DE212018000058U1 - Expansion joint structure of a bridge - Google Patents

Abstract

Expansion joint structure of a bridge, comprising a bridge body and an expansion joint (1), characterized in that the expansion joint is located at one end of the bridge body and divides the bridge body into a first bridge body part (2) and a second bridge body part (3), wherein the first bridge body part is recessed at its end near the expansion joint to form a first support step (21), wherein an end of the first support step remote from the expansion joint is provided with a plurality of first attachment pillars (22) distributed uniformly along the width direction of the bridge body wherein the first mounting posts are perpendicular to the bridge body with one end of the second bridge section body recessed proximate the expansion joint to form a second support step (31), the second support step and the first support step being flush, one of the expansion joint distant end of the second stut The second mounting posts are provided with a plurality of second mounting posts (32) distributed equidistantly along the width direction of the bridge body, the second mounting posts being perpendicular to the bridge body with lower ends of each of the first mounting posts and each second mounting posts respectively recessed into the first and second bridge section bodies and the upper ends of each of which protrude from the first and second support steps, all of the first attachment posts being in one-to-one correspondence to all the second attachment posts, with side surfaces of the first and second support steps respectively fixed to a C-steel plate (4) are connected and C-grooves of the C-steel plates are arranged opposite on both sides, wherein the upper ends of the first fastening columns and the second fastening columns by an iron wire (5) are interconnected and the lower ends of the first fastening columns and the second An attachment column (6) for a expansion joint, which is provided along the width direction of the bridge body between the first bridge body part and the second bridge body part is arranged, wherein both ends of the connecting part for an expansion joint are respectively clamped in the C-steel plates on both sides, wherein the expansion joint connecting part comprises an upper support body (61) having a downwardly convex arcuate portion and a lower support body (62) having an upwardly convex arcuate portion the upper support body is integrally connected to the lower support body, wherein the upper support body and the lower support body are respectively provided with reinforcing ribs (63) at regular intervals along the direction of the length of the expansion joint connecting portion, and perpendicularly reduce the reinforcing ribs t are oriented to the width direction of the connecting part for an expansion joint, wherein a cover plate (7) is arranged above the expansion joint, an upper surface of the cover plate is flush with an upper surface of the bridge body and the cover plate with the first support stage and the second support stage releasably connected wherein the cover plate comprises a top steel plate layer (71) and a bottom buffer layer (72), wherein the steel plate layer is fixedly connected to the buffer layer, the steel plate layer having a thickness which is 1/4 of the thickness of the buffer layer and right side of the cover plate abut against the first bridge sub-body and the second bridge sub-body, an elastic filling material (8) being filled between the expansion joint and the expansion-joint connecting part.

Description

Field of the invention

The present invention belongs to the technical field of road technology and in particular relates to an expansion joint structure of a bridge.

State of the art

With the continuous development of society and the rapid development of the Chinese economy, the road has also experienced unprecedented development as a lifeline of the country.

Expansion joints are provided at the joints of the bridge and at joints with both ends of the roads to meet the deck deformation requirements of the bridge. In general, expansion joints are provided between the ends of the beams, between the ends of the beams and the abutments or at the hinged positions of the bridges.

It is necessary that the expansion joint in two directions, namely the direction parallel and perpendicular to the axis of the bridge, is freely stretchable and firm and reliable, so that the driving of the expansion joints of a vehicle should be smooth, with no jump and no Noise is generated. Furthermore, the assembly, inspection, maintenance and cleaning of the expansion joints should be easy and convenient.

Once the bridge expansion joint is damaged, it will significantly affect the speed, comfort and safety of the ride and even cause traffic accidents.

However, the structure of the existing bridge expansion joint is not strong enough, and there is a safety risk if the vehicle is driven through for a long time. In addition, the connection of the expansion joints is currently simply connected by steel plates; In this construction, to avoid annoyance, the steel plates are directly fixed, i.e. undetachably joined, and in daily use the expansion joints can not be routinely checked and maintained, which presents a safety risk. Because the steel plates are relatively hard, the expansion joints connected by steel plates have poor ride comfort and jumping can easily occur during the driving process. Therefore, it is of practical importance to form an expansion joint structure which has better bearing capacity and good stability, which meets the requirements for expansion and deformation of the bridge and is durable.

