Abstract: A pressurization processing system that performs pressurization processing on a target by immersing the target in the sea or a lake, includes a housing body that is configured to house the target, a buoyancy body that is configured to float the housing body, a weight body that has a specific gravity greater than that of seawater or lake water, and a separation mechanism that separably connects the housing body and the weight body. In the system, the buoyancy body includes a housing bag having water permeability, and the housing bag houses a plurality of hollow glass spheres, and is immersed in the seawater or the lake water so that a space between the plurality of hollow glass spheres housed in the housing bag is filled with the seawater or the lake water.

Abstract: A vibration control wall structure, which is introducible into a wall part of a building, includes a wall frame, a vibration control wall body, and a vibration control damper for absorbing a vibration acting on a building. The vibration control wall body includes a plurality of face materials which are fixed to a frame material via a fastening member and are connected to each other in a width direction. A gap part is formed such that both side end portions of the vibration control wall body are separated from the wall frame so as to absorb displacement in an in-plane direction. The vibration acting on the building is damped by the vibration control damper having a long hole in a longitudinal width direction of the vibration control wall body. The vibration control wall body can relatively slide in the long hole in the longitudinal width direction.

Abstract: An inter-element joint structure including: a first member provided with a hole or a trench; a second member provided with a through-hole; a bushing member fitted to the through-hole formed in the second member and fixed to the second member while the bushing member comes into contact with a surface of the first member; a fastening member including a bolt provided with a shank penetrating at least the bushing member and the hole or the trench of the first member to fasten the bushing member and the first member; and a washer that is interposed between a head of the bolt and the bushing member and has a diameter larger than that of the bushing member. The bushing member has a thickness larger than that of the second member, and the through-hole of the second member has a circumferential edge loosely fitted between the washer and the first member.

Abstract: A vibration control wall structure, capable of damping vibration, includes a wall frame provided at a wall part of a building, a vibration control wall body provided at the wall frame, and a vibration control damper provided between the wall frame and the vibration control wall body. In the vibration control wall body, any one of an upper end portion and a lower end portion and both side end portions of a face material are fixed to a frame material, a plurality of face materials is provided inside the wall frame by connecting in a width direction via the frame material, and a gap part that separates both side portions of the vibration control wall body and the wall frame is formed so as to absorb displacement in an in-plane direction caused when vibration acting on the building is damped by the vibration control damper.

Abstract: A method of installing a base isolation floor includes a base arrangement process for installing a plurality of plate-shaped bases, which are formed so that a plurality of upward convex curved surface portions are aligned on an upper surface, on double-sided tapes applied onto an upper surface of a floor over a plurality of columns to be substantially parallel to each other and thereby arranging the bases on the upper surface of the floor and a slide plate installation process for installing a plurality of plate-shaped slide plates having a substantially flat lower surface on the base.