Team composite design carriageway road bridge

 

The invention relates to the field of construction and is intended for use as a composite team designs carriageway road bridge. Team composite design carriageway road bridge includes metal cross beams are combined in collaboration with the team of the concrete slab. What is new is the fact that the team reinforced concrete slab of the carriageway over the transverse metal beam made of composite of two mounted with clearance relative to each other with an angled downwards and towards each other with ends fixed on them by stops in the form of metal plates United by welding with rods of the upper and lower working rebar concrete slab of the carriageway, with the top shelf metal cross beam and each other in the level of the center of gravity of the upper rods of the working valve via a connecting metal strips, located in the plan along the axis of the metallic cross beams between the nodes connecting lugs with the upper rods of the working valve and welded to the opposite ends of the lugs parts of precast reinforced concrete slabs priesgaisrines stiffness team composite construction of the roadway, reliability and endurance of uniting metallic cross beams with precast reinforced concrete slab of the carriageway. 2 Il.

The invention relates to the field of construction and is intended for use as a composite team designs carriageway road bridge.

Known team composite design carriageway road bridge, including metal beams with the upper belt in the form of brand, on a horizontal shelf which is welded lugs, located in the Windows laid on the belt metal beams precast concrete slabs and filled with concrete concreting (see Gibshman E. E. and other Bridges and structures on roads, ch. II, M., publishing house "Transport", S. 55, Fig.26a).

Lack of team composite structures carriageway road bridge is a discrete Union of metal beams with precast reinforced concrete slab of the carriageway.

The prototype of the invention is the modular composite construction carriageway road bridge, including metal cross beams are combined in collaboration with the team of the concrete slab (see the Noah composite structures carriageway road bridge is a small Flexural rigidity, the reliability and endurance of the Association of metal beams with precast reinforced concrete slab of the carriageway.

The invention is directed to increasing the Flexural rigidity of the composite team design the roadway, reliability and endurance of uniting metallic cross beams with precast reinforced concrete slab of the carriageway.

The solution is achieved by the fact that the national team composite structures carriageway road bridge, including metal cross beams are combined in collaboration with the team of the concrete slab, precast concrete slab of the carriageway over the transverse metal beam made of composite of two mounted with clearance relative to each other with an angled downwards and towards each other with ends fixed on them by stops in the form of metal plates United by welding with rods of the upper and lower working rebar concrete slab of the carriageway, with top shelf metal beams and each other in the level of the center of gravity of the upper rods of the working valve via a connecting metal strips, arranged in a plane along the axis of the metal is the opposite stops of the parts of the concrete slab of the carriageway, the space between them is filled with concrete.

In Fig. 1 shows a top view of team composite design carriageway road bridge, Fig.2 - section a-A.

Team composite design carriageway road bridge includes a metal cross beam 1, are combined in collaboration with the team of the concrete slab 2, 3 roadway performed on transverse metal beam 1 split of the two installed with a gap relative to each other of the parts 2 and 3 with beveled downward and towards each other with ends secured to them by the stops 4 and 5 in the form of metal plates United by welding with the upper rods 6 and 7 the lower working rebar concrete slab of the carriageway 2, 3, with top shelf metal cross beams 1 and between a level of the center of gravity of the rod 6 upper operating the valve through the connecting metal strips 8, which are located in a plane along the axis of the metallic cross beam 1 between nodes 9 and 10 of the connection lugs 4 and 5 with the rod 6 upper working rebar and welded to the opposite ends of the lugs 4 and 5, parts 2 and 3 of precast reinforced concrete slab of the carriageway, and pretranslate road bridge as follows. On a metal cross beam 1 is placed with a gap relative to each other part 2 and 3 of precast reinforced concrete slab of the carriageway with beveled downward and towards each other with ends secured to them by the stops 4 and 5 in the form of metal plates United by welding with the upper rods 6 and 7 the lower working rebar concrete slab of the carriageway 2, 3.

