腐蝕環(huán)境下H型鋼柱局部點(diǎn)蝕對(duì)抗震性能影響分析

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中圖分類號(hào)：TU391.3 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：1005-8249（2025）02-0097-06

DOI：10.19860/j.cnki.issn1005- 8249.2025.02.017

Abstract：Toinvestigate theimpactof localized pittngcorosiononseismicperformanceof steel structures incorrosive environments，fiveH-shaped Q235steelcolumns wereselectedandsubjected to varyingdegresof pitingcorrosionatsame locations.Basedonlowcyclerepeated loading tests，theinfluenceoflocaliedpitingcorrosionatdiferent locationsothe seismic performanceofstelstructures wasevaluated，andtheimpactof piting damageon theloadandenergydissipation capacityof steelcolumnswasanalyzedthroughnumericalsimulation.Theresultsshowthatlocalizedpiting corrosin significantlyreduces thepeak load，stifness，and bearing capacityof steelcolumns.Theseismicperformance degradation caused bypiting inpure bending regions isfar more severethanthatinbending－shearregions.Additionally，piting onthe righthalfofthecross－section leads toagreaterreductioninseismicperformancecompared topitingonthelower half.To addresslocalizedpiting，repair methodssuch assurface treatmentandreinforcement strengtheningareproposed，offering practical references for the maintenance and rehabilitation of steel structures in corrosive environments.

Key words：H-shaped steel column； local pitting corrosion； seismic performance

0 引言

隨著國(guó)家工業(yè)化的迅猛發(fā)展，鋼結(jié)構(gòu)憑借輕質(zhì)高強(qiáng)、抗震性能好、施工速度快、可回收利用等優(yōu)勢(shì)，已廣泛應(yīng)用于建筑領(lǐng)域[1。（剩余6298字）