| The use of the cellular beam has a big advantage is convenient pipeline crossing, more efficient use of architectural space. At the same time, it has the advantage of light deadweight, high bearing capacity, economic, beautiful and so on, it has great practical value in engineering practice. But the current academia about the research of the cellular beam mainly focused on the study of a single component, and the study of the joint is deficiency. Especially the study of the cellular beam-column joint in seismic performance research is scarce, and China is an earthquake-prone country. It is very necessary to understand the cellular beam-column joint and reasonable seismic design based on the above reasons.The author using the Numerical simulation method researched the hysteretic performance of hexagonal-hole cellular beam-column joints in steel frames under low reversed cyclic loading. Using the linear strengthening elastic-plastic model considering material nonlinearity and geometrical nonlinearity, without considering the effect of initial geometric imperfection and residual stress, in accordance with the above factors the author established finite-element model. And compared finite element model with the existing experiment of cellular beam-column joint, to verify the correctness of the finite-element model.In order to examine the hexagonal-hole cellular beam-column joint under low-cyclic reversed loading hysteretic performance, the author researched the hysteresis performance rule of cellular beam-column joint considering three factors the distance of first hole center on cellular beam to column flange(D), divergence-ratio(K), space-ratio(D/H). Mainly considering the above three factors analysed the joints failure pattern, hysteresis curve, skeleton curve, stiffness degradation, ductility and energy dissipation ability get the seismic performance of the cellular beam-column joints in steel frames under different parameters change rule. And according to the seismic performance of the cellular beam-column joints in steel frames, put forward the seismic performance optimized design method of the hexagon hole cellular beam-column joints. Contrast the seismic performance of hexagonal-hole cellular beam-column joints using the method of optimization design and the existing design method to design the hexagon-hole cellular beam-column joints, according to the comparison results evaluate the cellular beam-column joints optimization design method. |
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