地震-滑坡涌浪叠加下高拱坝动力响应与损伤研究

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关键词：地震-滑坡涌浪耦合；高拱坝；动力响应；连续损伤模型中图分类号：X171.1 文献标志码：A doi：10.3969/j.issn.1000-1379.2025.07.005引用格式：，，.地震-滑坡涌浪叠加下高拱坝动力响应与损伤研究[J].人民黄河，2025，47（7）：28-34.

Study on Dynamic Response and Damage of High Arch Dam Under Earthquake-Landslide Surge Superposition

GUO Jinjun，ZHOU Pizhi，HU Shaowei

（School of Water Conservancy and Transportation，Zhengzhou University，Zhengzhou 45Ooo1，China）

Abstract：Strongearthquakeswillgreatlyducethstabiltoftheresevorslopeadasiliducelandldegeologicaldisastesheuperpositionofearthquakeandlandslidesurgeloadgreatlytreatens thesafetyofthedambody.Inordertoexplore thedynamicresponseand damageevoutionofhigachdmundertesuperpositioofartquake-landslidesurgethispapertokaighchdmasteet，uilt afinefiniteeementodel，eterndecaluatomodeloftquake-ladslideugeload，ndaalydteodalatiois placementresponsecharacteriticsnddamageevolutiontrendofarchdamundermultipleworkingcondtions.Theresultsshowthatthehydrodynamic added mass significantly reduces the wet modal frequency of the arch dam by 1 8%-23% ，and the high-order vibration modes change significantly. When the earthquake and surge are superimposed， the peak displacement Rd of the midpoint of the vault is positively corelatedwithtepakacelerationoftearthquakeandtemaximumsurgeeightWhenthepeakaceleratioof teearthquakeincreases from 0.2g to 0.6g ， Rd increases by 89.7% . The maximum displacement time under different working conditions is affcted by many factors.Thedamagedegreeofdambodyvariesgreatlyunderdiferentworkingconditions.Thedamageofupstreamsurfaceissensitivetothe change of surge height. When the surge height is different by 40m ，the weighted damage area ratio of upstream surface to RUWA changes by （204 27.1% .From conditionone to condition three，the weighted damage area ratio of cantilever surface is increased from 9.99 % to 25.76% compared with RFWA ，and thedam body haspenetrating cracks.The damage dissipation energy increasessharply with the increase of load strength.

Key words： earthquake-landslide surge coupling; high arch dam； dynamic response ; continuum damage model

0 引言

高拱坝是水利工程中关键水工建筑物，其结构安全性与服役可靠性直接影响下游区域人民生命财产安全及流域生态环境稳定性。（剩余9859字）