煤灰渣混凝土梁柱節(jié)點抗震性能研究

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中圖分類號：TU375.4 文獻標識碼：A DOI：10.7535/hbkd.2025yx04010

Seismic performance of coal ash slag concrete beam-column joints

WEI Jiaqi1，ZHANG Mingqian1，WANG Zhuo1，MA Kang1，YUHaifeng 1 ，F(xiàn)ENG Y LI Huawei2，NIE Qingke2，CAO Kangjia1

（1.School of Civil Engineering，Hebei Universityof Science and Technology，Shijiazhuang，Hebei O5oo18，China; 2.Research Center for Geotechnical Engineering Technology of Hebei Province/Key Laboratory for Industrial Solid Waste Comprehensive Utilization of Hebei Province，China Hebei Construction &. Geotechnical Investigation Group Limited，Shijiazhuang，Hebei O50227，China）

Abstract：Toivestigate the high-valueand high-dose utilizationofsolid waste gasification ashinconcretecomponents，lowcyclereciprocating loading tests were performedonjoints within one ordinary concrete and threegasifiedash concrete beamcolumn oints.The failure modes，hystereticbehavior，energydisipation，ductityand stiffessdegradation were studied. The failure mechanisms of concrete jointswithcoal ashasanadmixture wereexplored，and theefectsof dosage，axial compressionratio，as wellasconcrete strengthon the seismic performanceof thesejoints were analyzed.Theresults reveal thatplastic hinge failureatthebeamendsoccurs inallofthecoalashslagconcrete joints.During thisprocess，the reinforcement yieldsand theconcreteis crushed，which includes fourstages：initialcracking，extensivecracking，ultimate strength andfailure.The hysteresis curves of the specimens are relatively full.When the dosage ratioofcoalash slagis 20% ， the bearing capacity of joints made with coal ash slag concrete increases by 14% compared to those made with ordinary concrete.Using properdesignedcoalashslagconcretecanimprovethebearingcapacitywhileconserving cement，andlowering carbonemisions inconcrete，which providessomereferencefortheargescaleandhigh-valueutilizationofsolidwastecoalash in concrete engineering.

Keywords：concreteand reinforced concrete structures；coal gasificationash residue；quasi-static test；axial compresior ratio；seismic performance；bearing capacity

煤灰渣是由多種化學組分構成的復雜體系，其中 SiO2?Al2O3?CaO?Fe2O3 是煤灰渣中的主要成分，質量分數的總和通常在 80% 以上[1]。（剩余12762字）