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轻钢-速生木自攻螺钉连接构件抗拔性能研究

陈志华 冯浩 刘佳迪

陈志华, 冯浩, 刘佳迪. 轻钢-速生木自攻螺钉连接构件抗拔性能研究[J]. 钢结构(中英文), 2023, 38(9): 1-8. doi: 10.13206/j.gjgS23061401
引用本文: 陈志华, 冯浩, 刘佳迪. 轻钢-速生木自攻螺钉连接构件抗拔性能研究[J]. 钢结构(中英文), 2023, 38(9): 1-8. doi: 10.13206/j.gjgS23061401
Zhihua Chen, Hao Feng, Jiadi Liu. Research on the Pull-out Behavior of Light Gauge Steel-Fast Growing Timber with Self-Tapping Screw Connection[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(9): 1-8. doi: 10.13206/j.gjgS23061401
Citation: Zhihua Chen, Hao Feng, Jiadi Liu. Research on the Pull-out Behavior of Light Gauge Steel-Fast Growing Timber with Self-Tapping Screw Connection[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(9): 1-8. doi: 10.13206/j.gjgS23061401

轻钢-速生木自攻螺钉连接构件抗拔性能研究

doi: 10.13206/j.gjgS23061401
基金项目: 

国家重点研发计划(2019YFD11010000)

详细信息
    作者简介:

    陈志华,男,1966年出生,博士,教授

    通讯作者:

    刘佳迪,男,1986年出生,博士,副教授,jdliu@tju.edu.cn。

Research on the Pull-out Behavior of Light Gauge Steel-Fast Growing Timber with Self-Tapping Screw Connection

