EARTHQUAKE INSULATION METHOD DURING EXECUTION OF JACK-UP CONSTRUCTION

摘要

PROBLEM TO BE SOLVED: To ensure safety during construction of a multistoried structure by a method wherein the lower part of a jacked-up layer is placed on an earthquake insulation support on a gate bar beam, and the earthquake insulation support is fixed in a low story section and released in a high story section. ;SOLUTION: In such a state that jack-up by a distance equivalent to the height of one story is completed, a building frame 1 is supported by a building frame 1 by an earthquake insulation support 4 arranged on a gate bar beam 3 spanning between the upper parts of jack-up racks 2. Thereafter, construction is effected in such a manner that the hydraulic cylinder, the upper and lower beams of the jack of the jack-up rack 2 are lowered for removal, and a lower story is suspended from a building frame 1. The hydraulic cylinder and the upper and the lower beams of the jack are attached below a newly built story, a total load is supported through a tension rod to effect jack-up. Through repetition of above process, a structure is completed. During a time in which the structure under erection is a low story, the earthquake insulation support 4 is fixed by a steel frame block and bolts, and when the structure is built to a high story, fixing is released and an earthquake insulation function is provided, and safety in a construction period is ensured.;COPYRIGHT: (C)1997,JPO