钢筋混凝土框架全错开节点拟静力试验与错层节点非线性有限元分析-结构工程专业论文.docxVIP

重庆大学硕士学位论文推迟了节点区混凝土的最终压溃，这使得中等轴压比下的节点受力性能较低轴压 重庆大学硕士学位论文 推迟了节点区混凝土的最终压溃，这使得中等轴压比下的节点受力性能较低轴压 比下节点受力性能有很大改善。 关键词：错层节点，传力机理，非线性，有限元 n 英文摘要Abstract 英文摘要 Abstract During recent years，the researches of staggered floor structure have been paid close attention to by academic and engineering circles as the structure itself is increasingly applied in the civil industry．The key of the pmbtern focuses on staggered joint．The intricate natures of the staggered joint cause the research more arduous than those on C01TnTlOn joint．Therefore，only few researches on the mechanisms of shear transfer and seismic resistant behaviors about staggered joint for empirical needs have been accomplished SO far． In this paper嬲it is．trying to fill the gap of the lack of sufficient researches and the strong desire of the industry the usage of the structure．This paper does research and investigation on the variation law of ductility,stiffness，load capacity,energy dissipation of beam-column assembly and the influence of staggered height axial load ratio in column the seismic resistant behaviors of the staggered joints via testing three nearly full—sized specimens of reinforced concrete beam-column aSsembly under reverse cyclic loading．Further,the reinforced concrete nonlinear finite element analysis is thoroughly discussed under the variances of the mechanisms of shear forces transfer for different loading direction,staggered height and axial force ratios． After the test and nonlinear finite analysis on the staggered joint，the conclusion drawn as following： 1．The anchor behaviors of beam reinforcement in staggered joint arc better than common interior joint，which is the main reason that makes the energy dissipation of staggered joint superior tO common joint． 2．The better quality of aIlchor behaviors iS beneficial to the seismic behavior of the staggered joint，making the beam reinforcement overstength．Corresponding to the strength,the anti—shear capacity of the beam becomes comparatively absent；and