（1 铁道第三勘察设计院集团有限公司， 天津 300142； 2 东北大学资源与土木工程学院， 沈阳 110819）

［摘要］以STS(Steel Tube Slab)管幕构件室内试验为依托，为充分研究STS管幕构件的力学性能，建立构件的有限元模型，用试验结果标定有限元模型。在此基础上，对管幕结构不同荷载阶段下的变形和应力进行分析，并研究了钢管厚度，翼缘板厚度，螺栓直径等参数对STS管幕构件延性的影响。结果表明：钢管厚度的变化，对试件的延性影响较大；翼缘板厚度的变化，能显著提高试件的延性；螺栓直径的变化，对试件的延性影响不明显。

［关键词］管幕结构； 延性； 变形； 数值分析； 钢管混凝土； ABAQUS

中图分类号： TU93 文献标识码： A文章编号：  1002-848X(2016)S2-0569-05

Numerical analysis of mechanical behavior of steel tube slab structure based on ABAQUS

Guan Yongping1, Jia Pengjiao2, Zhao Wen2, Han Jianyong2， Li Shengang2， Cheng Cheng2

（1 The 3rd Railway Survey & Design Institute, Tianjin 300142, China；2 School of Civil & Engineering, Northeastern University, Shenyang 110819, China）

Abstract： Based on the experimental results of STS(Steel Tube Slab) specimens, the elaborate element models are proposed to sufficiently study on the mechanical properties of STS specimens, the finite element model is verified by using the experimental results. On this basis, deformation and stress of every stage of STS structure were analyzed, and analysis on influence of steel thickness, flange thickness and bolt diameter on mechanical properties of STS specimens was operated. The results indicate: steel thickness has had a big impact on ductility of STS specimens; flange thickness has a notable improvement on ductility of STS specimens; however, bolt diameter and reinforcement ratio have little influence on ductility of STS specimens.

Keywords： steel tube slab structure; ductility; deformation; numerical analysis; concrete-filled steel tube; ABAQUS

作者简介：关永平，博士，工程师，主要从事城市地铁隧道方面的设计和研究工作，Email：guanyongping@126.com。

*国家自然科学基金项目(51578116)。