摘要
为了提出更符合实际情况的模型计算方法,降低支架失稳倒塌造成的人员伤亡和财产损失。文中运用动力学方法进行支架体系的稳定分析,证明了动力学振动分析法运用于支架体系的可行性,并通过这个方法得到了支架立杆的失稳曲线方程,对于支架失稳位移的监测研究可以提供一种思路;通过对已有文献进行研究,说明了支架节点不能只考虑一种约束的情况并对已有的模型进行优化,得到了考虑节点转动和位移约束的模型计算方法。结果表明有角弹簧的计算模型与无角弹簧相比能很好的拟合试验结果。
A calculation model is proposed to reduce the casualties and property losses caused by the instability and collapse of the support. The feasibility of applying the dynamic vibration method to analyze the support system is verified, and the instability curve of the support vertical rod is obtained, providing the reference for monitoring the displacement of the support. By reviewing the existing publications, it is summarized that more than one constraint form of the support joint should be considered. The existing calculation model is optimized by considering the joint rotation and displacement constraints. The results show that the model of angular spring can fit the experimental results better than that of non angular spring.
作者
王雪鉴
王毅恒
孙新坡
WANG Xuejian;WANG Yiheng;SUN Xinpo(College of Architectural and Engineering,Sichuan University of Science&Engineering,Sichuan Zigong 643000,China)
出处
《低温建筑技术》
2022年第8期46-50,共5页
Low Temperature Architecture Technology
基金
国家自然科学基金资助项目(41472325)
四川省科技厅重点项目(20YYJC1188)
四川省大学生创新创业训练项目(cx2021164,cx2022162)。
关键词
压杆稳定
弹簧刚度
动力分析
位移监测
连续压杆
strut stability
spring stiffness
dynamic analysis
displacement monitoring
continuous press pole
