拱相比,刚度与承载力有了很大提高;与钢管混凝土桁拱相比,避开了节点破坏问题,模型拱呈总体破坏特征,从而使其延性与极限承载力明显提高。有限元分析表明:在承载力分析中应考虑双重非线性的影响 ...
陈宝春, 高婧
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Study on damage mechanism and treatment of water sprayed roof in Jurassic stratum roadway [PDF]
, 2023 The roof of the Jurassic main coal seam in western China generally contained low level weak rich water layer, which led to the long-term watering of the roof of the coal roadway especially the roof anchor cable hole and the reduction of the roof ...
Guohui WEN +6 more
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Study on the deterioration patterns of reinforced concrete under full immersion environment in subtropical ocean [PDF]
Aiming at the corrosion problem of steel bars in concrete in subtropical marine environment, the full immersion corrosion experiments of reinforced concrete specimens with different strength grades and rust inhibitor contents were carried out by ...
CHEN Wenlong +5 more
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Jianzhu Gangjiegou Jinzhan, 2012 通过试验和理论对空、实心钢管再生混凝土柱的极限承载力做了研究,研究表明,实心钢管再生混凝土短柱可以采用实心钢管普通混凝土短柱的极限承载力计算公式。空心钢管再生混凝土长柱的承载力与再生混凝土弹性模量有关。火灾试验表明,钢管再生混凝土长柱的耐火性能要优于钢管普通混凝土,根据试验提出了钢管再生混凝土柱耐火时间的计算公式。
刘轶翔, 查晓雄
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Jianzhu Gangjiegou Jinzhan, 2021 建立圆形、正方形、圆端形、六边形钢管混凝土柱在火灾下的有限元模型,利用现有试验结果验证有限元模型。基于该模型,研究保护层种类、保护层厚度、截面形状和截面周长等参数对钢管混凝土柱耐火极限的影响。分析表明,试件耐火极限随着保护层厚度和截面周长的增加而增大。厚涂型涂料的防火效果优于砂浆的防火效果。在长细比和截面周长相同的情况下,圆端形钢管混凝土柱的耐火极限高于圆形钢管混凝土柱;六边形钢管混凝土柱的耐火极限优于方钢管混凝土柱;绕强轴破坏的耐火极限略低于绕弱轴破坏的情况。基于周长等效原则,可将圆端形(或六边形 ...
王志滨 +3 more
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Research on web stability and human-induced vibration of Concrete filled steel tubular with corrugated steel web composite structure [PDF]
, 2014 波形钢腹板-钢管混凝土组合结构作为一种新型结构，可以发挥钢管混凝土抗压能力强和波形钢腹抗剪能力高的优点，其作为腹板的波形钢还具有自重轻、受力明确、施工方便、美观等优点，使得这种组合结构具有强大的竞争力和广泛的应用前景，作为一种新型结构，前人对其进行的理论与试验研究甚少。为此，本文在侨英人行天桥荷载试验的基础上，建立了该桥的有限元模型，对该桥的波形钢腹板稳定性和人致振动特性进行了有限元分析，并总结规律。本文的工作主要集中在以下几个方面： 通过对侨英人行天桥的荷载试验和有限元分析，结果表明 ...
曾显通
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Shaking Table Test and Time-history Analysis of High-rise Diagrid Tube Structure [PDF]
, 2016 As a new type of high-rise building structure system, diagridtube in tube structure is increasingly applied in high-rise building.Guangzhou West tower is the first high-rise diagrid tube intube structure in China.
He, Guangjie +5 more
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