Object of the invention

The technical problem, which is solved mainly by the present invention, is to provide a bridge expansion joint structure which satisfies the road expansion and deformation requirements, has a stable structure, and has a good bearing capacity, a smooth and comfortable feeling during running Provides, and is easy and convenient to install, test and maintain.

In order to achieve the above technical object, the present invention proposes an expansion joint structure of a bridge comprising a bridge body and an expansion joint, wherein the expansion joint is located at one end of the bridge body and divides the bridge body into a first bridge body part and a second bridge body part the first bridge sub-body is recessed at its end near the expansion joint to form a first support step, an end of the first support step remote from the expansion joint being provided with a plurality of first attachment posts distributed uniformly along the width direction of the bridge body; first attachment columns are perpendicular to the bridge body, wherein an end of the second bridge body part is recessed in the vicinity of the expansion joint to form a second support step, wherein the second support step and the first support step are flush, wherein one of the Deh Fugus distant end of the second support stage is provided with a plurality of second mounting pillars which are distributed along the width direction of the bridge body at equal intervals, the second mounting pillars are perpendicular to the bridge body, wherein lower ends of all first mounting pillars and all second mounting pillars respectively in the first and second Bridge sub-body are recessed and the upper ends of each protrude from the first and second support step, wherein all first mounting pillars are in a one-to-one correspondence to all second mounting pillars, wherein side surfaces of the first and second support step respectively connected to a C-steel plate are and C-slots of the C-steel plates are arranged opposite on both sides,
wherein the upper ends of the first attachment pillars and the second attachment pillars are interconnected by an iron wire, and the lower ends of the first attachment pillars and the second attachment pillars are fixedly connected to each other by a chain,
wherein an expansion joint connecting part provided along the width direction of the bridge body is disposed between the first bridge body part and the second bridge body part, both ends of the expansion joint connecting part into the C steel plates on both Sides are clamped, wherein the connecting part for expansion joint comprises an upper support body having a downwardly convex arcuate portion and a lower support body with an upwardly convex arcuate portion, wherein the upper support body is integrally connected to the lower support body, wherein the upper support body and the lower support bodies are respectively provided with reinforcing ribs at equal intervals along the direction of the length of the expansion joint connecting part, and the reinforcing ribs are perpendicular to the width direction of the expansion joint connecting part,
wherein a cover plate is disposed above the expansion joint, and an upper surface of the cover plate is flush with an upper surface of the bridge body, and the cover plate is detachably connected to the first support step and the second support step, the cover plate comprising a steel plate upper layer and a buffer lower layer wherein the steel plate layer is fixedly connected to the buffer layer, the steel plate layer having a thickness that is 1/4 of the thickness of the buffer layer, the left and right sides of the cover plate abutting the first bridge body part and the second bridge body part,
wherein an elastic filling material between the expansion joint and the connecting part for expansion joint is filled.

Furthermore, the first mounting pillar and the second mounting pillar have a mounting pillar of the same structure, which includes a pillar-shaped reinforcing steel in the center and a helical steel wire tightly wound around the outer periphery of the columnar reinforcing steel.

Furthermore, the elastic filler material is a polyurethane sealant, a silicone sealant or a polysulfide sealant.

Furthermore, in each case a stop plate is arranged on the left and right side of the upper support body and the lower support body.

Furthermore, the buffer layer is a crosslinked foamed polyethylene cushion layer.

Furthermore, the distance between adjacent reinforcing ribs is 20 cm to 30 cm.

Furthermore, the numbers of the first attachment pillar and the second attachment pillar are the same and are 8 to 12, respectively.

Furthermore, the width of the steel sheet layer is smaller than the width of the buffer layer.

Furthermore, a lower surface of the buffer layer is formed wave-shaped. Furthermore, the cover plate has a thickness of 0.5 cm to 2 cm.

