Abstract: In a rigid connection structure of a bridge pier and concrete girder, a joint-equipped PC concrete girder is constituted by burying a rear half part of a shaped-steel joint formed of short shaped-steel respectively in both ends of the concrete girder and protruding a front half part of each shaped-steel joint respectively from each end face of the concrete girder, the respective shaped-steel joint portions protruded from the respective end faces of the concrete girders are supported on a bridge abutment face of a bridge pier while being connected to a connection strip member which arises from the bridge abutment face, and the respective shaped-steel joint portions and the connection strip member are buried in connection concrete which is additionally casted on the bridge abutment face.

Abstract: A floor slab bridge structure is capable of enhancing the strength with which bridge girders and concrete bridge piers are rigidly joined so as to effectively suppress expansion and contraction, deflection, and distortion of the bridge girders, and to synergistically enhance the strength of connection concrete itself against the expansion and contraction, distortion, etc., to thereby be effective to prevent collapse of a bridge due to a large earthquake. Slab concrete is hammer-set between sides of respective bridge girders, which are spaced apart in a bridge width direction, along a length direction of the bridge girders. Connection concrete, in which bridge girder portions supported on bridge bottom surfaces of concrete bridge piers supporting the bridge girders are embedded, is additionally deposited on the bridge bottom surfaces to form a floor slab bridge structure constituting a rigid joining structure.

Abstract: A floor structure comprises a plurality of steel beams 4 arranged in parallel, each steel beam 4 including a web, an upper flange disposed at an upper end of the web, and a lower flange disposed at a lower end of the web, a floor surface being formed on the upper flange 2. The floor structure further includes displacement preventing spacers interposed between the upper flanges and/or lower flanges of the adjacent steel beams. Each displacement preventing spacer includes a load receiving part which is brought into engagement with the adjacent upper flanges and/or lower flanges to receive an active load incurred by the individual steel beams 4 so as to inhibit the steel beams 4 from displacing downward.

Abstract: A floor structure comprises a plurality of steel beams 4 arranged in parallel, each steel beam 4 including a web, an upper flange disposed at an upper end of the web, and a lower flange disposed at a lower end of the web, a floor surface being formed on the upper flange 2. The floor structure further includes a displacement preventing spacer interposed between the upper flanges and/or lower flanges of the adjacent steel beams. The displacement preventing spacer includes a load receiving part which is brought into engagement with the adjacent upper flanges and/or lower flanges to receive an active load incurred by the individual steel beams 4 so as to inhibit the steel beams 4 from displacing downward.

Abstract: A construction of a floor slab bridge includes a plurality of columnar H-shaped steels each disposed between adjacent bridge legs and arranged in side-by-side relation with an end face of a lower flange abutted with a corresponding end face of the adjacent columnar H-shaped steel. A lower concrete layer is formed by placing concrete in a space defined between the upper and lower flanges and between adjacent web plates through a concrete inlet port formed between the adjacent upper flange, and an upper concrete layer is formed by placing concrete on the upper flange. An iron reinforcement is horizontally disposed on the upper flanges, and an iron reinforcement is suspended in the space from the horizontal iron reinforcement through the concrete inlet port.

Abstract: A detergent composition comprising fired ceramic bodies containing detergent effective amounts of sodium oxide and potassium oxide.

Abstract: A detergent composition comprises a fired ceramic body, which carries as effective ingredients sodium oxide and potassium oxide thereon. Sodium metaphosphate and/or calcium oxide may also be carried as optional ingredient(s). The fired ceramic body may be made of a ceramic material formed primarily of silicon oxide and aluminum oxide. Preferably, the detergent composition may be in the form of granules and may be enclosed in a container defining apertures through a wall thereof. These apertures are dimensioned so that the granular detergent composition are prevented from being lost therethrough. A granular detergent composition can be produced, for example, by adding sodium oxide and potassium oxide to a ceramic material, adding water to the resulting dry ceramic powder, kneading and forming the resulting mixture into a green body of a predetermined shape, drying the green body, firing the thus-dried green body at 500.degree. C. to 700.degree. C.

Abstract: A construction of a floor slab bridge includes a plurality of columnar H-shaped steels each disposed between adjacent bridge legs and arranged in side-by-side relation with an end face of a lower flange abutted with a corresponding end face of the adjacent columnar H-shaped steel. A lower concrete layer is formed by placing concrete in a space defined between the upper and lower flanges and between adjacent web plates through a concrete inlet port formed between the adjacent upper flange, and an upper concrete layer is formed by placing concrete on the upper flange. An iron reinforcement is horizontally disposed on the upper flanges, and an iron reinforcement is suspended in the space from the horizontal iron reinforcement through the concrete inlet port.