装配式风电混塔胶黏拼缝的内聚力本构模型及塔筒承载力研究  

Research on cohesive zone constitutive model of adhesive joint in prefabricated wind turbine hybrid tower and the bearing capacity of tower

作　　者：黄赐荣 张栋梁 付坤 李天昊 何澜 章家炜 HUANG Cirong;ZHANG Dongliang;FU Kun;LI Tianhao;HE Lan;ZHANG Jiawei(Power China Huadong Engineering Corporation,Hangzhou 311122,China;Zhejiang Huadong Xinneng Technology Co.,Ltd.,Hangzhou 311121,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,杭州311122 [2]浙江华东新能科技有限公司,杭州311121

出　　处：《振动与冲击》2025年第4期71-81,共11页Journal of Vibration and Shock

基　　金：中国博士后科学基金(2023M733316)。

摘　　要：为了探究装配式风电混塔胶黏拼缝的黏结性能以及塔筒整体的承载力,开展了混凝土-结构胶黏结界面的法向拉伸和切向剪切试验。针对混凝土黏结界面位置的裂纹开展以及破坏模式进行了详细考察,明确了黏结界面的法向以及切向的内聚力本构模型。基于试验得到的内聚力本构模型建立了6节段的装配式风电混塔简化模型,开展了装配式塔筒在纯扭及弯扭荷载工况下的承载能力研究,探究了竖缝结构胶对于装配式混塔承载力的影响。研究表明:混凝土-结构胶-混凝土黏结试件的剪切破坏模式以黏结界面破坏为主,抗剪性能会弱于混凝土本身;而法向拉伸破坏模式以混凝土基材破坏为主,抗拉性能会强于混凝土本身;通过数值模拟计算结果发现,相比于摩擦接触模型,竖缝内聚力模型(cohesive zone model,CZM)的抗扭承载能力有显著提升,但扭矩持续加载导致竖缝内聚力单元破坏后,其抗扭承载力和摩擦接触模型相近。In order to investigate the bonding performance of adhesive joints in prefabricated wind turbine hybrid towers and the overall bearing capacity of the tower,in this paper normal tensile and tangential shear experiments were conducted on the concrete⁃structural adhesive bonding interface.A detailed investigation was conducted on the crack propagation and failure mode at the bonding interface of concrete,and the normal and tangential cohesive zone constitutive models of the bonding interface were clarified.A simplified model of a 6⁃segments prefabricated wind turbine hybrid tower was established based on the cohesive constitutive zone model obtained from experiments,the bearing capacity of prefabricated towers under pure torsion and bending⁃torsion load cases was studied,the influence of vertical joint structural adhesive on the bearing capacity of prefabricated hybrid tower was explored.The test results show that the shear failure mode of concrete⁃adhesive⁃concrete specimen is mainly the bonding interface failure,and the shear resistance performance will be weaker than that of the concrete itself,and the shear resistance will be weaker than the concrete itself.the tensile failure mode of concrete⁃adhesive⁃concrete specimen is mainly the failure of the concrete itself,and the shear resistance performance will be stronger than that of the concrete itself.Through numerical simulation calculations,it was found that compared to the friction contact model,the cohesive zone model(CZM)model for vertical adhesive joints significantly improved its torsional bearing capacity.But after the continuous loading of torque caused the failure of the vertical adhesive joints,its torsional bearing capacity remained the same as the friction contact model.

关 键 词：陆上风电 装配式 混塔 胶黏拼缝 内聚力模型(CZM) 数学本构模型 抗扭承载力 

分 类 号：TU378[建筑科学—结构工程]