结构工程师2017，Vol.33Issue(3)：51-57,7.
装配式预应力混凝土框架梁端延性影响因素分析
Analysis on Factors Affecting Ductility of Prefabricated Prestressed Concrete Beam End
摘要
Abstract
Based on the low-cycle experiments on prefabricated prestressed concrete beam,numerical analyses were conducted using the finite element software ABAQUS to investigate effects of compression zone depth and shear span ratio on the displacement ductility and ultimate bearing capacity of the specimens.The analysis results showed that in a reasonable range of compression zone depth,decrease of the compressive zone depth was beneficial to the improvement of the displacement ductility and ultimate bearing capacity,and brittle failure would be caused while the depth of compression zone is too low.Increase of the shear-span ratio can improve the displacement ductility,but detrimental to the ultimate bearing capacity of the members.In the reasonable range of compression zone depth and shear span ratio,damage of the frame beam mainly concentrated at the beam ends.关键词
装配式预应力混凝土/数值模拟/延性/受压区高度/剪跨比Key words
prefabricated prestressed concrete/numerical analysis/ductility/depth of compression zone/shear span ratio引用本文复制引用
许磊,于江,张利新,乐风江..装配式预应力混凝土框架梁端延性影响因素分析[J].结构工程师,2017,33(3):51-57,7.基金项目
新疆七星建筑股份有限公司委托新疆大学的横向课题“端部释放预应力框架梁端延性研究”(201404101022) （201404101022）
