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钢筋混凝土板式楼梯的非线性有限元分析
引用本文:李艳娇,李瑞敏.钢筋混凝土板式楼梯的非线性有限元分析[J].沈阳大学学报,2013,25(4):332-336.
作者姓名:李艳娇  李瑞敏
作者单位:1. 沈阳建筑大学建筑设计研究院,辽宁沈阳,110015
2. 沈阳机床(集团)有限责任公司设计研究院,辽宁沈阳,110142
摘    要:采用ABAQUS软件建立了某混凝土板式楼梯的精细化三维有限元模型,并对其进行了竖向载荷和水平载荷作用下的非线性分析.结果表明,通过简化计算设计的混凝土板式楼梯完全满足结构的承载力和变形要求;在竖向载荷和水平载荷共同作用下,休息平台处的梯柱形成了短柱,其受力明显大于楼层处的梯柱,钢筋极易进入屈服状态;设计中应加强楼梯结构的抗震计算和分析.

关 键 词:钢筋混凝土板式楼梯  ABAQUS  非线性分析  有限元分析

Nonlinear Finite Element Analysis of Reinforced Concrete Slab Stair
Li Yanjiao , Li Ruimin.Nonlinear Finite Element Analysis of Reinforced Concrete Slab Stair[J].Journal of Shenyang University,2013,25(4):332-336.
Authors:Li Yanjiao  Li Ruimin
Institution:1. Institute of Architectural Design, Shenyang Jianzhu University, Shenyang 110015, China; 2. Design and Research Institute, Shenyang Machine (Group)Co., Ltd., Shenyang 110142, China)
Abstract:The fine 3D finite element model of one reinforced concrete slab stair is built with the software of ABAQUS, and then nonlinear analysis of the slab stair under vertical and horizontal load is carried out. Analysis results show that the reinforced concrete slab stair designed with simplified calculation method completely meets the hearing capacity and deformation requirements of the structure; the stair columns of rest platform under vertical and horizontal load form short columns, the stress in them is evidently bigger than the stress in the stair columns of floor, so reinforcing steel bar will enter the yield condition easily; antiseismic calculation and analysis should be enforced in stair design.
Keywords:reinforced concrete slab stair~ ABAQUS  nonlinear analysis  finite element analysis
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