Multi-level test study on carbon fiber reinforcement of truss type high-rise structures

CUI Rong; GAO Weijian; NIU Yinjie; ZHANG Xiaowen

doi:10.16579/j.issn.1001.9669.2026.03.016

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Multi-level test study on carbon fiber reinforcement of truss type high-rise structures

·Experimental Research·Testing Technology· | 更新时间：2026-03-16

- Multi-level test study on carbon fiber reinforcement of truss type high-rise structures
- Journal of Mechanical Strength Vol. 48, Issue 3, Pages: 145-151(2026)
- 作者机构：
  
  1.中国铁塔股份有限公司甘肃省分公司，兰州 730000
  2.沈阳飞机设计研究所，沈阳 110066
  3.北京石油化工学院新材料与化工学院，北京 102627
  4.大连宇晨高新材料科技有限公司，大连 116023
- 作者简介：
  
  ZHANG Xiaowen, E-mail: zhangxwdut@163.com
- 基金信息：
  
  National Key R&D Program Intergovernmental International Science and Technology Innovation Cooperation Special Project(2021YFE0115400);Gansu Province Enterprise R&D Institution Capacity Building Special Project(23CXJA0005)
- DOI：10.16579/j.issn.1001.9669.2026.03.016
  CLC： TB332;O348
- Received：01 April 2025，
  
  Revised：2025-04-29，
  
  Published：15 March 2026
- 稿件说明：
移动端阅览
崔融，高维健，牛荫杰，等. 桁架型高耸结构碳纤维加固的多层级试验研究［J］. 机械强度，2026，48（3）：145-151.

CUI Rong，GAO Weijian，NIU Yinjie，et al. Multi-level test study on carbon fiber reinforcement of truss type high-rise structures［J］.Journal of Mechanical Strength，2026，48（3）：145-151.
崔融，高维健，牛荫杰，等. 桁架型高耸结构碳纤维加固的多层级试验研究［J］. 机械强度，2026，48（3）：145-151. DOI： 10.16579/j.issn.1001.9669.2026.03.016.

CUI Rong，GAO Weijian，NIU Yinjie，et al. Multi-level test study on carbon fiber reinforcement of truss type high-rise structures［J］.Journal of Mechanical Strength，2026，48（3）：145-151. DOI： 10.16579/j.issn.1001.9669.2026.03.016.

摘要

目的

针对桁架型高耸结构在长期服役中因材料老化、动态荷载及极端环境导致的稳定性劣化问题，系统评估碳纤维加固工艺的增强效应。

方法

建立了“材料-部件-整体”多层级试验方法。在材料级测试界面，进行黏接性能及复材板性能的测试；在部件级对加固前、后的L形截面梁及连接节段进行四点弯曲试验，验证局部加固效果；在整体级通过拉力试验对甘肃兰州某25 m高通信塔进行实地测试，分析主承力部件应变与顶端位移。

结果

试验结果表明，材料级砂纸打磨使钢/碳纤维粘接剪切强度提升29.98%，优于喷砂和激光处理；部件级加固后L形梁及节点的屈服载荷提升15%以上，局部应变降低65%~75%；整体级主承力部件应变降低28.52%，顶端位移减少15.58%。所提加固工艺显著改善了结构刚度与强度，为工程应用提供了优化依据。

Abstract

Objective

To address the issue of stability degradation in truss type high-rise structures caused by material aging

dynamic loads

and extreme environments

this study systematically evaluates the enhancement effects of carbon fiber reinforcement techniques.

Methods

A multi-level test approach encompassing “material-component-structure” was employed. In material-level tests

the bonding shear strength and composite properties were measured. In component-level tests

four-point bending experiments were conducted on L-shaped beams and joints to verify the overall reinforcement effect. Finally

tensile testing was applied to a full-scale 25 m truss structure test to analyze the strain and top displacement of the main load-bearing components.

Results

The results demonstrate that sandpaper grinding increases the bonding shear strength by 29.98% at the material level. At the component level

the yield load of reinforced beams improves by over 15%

while local strain decreases by 65% to 75%. At the structural level

the strain in primary components decreases by 28.52% and the top displacement is reduced by 15.58%

indicating significant improvements in structural stiffness and strength.

关键词

Keywords

references

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