The influence of joint stiffness on the stability of geodesic single-layered reticulated shells with initial imperfection;

The effect of joint stiffness on mechanical behaviors of steel frames;

Stability behavior of joint stiffness on the single-layer reticulated shell of badminton arena for 2008 Olympic Games;

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.