Results 21 to 30 of about 2,328 (151)
Jianzhu Gangjiegou Jinzhan, 2022 为了研究初始几何缺陷对跨层平面桁架稳定承载力的影响，以某车站正立面跨层平面桁架为例，在1∶10的缩尺模型静力试验的基础上，结合有限元模型，考察了不同幅值的整体缺陷与构件缺陷对结构稳定承载力的影响。对比了一致缺陷模态法和静力失稳模态法这两种整体缺陷分布方法对结构稳定承载力的影响。研究表明：达到承载力极限前，桁架平面外位移量较少，未发生平面外失稳，在规范允许的偏差范围内，缺陷对结构的承载力影响几乎可以忽略；跨层平面桁架结构稳定承载力对初始几何缺陷的敏感性较弱，但其平面内及平面外位移对几何缺陷较敏感 ...
赵雷 +4 more
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Analysis of collapse modes of stiffened panels subjected to combined axial and lateral loads [PDF]
ObjectiveThis study analyzes the influence of lateral loads on the ultimate strength and collapse modes of stiffened panels subjected to combined loads.
Deyu WANG, Guangyu GUO, Jinju CUI
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Jianzhu Gangjiegou Jinzhan, 2023 双钢板-混凝土组合剪力墙作为建筑物中的抗侧力构件，具有承载力高，耗能能力强和延性好等优点。在高层和超高层建筑结构中，双钢板-混凝土组合剪力墙需要承担一定的竖向荷载，钢板在正常使用阶段要求不发生弹性屈曲。钢板初始几何缺陷是影响双钢板-混凝土组合剪力墙轴压荷载下钢板屈曲应力的重要指标，而在以往的研究中，钢板屈曲应力的计算方法并未予以考虑。本文基于前期的双钢板-混凝土组合剪力墙轴压试验研究，采用分析软件ABAQUS建立了双钢板-混凝土组合剪力墙轴压试件有限元模型，模型中引入了钢板的初始几何缺陷，从钢板屈曲应变、
于跃, 石军, 蔡利建, 郭兰慧
doaj
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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Research progress on fracture control of accidental leakage and decompression in CO2 pipeline transportation [PDF]
, 2022 Pipeline is the optimal way in transporting large amounts of carbon dioxide (CO2) in CCUS (carbon capture, utilization and storage) technology industrial chain.
Chen, L +9 more
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Integrative Conservation, Volume 4, Issue 3, Page 272-276, September 2025.This photo displays one of our camera locations within the core area of Mt. Siguniang National Nature Reserve, China. The site features steep scree slopes and > 1000 meters elevational gradient with minimal anthropogenic disturbance. Camera traps captured three unique snow leopard individuals (Mr.
Dongrui Wang +6 more
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Analysis of optimization characteristics of titanium alloy double layer stiffened cylindrical shell structure under different design requirements [PDF]
ObjectiveIn order to explore the characteristics of optimization design schemes of titanium alloy double layer stiffened cylindrical shell structures under different length-to-diameter ratios and calculation pressures, a mathematical model for the ...
Jun LIU +4 more
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Jianzhu Gangjiegou Jinzhan, 2023 利用ABAQUS有限元软件对薄壁不锈钢圆管轴压柱的轴压稳定性能进行了数值模拟，并考察了材料性能参数、材料各向异性、初始几何缺陷、径厚比、长细比等因素的影响。分析结果表明：材料各向异性和初始局部缺陷的取值对构件轴压稳定性能影响较小，可以忽略；初始整体缺陷取值对构件轴压稳定性能影响较大，有限元模型中取构件长度的1/2 000可较为准确地模拟试验结果；材料性能参数、径厚比和长细比对构件轴压稳定性能影响较大。通过对不同径厚比构件的分析，提出了防止构件发生局部屈曲的容许径厚比建议公式 ...
朱浩川, 许友武, 姚谏
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Research on Smith's method of hull girder ultimate strength based on elastic shakedown limit state [PDF]
ObjectiveTo accurately assess the ultimate strength of a hull girder, this study analyzes the elastic shakedown characteristics of hull stiffeners under cyclic loading.
Huwei CUI +3 more
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Jianzhu Gangjiegou Jinzhan, 2022 《钢结构设计标准》（GB 50017—2017）加入了直接分析法这一新的内容，此类方法重要的一环是对初始缺陷的考虑。重点总结归纳了中国、美国、欧洲的现行钢结构规范所推荐且运用方便的“假想荷载法”的基本原理。从假想荷载法的不足出发，针对《钢结构设计标准》（GB 50017—2017），令具有初始几何缺陷的轴压构件的最大二阶弯矩等效于受假想力作用的理想轴压构件的最大二阶弯矩，推导出了使用假想力来考虑初始缺陷的“二阶假想荷载法”的计算式，并从理论出发定义了计算式的物理量以及二阶假想荷载的施加方式 ...
马飞, 刘占科
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