摘要:
An arch bridge system including first and second side walls, a foundation, and arch beams. The first and second side walls each include side wall sections supported by the foundation and aligned along the width of the system. Adjacent side wall sections form a column therebetween that defines an interior void extending along a height of the column. A first end of each arch beam is supported at the first side wall at an upper portion of one of the columns and a second end is supported at the second side wall at an upper portion of another one of the columns. Each interior void has reinforced concrete forming cast-in-place columns defining rigid, fixed, monolithic connections between the foundation, the first and second side walls, and the plurality of arch beams. A method of producing an arch bridge system is also disclosed.
摘要:
A steel-concrete composite bridge deck slab using inverted U-shaped shear connectors and a method for constructing the same. The steel-concrete composite bridge deck slab includes a bottom steel plate and a bridge deck concrete layer, wherein inverted U-shaped perforated steel plate units are arranged on an upper surface of the bottom steel plate, and bar-mat reinforcements are arranged at upper ends of the inverted U-shaped perforated steel plate units.
摘要:
A segment-assembled type pier column member with a steel-concrete composite structure includes a reinforcement tube embedded in a pile cap, wherein the reinforcement tube is connected with a bottom of a lower segment of a hollow steel tube pier and is poured with concrete, and pier columns in upper and lower segments are reinforced by means of segment connecting and being embedded with local reinforcing meshes. A steel cross beam is connected with an upper segment of the hollow steel tube pier in an assembled way. A pre-stressed tensioning duct is reserved between the steel cross beam and the pier column in the upper segment.
摘要:
A construction method of a steel composite girder bridge includes installing steel girders on piers and forming shearing connectors on the steel girders at intervals of a predetermined distance, installing stagings and a first form for casting deck concrete in the steel girders, installing non-composite members in an upper flange of the steel girders to form each non-composite section of supporting points, installing a second form around each of the shearing connectors to form a shearing pocket, arranging sheath pipes in the supporting points and forming supporting point decks by casting and curing concrete, applying pre-stress to each section of the supporting point decks through the sheath pipes and performing a grouting process, forming span decks adjacent to the supporting point decks by casting and curing concrete in each span between the piers, and filling the shearing pockets with non-shrinkage mortar.
摘要:
The present invention pertains to a composite girder for bridge construction. More preferably, a girder is formed in a rectangular shape that is horizontally long and opened at the top portion thereof, wherein the girder is convexly curved in the center so as to be formed in the shape of an arch. The girder has a compression section, a web and a tension section, which are integrally composed together; and is filled with concrete inside the girder so as to increase the sectional strength of the girder. Therefore, it is possible to reinforce a support that receives a great shearing stress even without the use of any rebar. Simultaneously, a stopper is formed on the inside surface of the compression section to prevent the separation of the steel materials and the concrete. Therefore, compared with the existing girders, the composite girder of the present invention may be mounted over a noticeably long span. In addition, it is possible to reduce manufacturing costs by minimizing the use of expensive steel reinforcement materials, exhibiting sufficient strength characteristics in spite of a small dead load.
摘要:
A composite a deck system having a deck component and a concrete component. The deck component of the present invention includes deck sections, each having a longitudinally-extending rib with spaced apart sidewalls connected to a top wall. At the opposing ends of the sidewalls can be included side edges or webs having upturned flanges with an opening or openings along the flanges that are dimensioned to facilitate composite action between the deck sections and the concrete. The system includes a first deck section, as described, adjacent to a second deck section, wherein the side edges of the first and second deck sections are in juxtaposed relation. These deck sections can be combined with concrete to form a composite deck.
摘要:
A composite a deck system having a deck component and a concrete component. The deck component of the present invention includes deck sections, each having a longitudinally-extending rib with spaced apart sidewalls connected to a top wall. At the opposing ends of the sidewalls can be included side edges or webs having upturned flanges with an opening or openings along the flanges that are dimensioned to facilitate composite action between the deck sections and the concrete. The system includes a first deck section, as described, adjacent to a second deck section, wherein the side edges of the first and second deck sections are in juxtaposed relation. These deck sections can be combined with concrete to form a composite deck.
摘要:
A modular column system and a method of constructing the same are constructed by stacking at least one precast unit between a foundation section and a coping section. The precast unit makes use of an internally confined hollow column unit fabricated in advance, and joint sections between the precast units are firmly formed. Thereby, the modular column system can realize a short construction period and economy because reinforcement bars and forms are not used, as well as high resistance to bending moment and reduction in cross section and self-weight of the precast unit, and thus the modular column system can provide easier and more economical assembly, and prevent brittle fracture of the joint section between the precast units.
摘要:
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.
摘要:
The invention provides a floor slab bridge structure capable of enhancing that strength, with which bridge girders and concrete bridge piers are rigidly joined, effectively suppressing expansion and contraction, deflection, and distortion of the bridge girders, and synergistically enhancing the strength of connection concrete itself against the expansion and contraction, distortion, etc., and being very effective as measures for prevention of collapse of bridge against a large earthquake. Slab concrete is hammer-set between sides of respective bridge girders, which are aligned in a bridge width direction, in a length direction of the bridge girders and 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 being a rigid joining structure, in which the slab concrete and the concrete bridge piers are concrete-joined together through the connection concrete.