Multi-level test study on carbon fiber reinforcement of truss type high-rise structures
CUI Rong
GAO Weijian
NIU Yinjie
ZHANG Xiaowen
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.
Keywords：Carbon fiber composite materialTruss type high-rise structureMechanical testMulti-level testingUltimate strength
Publication Date：2026-03-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 145-151 )