Tauri welds (Fig.1 and 2 is not shown) stops 4 and 5 successively welded to the top shelf metal cross beam 1. At the level of the center of gravity of the rod 6 upper operating the valve through the connecting metal strips 8, which are located in a plane along the axis of the metallic cross beam 1 between nodes 9 and 10 of the connection lugs 4 and 5 with the rod 6 upper working valves, stops 4 and 5 combine Tauri welds on the ends of the metal strips 8. The space between the lugs 4 and 5 are filled with concrete 11.

Longitudinal, continuous length of metal cross-beam 1 combining the stops 4 and 5 with the upper zone of the beam 1 increases its Flexural rigidity of the inclusion in the joint work. Convenience welding of t-welds increases the reliability and endurance join team gelatobaby by a transverse force.

Claims

Team composite design carriageway road bridge, including metal cross beams are combined in collaboration with the team of the concrete roadway slab, characterized in that the team reinforced concrete slab of the carriageway over the transverse metal beam made of composite of two mounted with clearance relative to each other with an angled downwards and towards each other with ends fixed on them by stops in the form of metal plates United by welding with rods of the upper and lower working rebar concrete slab of the carriageway, with top shelf metal cross beam and each other in the level of the center of gravity of the upper rods of the working valve via a connecting metal strips, arranged in a plane along the axis of the metallic cross beams between the nodes connecting lugs with the upper rods of the working valve and welded to the opposite ends of the lugs parts of precast reinforced concrete slab of the carriageway, and the space between them filled with concrete.

 

Same patents:

The invention relates to the field of bridge engineering and can be used in steel and concrete spans of bridges to join the team reinforced concrete slab of the carriageway with the steel

The invention relates to the field of construction, mainly to areas such as the bridge, the construction of containers, the construction of high-rise and long-span buildings, towers, smokestacks, cooling towers, underground and underwater objects and t

The invention relates to the field of construction and can be used in the construction of reinforced concrete bridges

The invention relates to the field of construction mainly bridges and other transportation structures on highways

The superstructure // 2162909
The invention relates to a bridge and can be used in the construction of superstructures for bridges, overpasses and viaducts

The invention relates to a bridge

The invention relates to a bridge

The invention relates to the field of construction, namely, the structures of the elements of the bridge spans from metal and concrete

The invention relates to the field of bridge engineering and can be used in steel and concrete spans of bridges to join the team reinforced concrete slab of the carriageway with the steel

The invention relates to a bridge and can be used in steel and concrete spans of bridges to join a monolithic concrete slab with the steel

FIELD: bridge building, particularly preloaded continuous composite bridge structured of steel and reinforced concrete to connect cast-in-place reinforced concrete panel with metal assembly.

SUBSTANCE: span structure includes reinforced concrete panel connected to steel beam by rests embedded in panel body and welded to steel sheet secured to beam. Steel sheet is connected to steel beam belt by high-strength bolts inserted in belt orifices. Orifices have circular shapes in over-pier zone, remainder orifice parts are oval and located so that major oval axis extends along longitudinal span structure axis. Lengths of oval orifices are variable and depend on degree of elastic deformation due to applying squeezing force to reinforced concrete. The greatest length is in preloaded reinforcement anchoring area and length is reduced towards over-pier zone. Ratio between maximal length a of oval orifice to length b of orifice located in over-pier zone and having minimal length a/b = 1.0 - 4.0. High-strength bolts inserted in oval orifices are closed with protective caps to protect bolts against concrete action. Cap contour mates to oval orifice outline. Method of span structure production involves concreting reinforced concrete panel and applying tensioning force to high-strength reinforcement on steel sheet having rests welded thereto and connected to steel beam, wherein steel sheet is connected to steel beam by high-strength bolts inserted in oval orifices and bolts are slackened before reinforcement tensioning. After that reinforced concrete panel resiliently reduces in length on beam belt under the influence of squeezing force and bolts slide along longitudinal orifice. Then protective caps are taken off and blots are tightened with desired force.

EFFECT: prevention of concrete stretching in over-pier area; increased strength and crack-resistance of reinforced concrete panel; increased service life of span structure.

2 cl, 4 dwg

FIELD: bridges, particularly for water crossing and erection technique for bridge building.

