Metal superstructure bridge with welded by
(57) Abstract:The invention relates to the field of bridge engineering, in particular to the design of the metal superstructure of the bridge with a seamless way. Metal superstructure bridge with welded by contains two main farm, related links and relies on support through the movable and stationary support part, roadway, consisting of ballastless bridge deck in the form of a flat concrete blocks attached to them rails and longitudinal beams, pribalenych attached to the nodes of the driving belt of the main trusses transverse beams. Blocks at site 1 of the superstructure is rigidly connected with the longitudinal beams, and at site II laid on longitudinal beams through a pad of friction material with a device on the bottom surface of the block of metal embedded parts, equipped with limit switches. Technical result provided by the invention, consists in the reduction in the rails jointless tracks the longitudinal force resulting from the joint work of the superstructure and rails from changes in ambient temperature and avoid large gaps in the field of accidental fracture of rails. 4 silt. the build a lattice structure, having two main farm with relationships between them and the roadway, consisting of ballastless bridge deck (made of flat blocks of reinforced concrete slab and connected to the nodes of the driving belt farms transverse beam supported on longitudinal beams, which are fixed blocks slabs  . The disadvantage of this solution is the large temperature longitudinal force in the rails jointless tracks mounted on reinforced concrete slab along the entire length of the superstructure due to the joint work of the superstructure and rails.Known solution  was chosen for the prototype on which to exclude collaboration metal superstructure having two main farm with connections between them, resting on the supports through the movable and stationary support part, and the roadway of the ballast bridge deck on the cross and longitudinal and transverse beams, the length of the span of more than 15 m connection of the deck with longitudinal beams roadway arranged longitudinally movable. The disadvantage of this solution in a significant gap in place of random kink rail at low temperatures in the absence of pinning mateyunas jointless tracks on the bridge. Arranged to prevent this surge devices in rail tracks, providing free deformation of the rails on the bridge, cause difficulties in operation.The objective of the invention is the reduction in the rails continuous jointless tracks on the bridge longitudinal force resulting from the joint work of the superstructure and rails ballastless slab bridge deck from changes in ambient temperature, avoiding large gaps in the field of accidental fracture of rails, at the expense of the device longitudinally-movable joint concrete slab ballastless bridge deck and the longitudinal beams of the roadway on the length of the superstructure from its end resting on the movable support parts. This is achieved due to the fact that the metal span building bridge with welded by containing two main farm with relationships between them and the roadway of ballastless bridge deck, the longitudinal and transverse beams supported on the supports through the movable and stationary support part, on the length of the superstructure from its end resting on the movable support parts, concrete slab baseballist is a, moreover, in places bearing plate through the spacer installed side limiters from the transverse displacements of the plate, and the rest of the length of the superstructure plate fixed to the longitudinal beams rigidly.In Fig. 1 shows a diagram of the proposed superstructure, the facade of Fig. 2 - cross sections a-a and b-b of Fig. 3 node a in Fig. 2; Fig. 4 - node B in Fig. 2.Metal superstructure bridge with welded by contains two main farm 1, which are interconnected by the links 2 and resting on the supports through 3 mobile and stationary 4 basic parts, roadway, consisting of ballastless bridge deck in the form of a flat concrete blocks 5 mounted on them rails 6 and the longitudinal beams 7, pribalenych attached to the nodes of the driving belt of the main trusses transverse beams 8, and blocks 5 at site 1 of the superstructure is rigidly connected with the longitudinal beams 7 by means of high strength bolts 9, tighten after hardening of the cement-sand mortar 10, the site II laid on longitudinal beams 7 through the installation of antifriction material 11 with the device on the bottom surface of the block 5 metal embedded parts 12, with ogranicite, for example, raising the temperature of the superstructure 1 is extended in the direction of the movable support parts 3 and at site 1 of the superstructure there are the forces of interaction between the rails 6 and spans 1, leading to the emergence of the longitudinal force in the rail 6, while in section II due to the lack of interaction forces efforts in the rails 6 does not occur, and the magnitude of the disclosure gap accidental fracture of the rail is limited due to the presence on site 1 hard links between the rails 6 and the longitudinal beams 7 of the superstructure.The proposed structure of the metal superstructure gives the chance to reduce the rails continuous jointless tracks on the bridge longitudinal force resulting from the joint work of the superstructure and rails ballastless slab bridge deck from changes in ambient temperature, avoiding large gaps in the field of accidental fracture of rails, thus increasing the reliability and safety of operation of the facility.Sources of information:
1. Bridges and tunnels on the Railways. Ed. by C. O. Osipov, M., Transport, 1988, S. 367.2. Standards for the design of bridges Germany DS 820/820 01 Deut the two main farm, interconnected resting on a support through the movable and stationary support part, and a roadway consisting of ballastless bridge deck in the form of a flat concrete blocks attached to them rails and longitudinal beams, pribalenych attached to the nodes of the driving belt of the main trusses transverse beams, characterized in that the length of the superstructure from its end resting on the movable support parts, concrete slab ballastless bridge deck laid on longitudinal beams through seals made of antifriction material, in places the bearing plate through the spacer installed side limiters from the transverse displacements of the plate, and the rest of the length of the superstructure plate fixed to the longitudinal beams rigidly.
