Space grillage analysis model of steel-concrete composite beam

IF 4 3区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Steel and Composite Structures Pub Date : 2021-01-01 DOI:10.12989/SCS.2021.40.2.255

P. Lu, Dengguo Li, Ying Wu, Simin Huang, Yijie Zhang

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Abstract

In order to accurately grasp the mechanical behavior of the composite beam structure and achieve its refined analysis. In this paper, the stiffness matrix of a new type of spatial grid element is derived using the principle of energy variation. Based on the spatial grid element, a finite element analysis program is written using MATLAB software. A new type of spatial grid element analysis method that can be used for the overall force analysis of composite beam structures as well as the local refined analysis of the structure is proposed. In addition, the internal force, stress and displacement of each part of the composite beam can also be directly obtained. In order to verify the accuracy and reliability of the spatial grid analysis element proposed in this paper. The composite beam in the existing references are used as the analysis object, and the analysis result of the spatial grid element is compared with the references result. The research results show that the analysis results of spatial grid elements have high accuracy and can realize the refined analysis of composite beams.

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钢-混凝土组合梁空间格栅分析模型

为了准确地掌握组合梁结构的受力性能，实现其精细化分析。本文利用能量变分原理推导了一种新型空间网格单元的刚度矩阵。基于空间网格单元，利用MATLAB软件编写了有限元分析程序。提出了一种新的空间网格单元分析方法，既可用于组合梁结构的整体受力分析，也可用于结构的局部精细化分析。此外，还可以直接得到组合梁各部分的内力、应力和位移。为了验证本文提出的空间网格分析单元的准确性和可靠性。将已有文献中的组合梁作为分析对象，并将空间网格单元的分析结果与文献结果进行比较。研究结果表明，空间网格单元的分析结果具有较高的精度，可实现组合梁的精细化分析。

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来源期刊

Steel and Composite Structures 工程技术-材料科学：复合

CiteScore

8.50

自引率

19.60%

发文量

审稿时长

7.5 months

期刊介绍： Steel & Composite Structures, An International Journal, provides and excellent publication channel which reports the up-to-date research developments in the steel structures and steel-concrete composite structures, and FRP plated structures from the international steel community. The research results reported in this journal address all the aspects of theoretical and experimental research, including Buckling/Stability, Fatigue/Fracture, Fire Performance, Connections, Frames/Bridges, Plates/Shells, Composite Structural Components, Hybrid Structures, Fabrication/Maintenance, Design Codes, Dynamics/Vibrations, Nonferrous Metal Structures, Non-metalic plates, Analytical Methods. The Journal specially wishes to bridge the gap between the theoretical developments and practical applications for the benefits of both academic researchers and practicing engineers. In this light, contributions from the practicing engineers are especially welcome.