SUBSTANCE: method for bridge building involves forming filled support areas for building slipways adapted for assembling large sections of bridge span structure, wherein support areas are arranged along borders of water barrier to be crossed, for instance along banks of river or slopes of ravine, and extends beyond the borders, wherein bridge span structure is formed of single-way panel; arranging each bridge span structure by means of sliding carriers on support member rotated relative vertical axis and located on the support area, wherein support member has previously increased load-bearing capacity; turning sliding carriers by hydraulic jacks relative support members, wherein sliding carriers hold large sections having T-shaped cross-sections so that longitudinal axes thereof coincide one with another in plane and a gap of uniform width is formed between edges thereof facing each other; installing insertion panel in the gap; connecting the insertion panel with T-shaped sections to form single span structure. Projections of T-shaped sections facing each other are formed to provide greater moment in comparison with that created by opposite projections and the moment is compensated before sliding carrier rotation, for instance by counterweights or jacks.

EFFECT: increased building speed and reliability.

5 cl, 2 dwg

FIELD: bridge building, particularly railroad bridge span structure erection of precast panels.

SUBSTANCE: bridge panel includes steel sheet, supports made as vertical sheet plates with slots for receiving reinforcement welded to the sheet and embedded in it. Panel has rods inserted in plate orifices in addition to the lower reinforcement. Rod axes are located above steel sheet surface and spaced a distance from it. The distance is determined from a given relation. Steel sheet may be pressed to steel bridge beam belt during welding of the supports.

EFFECT: increased safety against failure and durability of panel connection with steel bridge beam belt, which are equivalent to that of cast-in place panels.

2 cl, 2 dwg

FIELD: bridge building, particularly span structures for reinforced concrete bridges.

SUBSTANCE: motor road bridge comprises piers and one or several continuous reinforced concrete span structures installed on piers and including ribs extending in transversal span direction. The bridge also has roadway panel and reinforced concrete balustrade. Extreme ribs and balustrade are formed as single vertical load-bearing member. The balustrade is split and has through joints in zero moment zone between piers. The joints divide span structure into above-pier parts arranged in negative moment zone over piers and central parts arranged in positive moment zone. Method of bridge construction involves erecting abutment and intermediate piers; forming temporary piers in area of composite span structure sections connection; mounting span structure sections and grouting thereof. Span structure division into sections in longitudinal direction is carried out in correspondence with bridge division into over-pier and central parts. Central part lengths are equal to that of central parts of span structure. Over-pier section length within the boundaries of reinforced concrete balustrade is equal to over-pier part length, wherein within the bounds of lower rib and roadway panel the length is decreased for value a. The a is determined from prestressed reinforcement rod bundle anchor location conditions and adjacent sections reinforcement joint convenience.

EFFECT: increased load-bearing capacity of span structure, reduced material consumption due to decreased number of span structure beams.

3 cl, 8 dwg, 1 ex, 1 tbl

FIELD: bridge building, particularly span structures for reinforced concrete bridges.

SUBSTANCE: span structure have cross section including ribs, passage panel and reinforced concrete balustrade. Ribs, which are extreme in cross-section and reinforced concrete balustrade are made as single vertical load-bearing members.

EFFECT: reduced material consumption due to reduced number of span structure beams.

3 dwg, 1 tbl

FIELD: bridge building, particularly span structures of reinforced concrete bridges.

SUBSTANCE: beam comprises ridge and panel arranged in height-central rib part. The panel is located from both rib sides. Upper rib part projecting over the panel forms bridge balustrade. Reinforcement frames are continuous over the all rib height and all panel width and crossing each other.

EFFECT: reduced number of beams in span structures.

1 dwg

FIELD: bridge building, particularly composite span structures.

SUBSTANCE: span structure comprises separate composite panels arranged in cross-section thereof and connected one to another by joints. Span structure also has roadway bed laid on upper panel surfaces. Roadway bed is made of monolithic water-impermeable concrete, joints are formed as separate rigid metal connections including built-in metal members. The metal members are arranged in adjacent panels one opposite another and are joined by connection mounting metal member so that the metal member passes into roadway bed body. Distance between rigid metal connections in span structure length is defined by a given relation.

EFFECT: increased operational reliability and increased load-bearing capacity thereof.

3 cl, 3 dwg

FIELD: building, particularly to construct bridges characterized by a combination of structures.