FIELD: pavement building and repair, particularly expansion joint construction.
SUBSTANCE: method involves filling gap between beams above sealing padding with cold mastic comprising at least two liquid dence oil products, namely products of propane oil residue deasphalting, bitumen, tar, mazut, gas-oil, lube fraction and naphtheno-aromatic hydrocarbons taken in amount of 48.0 - 80.0 % by weight, colloidal solution of acrylic acid ester copolymer with butadiene, styrene, acrylonitrile and/or vinylpyridine copolymer with butadiene and styrene and/or vinyl- and vinylidene chloride copolymer with butadiene and/or polyisoprene and/or butyl rubber and/or poly isobutylene and/or styrene and/or butadiene nitrile and/or polyvinylchloride and/or polyacrylamide and/or ethylenpropylene chlorosulphuretted polyethylene and/or carboxylated polymer and/or urethane polymer taken in amount of 10.0 - 26.0 % by weight, remainder - mineral component; hardening cold mastic; filling upper space between beams with hot mastic. Expansion joint includes sealing padding and cold mastic formed of material including at least two liquid dense oil products, namely products of propane oil residue deasphalting, bitumen, tar, mazut, gas-oil, lube fraction and naphtheno-aromatic hydrocarbons taken in amount of 48.0 - 80.0 % by weight, colloidal solution of acrylic acid ester copolymer with butadiene, styrene, acrylonitrile and/or vinylpyridine copolymer with butadiene and styrene and/or vinyl- and vinylidene chloride copolymer with butadiene and/or polyisoprene and/or butyl rubber and/or poly isobutylene and/or styrene and/or butadiene nitrile and/or polyvinylchloride and/or polyacrylamide and/or ethylenpropylene chlorosulphuretted polyethylene and/or carboxylated polymer and/or urethane polymer taken in amount of 10.0 - 26.0 % by weight remainder - mineral component.
EFFECT: increased service life of bridge passing.
3 cl, 4 dwg
FIELD: building, particularly to built and repair highway bridges and to create control joints thereof.
SUBSTANCE: control joint comprises metal covering sheet fixedly located on rubber support from one side of vertical joint plane and movably laid on Teflon pier from another covering sheet side. The pier is arranged from bridge abutment side. Angle profiles having lower flanges facing each other are anchored in span structure from both sides of vertical joint plane correspondingly. The joint also has at least two cushioning metal net layers inserted between the angle profiles and above covering sheet and connected to vertical flanges of angle profiles by metal net ends. The cushioning metal nets are preferable resilient and/or pre-stressed by supports made as metal bars. The cushioning metal net has openings of not less than 15×15 mm dimensions and the nets are spaced apart a distance equal to not less than half of the net opening dimension. The cushioning metal nets are parallel to metal sheet and located in polymer-bitumen mastic layer laid on the metal sheet.
EFFECT: increased deformation capacity, simplified structure, improved reliability and maintainability.
4 cl, 2 dwg
FIELD: control joints, particularly packing of metal and plastic or elastic materials for joint forming.
SUBSTANCE: assembly comprises the first profiled member secured to one edge of the first concrete panel and the second profiled member fastened to one edge of the second concrete panel. The profiled members are connected with each other by removable connection strips so that a gap is created between the profiled members. The profiled members and the connection strips define single continuous extruded profile unit formed of aluminum. Connection strip edges are fastened to profiled members by means of ultra-thin bridges, which maintain connection between profiled members during panel casting operation. Control joint assembly is installed at design height on concreting base before panel casting. During panel casting connection strips cover gaps between profiled members and prevent gap filling with concrete. After concrete hardening the connection strips are separated from the panel and the gaps are filled with elastic sealant. The first profiled member is used as mold for control joint forming and is made so that concrete panels may be cast from different control joint sides the at any time.
EFFECT: increased efficiency.
9 cl, 3 dwg
FIELD: construction of bridges and overpasses, particularly span assemblies.
SUBSTANCE: joint structure comprises composite slab ribbed girders with transversal monolithic reinforced concrete joints and connection slab spaced from girder ribs in over-pier areas. The connection slap is supported by girder ribs in support areas of connection slab ends and is spaced from girder slab along span assembly length. Vertical pads, for instance made of steel and rubber, are laid in the created spaces. The slab is connected to girder slab in longitudinal direction by means of horizontal rods arranged in connection slab and girder slab bodies or in transversal monolithic joints of composite slab ribbed girders and made as a single whole therewith along girder lengths. Horizontal rods in vertical spaces have protective resilient coverings. Connection slab length is to be not less that distance between axes of adjacent girder support areas. In the case of connection slab length insufficient for horizontal rod embedding in it adjacent rods located in single plane are connected with each other. In periods characterized by higher ambient temperature vertical pads are located in lower parts of vertical spaces. In periods with low ambient temperature and in the case of insufficient connection slab length vertical pads are arranged for the full length of connection slab.
