建筑钢结构进展2025，Vol.27Issue(2)：45-53,63,10.DOI:10.13969/j.jzgjgjz.20230918002
新型装配式可调电缆支架承载力特性及设计方法研究
Bearing Capacity Characteristics and Design Method of a New Type of Assembled Adjustable Cable Support
摘要
Abstract
A new type of assembled adjustable cable support was proposed to address the issues of installation difficulties and diverse forms of circular tunnel cable supports.The bearing capacity characteristics and design methods of this new support were investigated.This support can achieve precise adjustment of the angle,making it suitable for different angle support surfaces of circular tunnels.Compared to traditional cable supports,the new assembled adjustable cable support has a simple structure,convenient connection,and high construction accuracy.A finite element model of the adjustable cable support was established and validated by experimental results,and numerical simulations were conducted to analyze the deformation characteristics,stress development at typical locations,and key control parameters of bearing capacity.Based on the bearing capacity characteristics of the support system,a theoretical calculation model for its bearing capacity was proposed,along with selection and design methods for main components such as cross arms and diagonal braces.The research results indicate that the new cable support is subjected to reasonable forces and possesses sufficient strength,stiffness,and stable bearing capacity.Under cable loads,the failure modes of the adjustable support are primarily characterized by buckling at the cross arm sliding groove and instability of diagonal braces.The dimensions of the cross arm significantly affect the stiffness and bearing capacity of the support,while the diameters of diagonal braces and horizontal bolt have a relatively minor impact on the elastic stiffness but affect the bearing capacity to some extent.The stress levels at critical locations of the support obtained from the calculation model are in good agreement with the numerical simulation,indicating the usability of the proposed calculation model for guiding the selection and design of main components such as cross arms and diagonal braces in the new support.关键词
装配式支架/可调电缆支架/承载力特性/参数分析/选型设计Key words
assembled support/adjustable cable support/bearing capacity characteristic/parametric analysis/type selection design分类
建筑与水利引用本文复制引用
曾二贤,王思宇,冯衡,黄佩,黄凤华,张大长..新型装配式可调电缆支架承载力特性及设计方法研究[J].建筑钢结构进展,2025,27(2):45-53,63,10.基金项目
中电工程中南电力设计院重点科技项目(40-1A-KY202219-T203),国家自然科学基金(51678293) （40-1A-KY202219-T203）
