摘要
为了研究分析承插型盘扣式钢管支架在不同搭设参数时的承载性能的变化规律。依托于实际工程,采用MidasGen有限元分析软件计算分析了该承插型盘扣式钢管支架的位移和应力变化;通过对实体钢管支架预加载,监测获取各个测点的位移,并与模拟结果作比较分析,验证承插型盘扣式钢管支架结构的安全性以及有限元分析参数设置的合理性。在此基础上,重点探讨了抗弯刚度、高宽比2个主要设计参数对承插型盘扣式钢管支架的承载性能影响。结果表明:节点抗弯刚度增加,架体的稳定性越好,步数对节点抗弯刚度和支架的整体稳定性之间的规律影响明显;当高宽比大于3时,支架的稳定承载力减幅明显,降低20%左右,并得出承插型盘扣式钢管支架的不同高度不同高宽比下的立杆计算长度附加系数取值。
In order to study and analyze the variation law of the bearing performance of the socket type buckle type steel pipe support under different installation parameters.Based on actual engineering,the displacement and stress changes of the socket type buckle type steel pipe support were calculated and analyzed using Midas Gen finite element analysis software;By preloading the solid steel pipe support,monitoring and obtaining the displacement of each measuring point,and comparing it with simulation results,the safety of the socket type buckle type steel pipe support structure and the rationality of the finite element analysis parameter settings are verified.On this basis,the impact of two main design parameters,namely bending stiffness and aspect ratio,on the load-bearing performance of the socket type buckle type steel pipe support was mainly explored.The results show that as the bending stiffness of the node increases,the stability of the bracket becomes better,and the number of steps has a significant impact on the relationship between the bending stiffness of the node and the overall stability of the bracket;When the aspect ratio is greater than 3,the stable bearing capacity of the bracket decreases significantly,by about 20%,and the additional coefficient values for the calculated length of the upright pole under different heights and aspect ratios of the socket type buckle type steel pipe bracket are obtained.
作者
李红佳
李涛
LI Hongjia;LI Tao(Xi'an Traffic Engineering Institute,Xi'an Shaanxi,710300,China)
出处
《西安交通工程学院学术研究》
2024年第1期30-35,23,共7页
Academic Research of Xi'an Traffic Engineering Institute
关键词
承插型盘扣式
稳定承载力
有限元分析
设计参数
socket type buckle type
stable bearing capacity
finite element analysis
design parameters
