型钢混凝土空间中节点受力性能有限元分析
发布时间：2019-08-03 08:54
【摘要】：采用有限元分析软件ABAQUS对型钢混凝土(SRC)梁柱平面节点试件的力学性能进行数值模拟,将模拟与试验结果对比,发现两者吻合较好,验证了模型的有效性.在此基础上,建立与平面节点对应的空间中节点有限元模型,研究SRC空间中节点在不同加载路径下的滞回性能、骨架曲线和延性性能,并进一步分析了楼板宽度、节点类型和轴压比等因素对中节点力学性能的影响.结果表明:与平面加载路径相比,空间加载使节点核心区产生双向耦合效应,从而降低了试件的承载能力;SRC空间中节点发生剪切破坏时,楼板宽度对其承载能力和变形能力影响较小;与中节点和边节点相比,空间角节点的极限荷载和位移均降低较多;随着轴压比增大,空间中节点变形能力有所降低.
[Abstract]:The finite element analysis software ABAQUS is used to simulate the mechanical properties of steel reinforced concrete (SRC) beam-column planar joints. The simulation results are compared with the experimental results, and it is found that the two methods are in good agreement with each other, and the effectiveness of the model is verified. On this basis, the finite element model of nodes in space corresponding to plane nodes is established, and the hysteretic properties, skeleton curves and ductile properties of nodes in SRC space under different loading paths are studied, and the effects of floor width, node type and axial compression ratio on the mechanical properties of the joints are further analyzed. The results show that compared with the plane loading path, the spatial loading makes the core area of the joint have two-way coupling effect, thus reducing the bearing capacity of the specimen, the width of the floor has little effect on the bearing capacity and deformation capacity of the node in SRC space, and the ultimate load and displacement of the spatial corner joint are much lower than those of the middle node and the side node. With the increase of axial compression ratio, the deformation ability of nodes in space decreases.
【作者单位】： 西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金资助项目(51478382)
【分类号】：TU398.9
[Abstract]:The finite element analysis software ABAQUS is used to simulate the mechanical properties of steel reinforced concrete (SRC) beam-column planar joints. The simulation results are compared with the experimental results, and it is found that the two methods are in good agreement with each other, and the effectiveness of the model is verified. On this basis, the finite element model of nodes in space corresponding to plane nodes is established, and the hysteretic properties, skeleton curves and ductile properties of nodes in SRC space under different loading paths are studied, and the effects of floor width, node type and axial compression ratio on the mechanical properties of the joints are further analyzed. The results show that compared with the plane loading path, the spatial loading makes the core area of the joint have two-way coupling effect, thus reducing the bearing capacity of the specimen, the width of the floor has little effect on the bearing capacity and deformation capacity of the node in SRC space, and the ultimate load and displacement of the spatial corner joint are much lower than those of the middle node and the side node. With the increase of axial compression ratio, the deformation ability of nodes in space decreases.
【作者单位】： 西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金资助项目(51478382)
【分类号】：TU398.9
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