The Research On Seismic Responses Of Cylindrical Latticed Intersected Three Dimensional Beam System Reticulated Mega-Structure

The cylindrical latticed intersected three dimensional beam system reticulatedmega structure is a new form of spatial structures, which has some advantages ofsaving steel, reasonable stress.So it is appropriated to the super long span developmentand it will be well used in engineering in the future.Considering the effect of initialstatic loads, the seismic characteristic of the structure is researched in detail.The seismic response characteristics of main structure were investigated underdifferent earthquake waves, in different earthquake waves the structure has differentvibration characteristics, then compared the results.Considering the main structurebearing the load with substructure cooperatively, the seismic response characteristicswere investigated under EL Centro wave. At last get the influences of substructure inmega structure dynamic behavior by comparing the results in different load bearingconditions.Then the elastic plastic properties of the structure were studied with consideringthe material nonlinearity. The node displacement, inner force, quantity and distributionof yield members were investigated in the whole elastoplastic process on the conditionof the main structure bearing the load by itself. The influence of the structure underdifferent detections severe earthquake wave was obtained. Main structure dynamicbehavior was studied under severe earthquake whether considering the materialnonlinearity or not, and the influence of internal force redistribution on nodedisplacement and inner force was obtained. Systematic parameter analysis of the structure span ratio was carried out and the response influences of different span ratioswere obtained.Finally, some contents and conclusions in this paper are summarized, which canbe used in the practical engineering application of such structure, and the researchdirection of some new problems was also put forward.