1. 1. In der vorliegenden Erfindung sind der erste und der zweite Brückenteilkörper jeweils mit einer Vielzahl von ersten Befestigungssäulen und zweiten Befestigungssäulen in gleichmäßigen Abständen entlang der Breitenrichtung des Brückenkörpers versehen, wobei die oberen Enden aller ersten Befestigungssäulen und aller zweiten Befestigungssäulen durch Wicklung des Eisendrahts verbunden sind und deren untere Enden durch eine Kette in einer Eins-zu-Eins-Entsprechung fest verbunden sind, wobei die Länge der Lette größer als die Bereite der Dehnungsfuge ist. Die oberen und unteren Ende der ersten Befestigungssäule und der zweiten Befestigungssäule sind fixiert, wodurch eine stabile Struktur bereitgestellt wird und verhindert werden kann, dass die Dehnungsfuge sich übermäßig verformt und sogar die Bildung eines Risses verursacht, der zum Sicherheitsrisiko führen kann. Das Verbindungsteil für Dehnungsfuge umfasst einen oberen Stützkörper mit einem nach unten konvexen bogenförmigen Abschnitt und einen unteren Stützkörper mit einem nach oben konvexen bogenförmigen Abschnitt, wobei der obere Stützkörper einstückig mit dem unteren Stützkörper verbunden ist, wobei auf der linken und rechten Seite des Verbindungsteils für Dehnungsfuge jeweils eine Anschlagplatte angeordnet ist, wodurch die beiden Enden in die C-Stahlplatten auf beiden Seiten festgeklemmt werden können, um eine Verbindung zu ermöglichen, wodurch eine gute Stabilität sowie eine gute Tragfähigkeit erreicht werden, was die Anforderungen an Ausdehnungen sowie Verformungen des Brückenkörpers erfüllt, so dass die Brücke nicht leicht zu beschädigen ist und die Wartungskosten eingespart werden.
2. 2. In der vorliegenden Erfindung sind der obere Stützkörper und der untere Stützkörper jeweils mit Verstärkungsrippen in gleichmäßigen Abständen entlang der Richtung der Länge des Verbindungsteils für Dehnungsfuge versehen, wobei die Verstärkungsrippen senkrecht zu der Breitenrichtung des Verbindungsteils für Dehnungsfuge sind. Das Vorsehen der Verstärkungsrippen stellt einer stabileren Struktur stabiler und bessere Tragfähigkeit bereit.
3. 3. In der vorliegenden Erfindung ist eine Abdeckplatte oberhalb der Dehnungsfuge angeordnet, wobei die Abdeckplatte mit der ersten Stützstufe und der zweiten Stützstufe lösbar verbunden ist, und wobei zwischen der Abdeckplatte und der ersten sowie der zweiten Stützstufe eine Presspassung eingesetzt ist, wobei der horizontale Abstand zwischen dem rechten Ende der Stahlplattenschicht und dem rechten Ende der Pufferschicht der Abdeckplatte 1 cm bis 2 cm beträgt, und wobei der horizontale Abstand zwischen dem linken Ende der Stahlplattenschicht und dem linken Ende der Pufferschicht 1 cm bis 2 cm beträgt. Da die Pufferschicht eine vernetzte geschäumte Polyethylen-Polsterschicht ist, wird die Abdeckplatte einfach über die erste Stützstufe und die zweite Stützstufe ohne irgendein Hilfswerkstück geklemmt werden kann und gleichzeitig einfach abnehmbar ist, was für die Inspektion sowie Wartung vorteilhaft ist.
4. 4. In der vorliegenden Erfindung sind beim Verbinden der Oberen Enden der ersten Befestigungssäule mit der der zweiten Befestigungssäule die parallel und versetzt angeordneten oberen Enden der ersten und der zweiten Befestigungssäule durch Eisendrähte zu zweit und unabhängig voneinander gewickelt sind, wodurch das Lösen oder Brechen des Eisendrahts von den oberen Enden einer ersten und einer zweiten Befestigungssäule keinen Einfluss auf die Verbindungen zwischen anderen ersten und zweiten Befestigungssäulen übt, so dass eine stabile Struktur und eine gute Sicherheit bereitgestellt werden.
5. 5. In der vorliegenden Erfindung umfassen sowohl die erste Befestigungssäule als auch die zweite Befestigungssäule einen säulenförmigen Bewehrungsstahl in der Mitte und einen spiralförmigen Stahldraht, der fest um den Außenumfang des säulenförmigen Bewehrungsstahls gewickelt ist. Dabei ist der Bewehrungsstahl fest, und der am Außenumfang des Bewehrungsstahls ummantelte Eisendraht dient dazu, eine Verschiebung der ersten und der zweiten Befestigungssäule zu vermeiden, eine Beschädigung der Verbindung der Dehnungsfugen zu verhindern und Sicherheitsrisiken zu vermeiden.
6. 6. In der vorliegenden Erfindung umfasst die Abdeckplatte eine obere Stahlplattenschicht und eine untere Pufferschicht umfasst. Durch das Vorsehen der Pufferschicht können Stöße absorbiert werden, wobei während einer Fahrt keine Unebenheit auftritt, was den Fahrkomfort verbessert. Dabei ist die untere Oberfläche der Pufferschicht wellenförmig ausgebildet, wodurch der Dämpfungseffekt besser wird, während die Verschiebung verhindert wird.
7. 7. In der vorliegenden Erfindung ist ein elastisches Füllmaterial zwischen der Dehnungsfuge und dem Verbindungsteil für Dehnungsfuge gefüllt, wobei das elastische Füllmaterial ein Polyurethan-Dichtungsmittel, ein Silikondichtmittel oder ein Polysulfid-Dichtungsmittel ist. Dies erfüllt die Anforderungen an Ausdehnungen sowie Verformungen des Brückenkörpers, erhöht den Lebenslauf der Brückendehnungsfuge, verringert die Schwierigkeit der Wartung der Brückendehnungsfuge, verkürzt die Bauzeit und reduziert die tägliche Wartungs- und Reinigungsarbeit. Das elastische Füllmaterial hat ferner eine gute Dämpfungsfunkt, verbessert die Glätte der Straßenoberfläche wirksam und verringert die Auswirkung des Sprungs, wodurch die Lebensdauer der Brücke verbessert wird; gleichzeitig kann während der Wartung an stellt einer Ersetzung eines beschädigten Dichtungsgummiband das elastische Füllmaterial direkt gefüllt werden.

