长沙理工大学学报（自然科学版）2025，Vol.22Issue(1)：1-14,14.DOI:10.19951/j.cnki.1672-9331.20240317001
铰接型装配式锚杆框架梁受力变形特性研究
Stress-induced deformation characteristics of a hinged prefabricated anchor frame beam
摘要
Abstract
[Purposes]An internal force calculation method for hinged prefabricated anchor frame beams was proposed,providing a theoretical basis for the design of a hinged frame beam.[Methods]Firstly,the stress model of the frame beam was simplified into a multi-stage Winkler elastic foundation beam connected by hinged points.Then,based on the boundary and continuity conditions of the beam,the analytical solution of the internal force of the beam was obtained.The stress and deformation characteristics of the hinged frame beam structure and the existing cast-in-situ frame beam structure were analyzed by numerical examples,as well as the stress-induced deformation characteristics of the hinged frame beam structure under different anchorage forces,foundation reaction coefficient,section size,cantilever length and hinged position.Finally,the accuracy of the calculation results in this paper was verified by comparing the actual monitoring data with the theoretical calculation results in this paper.[Findings]The rationality of the internal force analytical solution is verified by comparing the degradation of the obtained solution with the existing one.When other parameters are the same,a larger anchorage force means a larger cantilever length and larger distance from the hinged position to the anchorage point,resulting in a larger maximum bending moment value of the hinged structure.The foundation reaction coefficient and section size have a significant effect on the bottom displacement and rotation angle of the frame beam structure.As the foundation reaction coefficient and section size increase,the bottom displacement and rotation angle decrease,while the bending moment and shear force are basically unchanged.Through the analysis of field monitoring data,the field measurement results are consistent with the trend of internal force calculation results in this paper.[Conclusions]The analytical results of the internal force of hinged frame beams are reasonable,and the law of stress-induced deformation can provide a reference for the design of hinged frame beams.关键词
铰接型装配式锚杆框架梁/Winkler弹性地基梁/内力计算/受力变形特性/结构设计Key words
hinged prefabricated anchor frame beam/Winkler elastic foundation beam/internal force calculation/stress-induced deformation characteristics/structural design分类
交通运输引用本文复制引用
张军辉,周书胤,张石平,黎峰..铰接型装配式锚杆框架梁受力变形特性研究[J].长沙理工大学学报（自然科学版）,2025,22(1):1-14,14.基金项目
国家杰出青年科学基金项目(52025085) （52025085）
科技部国家重点研发计划项目(2021YFB2600903) （2021YFB2600903）
国家自然科学基金重点项目(52338009) Project(52025085)supported by the National Science Foundation for Distinguished Young Scholars of China （52338009）
Project(2021YFB2600903)supported by National Key R&D Program of the Ministry of Science and Technology of China （2021YFB2600903）
Project(52338009)supported by Key Project of the National Natural Science Foundation of China （52338009）
