Research on influence of constructing superstructure layer by layer for the interaction of upper and lower parts of high building

Currently,the interaction analysis of upper and lower parts of high building have been do without regard to the influence of constructing superstructure layer by layer usually.The research for frame construction with soil foundation shows,while the interaction effects is evidence,it have biggish influence for result of interaction analysis that constructing superstructure layer by layer.Compare with the instance of without regard to constructing superstructure layer by layer,while construction of superstructure layer by layer is considered,the constraints reduce on foundation from superstructure,the differential settlement of foundation increase,internal force of foundation largen;The axis force of pillar of first floor increase and reduce reverse to differential settlement of foundation;Especially,the moment of frame beam is different evidently,the degree that supper floor join in interaction is lower,the influence of interaction for it's internal force is very little.