The present invention has at least the following advantageous effects:

1. 1. In the present invention, the first and second bridge sub-bodies are respectively provided with a plurality of first mounting pillars and second mounting pillars at regular intervals along the width direction of the bridge body, the upper ends of all the first mounting pillars and all second mounting pillars being connected by winding the iron wire and whose lower ends are fixedly connected by a chain in one-to-one correspondence, the length of the Latette being greater than the width of the expansion joint. The upper and lower ends of the first mounting pillar and the second mounting pillar are fixed, thereby providing a stable structure and preventing the expansion joint from being excessively deformed and even causing the formation of a crack which can lead to a safety risk. The expansion joint connecting part comprises an upper supporting body having a downwardly convex arcuate portion and a lower supporting body having an upwardly convex arcuate portion, the upper supporting body being integrally connected to the lower supporting body, and left and right sides of the expansion joint connecting portion a respective stop plate is arranged, whereby the two ends can be clamped in the C-steel plates on both sides to allow a connection, whereby a good stability and a good load capacity can be achieved, which meets the requirements for expansions and deformations of the bridge body, so that the bridge is not easy to damage and the maintenance costs are saved.
2. 2. In the present invention, the upper support body and the lower support body are respectively provided with reinforcing ribs at equal intervals along the direction of the length of the expansion joint connecting part, the reinforcing ribs being perpendicular to the width direction of the expansion joint connecting part. The provision of the reinforcing ribs provides a sturdier structure with more stable and better carrying capacity.
3. 3. In the present invention, a cover plate is disposed above the expansion joint, wherein the cover plate is detachably connected to the first support step and the second support step, and wherein between the cover plate and the first and the second support step a Press fit is used, wherein the horizontal distance between the right end of the steel plate layer and the right end of the buffer layer of the cover plate 1 cm to 2 cm, and wherein the horizontal distance between the left end of the steel plate layer and the left end of the buffer layer 1 cm to 2 cm is. Since the buffer layer is a cross-linked foamed polyethylene cushion layer, the cover plate can be easily clamped over the first support step and the second support step without any auxiliary work and at the same time is easily removable, which is advantageous for inspection and maintenance.
4. 4. In the present invention, in connecting the upper ends of the first mounting pillar to the second mounting pillar, the parallel and staggered upper ends of the first and second mounting pillars are wound by iron wires in twos and independently, thereby releasing or breaking the iron wire from the upper ends of a first and a second mounting column exerts no influence on the connections between other first and second mounting pillars, so that a stable structure and a good security are provided.
5. 5. In the present invention, both the first mounting pillar and the second mounting pillar include a columnar reinforcing steel in the middle and a helical steel wire tightly wound around the outer circumference of the columnar reinforcing steel. In this case, the reinforcing steel is fixed, and the iron wire encased in the outer circumference of the reinforcing steel serves to avoid a displacement of the first and the second mounting column, to prevent damage to the connection of the expansion joints and to avoid safety risks.
6. 6. In the present invention, the cover plate comprises an upper steel plate layer and a lower buffer layer. By providing the buffer layer, shocks can be absorbed without causing any unevenness during travel, which improves ride comfort. In this case, the lower surface of the buffer layer is wave-shaped, whereby the damping effect is better, while the displacement is prevented.
7. 7. In the present invention, an elastic filling material is filled between the expansion joint and the expansion joint connecting part, wherein the elastic filling material is a polyurethane sealant, a silicone sealant or a polysulfide sealant. This meets the requirements of expansion and deformation of the bridge body, increases the life of the bridge expansion joint, reduces the difficulty of maintenance of the bridge expansion joint, shortens the construction time and reduces the daily maintenance and cleaning work. The elastic filling material also has a good damping point, effectively improves the smoothness of the road surface and reduces the effect of the jump, thereby improving the life of the bridge; At the same time, during maintenance, replacement of a damaged sealing rubber band may be directly filled with the elastic filling material.

