Results 11 to 20 of about 2,297 (89)
Predicting bearing capacity of gently inclined bauxite pillar based on numerical simulation and machine learning [PDF]
Pillar strength is significantly affected by inclination, making accurate prediction of inclined pillar strength crucial for the safety of underground quarries in inclined ore bodies.
Biaobiao YU +3 more
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Jianzhu Gangjiegou Jinzhan, 2023 针对板肋加劲板局部失稳破坏模式的不同，建立不同宽厚比的板肋加劲板有限元模型进行局部稳定分析，研究不同失稳模式下板肋加劲板的受力机理与影响因素，同时采用三次多项式对四边简支板、构件中被加劲板的局部稳定折减系数进行非线性曲线拟合，并与各国规范曲线进行对比。研究发现：被加劲板局部失稳模型表现为被加劲板与板肋的面外多波失稳变形；残余压应力分布对两类失稳构件极限承载力的影响不大；局部缺陷对板肋失稳构件的影响较小，而对被加劲板失稳的影响较大。构件中被加劲板的拟合曲线更早出现折减，不同钢材强度的拟合曲线趋势基本一致 ...
赵秋 +4 more
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Research on the Influence of Pile Shoe Insertion and Removal on the Neighboring Three-Cylinder Jacket Foundation in Clay [PDF]
[Introduction] The construction process of pile insertion and removal for installing offshore wind turbines on mobile platforms is risky, which can easily affect the working performance of adjacent infrastructure, and even lead to its instability and ...
Di HAO +3 more
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Jianzhu Gangjiegou Jinzhan, 2021 冷成型钢构件在经历火灾(高温)后,力学性能可能发生衰减,需要关注其承载力的变化并做出准确评估。因此,在现有高强冷成型钢过火后材性与构件测试结果的基础上,通过数值仿真模拟预测构件经历不同温度后的力学行为。通过参数分析,开展开口截面承压构件过火后性能分析,研究高温后的构件长细比、截面形式对承载力和破坏模式的影响,评估常温构件设计方法的适用性。有限元建模和参数分析的结果表明:(1)冷成型钢构件材性的衰减不是影响其过火后性能的唯一因素,在特定温度段须考虑重量折减;(2 ...
张佳慧, 孙梦茹
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, 2011 本文以柿竹园野鸡尾尾矿库为依托,采用有限元方法对其渗流及稳定性进行分析。利用热流与地下水渗流有限元实现环境的相似性,模拟尾矿库的渗流场并进行分析,确定渗流浸润线及水头分布情况;对浸润线上下的土体采用不同的容重,并考虑有效应力参数,建立有限元静力分析模型,并分别从应力、滑移面、塑性区等方面对尾矿库的静力稳定性做了简要分析,同时研究探讨库区水位变化对尾矿库稳定性的影响。结果表明:在给定的计算条件下,野鸡尾尾矿库在渗流下的稳定性良好,具有较高的安全储备 ...
周舒威 +3 more
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Determination of ultimate bearing capacity of pile under static load test based on cusp catastrophe model [PDF]
There are many analysis methods to determine the ultimate bearing capacity of single pile by using the load-settlement curve obtained from the static load test, but so far, reasonable and theoretical calculation method to solve the ultimate bearing ...
Jibao YANG
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Effect of retaining wall leakage on the deformation behavior of foundation pit in water-rich sandy strata [PDF]
Aiming at the disaster problem caused by leakage of water and sand in deep excavation, it is of great significance to reveal the evolution of foundation pit leakage disaster and its control method for underground engineering construction safety. Based on
Guolin YANG +3 more
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Jianzhu Gangjiegou Jinzhan, 2023 在各国现行规范中，强度叠加法广泛应用于型钢混凝土柱的受剪承载力计算，即型钢混凝土柱的受剪承载力单纯等同于型钢腹板受剪承载力与钢筋混凝土部分受剪承载力之和，不考虑二者间的相互作用。但因型钢与钢筋混凝土部分材料属性与截面面积差异巨大，导致两部分的受剪承载力无法同时达到峰值，致使传统强度叠合法偏于不安全。为解决上述问题，在传统桁架-拱模型和现行规范计算方法中引入了变形协调条件，以此确定了型钢与钢筋混凝土部分在受剪全过程中的承载力分配准则，并基于41个型钢混凝土柱的试验结果验证了所提方法的有效性。计算结果表明 ...
薛亦聪 +4 more
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有限元强度折减法在边坡稳定性分析中的有效性及结果检验方法 [PDF]
, 2017 有限元强度折减法的有效性及结果评价决定该方法是否能在工程上得到认可及推广的关键。本文基于有理论解的地基承载力问题和澳大利亚计算机应用协会(ACADS)边坡稳定性典型考题,通过计算值与理论解的对比以及塑性贯通区结果,对有限元强度折减法用于边坡稳定分析的有效性、失稳判据以及结果评价等问题进行了系统研究,提出了以塑性带宽度与长度之比检验计算结果的方法。结果发现,在足够且合理的网格密度下,有限元强度折减法分析边坡稳定性是有效的,不同类型的临界状态判据差异不大,而塑性区贯通判据最为客观 ...
吴梦喜, 杨家修, 高桂云
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Deformation characteristics and fluid-solid coupled analysis of a super-deep circular foundation pit in soft soils [PDF]
The characteristics of super-deep circular foundation pit project in soft soil area are complexity, dangers, and scarcity. It is of great significance to simulate and predict its deformation accurately.
Dean SUN, Shujia LIU, Xin MA
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