Damping intermediate column and damping structure using same

Abstract

A damping intermediate pillar, which can exhibit a sufficient resistance against the horizontal force of a strong earthquake by reinforcing the joins between the damping intermediate pillar and the upper and lower beams, is disclosed. A damping intermediate pillar 14, used for a building or a structure configured of pillars 1 and beams 3, is divided into upper and lower damping intermediate pillar portions 14a, 14b of H shape steel, and includes a plurality of inner steel plates 7b fixed on the damping intermediate pillar portion 14b and a plurality of outer steel plates 7a fixed on the other damping intermediate pillar portion 14a. The inner and outer steel plates are arranged alternately in a single or a plurality of layers, between which a viscoelastic member 15 is held to make up a viscoelastic damper 17. The coupling end surfaces of the intermediate pillar portions 14a, 14b directed vertically are fixed on the upper and lower floor beams 3a, 3b. Further, one or both sides of each of the damping intermediate pillar portions 14a, 14b (i.e. the coupling members 13a, 13b) and the upper and lower floor beams 3a, 3b are coupled to each other by knee braces 19.

Description

technical field [0001] The present invention relates to a damping (vibration damping) intermediate column and a damping structure using such a damping column, which is used to absorb input vibration energy, or in particular, to absorb the frame structure of a building and various Horizontal forces in other structures. Background technique [0002] Commonly used techniques in this category include the following (1)-(7): [0003] (1) Japanese Unexamined Patent Publication No. 2000-274108 concerning a viscoelastic damper structure directly coupled to upper and lower floor beams, (2) Japanese Unexamined Patent Publication No. 2000-54680 , relating to a detailed structure for mounting viscoelastic dampers on upper and lower floor beams, (3) Japanese Unexamined Patent Publication No. 2000-73605, relating to a laminated steel plate for viscoelastic dampers , (4) Japanese Unexamined Patent Publication No. 2000-73608, relating to a technique for coupling a viscoelastic damper, (5) ...

AI Technical Summary

Problems solved by technology

However, since the upper and lower end portions of the resistance intermediate column 4 are simply fixedly connected to the beams 3a, 3b of the upper and lower floors by bolts or welding, the joint strength is insufficient to resist an earthquake of a large magnitude.

As a result, the junction 9a between the damping intermediate column 4 and the beam 3 is unduly prone to breakage before performing the damping function.

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