介绍了开槽垫板施工工艺的特点，并利用有限元法和断裂力学原理对应用开槽垫板的高层钢框架节点的脆断性能进行了分析。
The paper introduces characteristics of grooved backup bar and analyses the performance of brittle fracture of steel frame connections using grooved backup bars.
多高层钢框架在进行有限元计算时，必须首先输入大量的信息数据，包括节点信息、单元信息、荷载信息等。
A vast amount of information data must be input before finite element analysis of steel frames, such as node information, element information and load information.
先从梁柱节点受弯变形的机理入手，推导出钢框架梁柱焊接连接节点的初始刚度计算公式。
The formula calculating the initial stiffness of welded connection of steel frame was drawn according to bending deformation mechanism of joint zone of welded steel frame.
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