模块化FRP-木组合薄壁中长柱轴压力学性能分析

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中图分类号：TU366.2 文献标志码：A 文章编号：1008-0562（2026）01-0082-08

Analysis of axial compressive performance of modular hybrid FRP-timber thin-walled medium-long columns

CUI Weiqi'， CHANG Cunde1*，WANG Pengjun'， CHANG Xinran² （1.School of Civil Engineering，Shenyang Jianzhu University，Shenyang 110168， China; 2.Liaoning Provincial Transportation Planning and Design Institute Company Limited，Shenyang 110166，China）

Abstract：To investigate the cross-sectional configuration and design method of an innovative modular hybrid FRP-timber （MHFT） thin-walled column for prefabricated buildings，the axial compressive mechanical properties of MHFT thin-walled medium-long columns with diferent design parameters were studied. A finite element modelof MHFT thin-waled medium-long columns Was established to analyze the stress mechanism throughout the entire axial compression proces.The efects ofkey parameters，including the number and fiber orientation of FRP layers，the sectional form of corner modules，and the slenderness ratio，on the axial compression performance were studied.The results show that during loading，the plate and corner modules bear the main load， while FRP exerts an efective lateral confinement effect on the composite columns.With the increase in the number of FRP layersfrom 1 to 2，the bearing capacity increasesby 9.5% ，representing the maximum improvement amplitude.The componentswith fibers laid along ±45∘ exhibit more significant deformation prior to peak load. Slotting of the corner modules fails to improve the bearing capacity and stiffness of the components. Anincrease in slendernessratio leads to an insignificant change in bearing capacity，yet arelatively large slendermess ratio is prone to induce local buckling and thus restricts the development of plasticity.Under axial compression，MHFTcomposite columns can fully utilize the longitudinal bearing capacity of timber and the lateralconfinement effectofFRP，achievinganeficient synergistic bearing performance.Theaxialcompression performance of the components is optimized when the number ofFRP layers is 1-2，the fiber orientation is 0∘/ 90∘ ，the slenderness ratio is less than 18.20， and un-slotted corner modules are adopted.

Keywords：hybrid FRP-timber sections;thin-walled columns；axial compressive performance;cross-sectional configuration; slenderness ratio

0引言

木材凭借其自重轻、强度高、易加工和固碳减排的独特生态属性，在推动建筑行业向绿色、低碳、可持续发展转型中展现出巨大潜力。（剩余13146字）