腹板-翼缘搭接连接结构钉载分配特性研究

摘要/Abstract

摘要： 以腹板-翼缘搭接连接结构为研究对象，分析了四点弯曲、三点弯曲两种简支形式的钉载分配特性以及不同简支形式对钉传载荷的影响。利用应变电测法测量了平板及上翼缘螺栓连接区的应力分布;采用ABAQUS软件建立了三维有限元实体模型，对螺栓群的钉载分配行为进行了仿真分析。结果表明,四点弯曲试件的钉载分配特性与三点弯曲的钉载分配特性相比存在明显差异:对于四点弯曲试件，平板以及上翼缘处螺栓群的钉载几乎是对称分布的；而对于三点弯曲试件，结构的不对称造成了钉载分布的不对称。此外，无论四点弯曲试件还是三点弯曲试件，对于平板上单侧的螺栓群，钉载分配均呈两边高、中间低的“浴盆状”分布；对于上翼缘连接区的螺栓群，越靠近两工字梁对接面，钉传载荷越小，反之亦然。

关键词: 腹板-翼缘搭接连接, 钉载分配, 有限元分析, 四点弯曲, 三点弯曲

Abstract: The multi-bolted web-flange splices were studied in terms of evaluating the load distribution among bolt rows of two simply supported types, i.e., four-point bending and three-point bending, as well as the effects of different simply supported types on the bolt-transferred loads. Firstly, the stress distribution of bolted regions which were located on the splice plates and the upper flanges, was preliminarily estimated by means of the strain gauge electric testing technique. Then, three-dimensional finite element models were constructed with ABAQUS software to simulate and analyze the behaviors of the load distribution among bolt rows. The results reveal that the load distribution characteristics of four-point bending specimens are obviously different from those of three-point bending specimens. For four-point bending specimens, the load distribution of bolt rows on splice plates or the upper flanges is almost symmetrical. But what is different about three-point bending specimens is that the asymmetrical structures along the length direction of specimens result in an asymmetry of load distribution. Besides, whether the four-point bending specimens or the three-point bending specimens, the load distribution of unilateral bolt rows located on splice plates is “bathtub-shaped” with the edge rows carrying more amount of load than the inner ones. Furthermore, for bolt rows located on upper flanges, the nearer to the butt surface of two I-beams, the smaller the bolt-transferred load will be and vice versa.

Key words: web-flange splice, load distribution, finite element analysis, four-point bending, three-point bending

中图分类号:

V214.1

李斌斌1,2;赵友坤1;刘杰1. 腹板-翼缘搭接连接结构钉载分配特性研究[J]. 中国机械工程.

LI Binbin1,2;ZHAO Youkun1;LIU Jie1. Research on Load Distribution Characteristics for Web-flange Splice Structures[J]. China Mechanical Engineering.

