考虑残余强度影响的输电线路装配式锚杆基础有限元仿真分析  

Finite Element Simulation Analysis of Prefabricated Anchor Foundation Considering Residual Strength

作　　者：邓长征[1] 胡鑫 阎晓铭 DENG Changzheng;HU Xin;YAN Xiaoming(College of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443002,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《电工材料》2024年第2期66-73,共8页Electrical Engineering Materials

基　　金：湖北省教育厅科学技术研究计划中青年人才项目(Q20151205)。

摘　　要：针对现有装配式基础仿真的不足,以新型装配式锚杆基础为对象,进行ABAQUS有限元仿真计算。对材料本构、荷载施加方式、接触行为加以改进,提出了一种可有效反映出在考虑残余强度影响的情况下,装配式锚杆基础的承载能力和各部件的受力情况的有限元建模方法。仿真结果表明,该方法能有效地反映接触界面损伤后仍存在的残余剪切强度特征,且基础整体受力变化过程符合实际工况,证明了建模方法的合理性和正确性,为装配式锚杆基础和相似结构设计、施工提供可靠有效的依据。To improve the shortcomings of the existing anchor rod foundation,a new type of prefabricated anchor rod foundation was designed by optimizing the combination of the traditional prefabricated tower foundation and anchor rod foundation and improving the original foundation.In order to explore the mechanical characteristics of the prefabricated anchor rod foundation and further verify the feasibility of the foundation,finite element simulation calculation was carried out with ABAQUS,and a finite element modeling method was proposed that could effectively reflect the bearing capacity of the prefabricated anchor rod foundation and the stress of each component under the consideration of the influence of residual strength from the perspective of material constitutive structure,load application mode and contact behavior.Moreover,based on the actual test data,the single anchor simulation comparative analysis and the overall foundation stress analysis were carried out,and the stress changes of the contact surface under the action of uplift force,the whole process of the load affected by the prefabricated anchor rod foundation and the stress conditions of each component were obtained,which proved the rationality and correctness of the modeling method.It provides a reliable and effective basis for the design and construction of prefabricated anchor foundation and similar structures.

关 键 词：装配式锚杆基础 ABAQUS 粘结接触 残余强度 

分 类 号：TU472[建筑科学—结构工程]