  • 摘要: 将木材应用到建筑结构当中,既可以发挥木材环保的特性,又能够使建筑富有美感。我国的速生木材产量丰富,应用到建筑当中可以减少对进口木材的依赖,降低施工成本。但是由于速生木强度较弱、结构疏松不均匀,在建筑中应用有一定的局限性,引入轻钢可以削弱木材的天然缺陷,同时木材也可以解决轻钢稳定性不足的问题。轻钢-速生木结构是将钢材引入到传统木结构中的一种新型建筑结构,它兼顾了钢材和木材两种材料的优点,在村镇住宅等建筑结构中具有一定的应用前景。由于自攻螺钉连接的轻钢-速生木结构的力学行为受到自攻螺钉抗拔性能的影响较大,同时现有研究中对此类结构的自攻螺钉抗拔性能相关研究并不完善。因此对由国产速生树种杉木与Q235级薄钢板构成的自攻螺钉钢木组合构件进行了抗拔试验,将薄钢板与木块用自攻螺钉连接起来放置到自制夹具当中,运用万能试验机将螺钉拔出,用以研究其力学性能。试验过程中选取了钢板厚度和纹理方向两个重要试验参数,得到了自攻螺钉的破坏模式、抗拔极限荷载和延性。研究结果表明:试件的破坏模式均为自攻螺钉拔出破坏,钉子拔出后螺纹有明显损坏,螺纹内有铁屑和木屑堆积,钢板存在扩孔以及鼓曲现象;当螺钉垂直于顺纹方向拔出时,试件的离散性较低,同时增加钢板厚度也可以降低离散性;轻钢的加入可以显著提高构件的极限荷载,提高节点的受力性能;钢板对端面极限荷载影响要大于另外两个方向;相同条件下,端面极限荷载要低于另外两个方向,并随着钢板厚度的增加差距逐渐降低;相同条件下,自攻螺钉从径向以及弦向拔出时,承载能力差别不大,两个方向极限荷载差距不超过10%;钢板厚度为1.5 mm时,试件相较于其他钢板厚度试件表现出较好的延性,但是试件总体延性系数低于3,延性系数较小。最后,基于欧洲木结构设计规范和我国GB 50017—2017《钢结构设计标准》,提出了适用于自攻螺钉连接的杉木与薄钢板组成的钢木组合构件的抗拔承载力计算公式,公式误差均在15%以内,验证了公式的适用性和准确性。
  • [1] Zhang A,Liu J,Wang J,et al.Experimental and analytical behaviour of light gauge steel-fast growing timber composite shear connections[J].Structures,2023,47:1691-1709.
    [2] Chen Z,Niu X,Liu J,et al.Experimental study of thin-walled steel-timber single-shear connection with a self-tapping screw[J].Structures,2021,34:4389-4405.
    [3] 程小武,李银鹏,刘伟庆,等.自攻螺钉在杉木中的抗拔性能试验研究[J].南京工业大学学报(自然科学版),2016,38(5):111-115.
    [4] 方李靖,屈文俊,张盛东.自攻螺钉在胶合木中的拉拔破坏模型[J].工程力学,2022,39(6):212-225.
    [5] Mirdad M A H,Jucutan A,Khan R,et al.Embedment and withdrawal stiffness predictions of self-tapping screws in timber[J/OL].Construction and Building Materials,2022,345[2022-02-05].https://www.sciencedirect.com/science/article/pii/S0950061822020542via%3Dihub.
    [6] Li X,Ashraf M,Subhani M,et al.Withdrawal resistance of self-tapping screws inserted on the narrow face of cross laminated timber made from Radiata Pine[J].Structures,2021,31:1130-1140.
    [7] Khai D T,Young G J.Withdrawal capacity and strength of self-tapping screws on cross-laminated timber[J].Structures,2022,37:772-786.
    [8] 汪大洋,辛志勇,区彤,等.自钻自攻螺钉与不同基材连接节点抗拉拔承载力试验与理论研究[J].工程力学,2023,40(1):190-200.
    [9] 于敬海,赵彧洋,蒋智宇,等.直立锁边金属屋面系统关键连接节点抗拉承载力试验[J].建筑科学与工程学报,2019,36(1):112-119.
    [10] 李元齐,帅逸群,沈祖炎,等.冷弯薄壁型钢自攻螺钉连接抗拉性能试验研究[J].建筑结构学报,2015,36(12):143-152.
    [11] Sivapathasundaram M,Mahendran M.New pull-out capacity equations for the design of screw fastener connections in steel cladding systems[J].Thin-Walled Structures,2018,122:439-451.
    [12] Sivapathasundaram M,Mahendran M.Pull-out capacity of multiple screw fastener connections in cold-formed steel roof battens[J].Journal of Constructional Steel Research,2018,144:40-52.
    [13] Liu W,Deng L,Zhong W,et al.Parametric study on the pull-out performance of screw connections in cold-formed thin-walled steel structures[J/OL].Engineering Structures,2023,274[2022-01-08].https://www.sciencedirect.com/science/article/pii/S0141029622010835via%3Dihub.
    [14] Hassanieh A,Valipour H R,Bradford M A.Experimental and analytical behaviour of steel-timber composite connections[J].Construction and Building Materials,2016,118:63-75.
    [15] Hassanieh A,Valipour H R,Bradford M A,et al.Modelling of steel-timber composite connections:validation of finite element model and parametric study[J].Engineering Structures,2017,138:35-49.
    [16] Ng A L Y,Lau H H,Fang Z,et al.Experimental studies of timber to cold-formed steel connections with self-drilling screws[J].Structures,2023,49:492-507.
    [17] 中国国家标准化管理委员会.木材握钉力试验方法:GB/T 14018—2009[S].北京:中国标准出版社,2009.
    [18] American Society for Testing and Materials.Standard test method for mechanical fasteners in wood:ASTM D1761-12[S].Philadelphia:ASTM,2012.
    [19] European Committee for Standardization.Eurocode 5:design of timber structures-part 1-1:general-common rules and rules for buildings:EN 1995-1-1∶2004[S].Brussels,Belgium:European Committee for Standardization,2004.
    [20] American Iron and Steel Institute (AISI).North American specification for the design of cold-formed steel structural members:AISI S100-2007[S].Washington DC:AISI,2007.
    [21] 中华人民共和国住房和城乡建设部.钢结构设计标准:GB 50017—2017[S].北京:中国建筑工业出版社,2018.
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出版历程
  • 收稿日期:  2023-06-14
  • 网络出版日期:  2023-10-20

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