【摘要】：采用有限元分析軟件ABAQUS對(duì)型鋼混凝土(SRC)梁柱平面節(jié)點(diǎn)試件的力學(xué)性能進(jìn)行數(shù)值模擬,將模擬與試驗(yàn)結(jié)果對(duì)比,發(fā)現(xiàn)兩者吻合較好,驗(yàn)證了模型的有效性.在此基礎(chǔ)上,建立與平面節(jié)點(diǎn)對(duì)應(yīng)的空間中節(jié)點(diǎn)有限元模型,研究SRC空間中節(jié)點(diǎn)在不同加載路徑下的滯回性能、骨架曲線和延性性能,并進(jìn)一步分析了樓板寬度、節(jié)點(diǎn)類型和軸壓比等因素對(duì)中節(jié)點(diǎn)力學(xué)性能的影響.結(jié)果表明:與平面加載路徑相比,空間加載使節(jié)點(diǎn)核心區(qū)產(chǎn)生雙向耦合效應(yīng),從而降低了試件的承載能力;SRC空間中節(jié)點(diǎn)發(fā)生剪切破壞時(shí),樓板寬度對(duì)其承載能力和變形能力影響較小;與中節(jié)點(diǎn)和邊節(jié)點(diǎn)相比,空間角節(jié)點(diǎn)的極限荷載和位移均降低較多;隨著軸壓比增大,空間中節(jié)點(diǎn)變形能力有所降低.
[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.
【作者單位】： 西安建筑科技大學(xué)土木工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51478382)
【分類號(hào)】：TU398.9

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