基于杆件荷载的加固角钢塔风荷载体型系数研究  

Research on Wind Load Shape Coefficient for Angle Steel Reinforced Tower Based on Member Loads

作　　者：陈洋洋 王振华 冯佳明 简于姣 周琦 沈哲宇 Chen Yangyang;Wang Zhenhua;Feng Jiaming;Jian Yujiao;Zhou Qi;Shen Zheyu(College of Urban Construction,Zhejiang Shuren University,Hangzhou 310015,China)

机构地区：[1]浙江树人学院城建学院,杭州310015

出　　处：《特种结构》2024年第6期63-67,75,共6页Special Structures

基　　金：浙江树人学院引进人才科研启动项目(2022R051);浙江树人学院大学生创新创业训练计划项目(JXJ0223105)。

摘　　要：为了研究加固角钢塔风荷载体型系数,介绍了常用的角钢加固截面形式,采用CFD方法模拟了各种角钢加固截面在二维流下的体型系数,并与相关规范取值进行比较,详细探讨了日本JEC规范中基于杆件荷载的体型系数计算方法。以一加固角钢塔段为算例,基于加固截面体型系数的数值模拟结果,采用JEC经验公式和数值模拟两种方法计算了各种角钢主材加固截面形式的体型系数,并与未加固角钢塔段的体型系数进行比较。结果表明:与角钢塔体型系数相比,箱形加固截面的塔段体型系数略为增大1%,其他角钢加固截面的塔段体型系数减小2%~18%;采用JEC经验公式计算的塔段体型系数比数值模拟方法大2%~15%。相关计算结果可为角钢输电塔加固的风荷载计算提供参考。To study the wind load shape coefficient of angle steel reinforced transmission towers,the commonly used forms of angle steel reinforced sections are introduced.In this paper,the Computational Fluid Dynamics(CFD)method is used to simulate the shape coefficients of various angle steel reinforced sections under two-dimensional flow fields,and the results are compared with the values specified in relevant codes.The calculation method of shape coefficients based on member loads in the Japanese JEC standard is also discussed in detail.Using an angle steel reinforced transmission tower section as a case study,the shape coefficients of various reinforced section forms are calculated using both the JEC empirical formula and numerical simulation methods.The results are then compared with the shape coefficient of the unreinforced tower section.The results indicated that,compared to the shape coefficient of the angle steel towers,the shape coefficient of the box-shaped reinforced tower section increased by 1%,while the shape coefficients of the other angle reinforced tower section decreased by 2%to 18%.Additionally,the shape coefficient calculated using the JEC empirical formula is 2%to 15%higher than that obtained from the numerical simulation method.This study provides references for the wind load calculation of angle steel reinforced transmission towers.

关 键 词：杆件荷载 加固角钢塔 角钢加固截面 风荷载 体型系数 

分 类 号：TU359[建筑科学—结构工程] TU392