According to the brittle failure form and mechanics of steel frame rigid joint,the design suggestion of the joint is proposed for improving the ductity of the joints.

Based on the experimental study of 3 kinds rigid joints for concrete filled steel tubular framed structures,the transfer behavior and working mechanism is analysed.

Based on the experimental study of six common kinds of rigid joints for con- crete filled steel tubular framed structure, author analyzes the transfer behavior and working mechanism of steel tube and concrete at the joint, compares with vacant steel tubular framed structure before filled with concrete, and gives the range of complex and high stress area at every kind of joints in this paper.

In order to study the fire-resistance of rigid joints in steel frames, four full-scale intermediate joints were tested and studied with 3D nonlinear finite element analysis software.

Mechanial characteristics of steel framework joint stiffness;

In this paper, the reason which causes the shear deformation and the joint stiffness were analyzed.

In this paper,current research on seismic performance and some design methods of rigid connection is in- troduced through the material from home and abroad,which mainly deal with its application and research.

Discussion of the Properties of semi-rigid nodes in portal frame;

Experimental research and functional analysis of attachments of semi-rigid nodes in steel structures;

This paper introduces the test process and failure results of the semi-rigid nodes connected with overhanging end plates under the loads in the steel frame.