参考文献

[1]陈雷, 邓明然, 江征风, 等. 基于坐标投影的钢桥螺栓与零件BOM自动生成方法研究[J]. 中国机械工程, 2012, 23(20):2469-2476.
CHEN Lei, DENG Mingran, JIANG Zhengfeng, et al. Study on Automatic Generation Method of BOM of Bolts and Parts of Steel Bridge Based on Coordinates Projection[J]. China Mechanical Engineering, 2012, 23(20):2469-2476.
[2]李操, 商显扬, 周鑫, 等. 箭体结构连接刚度影响因素研究[J]. 中国机械工程, 2018, 29(16):1947-1951.
LI Cao, SHANG Xianyang, ZHOU Xin, et al. Study on Influence Factors of Connection Stiffness of Rocket Structure[J]. China Mechanical Engineering, 2018, 29(16):1947-1951.
[3]李斌斌, 徐宗真, 李鹏, 等. 考虑钉头传载的阶梯搭接钉载分配特性[J]. 航空学报, 2018, 39(7): 221816.
LI Binbin, XU Zongzhen, LI Peng, et al. Characteristics of Bolt Load Distribution of Stepped Lap Joints Considering Load Transferred by Bolt-head[J]. Acta Aeronautica et Astronautica Sinica, 2018, 39(7): 221816.
[4]郁大照, 陈跃良, 高永. 螺栓连接单搭接件疲劳特性试验与全寿命估算方法研究[J]. 中国机械工程, 2013, 24(20):2747-2752.
YU Dazhao, CHEN Yueliang, GAO Yong. Study on Property Tests and Holistic Life Assessment Method for Single Bolted Joints[J]. China Mechanical Engineering, 2013, 24(20):2747-2752.
[5]ERIKSSON I, BCKLUND J, MLLER P. Design of Multiple-row Bolted Composite Joints under General In-plane Loading[J]. Composites Engineering, 1995, 5(8): 1051-1068.
[6]TANG G, YIN L F, GUO X M, et al. Finite Element Analysis and Experimental Research on Mechanical Performance of Bolt Connections of Corrugated Steel Plates[J]. International Journal of Steel Structures, 2015, 15(1): 193-204.
[7]陈齐. 主承力复合材料结构连接方案和失效模式研究[D]. 哈尔滨: 哈尔滨工程大学, 2015.
CHEN Qi. The Main Bearing Composite Joint Scheme and Study of the Failure Mode[D]. Harbin: Harbin Engineering University, 2015.
[8]XIONG Z, GUO X N, LUO Y F, et al. Numerical Analysis of Aluminum Alloy Gusset Joints Subjected to Bending Moment and Axial Force[J]. Engineering Structures, 2017, 152: 1-13.
[9]ZHANG A L, LI S H, JIANG Z Q, et al. Design Theory of Earthquake-resilient Prefabricated Sinusoidal Corrugated Web Beam-column Joint[J]. Engineering Structures, 2017, 150: 665-673.
[10]郁大照, 陈跃良, 张勇, 等. 螺接搭接件的载荷传递特性试验及三维有限元分析[J]. 中国机械工程, 2010, 21(19):2273-2278.
YU Dazhao, CHEN Yueliang, ZHANG Yong. Study on Load Transfer Properties of Bolted Joints Based on Experiments and Three-dimensional Finite Element[J]. China Mechanical Engineering, 2010, 21(19):2273-2278.
[11]KUMAR D V T G P, NAARAYAN S S, SUNDARAM S K, et al. Further Numerical and Experimental Failure Studies on Single and Multi-row Riveted Lap Joints[J]. Engineering Failure Analysis, 2012, 20(3): 9-24.
[12]JOSANDRIAMAMPIANINA, ALKATAN F, STPHAN P, et al. Determining Load Distribution between the Different Rows of Fasteners of a Hybrid Load Transfer Bolted Joint Assembly[J]. Aerospace Science & Technology, 2012, 23(1): 312-320.
[13]中国航空综合技术研究所. HB 1-103-2002 光杆公差带f9六角头螺栓[S]. 北京: 中国航空综合技术研究所, 2003.
AVIC China Aero-polytechnology Establishment. HB 1-103-2002 Hexagon-head Bolts, Shank Tolerance f9[S]. Beijing: AVIC China Aero-polytechnology Establishment, 2003.
[14]马占永. 飞机设计手册第2册: 标准和标准件[M]. 北京: 航空工业出版社, 2000: 270-272.
MA Zhanyong. Aircraft Design Manual Book 2: Standards and Standard Parts[M]. Beijing: Aviation Industry Press, 2000: 270-272.
[15]邱宣怀. 机械设计[M]. 北京: 高等教育出版社, 1997: 102-103.
QIU Xuanhuai. Machine Design[M]. Beijing: Higher Education Press, 1997: 102-103.
[16]刘向东, 李亚智, 舒怀, 等. 多钉连接钉载分配特性研究方法[J]. 复合材料学报, 2013, 30(1): 210-217.
LIU Xiangdong, LI Yazhi, SHU Huai, et al. Experimental and Numerical Study on the Pin-load Distribution of Multiple-bolted Joints[J]. Acta Materiae Compositae Sinica, 2013, 30(1): 210-217.
[17]石亦平, 周玉蓉. ABAQUS有限元分析实例详解[M]. 北京: 机械工业出版社, 2006: 304-316.
SHI Yiping, ZHOU Yurong. ABAQUSAnalysis and Examples[M]. Beijing: China Machine Press, 2006: 304-316.