list of figures

• 1 shows a schematic structural view according to the present invention;
• 2 shows a structure according to the invention along the A - A -Direction;
• 3 shows a schematic structural view of the mounting column according to the present invention;
• 4 shows a schematic view illustrating the connection structure of the first mounting column with the second mounting column according to the present invention;
• 5 Fig. 10 is a schematic structural view of a joint member for expansion joint according to the present invention;
• 6 Fig. 12 is a schematic structural view illustrating a reinforcing rib on the expansion joint connecting part according to the present invention;
• 7 Fig. 3 shows a schematic structural view of the cover plate according to the present invention.

The accompanying drawings include the following reference numerals:
expansion 1 ; first bridge part body 2 ; first support level 21 ; first fastening column 22 ; first fastening column No. 1 221; first mounting column no. 2 222; first fastening column No. 3 223; first mounting column no. 4 224; first fastening column No. 5 225; first fastening column No. 6 226; first fastening column No. 7 227; first mounting column no. 8 228; second bridge subbody 3 ; second support level 31 ; second mounting column 32 ; second mounting column no. 1 321; second mounting column no. 2 322; second mounting column no. 3 323; second mounting column no. 4 324; second fastening column no. 5 325; second mounting column no. 6 326; second mounting column no. 7 327; second mounting column no. 8 328; Carbon steel plate 4 ; iron wire 5 ; Connecting part for expansion joint 6 ; Upper support body 61 ; lower support body 62 ; reinforcing rib 63 ; stop plate 64 ; cover 7 ; Steel plate layer 71 ; buffer layer 72 ; elastic filling material 8th ; columnar reinforcing steel 9 ; spiral steel wire 10 ; Chain 11 ; Distance between adjacent reinforcing ribs L1 ; horizontal distance between the right end of the steel plate layer and the right end of the buffer layer of the cover plate L2 ; horizontal distance between the left end of the steel plate layer and the left end of the buffer layer of the cover plate L3 ,

Description of the preferred embodiments

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention will become more apparent to those skilled in the art, thereby more clearly defining the scope of the present invention.

