| Since the Northbridge earthquake and the Kobe earthquake, brittle failure of the beam-column connections in steel frame of the earthquake loads resulting has become an important issues, Fractures stimulated many Construction measures for the beam-column connections of steel moment resisting frames to improve design, in order to conform to earthquake resistance design concept about "strong column and weak beam", at present, the partial weakening nearby section is one of main methods which is studying. The article studies the dog bone connection is one of typical kinds, by keeping plastic hinge away from welding area of the connection to protect the connections. Another, this paper conducts the research from the research approaches of some scholars on the basis of existing research results.This article profits from the partial scholar's research technique, uses finite element software ANSYS to conduct the research to the connections about the function of elastoplasticity performance under the cyclic loading, obtains the connections stress distribution and the territory plasticity expansion tendency, Drawing the hysteretic-curve of load—displacement stagnates, And has carried on the bearing capacity analysis. Further, through simulation test to the dog bone connection steel frame under reciprocation cyclic load, studied this type structure about the whole distortion characteristic, the destruction pattern and the hysteretic-curve of load—displacement stagnates, and the structure consumes energy the performance and so on; Has analyzed the stress characteristic of dog bone connections in the steel frame.According to the investigations in tests, the dog bone connection and the steel frame may promote the node and the structure ductility performance obviously, but reduces the supporting capacity Smaller, had achieved the design goal, through the further experimental study and with the design variable analysis, this kinds of connection had the strong realistic feasibility. |
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