基于ANSYS分析的梁贯通式RCS节点承载性能研究
发布时间：2018-09-01 17:58
【摘要】：钢梁-钢筋混凝土柱(RCS)组合结构的应用促进了世界各国对其力学性能的深入研究,特别是对RCS组合节点的研究。作为各构件的连接部位,节点的承载能力直接影响着结构的可靠性,因此设计有足够强度的节点至关重要。鉴于RCS梁柱节点构造方式多样,受力复杂,采用试验研究耗时费力,数值分析方法因具有适用性强、成本低、分析便捷等优势获得广泛的应用。本文采用有限元软件ANSYS研究不同构造对节点性能的影响,完成的主要工作及相关结论如下:(1)对RCS组合节点的国内外研究和应用现状进行了简要综述。(2)采用ANSYS对2个典型试件的节点承载性能进行了研究,仿真结果与已有试验数据吻合较好。(3)在上述工作基础上另设计了11个构造不同的梁贯通式节点试件,探讨了面承板宽度、梁柱截面高宽比、混凝土抗压强度、面承板切口以及附加嵌入式面承板等因素对节点承载力的影响。结果表明:前三者的增大均能有效提高节点抗剪承载性能。对采用切口面承板的节点,当面承板半高度满足dp≥0.45dw(dw为钢梁腹板高度)时,切口的存在不会显著影响节点的承载能力。在节点核心区中心位置嵌入一块面承板可直接加强内部混凝土斜压杆作用。合理增大切口或嵌入面承板的宽度或减小其厚度均能有效提高节点承载性能。(4)通过有限元模拟获取的梁端荷载值进一步计算得出了试件节点的承载力,并将该结果与理论解进行了比较,对比表明仿真解普遍高于理论值。
[Abstract]:The application of steel beam-reinforced concrete column (RCS) composite structure has promoted the deep research on its mechanical properties in the world, especially on the RCS composite joints. As the connection part of each component, the bearing capacity of the joint directly affects the reliability of the structure, so it is very important to design the joint with sufficient strength. In view of the diversity of RCS Liang Zhu node structure and the complexity of the force, it is time-consuming and laborious to adopt the experimental study, and the numerical analysis method has been widely used because of its advantages of strong applicability, low cost and convenient analysis. In this paper, the finite element software ANSYS is used to study the effect of different structures on the performance of joints. The main work and related conclusions are as follows: (1) the current research and application of RCS composite joints at home and abroad are briefly reviewed. (2) the load-bearing performance of two typical specimens is studied by ANSYS. The simulation results are in good agreement with the existing experimental data. (3) on the basis of the above work, another 11 specimens with different structures of beam through joint are designed, and the width of slab, the ratio of height to width of Liang Zhu section, the compressive strength of concrete are discussed. The influence of facet notch and additional embedded bearing board on the bearing capacity of joints. The results show that the increase of the first three can effectively improve the shear bearing capacity of the joints. For the joints with notched support plate, when the half-height of the support plate meets dp 鈮，
本文编号：2217934
[Abstract]:The application of steel beam-reinforced concrete column (RCS) composite structure has promoted the deep research on its mechanical properties in the world, especially on the RCS composite joints. As the connection part of each component, the bearing capacity of the joint directly affects the reliability of the structure, so it is very important to design the joint with sufficient strength. In view of the diversity of RCS Liang Zhu node structure and the complexity of the force, it is time-consuming and laborious to adopt the experimental study, and the numerical analysis method has been widely used because of its advantages of strong applicability, low cost and convenient analysis. In this paper, the finite element software ANSYS is used to study the effect of different structures on the performance of joints. The main work and related conclusions are as follows: (1) the current research and application of RCS composite joints at home and abroad are briefly reviewed. (2) the load-bearing performance of two typical specimens is studied by ANSYS. The simulation results are in good agreement with the existing experimental data. (3) on the basis of the above work, another 11 specimens with different structures of beam through joint are designed, and the width of slab, the ratio of height to width of Liang Zhu section, the compressive strength of concrete are discussed. The influence of facet notch and additional embedded bearing board on the bearing capacity of joints. The results show that the increase of the first three can effectively improve the shear bearing capacity of the joints. For the joints with notched support plate, when the half-height of the support plate meets dp 鈮，
本文编号：2217934
本文链接：https://www.wllwen.com/jianzhugongchenglunwen/2217934.html