Embodiment: Expansion joint structure of a bridge, as in FIG 1 to 7 shown comprises a bridge body and an expansion joint 1 , wherein the expansion joint is located at one end of the bridge body and the bridge body in a first bridge body part 2 and a second bridge subbody 3 divides, wherein the first bridge body part is recessed at its end near the expansion joint to a first support level 21 forming an end of the first support step remote from the expansion joint with a plurality of first attachment columns 22 which are distributed along the width direction of the bridge body at equal intervals, wherein the first attachment columns are perpendicular to the bridge body, wherein one end of the second bridge body part is recessed in the vicinity of the expansion joint to a second support stage 31 form, wherein the second support step and the first support step are flush, wherein a remote from the expansion joint end of the second support stage with a plurality of second fastening columns 32 are distributed along the width direction of the bridge body at regular intervals, wherein the second mounting pillars are perpendicular to the bridge body, wherein lower ends of all the first mounting pillars and all second mounting pillars are recessed respectively in the first and second bridge body parts and their upper ends respectively from the protrude first and second support step, wherein all the first mounting pillars are in a one-to-one correspondence to all second mounting pillars, wherein side surfaces of the first and second support stage each with a C-steel plate 4 are firmly connected and C-grooves of the C-steel plates are arranged opposite on both sides,
the upper ends of the first mounting pillars and the second mounting pillars being through an iron wire 5 connected to each other, and the lower ends of the first fastening columns and the second fastening columns by a chain 11 are each firmly connected to each other,
wherein the length of the chain is greater than the width of the expansion joint.

A connecting part 6 for expansion joint provided along the width direction of the bridge body is disposed between the first bridge sub-body and the second bridge sub-body, both ends of the expansion joint connecting part being respectively clamped in the C-steel plates on both sides, the expansion joint connecting portion being an upper supporting body 61 with a downwardly convex arcuate portion and a lower support body 62 comprising an upwardly convex arcuate portion, wherein the upper support body is integrally connected to the lower support body, wherein the upper support body and the lower support body each having reinforcing ribs 63 are provided at equal intervals along the direction of the length of the expansion joint connecting part, and the reinforcing ribs are perpendicular to the width direction of the expansion joint connecting part,
a cover plate 7 is disposed above the expansion joint, and an upper surface of the cover plate is flush with an upper surface of the bridge body, and the cover plate is detachably connected to the first support step and the second support step, wherein the cover plate is a steel plate upper layer 71 and a lower buffer layer 72 wherein the steel plate layer is fixedly connected to the buffer layer, wherein the steel plate layer has a thickness which is 1/4 of the thickness of the buffer layer, wherein the left and right sides of the cover plate abut against the first bridge sub-body and the second bridge sub-body,
wherein an elastic filling material 8th between the expansion joint and the connecting part for expansion joint is filled.

The first mounting column and the second mounting column are a mounting pillar having the same structure as a columnar reinforcing steel 9 in the middle and a spiral steel wire 10 which is tightly wound around the outer periphery of the columnar reinforcing steel.

The elastic filler material is a polyurethane sealant, a silicone sealant or a polysulfide sealant.

On the left and right sides of the upper support body and the lower support body is in each case a stop plate 64 arranged.

The buffer layer is a crosslinked foamed polyethylene cushion layer.

The distance L1 between adjacent reinforcing ribs is 20 to 30 cm.

The numbers of the first attachment column and the second attachment column are the same and are 8 to 12, respectively.

In a specific implementation of the present invention, eight first mounting posts are provided, front to rear, respectively, first mounting post # 1 221, first post # 2,222, first post # 3 223, first post # 4 224, first post # 1 No. 5,225, first fastening column No. 6,226, first fastening column No. 7,227, first fastening column No. 8,228 are, while also eight second fastening columns are provided, each second fastening column No. 1 321, second fastening column No. 2 322, No. 3,323 second column, second column No. 4,324, second column No. 5,325, second column No. 6,326, second column No. 7,327, second column No. 8,328. In this case, all the first fastening columns and all the second fastening columns are in a one-to-one correspondence in the order.

