| 摘要 |
PROBLEM TO BE SOLVED: To construct a new structure ensuring beam-column stress transfer at least without demolishing columns of an existing structure. SOLUTION: New columns 34 of an annular section are built as columns of a new structure 50 in surrounding relation to underground columns 12 of an existing structure. Beams 38 of the new structure 50 are build in rigid connection to the new columns 34. The new columns 34 and beams 38 can construct the new structure 50 ensuring beam-column stress transfer without demolition of the existing underground columns 12. Even a case requiring a major change in strength design, a case of resetting of floor heights, and the like can be accommodated without demolition of all the existing structure. COPYRIGHT: (C)2004,JPO
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