文档介绍：
基于 ABAQUS 的多层框架梁式托柱节点的
受力性能分析
张云云,李鸿晶,孙广俊**
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(南京工业大学土木工程学院,南京 210009)
摘要:简要介绍了梁式托柱结构的受力机理及特点,应用有限元软件 ABAQUS,采用混凝
土塑性损伤模型对框架中含有的梁式托柱节点的受力性能进行分析。钢筋和混凝土采用分离
式建模,并用 Embed 技术对两者的自由度进行耦合。通过控制梁截面不变、变换三种不同
尺寸的柱截面,并对模型中的柱端施加平面内和平面外的水平单向往复荷载,分析梁、柱的
损伤分布情况。施加平面内荷载时,随着柱截面的增大,柱的损伤没有进一步发展,而梁的
损伤随之增大,并向梁底部发展;施加平面外荷载时,柱的损伤没有进一步发展,梁的损伤
向梁两侧腹部发展。最后从等效塑性应变角度分析梁柱的损伤情况.
关键词:结构工程;ABAQUS;梁式托柱;损伤分布;平面内;平面外
中图分类号:TU375
Analysis of the force performance of the form of column on
beam in multilayer frame based on ABAQUS
ZHANG Yunyun, LI Hongjing, SUN Guangjun
(Civil Engineering School, Nanjing University of Technology, Nanjing 210009)
Abstract:
In this paper, the character of the form of column on beam is briefly introduced. By
applying ABAQUS and concrete damage plasticity model, the force performance of the form of
column on beam in multilayer frame is analyzed. After the use of EMBED technology to couple the
degree of the freedom, the model can be finished by separation type. This model applies single cyclic
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horizontal load on the top of column of the model in and outside the plane. During the analysis,
keeping unchanged beam section and different sizes of column section to analyze the force
development of beam and column and draws the related conclusion of damage distribution. In the plane,
as the column section increasing, column has no obvious damage, but the damage of the beam
develops to the bottom of beam. Outside the plane, as the damage of the column has no further
development, the damage develops onto both sides of its abdomen.
Key words: Structural engineering; ABAQUS; form of column on beam; damage distribution; in the
plane; out of plane
0 引言
目前随着建筑结构功能的不断丰富,一般多层住宅往往设计有跃层,或在顶层加建突出
屋面的小阁楼。其通常需要在梁上立柱,这中在楼层的个别梁上立柱、但柱子不能直接落地
的结构形式工程上称为梁抬柱结构,规范称为梁式托柱。托柱梁式转换层受力机理[1] [2]:(1)
当转换梁承托上部普通框架时,在转换梁常用截面尺寸范围内,转换梁的受力基本和普通梁
相同;(2)传力途径采用柱→转换梁→柱的形式,传力直接、明确和清楚;(3)托柱梁在
竖向荷载作用下的内力和普通跨中有集中荷载的框架梁相似。
本文的研究对象是梁式托柱节点的抗震性能分析。在实际工程中,梁