EFFECT: reduced construction costs, increased reliability of join structure.
4 cl, 5 dwg
FIELD: construction, particularly to erect cast-in-place building structures, namely bridge and tunnel roadway pavings and other elongated structures, without control joints.
SUBSTANCE: contraction joint comprises partition extending for the full reinforced concrete member cross-section length and transversal reinforcement. Longitudinal reinforcement is made as continuous bars in member cross-section near the joint. Partition is made as sheet transversal to longitudinal reinforcement direction and provided with anchors connected to one sheet side. Contraction joint also has additional reinforcement anchors fastened in pairs to all continuous bars of longitudinal reinforcement so that each additional anchor is located from each side of the partition and spaced 1a distance from it. The distance 1a is determined from condition of comparability of total continuous reinforcement bar resiliency value determined in above area with resiliency of reinforced concrete member having L length. Cross-sectional area Fr of all continuous reinforcement bars is determined from condition of compatibility of separate longitudinal reinforcement tensile strength and total reinforced concrete member tensile strength, wherein reinforced concrete member cross-sectional area is equal to fb. Summary area Fr of continuous longitudinal reinforcement bars and length la of the area is determined from corresponding relations.
EFFECT: increased reliability and service life of elongated monolithic building structures erected without control joints.
2 cl, 8 dwg
SUBSTANCE: in a covering assembly (1) for a contraction joint (2) located between an abutment (3) and a deck (4) in a passageway structure. The abutment and the deck have cavities (8) adjoining the contraction joint and filled with polymer concrete wherein a restraint section (16) of each metal edge profile (14). Between two edge profiles there is an elastic sealing profile (27) attached thereto for sealing. A toothed profile (21) is attached to the surface of each regional profile (14). It has a surface (22) which ends with surfaces (11, 12) of polymer concrete (10) and road carpet (6) with its teeth interlocking those of another gear profile. The restraint sections (16) of the edge profiles (14) have gaps (25) filled with polymer concrete (10).
EFFECT: possibility to cover the contraction joints of greater effective range.
16 cl, 2 dwg
SUBSTANCE: temperature joint of bridge crossing of road bed includes an insert from two-component mastic compound, which is attached to beam webs of bridge crossing, spring element arranged in two-component mastic compound and attached to beams of bridge crossing and made in the form of bent plate, the generatrixes of which are arranged in vertical plane.
EFFECT: increasing service life of bridge crossing at simultaneous possibility of increasing its movement value.
13 cl, 8 dwg
SUBSTANCE: invention relates to design of expansion joints (EJ) of comb and modular comb types used in bridge engineering. An EJ covered with combed fingers 1, between which there are elastic comb plates 3, having a stepped shape. Lower parts 4 of elastic comb plates 3 are rigidly fixed between a bearing beam 5 and comb fingers 1, with the help of the already installed bolt connection 7. Elastic comb plates 3 are formed into sections, with the help of a flat plate 8, comprising lower parts 4 of elastic comb plates 3.
EFFECT: safe passage of bicycle transport along an expansion joint and protection against penetration of snow, ice, garbage, gravel and crushed stone under an expansion joint, considerable increase of functionality of expansion joints by perception of transverse displacements and turns in plan of spans, and prevention of freezing and damage of comb fingers.
11 cl, 10 dwg
SUBSTANCE: deformation joint is made of three standard sections 125×125×12, of closed type, closes the gap between spans on motor road bridges and overbridges. Angles are arranged with formation of a transverse tray for removal of water, one of which is a support one, and two other ones are arranged as capable of sliding of angles relative to each other for the possibility of free movement of spans.
EFFECT: tray design eliminates moisture ingress to lower structures of bridge supports.
FIELD: technological processes.
SUBSTANCE: invention relates to a device for strapping of a deformation joint between two parts of a structure. The device includes at least two joint profiles for attachment of an elastic strap sealing a deformation joint at least partially, which can be fixed with an anchor structure on the corresponding part of the structure. Besides, the invention relates to a shaped structure for such a device and to a method for obtaining joint profiles.
EFFECT: joint profiles have a wave shape in a longitudinal direction of an FLR joint, match each other when in a laid state and at least partially hang above the deformation joint.
25 cl, 13 dwg
SUBSTANCE: pedestrian span structure of the bridge with multi-braced main trusses of composite materials includes at least two multi-braced main trusses, the belts of which are made of angles and strips of the rectangular cross-section. The braces are made of one or more strips of the rectangular cross section, located on their wide sides in vertical planes parallel to the common plane of the truss, so that in the joints the parts of the belts and the braces are layered in different planes and bolted directly, without gussets; at least two transverse connections connecting the multi-braced main trusses; bearing bridge bed elements supported by the multi-braced main trusses and consisting of longitudinal ribbed panels fastened together and transverse beams. The bearing bridge bed elements are located at the structure bottom level, are made of composite materials, and the longitudinal ribbed panels are connected to the lower belts of the multi-braced main trusses and the transverse beams.
EFFECT: increasing the structure reliability and durability.