The Application And Study Of Reverse Order For Constructing High Buildings

Although advantages of reverse order, the development of reverse order for construction is limited by its incompleteness. A lot of studies are finished.Researching on the technology If reverse order is to study strains If pits,structural systems If basement,environmental surwey and underpinnings. On account of emphasizing developing methods If checking strength If pick-ets,modemizing machenes of excavation and studying methods of underpinning is put forward and is a way If controlling the quality of pickets in sites, which leads an active effect;synthetic application If rankintheory,spatial and time effect theory to excavation tl aanalyze the state of soil force and strain is brought forward andthe time effect should be considered in the zone of clay, the formation and development of soil plasticity are analyzed and the most dangerous zone to decide how to excavate and where to begin is found; analyzing the cause of picket settlement during reverse order and the differential settlement and discussing hlw to solute it .Duringh the temporary survey and the environmental warship,bringing rorward the theory of environmental vibration and analyzing the state of soil force and probability of losing stabilization of soil under the effect of environmental vibration; analyzing the state offeree in underground concrete wall by the method of mathematics and pointing out the place of the maximum force and deformation. Based on systematic illustrating the reverse order, problems about application and development of reverse order and suggestions also are expressed.