基于纤维材料模型的无梁结构推覆分析
|
摘要
本文基于通用有限元程序ABAQUS的用户子材料接口,开发了适用于纤维梁单元的UMAT模型,采用纤维梁单元和UMAT模型对一个典型的8层无梁结构进行了静力弹塑性分析,研究了无梁结构的抗震性能,发现无梁结构在地震作用下楼板容易出现塑性铰,避免了典型框架结构中容易出现"强梁弱柱"的设计误区,在满足合理配筋要求的条件下,无梁结构的抗震性能可以满足规范的要求。
Based on the user defined subroutines of ABAQUS finite element software,a UMAT model is developed to analyze the mechanical behavior of fiber beam elements.Pushover analysis is then carried out to study the seismic behavior of a classical 8-storey slab-column structure using fiber-beam elements and UMAT model.The result shows that slabs tend to reach plastic range earlier than columns for slab-column structures,which protects the whole structure from collapsing and benefits the seismic property.Structure properties of slab-column structures with proper amount of reinforcement can satisfy the earthquake resistant demand specified by China's seismic codes and standards.
Based on the user defined subroutines of ABAQUS finite element software,a UMAT model is developed to analyze the mechanical behavior of fiber beam elements.Pushover analysis is then carried out to study the seismic behavior of a classical 8-storey slab-column structure using fiber-beam elements and UMAT model.The result shows that slabs tend to reach plastic range earlier than columns for slab-column structures,which protects the whole structure from collapsing and benefits the seismic property.Structure properties of slab-column structures with proper amount of reinforcement can satisfy the earthquake resistant demand specified by China's seismic codes and standards.
引文
[1]陆新征,叶列平,缪志伟,等.建筑抗震弹塑性分析:原理、模型与在ABAQUS、MSC.MARC和SAP2000上的实践[M].北京:建筑工业出版社,2009.
[2]原中晋.复杂结构体系弹塑性地震反应分析研究[D].上海:同济大学,2009.
[3]吕西林,卢文生.纤维杆元模型在框架结构非线性分析中的应用[J].力学季刊,2006,27(1):14-22.
[4]GB50011-2010建筑抗震设计规范[S].2010.
[5]李承铭.钢-钢筋混凝土杆系结构三维地震作用下弹塑性时程分析[D].上海:同济大学,2007.
[2]原中晋.复杂结构体系弹塑性地震反应分析研究[D].上海:同济大学,2009.
[3]吕西林,卢文生.纤维杆元模型在框架结构非线性分析中的应用[J].力学季刊,2006,27(1):14-22.
[4]GB50011-2010建筑抗震设计规范[S].2010.
[5]李承铭.钢-钢筋混凝土杆系结构三维地震作用下弹塑性时程分析[D].上海:同济大学,2007.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心