| 摘要 |
PROBLEM TO BE SOLVED: To reduce influence on an existing building due to the addition of an elevator shaft or the like and to prevent damage to the elevator shaft itself in case of an earthquake. SOLUTION: A hoistway structure 10 added adjoining an existing mid-to-high-rise building 12 is hollow inside and formed with a roof part 20 and connecting passages 24 communicating with the respective floor parts 22. According to the natural period of the hoistway structure 10, the roof part 20 or one connecting passage 24 in the optional floor is connected to the existing building 12, and the other floors are put in the non-connected state. COPYRIGHT: (C)2005,JPO&NCIPI
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