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玻璃纤维增强聚丙烯树脂复合材料索锚构件设计及力学性能

李承高 张玉潭 呼思乐 吉启康 郭正岳 孙瑜泽 咸贵军

李承高, 张玉潭, 呼思乐, 等. 玻璃纤维增强聚丙烯树脂复合材料索锚构件设计及力学性能[J]. 复合材料学报, 2022, 40(0): 1-11
引用本文: 李承高, 张玉潭, 呼思乐, 等. 玻璃纤维增强聚丙烯树脂复合材料索锚构件设计及力学性能[J]. 复合材料学报, 2022, 40(0): 1-11
Chenggao LI, Yutan ZHANG, Sile HU, Qikang JI, Zhengyue GUO, Yuze SUN, Guijun XIAN. Design and mechanical properties of glass fiber reinforced polypropylene polymer composite cable-anchor component[J]. Acta Materiae Compositae Sinica.
Citation: Chenggao LI, Yutan ZHANG, Sile HU, Qikang JI, Zhengyue GUO, Yuze SUN, Guijun XIAN. Design and mechanical properties of glass fiber reinforced polypropylene polymer composite cable-anchor component[J]. Acta Materiae Compositae Sinica.

玻璃纤维增强聚丙烯树脂复合材料索锚构件设计及力学性能

基金项目: 国家自然科学基金(52008137);黑龙江省自然科学基金(LH2021E073)
详细信息
    作者简介:

    李承高,等:碳/玻璃纤维混杂复合材料在水浸泡环境下的性能演化研究

    通讯作者:

    咸贵军,博士,教授,博士生导师,研究方向为土木工程纤维增强树脂复合材料与结构  E-mail: gjxian@hit.edu.cn

  • 中图分类号: TB332

Design and mechanical properties of glass fiber reinforced polypropylene polymer composite cable-anchor component

  • 摘要: 桥梁拉索及预应力混凝土结构用纤维增强复合材料的可靠锚固是需要解决的关键难题。热塑性聚丙烯树脂具有优异的断裂韧性、耐湿热/抗疲劳性能以及加工成型方便和可回收利用等优点,根据其加热熔化冷却成型原理,采用玻璃纤维增强聚丙烯预浸带制备了一种尺寸稳定、性能优异、具有自锁结构的复合材料索锚构件。采用拉伸测试及有限元模拟研究预浸带层数与圆弧段角度对索锚结构极限承载力、应力分布及破坏模式的影响。研究发现,索锚构件的极限承载力随圆弧段角度增加而降低,随缠绕层增加先增加后下降。有限元模拟与实验结果吻合性较好,验证了缠绕10层预浸带,圆弧段角度13.5°的索锚构件应力分布均匀并取得最优异的拉伸性能。最后,通过总结与分析,论证了一体化新型索锚构件在桥梁拉索、地锚结构及预应力混凝土结构中的应用前景。

     

  • 图  1  玻璃纤维增强聚丙烯树脂预浸带

    Figure  1.  Glass fiber reinforced polypropylene resin prepreg tape

    图  2  索锚构件模具设计示意图

    Figure  2.  Schematic diagram of mould design for the cable-anchor component

    1—Transverse bolt hole to adjust the plate spacing; 2—Slide plate; 3—Bearing base; 4—Cylindrical steel column; 5—Semicircle steel piece for side constraints; 6—Glass fiber reinforced polypropylene prepreg tape; 7—Steel sliding groove; 8—Steel girder to adjust the steel plate distance; 9—Vertical bolt hole to fix steel girder; 10—Bolt holes to apply displacement constraint; 11—Steel wedge; 12—Bolt holes to fix the cylinder

    图  3  索锚构件设计参数及尺寸

    Figure  3.  Design parameter and size of cable-anchor component

    图  4  玻璃纤维增强聚丙烯树脂索锚构件的制备过程

    Figure  4.  Preparation process of glass fiber reinforced polypropylene resin cable-anchor component

    图  5  索锚构件拉伸测试用连接装置

    Figure  5.  Connecting device for tensile testing of cable-anchor component

    图  6  索锚构件拉伸测试的应变监测位置

    Figure  6.  Strain monitoring position for tensile testing of cable-anchor component

    图  7  索锚构件的拉伸性能测试

    Figure  7.  Tensile properties test of cable-anchor component

    图  8  索锚构件的有限元模型

    Figure  8.  Finite element model of cable-anchor component

    图  9  弧段角度对玻璃纤维增强聚丙烯树脂索锚构件拉伸荷载-位移曲线的影响

    Figure  9.  Effect of arc angle on tensile load-displacement curve of glass fiber reinforced polypropylene cable-anchor component

    图  10  10层3#玻璃纤维增强聚丙烯树脂索锚构件的拉伸破坏模式

    Figure  10.  Tensile failure mode of glass fiber reinforced polypropylene cable-anchor component for 10-3#

    图  11  缠绕层数对玻璃纤维增强聚丙烯树脂索锚构件拉伸荷载-位移曲线的影响

    Figure  11.  Effect of winding layer number on tensile load-displacement curve of glass fiber reinforced polypropylene cable-anchor component

    图  12  10层3#玻璃纤维增强聚丙烯树脂索锚构件的拉伸应变分布

    Figure  12.  Tensile strain distribution of glass fiber reinforced polypropylene cable-anchor component for 10-3#

    图  13  5-3#玻璃纤维增强聚丙烯树脂索锚构件圆弧段的应力云图

    Figure  13.  Colored stress patterns of arc segment for glass fiber reinforced polypropylene cable-anchor component of 5-3#

    图  14  5-3#玻璃纤维增强聚丙烯树脂索锚构件圆弧-直段过渡区域的应力云图

    Figure  14.  Colored stress patterns of arc-straight transition segment for glass fiber reinforced polypropylene cable-anchor component of 5-3#

    表  1  弧段角度对玻璃纤维增强聚丙烯树脂索锚构件拉伸性能的影响

    Table  1.   Effect of arc angle on tensile properties of glass fiber reinforced polypropylene cable-anchor component

    Sample numberUltimate bearing capacity/kNTensile strength/
    MPa
    Anchorage efficiency/%
    10-1#36.05400.676.4
    10-2#42.32470.289.7
    10-3#49.65551.7105.3
    Notes: 10-1# denotes that the number of winding layers of the prepreg tape is 10 layers, and the arc angle number is 1#, which is 21.8 o. Other conditions are similar. 2#-16.7 o, 3#-13.5 o.
    下载: 导出CSV

    表  2  缠绕层数对玻璃纤维增强聚丙烯树脂索锚构件拉伸性能的影响

    Table  2.   Effect of winding layer number on tensile properties of glass fiber reinforced polypropylene cable-anchor component

    Sample numberUltimate bearing capacity/kNTensile strength/
    MPa
    Anchorage efficiency/%
    5-3#24.20537.8102.6
    10-3#49.65551.7105.3
    20-3#45.44252.448.2
    下载: 导出CSV

    表  3  玻璃纤维增强聚丙烯树脂索锚构件不同监测位置的极限应变

    Table  3.   Ultimate strain of glass fiber reinforced polypropylene cable-anchor component at different monitoring positions

    PositionMaximum tensile strain/10-6Strain ratio to position 1/%
    118327100
    21523783.1
    312967.1
    41740395.0
    5995854.3
    下载: 导出CSV
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  • 收稿日期:  2021-12-21
  • 录用日期:  2022-01-24
  • 修回日期:  2022-01-24
  • 网络出版日期:  2022-02-21

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