摘要
针对核电厂钢板赤铁矿混凝土结构中栓钉抗剪性能的研究,进行了9个栓钉推出试验,同时采用Abaqus对其进行有限元分析,探讨了试件在C50普通混凝土和C50赤铁矿混凝土中破坏模式的区别、栓钉极限抗剪承载力、荷载-滑移曲线.分析了栓钉直径、栓钉长径比、栓钉屈服强度和赤铁矿混凝土强度对栓钉抗剪承载力的影响.研究结果表明:试验中以栓钉根部被剪断为主要破坏模式;栓钉在赤铁矿混凝土内的抗剪滑移量均小于6mm,具有脆性破坏特征.随着栓钉直径、栓钉屈服强度和赤铁矿混凝土强度的增加,其抗剪承载力均有所提高;栓钉长径比大于8时,其对抗剪承载力影响不大.进一步提出了栓钉在C50赤铁矿混凝土内抗剪承载力和荷载-滑移曲线,所提曲线与试验值和有限元值均吻合良好.
Nine stud push-out tests are carried out in this paper,for the research on the resistance of the studs in the steel plate hematite concrete structure of nuclear power plants,the finite element analysis is carried out on the Abaqus at the same time.The difference between the failure modes of the specimens in C50 ordinary concrete and C50 hematite concrete,the ultimate shear capacity of the stud,and the load-slip curve are discussed.The influence of stud diameter,stud length-to-diameter ratio,stud yield strength and hematite concrete strength on the shear capacity of studs is analyzed.The research results show that the main failure mode is the shearing of the root of the stud in the test;the shear slip of the stud in the hematite concrete is less than 6 mm,which has the characteristics of brittle failure.With the increase of stud diameter,stud yield strength and hematite concrete strength,its shear resistance capacity increases;when the stud length-to-diameter ratio is greater than 8,its shear resistance capacity has little effect.The shear capacity and load-slip curve of studs in C50 hematite concrete are further proposed,and the curves mentioned are in good agreement with the experimental values and finite element values.
作者
张有佳
王子彦
李小军
王晓辉
高爱平
于跃
沈亮
路翎
ZHANG Youjia;WANG Ziyan;LI Xiaojun;WANG Xiaohui;GAO Aiping;YU Yue;SHEN Liang;LU Ling(School of Civil Engineering and Architecture,Northeast Electric Power University,Jilin 132012,China;The College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China;Institute of Geophysics,China Earthquake Administration,Beijing 100081,China;China Nuclear Power Engineering Co.,Ltd.,Beijing 100840,China;Economic&Technology Research Institute,State Grid Shandong Electric Power Company,Jinan 250000,China)
出处
《应用基础与工程科学学报》
EI
CSCD
北大核心
2022年第5期1201-1215,共15页
Journal of Basic Science and Engineering
基金
国家自然科学基金项目(51508074,51421005)
