Results 11 to 20 of about 754 (129)
建筑结构, 2022 论文运用钢管混凝土柱变截面折线形牛腿钢筋连接施工技术，解决了RC梁与钢管混凝土柱梁柱节点处钢筋施工、混凝土浇筑的质量保障问题。折线形钢牛腿可使梁纵筋分层焊接于钢牛腿翼缘板面上，让梁筋有足够的焊接操作空间，和良好焊接操作环境，给钢筋锚固质量创造了良好的外在环境条件。钢牛腿变截面翼缘板设计可使节点处混凝土粗骨料易于下落及振捣，使混凝土浇筑质量密实可靠，最主要是混凝土通过牛腿下翼板底的距离变短，减少牛腿地面混凝土蜂窝麻面和不密实。因为钢筋焊全为平焊，节省工时；浇筑混凝土密实，表观质量好，避免返修。
丁 铁军
semanticscholar +1 more source
Review and development of surrounding rock control technology for gob-side entry retaining in China [PDF]
, 2023 The research and application of gob-side entry retaining (GER) technology in Chinese coal mines has been over 60 years. Two major technical types including GER with filling and GER with roof cutting were developed.
Honglin LIU +7 more
core +1 more source
Jianzhu Gangjiegou Jinzhan, 2003 本文通过沪东造船厂船体装焊车间大跨度、大柱距钢管混凝土柱的设计研究,论述了在大吊车荷载作用下,钢管混凝土柱比其他形式的柱更为经济,更为合理;对柱脚、牛腿、肩粱以及钢管混凝土组合柱的节点构造与受力性能提出了新的看法;并简单介绍了钢管混凝土组合柱的计算要点。
吴建林, 姚永
doaj +1 more source
Comparative Analysis of Slenderness Ratio Calculation Methods of Cross Bracings for Towers Between China and EU Overhead Transmission Line Standards [PDF]
, 2023 [Introduction] This paper aims to effectively avoid the design quality problems caused by the difference between domestic and foreign engineering design specifications. The study makes comparative analysis of slenderness ratio of cross bracings for angle
Hongliang GUO +3 more
core +1 more source
建筑技术研究, 2020 钢管混凝土结构承载力高、施工周期短、耐火性能好,成本较低,在相同的截面尺寸下,比钢结构大约节省50%的钢材,比混凝土结构减少50%的混凝土用量,承载力高主要体现在相同截面尺寸下,钢管混凝土的承载力远远大于钢结构和混凝土结构,具体的原因本文做了详细的阐述。本文采用ansys对方钢管混凝土短柱单向荷载作用下进行非线性分析,对钢管采用shell181单元,核心混凝土采用solid65单元模拟,得出的结论是模拟的极限承载力介于规范和韩林海推荐的公式计算结果之间,且偏差不大,由计算结果对比看出 ...
穿云 罗 +3 more
semanticscholar +1 more source
智能城市应用, 2020 钢管混凝土拱桥施工质量对公路桥梁建设有直接影响，为了进一步强化公路桥梁建设效果，要求注重施工技术的应用，保证工程施工质量。文章简述了钢管混凝土拱桥施工特点，从多方面分析了公路桥梁建设中钢管混凝土拱桥施工技术的具体应用，为相关人员提供了理论参考，有效提高了公路桥梁建设水平。
军祥 盖
semanticscholar +1 more source
Jianzhu Gangjiegou Jinzhan, 2021 后置钢管式钢筋混凝土柱是一种新型的加固方法,是在外包钢方法、套管约束混凝土方法以及钢管混凝土叠合柱的基础上提出的。采用后置钢管式钢筋混凝土柱对既有钢筋混凝土柱进行加固,是在原有钢筋混凝土柱四周凿出一部分混凝土形成空腔,外包钢板,二者之间的空腔灌浆形成钢管混凝土组合结构,且不改变原有柱的尺寸。在加固施工现场对后置式钢管混凝土加固的柱子进行现场跟踪监测,监测钢管、纵向受力筋和灌浆料的应力变化,研究应力传递规律及轴力分配情况。并用ABAQUS有限元分析软件建模分析对比监测结果。
万凌昕, 肖亚明, 朱华
doaj
Jianzhu Gangjiegou Jinzhan, 2022 在钢管混凝土内部填充部分木芯能够在不大幅降低钢管混凝土柱承载力的情况下，有效减轻钢管混凝土柱的自重。采用ABAQUS有限元软件建立内填木芯钢管混凝土短柱实体模型，研究了不同含木率、木芯截面形状、钢管截面形式和钢管壁厚等参数对内填木芯钢管混凝土短柱轴压性能的影响。结果表明：一定范围内，内填木芯使得钢管混凝土短柱的承载力有所下降，但是柱的强重比却逐渐增大；木芯的截面形式对柱的承载力总体上影响较小。同时借鉴约束钢管的本构关系，提出内填木芯钢管混凝土轴压短柱承载力的简化计算式 ...
荣秀强, 凌志彬
doaj
Bearing rule and instability criterion of pier column roadside supports of GER in fully mechanized mining face [PDF]
The stability of the rock mass at the interface between roadside supports and the roof is critical for gob-side entry retaining. To address the issue of 'roof piercing and column failure' caused by instability at the pier-column and roof contact ...
Genshui WU +6 more
core +1 more source
, 2017 In order to study the mechanical properties of early-age concrete-filled steel tube (CFST) under continuous construction process, an experimental investigation on six concrete-filled circular steel tubular short columns under multi-level loading was ...
Bao, Hao +3 more
core +2 more sources