钢筋混凝土框架-核心筒结构在地震作用下的倒塌模拟
首发时间:2015-03-19
摘要:结构在地震下倒塌是造成地震灾害的主要原因之一。为研究钢筋混凝土框架-核心筒结构在地震作用下的抗倒塌性能,本文采用显式有限单元软件LS-DYNA,对一个7 层的钢筋混凝土框架-核心筒试验进行了数值模拟。建立了用于梁、柱分析的纤维梁单元模型和用于墙、板分析的分层壳模型,完成了试验结构从开始受力到倒塌在内的全过程分析。数值分析结果与试验结果符合良好,说明了该模型在用于分析结构在地震作用下倒塌行为的准确性与高效性。根据试验和数值分析结果,本文对该类结构抗倒塌设计提出了一些建议。
关键词: 结构工程 钢筋混凝土框架-核心筒结构 纤维梁单元 分层壳单元 倒塌模拟 显式分析
For information in English, please click here
Collapse simulation of RC frame-core tube structures under earthquake
Abstract:Structure collapse is one of the main reason causing earthquake disasters. To study the collapse resistance ability of reinforced concrete frame-core tube structure under earthquakes, a 7 story reinforced concrete frame-core tube finite element model is established in LS-DYNA, a explicit finite element software. Fiber beam model for RC beam and column and a multilayer shell model for RC slab and wall is also established. The numerical simulation is full-range analysis from the beginning to collapse of the structure. The results of numerical analysis are in good agreement with the experimental results, which shows that the model used in the analysis can simulate collapse behavior of the structure under earthquake with accuracy and efficiency. Suggestions on collapse resistant design of these kinds are raised based on experiment and numerical analysis.
Keywords: structural engineering RC frame-core tube structure fiber beam model multi-layer shell element collapse simulation explicit analysis
基金:
论文图表:
引用
No.4633359103518714****
同行评议
勘误表
钢筋混凝土框架-核心筒结构在地震作用下的倒塌模拟
评论
全部评论0/1000