基于向量式有限元的非结构构件突加荷载响应及影响因素模拟分析  

Simulation Analysis of Sudden Loading Response and Influence Factors of Non-Structural Element Based on VFIFE

作　　者：吴泽含 章红梅[1] WU Zehan;ZHANG Hongmei(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou,310058)

机构地区：[1]浙江大学建筑工程学院,杭州310058

出　　处：《结构工程师》2022年第6期63-74,共12页Structural Engineers

基　　金：浙江省自然科学基金项目(LZ22E080005)。

摘　　要：向量式有限元方法自提出以来在大变形、不连续问题的求解中显示出了优异的预测效果。本文针对建筑结构中一种主要非结构构件——大型悬挂吊灯在近断层地震作用下的响应还未得到重视的问题,应用向量式有限元对具有多重质量的大型吊灯在突加荷载的作用下的模拟方法以及响应的影响因素进行了分析。主要探究了不同的突加荷载模式、不同的阻尼比对于大型吊灯振动的影响。分析结果表明,加载模式影响结构的运动轨迹,阻尼比的变化会影响结构振动到达平衡位置的速度。上述研究可为结构中大型非结构构件的设计与分析提供参考。With the application of vector form intrinsic finite element method, it shows excellent prediction results for large deformation and non-continuous problems. Aiming at the near fault response of the main nonstructural member-large suspended chandelier, which is not getting the attention it deserves. In this paper, the vector form intrinsic finite element method is used to analyze the influence of simulation parameters on the response of multi-mass large suspended chandelier under sudden loading. The effects of different sudden loading modes and damping ratios on the vibration of multi-mass large suspended chandelier are discussed.The results show that the loading mode affects trajectory of the structure, and the change of damping ratio affects the speed of the structure vibration to the equilibrium position. This research can provide a reference for practical design and application of multi-mass large suspended chandeliers.

关 键 词：大型悬挂吊灯 向量式有限元 突加荷载 结构响应 

分 类 号：TU311.3[建筑科学—结构工程]