贺旻斐，于东晖

（北京市建筑设计研究院有限公司, 北京 100045）

 

［摘要］新建天津至秦皇岛铁路客运专线工程唐山火车站的钢管混凝土柱节点尺寸大，构造复杂，采用了H型钢牛腿和穿心钢筋相结合的节点形式。研究确定以H型钢牛腿腹板抗剪为主进行抗剪验算，综合混凝土梁和H型钢翼缘的作用进行抗弯验算的设计原则。采用ANSYS软件对节点进行有限元分析，研究了节点受力性能、破坏模型和协同工作的能力。H型钢牛腿可以可靠地传递混凝土梁传来的荷载，并改善节点的承载能力和延性，是钢管混凝土柱和混凝土梁之间连接的重要组成部分。对节点的有限元分析结果表明，该节点具有较好的整体性能。

［关键词］钢管混凝土柱； 节点设计； H型钢牛腿； 有限元分析

中图分类号：TU973.121；TU398.7        文献标识码：A        文章编号：1002-848X(2013)17-0129-05

 

He Minfei, Yu Donghui

(Beijing Institute of Architectural Design, Beijing 100045, China)

 

Abstract: The concrete filled steel tubular（CFST）column-RC beam joints in New Tangshan Railway Station have large dimension and complicate detail construction. H shaped corbels and piercing reinforcing bars are used in the columns. The design principle is decided that H shaped corbel bears the shear force and the moment are supported by the concrete beams and corbel together. The mechanical performance, failure principle and the coordinated working performance are studied through finite element analysis. The H shaped corbel can transfer the load from beams reliably, improve the joint stiffness and load bearing capacity, as well as the important part of transition between concrete filled steel tubular column and reinforced concrete beam. Through the study, it makes clear that the joint has good integrate performance.

Keywords: concrete filled steel tubular column; concrete beam; joint; H shaped corbels; finite element; prestress

作者简介：贺旻斐，助理工程师，Email: Heminfei@163.com。

 

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