| 摘要 |
PROBLEM TO BE SOLVED: To provide an underground structure reinforcing method which relatively easily allows restoration of a reinforced portion of an underground structure even if a large earthquake beyond assumption has occurred and restoration work of the reinforced portion is necessary, and brings about a reinforced state of the structure before occurrence of the earthquake. SOLUTION: According to the underground structure reinforcing method, excavation of the ground is carried out along side walls 1b, 2b of respective buildings 1, 2, and a joint portion 4, building underground portions 1a, 2a sandwiching the joint portion, and an upper area of an underground connection structure 3 are exposed, followed by mounting load bearing members 8a, 8b that can bear a tensile load of a predetermined value or more on a side surface of the building underground portion and the underground connection structure, in a manner striding the joint portion. Then a deformation absorbing material 7 capable of absorbing earthquake vibration is connected to the load bearing member on the side of the building underground portion and the load bearing member on the side of the underground connection structure, and thus the load on the joint portion is reduced. COPYRIGHT: (C)2009,JPO&INPIT
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