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在工程设计中,柱脚节点一般被视为“刚接”或“铰接”以简化设计过程,但事实上,柱脚节点往往介于两者之间,属于“半刚性”节点。刚性柱脚节点实际上具有有限的转动能力。本文针对外露式刚性柱脚节点,利用现有试验结果进行有限元模拟和校对,给出了可靠、适用的ABAQUS有限元建模和分析方法,并对四锚栓外露式刚性柱脚节点进行了有限元参数分析,得出影响柱脚节点受力性能的主要因素:底板厚度、锚栓直径、锚栓位置、轴压比。
In engineering design, the column and pin nodes are generally regarded as “just connected ” or “hinge ” to simplify the design process, but in fact, the pin and pin nodes are often in between, belong to “semi-rigid ”node. Rigid leg nodes actually have a limited ability to rotate. In this paper, for the exposed rigid column and leg joints, finite element simulation and proofreading are carried out based on the existing test results, and a reliable and applicable ABAQUS finite element modeling and analysis method is given. The four-bolt exposed rigid column and leg joints Finite element parametric analysis, the main factors that affect the mechanical behavior of the column-foot joint are obtained: the thickness of the base plate, the diameter of the anchor bolt, the position of the anchor bolt and the axial compression ratio.