Volume 37 Issue 12
Dec.  2022
Turn off MathJax
Article Contents
XU Jianshe, WU Jin, LU Jin, ZHANG Qian. Experimental Investigation of a Fan-Shaped Assembled Joint for Curved Lattice Shells[J]. STEEL CONSTRUCTION(Chinese & English), 2022, 37(12): 1-9. doi: 10.13206/j.gjgS22081402
Citation: XU Jianshe, WU Jin, LU Jin, ZHANG Qian. Experimental Investigation of a Fan-Shaped Assembled Joint for Curved Lattice Shells[J]. STEEL CONSTRUCTION(Chinese & English), 2022, 37(12): 1-9. doi: 10.13206/j.gjgS22081402

Experimental Investigation of a Fan-Shaped Assembled Joint for Curved Lattice Shells

doi: 10.13206/j.gjgS22081402
  • Received Date: 2022-08-14
    Available Online: 2023-04-20
  • A new fan-shaped assembled joint for curved lattice shell structure is proposed, which is mainly composed of three parts: fan-shaped component, central rib plates and high-strength bolts. Different from the traditional welded joints, the main sections of this joint are prefabricated by the factory and assembled on site using high-strength bolts, which not only reduces the welding work but also avoids overhead welding, and reduces the construction difficulty and risk. In addition, the joint is connected without cover plates, fully reflecting its semi-rigid characteristics, and also facilitating later maintenance. The static comparison experiment between the assembled joint and the welded joint was conducted for exploring mechanical characteristics of the joint. A total of six full-scale joint specimens were tested with the type and loading condition as test variables. The strain distribution, load-displacement curve, moment-rotation curve and failure mode of the key parts were analyzed, and the weak parts and the influence of bias pressure were obtained. The evolution process of mechanical characteristics under uniaxial compression and bending was analyzed by finite element method and compared with the experimental results. Through the experiment and finite element analysis, the following conclusions can be drawn: under uniaxial compression, the fan-shaped assembled joint shows the same mechanical performance as the welded joint, the force is reliable, the deformation is small, and the axial stiffness is very close during the whole process of loading. Under the eccentric compression, the axial stiffness of the fan-shaped assembled joint decreases significantly, indicating the influence of the compression-bending combination on the joint should be considered in the practical engineering application. In the bending test, the failure process of the fan-shaped assembled joint experiences three stages: 1) the elastic stage(<81.5 kN·m), in which the joint shows good bending performance; 2) the elastic-plastic stage(81.5-142.6 kN·m), in which the bending stiffness decreases markedly, and the rotation increases gradually owing to bolt slippage and deformation of the bolt hole wall; and 3) the plastic failure stage(>143 kN·m), in which the bolt is brittle and the specimen fails, indicating that the key to improving the bending stiffness of the fan-shaped assembled joint is improving the shear strength of the bolt. The final failure mode, stress distribution, and bending moment-rotation curve of the finite element analysis are in good agreement with those of the experiments.
  • loading
  • [1]
    Parke G A R,Behnejad S A,Makowski Z S.A pioneer of space structures[J].International Journal of Space Structures,2015,30(3/4):191-201.DOI: 10.1260/0266-3511.30.3-4.191.
    [2]
    冯远,张恒飞,向新岸,等.跨度800 m双层网壳结构静力及稳定性能研究[J].建筑结构学报,2017,38(1):32-41.
    [3]
    张中昊,刘璐,支旭东,等.索撑双向网格型单层柱面网壳稳定性研究[J].建筑结构学报,2021,42(1):39-47.
    [4]
    阮永辉,王宝通.某新型单层网壳节点的承载力研究分析[J].建筑结构,2016,46(增刊1):528-531.
    [5]
    黄泽韡.某螺栓球柱节点网壳结构设计[C]//第十七届全国现代结构工程学术研讨会论文集.天津:2017.
    [6]
    El-Sheikh A L.Numerical snalysis of space trusses with flexible member-end joints[J].International Journal of Space Structures,1993,8(3):189-197.DOI: 10.1177/026635119300800305.
    [7]
    Yu Z C,Dong J P,Li H J,et al.Effect of joint stiffness on load-carrying capacity of three-way single-layer reticulated dome[J].Spatial Structures,2021,27(1):82-96,81.
    [8]
    尹晨光.空间钢结构新型复式球节点性能分析与试验研究[D].南京:东南大学,2016.
    [9]
    柯嘉.碗式半刚性节点性能及单层球面网壳稳定性研究[D].哈尔滨:哈尔滨工业大学,2009.
    [10]
    蔡健,王永琦,陈庆军,等.一种新型单层网壳节点的力学性能研究[J].西南交通大学学报,2019,54(1):145-153.
    [11]
    金跃东,赵阳,汪儒灏,等.矩形钢管单层网壳预埋螺栓装配式节点及其受弯性能试验研究[J].建筑结构学报,2019,40(2):153-160.
    [12]
    中华人民共和国国家质量监督检验检疫总局.金属材料拉伸试验第1部分:室温试验方法:GB/T 228.1—2010[S].北京:中国标准出版社,2011.
    [13]
    黄海,汪贵临,郭坤睿,等.某钢结构工程复杂节点模型试验研究[J].建筑结构,2016,46(增刊2):383-386.
    [14]
    马会环,范峰,柯嘉,等.网架网壳结构半刚性节点试验研究[J].建筑结构学报,2010,31(11):65-71

    ,118.
    [15]
    Vatin N,Bagautdinov R,Andreev K.Advanced method for semi-rigid joints design[J].Applied Mechanics and Materials,2015,725-726:710-715.DOI: 10.4028/www.scientific.net/amm.725-726.710.
    [16]
    Loo W Y,Quenneville P,Chouw N.A new type of symmetric slip-friction connector[J].Journal of Constructional Steel Research,2014,94:11-22.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (162) PDF downloads(16) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return