【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。更多还原

【Abstract】 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.更多还原