The upper ends of the first mounting posts and the second mounting posts are wound by iron wires by: the first mounting column # 1 with the second mounting column # 1, the second mounting column # 1 with the first mounting column # 2, the first mounting column no. 2 with the second mounting pillar No. 2, the second mounting pillar No. 2 with the first mounting pillar No. 3, the first mounting pillar No. 3 with the second mounting pillar No. 3, the second mounting pillar No. 3 with the first mounting pillar No. 4 4, the second fixing column No. 4 with the first fixing column No. 5, the first fixing column No. 5 with the second fixing column No. 5, the second fixing column No. 5, with the first fixing column No. 4 with the second fixing column No. 4 No. 6 first fixing column, No. 6 second fixing column, No. 6 second fixing column, second fixing column No. 6 with the first mounting pillar No. 7, the first mounting pillar No. 7 with the second mounting pillar No. 7, the second mounting pillar No. 7 with the first mounting pillar No. 8, the first mounting pillar No. 8 with the second mounting pillar No. 8 is each connected by an iron wire wrapped.

The width of the steel sheet layer is smaller than the width of the buffer layer.

Between the cover plate and the first and the second support stage is connected by a press fit.

The horizontal distance L2 between the right end of the steel plate layer and the right end of the buffer layer of the cover plate is 1 cm to 2 cm, while the horizontal distance L3 between the left end of the steel plate layer and the left end of the buffer layer of the cover plate is also 1 cm to 2 cm.

The lower surface of the buffer layer is undulating.

The cover plate has a thickness of 0.5 cm to 2 cm.

• In der vorliegenden Erfindung sind der erste und der zweite Brückenteilkörper jeweils mit einer Vielzahl von ersten Befestigungssäulen und zweiten Befestigungssäulen in gleichmäßigen Abständen entlang der Breitenrichtung des Brückenkörpers versehen, wobei die oberen Enden aller ersten Befestigungssäulen und aller zweiten Befestigungssäulen durch Wicklung des Eisendrahts verbunden sind und deren untere Enden durch eine Kette in einer Eins-zu-Eins-Entsprechung fest verbunden sind, wobei die Länge der Lette größer als die Bereite der Dehnungsfuge ist. Die oberen und unteren Ende der ersten Befestigungssäule und der zweiten Befestigungssäule sind fixiert, wodurch eine stabile Struktur bereitgestellt wird und verhindert werden kann, dass die Dehnungsfuge sich übermäßig verformt und sogar die Bildung eines Risses verursacht, der zum Sicherheitsrisiko führen kann. Das Verbindungsteil für Dehnungsfuge umfasst einen oberen Stützkörper mit einem nach unten konvexen bogenförmigen Abschnitt und einen unteren Stützkörper mit einem nach oben konvexen bogenförmigen Abschnitt, wobei der obere Stützkörper einstückig mit dem unteren Stützkörper verbunden ist, wobei auf der linken und rechten Seite des Verbindungsteils für Dehnungsfuge jeweils eine Anschlagplatte angeordnet ist, wodurch die beiden Enden in die C-Stahlplatten auf beiden Seiten festgeklemmt werden können, um eine Verbindung zu ermöglichen, wodurch eine gute Stabilität sowie eine gute Tragfähigkeit erreicht werden, was die Anforderungen an Ausdehnungen sowie Verformungen des Brückenkörpers erfüllt, so dass die Brücke nicht leicht zu beschädigen ist und die Wartungskosten eingespart werden.

The working principle of the present invention is as follows:

• In the present invention, the first and second bridge sub-bodies are respectively provided with a plurality of first fixing columns and second fixing columns at regular intervals along the width direction of the bridge body, and the upper ends of all the first fixing columns and all the second fixing columns are connected by winding the iron wire and their ends lower ends are fixedly connected by a chain in a one-to-one correspondence, the length of the Latette being greater than the width of the expansion joint. The upper and lower ends of the first mounting pillar and the second mounting pillar are fixed, thereby providing a stable structure and preventing the expansion joint from being excessively deformed and even causing the formation of a crack which can lead to a safety risk. The expansion joint connecting part comprises an upper supporting body having a downwardly convex arcuate portion and a lower supporting body having an upwardly convex arcuate portion, the upper supporting body being integrally connected to the lower supporting body, and left and right sides of the expansion joint connecting portion a respective stop plate is arranged, whereby the two ends can be clamped in the C-steel plates on both sides to allow a connection, whereby a good stability and a good load capacity can be achieved, which meets the requirements for expansions and deformations of the bridge body, so that the bridge is not easy to damage and the maintenance costs are saved.