SUBSTANCE: method involves producing and mounting main steel beams; producing, mounting and joining composite reinforced concrete bridge panel members of roadway including steel connection members; joining the connection members to main steel beams with the use of high-strength bolts. Bridge roadway panel is produced in two stages. First of all composite reinforced concrete members are mounted. Then cast-in-place reinforced concrete layer and leveling layer are laid on the bridge roadway panel members, wherein composite members are joined by free contact operation without reinforcement connection. Composite reinforced concrete members have thicknesses less than total thickness of bridge roadway panel. Cast-in-place concrete layer thickness is determined from corresponding relation. Composite reinforced concrete member for composite span structure construction comprises panel as viewed in plane. The panel has ends with lengths equal to span structure width, stiffening ribs formed along panel ends, steel connection members of double-tee sections directed parallel to panel sides. Connection member has welded upper belt and lower belt including two angle members connected to wall by high-strength bolts and provided with orifices to connect thereof to main beam of span structure with high-strength bolts. Connection reinforcement is formed on upper panel surface. Stiffening ribs are displaced relatively panel end for distance determined from corresponding relation. One stiffening rib is displaced outsides and defines groove, other stiffening rid is displaced insides and creates extension to joint composite members one to another. The steel connection members are located between the stiffening ribs and have heights exceeding that of stiffening ribs.

EFFECT: improved technological efficiency of bridge construction due to possibility to solve joint grouting problem.

4 cl, 5 dwg, 1 ex

FIELD: building, particularly to erect small-scale and medium-scale bridges over rivers, rail roads, overpasses, to construct span sections of overpasses, trestles and floor structures.

SUBSTANCE: method for span structure erection by metal part mounting and by following reinforced concrete section connection involves mounting metal part of at least two mounting units, wherein each mounting unit is composed of two spaced apart metal main tubular beams so that distance between tubular beams is equal to tubular beam diameter and tubular beams are connected with each other by arch-shaped shell formed of tube half having diameter equal to tubular beam diameter, mounting units are connected with each other by two overlapped arch-shaped connection members extending along main beam sides; installing tension bars in each tubular beam; arranging transversal ties in each arch-shaped shell so that transversal ties and tension bars are arranged in horizontal planes, spaced apart along unit length and connected with each other in cross-section to create integral transversal links in the unit; installing stiffening members with central orifices inside each main beam; welding rod-like thrusts to upper mounting unit surface in staggered order; connecting mounting units with each other by overlapping two arch-shaped connection members one to another to create single arch-shaped shell having diameter equal to main beam tube diameter. Reinforced concrete section is solid.

EFFECT: simplified structure, reduced time of bridge erection in difficult-to-access areas.

3 cl, 10 dwg

FIELD: building, particularly to erect small-scale and medium-scale bridges over rivers, rail roads, overpasses, to construct span sections of overpasses, trestles and floor structures.

SUBSTANCE: span structure comprises main metallic tubular beams and metal arch-shaped shells installed between the tubular beams and connected to them, as well as reinforced concrete section connected to main beams by means of thrust members. Main tubular beams are united in at least two mounting units. Each unit comprises at least two spaced apart main tubular beams so that distance between tubular beams is equal to tubular beam diameter. The tubular beams are connected with each other by arch-shaped shell formed of tube half having diameter equal to tubular beam diameter. Mounting units are connected with each other by two overlapped arch-shaped connection members extending along main beam sides and forming arch-shaped shells made as tube halves. The arch-shaped connection members have arch lengths exceeding quarter of tubular beam perimeter. Tension bars are installed in each tubular beam. Transversal ties are arranged in each arch-shaped shell so that transversal ties and tension bars are arranged in horizontal planes and spaced apart along unit length and connected with each other in cross-section to create integral transversal links in the unit. Stiffening members with central orifices are located inside each main beam in thrust parts thereof. Besides, each mounting unit has rod-like thrusts welded to upper mounting unit surface in staggered order so that the thrusts are transversal to above surface. Reinforced concrete section is solid.

EFFECT: simplified structure, reduced time of bridge erection in difficult-to-access areas.

2 cl, 5 dwg

Up!