Abstract: An architecture unit of a concrete structure is formed by providing a pair of wall bodies facing each other substantially in parallel with each other on a foundation. The wall bodies are each composed of a porous steel-made formwork panel having large and small ribs formed on a surface thereof, a runner provided with a fitting groove fitted with lower ends of a plurality of formwork panels arranged side by side, and a cap fitted with upper ends thereof. A long-plate-like lower fixing member provided with ribs at both ends thereof is spanned and fixed on a lower face of the runner so as to be substantially perpendicular to the runner, and a long-plate-like upper fixing member provided with ribs at both ends thereof is spanned and fixed on a top face of the cap so as to be substantially perpendicular to the cap.

Abstract: An object of the invention is to realize a backfill structure suitable for relatively small-scaled land improvement without causing such a problem that a retaining wall after construction is unstable. A backfill structure for constructing an underground structure is composed of a plurality of wall face panels 1 vertically provided on a front face of a ground portion, coupling members 2 which are inserted through through-holes provided in the wall face panels to be fastened on the front face side of the wall face panels, net-like sheets 3 fastened with the other ends of the coupling members 2, and backfill soil body which is filled on the net-like sheets 3 to bury and fix the net-like sheets 3, where the backfill soil body is filled between the wall face panels 1, the back face side of the wall face panels, and the ground portion.

Abstract: [Problem] An object of the present invention is to provide a construction method for a new underground structure, the method achieving reduction in the load imposition of a new underground framework on an existing underground concrete framework, and reduction in construction cost for constructing the new underground structure. [Solving Means] A new underground structure 100 having a basement available as a residential space, and an underground pit which is an underground facility for housing piping equipment, etc., is constructed with a fluidized soil wall 300 held between an existing underground concrete framework 200 and a new underground concrete framework 400.

Abstract: An object of the invention is to provide a retaining wall and a construction method therefor whereby fixation between a steel sheet pile wall and a formwork panel to form the retaining wall is made easy, and can be reliably made, so that construction schedule reduction is achieved. The retaining wall is composed of steel sheet piles 100 driven in the ground preliminarily, a formwork panel 201 fixed in close contact with a face of the steel sheet piles 100 opposite to a ground region, and a formwork panel 202 vertically provided at a position facing the formwork panel 201. The formwork panels 201 and 202 are vertically provided on runners 204 fixed preliminarily to the ground by screws 203, and have caps 205 on their tops to maintain horizontal states and linear states of the formwork panels 201 and 202.

Abstract: [Problem to be Solved] The present invention is a formwork panel which can be utilized as an ordinary flat plate-shaped formwork and is further provided with excellent flexibility of design for forming a corner portion for a formwork when the formwork panel is utilized as the corner portion and prevents concrete or mortal from leaking from an unintended position. [Solving Means] A formwork panel 1 is a formwork panel of an implanted type formed by bending a plate-shaped material made from steel to an approximately rectangular shape in front view and an approximately squared wave shape in sectional view and cutting the same. By bending the panel steel plate to an approximately squared wave shape, a plurality of ridges 11 parallel with one another is formed on the formwork panel 1 at a predetermined interval. A plurality of projection-shaped ribs 12 in section in a widthwise direction is formed between the respective ridges 11 in parallel with the ridges 11 in a repetitive manner at a predetermined interval.

Abstract: A dot matrix printer having a platen, a carriage, and a print head mounted on the carriage. A paper guide is secured to the carriage. A ribbon mask made of a resilient plate is attached to the paper guide. A cantilevered resilient plate is formed in the ribbon mask so as to be abutted on a front end of the print head to form a path for a ribbon between the resilient plate and the print head.

Abstract: Magnet apparatus for providing a magnetic field having a gradient in an operation chamber comprising a cylindrical permanent magnet surrounding an outer periphery of the operation chamber and having opposite ends and a hollow interior, and a subsidiary yoke at one of the ends, the subsidiary yoke having a cylindrical portion extending into the hollow interior. The subsidiary yoke can include a flange portion. The cylindrical portion is inserted through the flange portion and fixed thereto with bolts. The permanent magnet can be made of Ba-ferrite, Sr-ferrite or the like.