The Analysis Of The Torsion Effect Of Multi-tower And Connected High-rise Structure With Whole Basement Under The Earthquake Action

New version of ‘The specification on seismic design of buildings " prescribes thenecessity of testing the multi-point excitation seismic response for large oroverly-long structures for the first time.Concerning those long span or Siamesestructure under which linked basements are used, the fundamental components willnot deform with the constraints from basement top and floor under the support ofmulti-point earthquake excitation. The response of quasi-static displacements will beunobvious. Then the impact of multi-point seismic excitation incentives is mainlyreflected on the various input phase of each point, which is equivalent to an input of arotational component of ground motion to the foundation slab.From the time domain and frequency domain to analyze the tower, tower flexibleconnection conjoined structure considering traveling wave effect caused by theearthquake response of the torsional vibration.(1) For the non super-length structure, the accidental eccentricity is considered ina large part to think about the twisting motion structural seismic in a indirect methods.In order to verify the relationship between the accidental eccentricity and the travelingwave effects caused by torsional vibration excitation algorithms, first, with of the nonsuper-length rectangle, L-shaped frame and rectangular planar multilayer planar frameshear wall as the object of the research, to consider the accidental eccentricityone-way horizontal seismic excitation, one-way horizontal earthquake and theearthquake response analysis caused by the traveling-wave horizontal seismic effectson the based torsional vibration common excitation, It shows that under the sameincentive adopting one-way horizontal seismic and considering thetorsional vibration of foundation caused bytraveling wave effect seismicresponse analysis is feasible(2) For rules of plane structure, compared with not consider accidentaleccentricity,whether consider accidental eccentricity or consider the basis ofconsidering traveling wave effect under the action of the torsional vibration, theresponse of the structure at the bottom of the amplification ratio is larger than thetop,the proportion of amplification of the high-level structure is more obvious thanthe multilayer structure;The seismic response of the same floor and common components increase ratio is larger than that of near the middle of the centroidcommon artifacts.(3) For irregular plane structure, compared with not consider accidentaleccentricity, whether consider accidental eccentricity or consider the basis ofconsidering traveling wave effect under the action of the torsional vibration, theresponse of the structure at the bottom of the amplification ratio is not necessarilybigger than the top, it is according to the condition of plane irregular concreteanalysis.(4) Compaired with the single pylon frame shear wall considering the effect onbase torsional vibration caused by traveling wave effect, the shear force and bendingmoment responses of multi-tower and multi-tower flexible connection joint, ncreasedby an average of10%.This is because when consider traveling wave effect under theaction of the torsional vibration, single tower frame shear wall structure centres thecenter of the single tower itself as the center of rotation,however multi-tower andmulti-tower flexible connection joint structure centres the center of the wholebasementas the rotation center.The moment of inertia and the radius of gyration areincreased.