Only some embodiments of the present invention are shown above and thus do not limit the scope of the patent of the present invention. Any equivalent structural transformation made with the present description and the contents of the drawings and the direct and indirect applications of the present invention in other related technical fields are included within the scope of the present invention.

Claims (10)

Expansion joint structure of a bridge, comprising a bridge body and an expansion joint (1), characterized in that the expansion joint is located at one end of the bridge body and divides the bridge body into a first bridge body part (2) and a second bridge body part (3), wherein the first bridge body part is recessed at its end near the expansion joint to form a first support step (21), wherein an end of the first support step remote from the expansion joint is provided with a plurality of first attachment pillars (22) distributed uniformly along the width direction of the bridge body wherein the first mounting posts are perpendicular to the bridge body with one end of the second bridge section body recessed proximate the expansion joint to form a second support step (31), the second support step and the first support step being flush, one of the expansion joint distant end of the second stage tz-stage is provided with a plurality of second mounting pillars (32) distributed along the width direction of the bridge body at equal intervals, the second mounting pillars are perpendicular to the bridge body, wherein lower ends of all first mounting pillars and all second mounting pillars each sunk into the first and second bridge body part and the upper ends of each of which protrude from the first and second support steps, all of the first attachment posts being in one-to-one correspondence to all the second attachment posts, with side surfaces of the first and second support steps respectively fixed to a C-steel plate (4) are connected and C-slots of the C-steel plates are arranged opposite on both sides, wherein the upper ends of the first mounting pillars and the second mounting pillars by an iron wire (5) are interconnected and the lower ends of the first mounting pillars and the two Attachment columns by a chain (11) are each firmly connected to each other, wherein a connecting part (6) for an expansion joint, which is provided along the width direction of the bridge body between the first bridge body part and the second bridge body part is arranged, both ends of the connecting part for an expansion joint are respectively clamped in the C-steel plates on both sides, wherein the expansion joint connecting part comprises an upper support body (61) having a downwardly convex arcuate portion and a lower support body (62) having an upwardly convex arcuate portion the upper support body is integrally connected to the lower support body, wherein the upper support body and the lower support body are respectively provided with reinforcing ribs (63) at regular intervals along the direction of the length of the expansion joint connecting part, and the reinforcing ribs are lowered true to the width direction of the connecting part for an expansion joint, wherein a cover plate (7) is arranged above the expansion joint, an upper surface of the cover plate is flush with an upper surface of the bridge body and the cover plate with the first support stage and the second support step releasably connected wherein the cover plate comprises a top steel plate layer (71) and a bottom buffer layer (72), wherein the steel plate layer is fixedly connected to the buffer layer, the steel plate layer having a thickness which is 1/4 of the thickness of the buffer layer and right side of the cover plate abut against the first bridge sub-body and the second bridge sub-body, an elastic filling material (8) being filled between the expansion joint and the expansion-joint connecting part. Expansion joint structure of a bridge behind Claim 1 characterized in that the first mounting pillar and the second mounting pillar have a similar structure and comprise a columnar reinforcing steel (9) in the center and a helical steel wire (10) tightly wound around the outer periphery of the columnar reinforcing steel. Expansion joint structure of a bridge behind Claim 1 , characterized in that the elastic filling material is a polyurethane sealant, a silicone sealant or a polysulfide sealant. Expansion joint structure of a bridge behind Claim 1 , characterized in that on the left and right sides of the upper support body and the lower support body in each case a stop plate (64) is arranged. Expansion joint structure of a bridge behind Claim 1 , characterized in that the buffer layer is a cross-linked foamed polyethylene cushion layer. Expansion joint structure of a bridge behind Claim 1 , characterized in that the distance (L1) between adjacent reinforcing ribs is 20 cm to 30 cm. Expansion joint structure of a bridge behind Claim 1 , characterized in that the numbers of the first attachment column and the second attachment column are the same and each amount to 8 to 12. Expansion joint structure of a bridge behind Claim 1 , characterized in that the width of the steel sheet layer is smaller than the width of the buffer layer. Expansion joint structure of a bridge behind Claim 1 , characterized in that a lower surface of the buffer layer is formed wavy. Expansion joint structure of a bridge behind Claim 1 , characterized in that the cover plate has a thickness of 0.5 cm to 2 cm.

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