CN109914235B

CN109914235B - Bridge deck continuous structure

Info

Publication number: CN109914235B
Application number: CN201910325153.6A
Authority: CN
Inventors: 张旭云; 鲁朋; 张建伟
Original assignee: Individual
Current assignee: Zhang Xuyun
Priority date: 2019-04-22
Filing date: 2019-04-22
Publication date: 2021-09-03
Anticipated expiration: 2039-04-22
Also published as: CN109914235A

Abstract

A bridge deck continuous structure belongs to the field of building construction. The bridge deck continuous structure is used for a bridge to prevent the deck from cracking. The bridge comprises piers, upright columns, capping beams and a bridge floor. Two adjacent deck decks are brought closer together on the capping beam to form a joint where the two adjacent bridges mate to join the sinkers into a channel having a flat bottom surface. An elastic filling body is arranged in the groove, and asphalt is arranged at two ends of the elastic filling body. The continuous structure of the bridge deck can ensure that the cracks and gaps of the bridge are not easy to generate, and the construction is easier to realize.

Description

Bridge deck continuous structure

Technical Field

The invention relates to the field of building construction, in particular to a bridge deck continuous structure.

Background

With the continuous development of national economy, bridges become important components in traffic lines. The continuous and flat surface of the bridge can enable vehicles to pass through stably. However, the existing bridge is often deformed (including temperature deformation, shrinkage gradual deformation and the like) after being built. Therefore, there is a need for anti-deformation control of bridge decks. However, the existing solutions usually focus on the problems of inconvenient maintenance, long construction period and the like if bridge deck construction materials are changed. There is therefore a need for improvements to existing deck continuous structures.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

Based on the deficiencies of the prior art, the present invention provides a bridge deck continuous structure to partially or fully ameliorate, or even solve, the problems of the prior art.

The invention is realized by the following steps:

in a first aspect of the invention, there is provided a bridge deck continuous structure.

The bridge comprises piers, upright columns, capping beams and a bridge floor;

the bridge pier is used as a foundation of the bridge and is arranged on the foundation and extends vertically to be far away from the foundation;

the upright posts are attached to the bridge piers and are vertically arranged, and one ends of the upright posts, which are far away from the bridge piers, are covered by the cover beams;

the bent cap is combined on the upright post and extends in the horizontal direction, and the bent cap and the upright post are matched to form a T-shaped structure;

bridge decks of two adjacent bridges are close to each other to form a joint, stop plates are vertically arranged in the joint, one ends of the stop plates are in contact with the cover beam, the thickness of each stop plate is smaller than the width of the joint, the whole length of each stop plate extends to the partial depth of the joint, elastic epoxy resin materials are filled in the joint, and the epoxy resin materials are clamped in the joint in a compressed state and are combined with the tail ends of the stop plates;

one side of the bridge deck, which is far away from the cover beam, is provided with a sinking platform communicated with the joint, two adjacent bridge decks are matched at the joint to combine the sinking platforms into a groove with a flat bottom surface, an elastic filling body is arranged in the groove, two ends of the elastic filling body are provided with asphalt, and the asphalt and the elastic filling body completely fill the groove and are flush with the top surface of the bridge deck;

the adjusting piece is arranged in the joint, the adjusting piece wraps the epoxy resin material, the adjusting piece is provided with a first adjusting body and a second adjusting body which are matched with each other, the first adjusting body and the second adjusting body are oppositely arranged and form an accommodating cavity which is accommodated and is always contacted with the epoxy resin material, and the adjusting piece has a selectable first working state and a second working state; in the first working state, the first adjusting body is adjacent to the second adjusting body so as to reduce the accommodating cavity; in a second working state, the first adjusting body and the second adjusting body are separated from each other to enlarge the accommodating cavity, the first adjusting body and the second adjusting body are respectively provided with a first contact surface attached to the surface of the bridge, contact teeth are formed on the surface of the first contact surface, the first adjusting body and the second adjusting body and second contact surfaces of the epoxy resin material are smooth surfaces, and the first adjusting body and the second adjusting body and second contact surfaces of the epoxy resin material are both smooth surfaces;

the elastic filler is prepared from the following raw materials in parts by weight: 50-60 parts of epoxy resin, 60-75 parts of rubber particles, 20-30 parts of aggregate, 200-300 parts of Portland cement and 5-11 parts of diatomite;

the manufacturing method of the elastic filling body comprises the following steps: mixing rubber particles, diatomite and aggregate, and crushing into particles with the particle size of 3-5 mm to obtain a mixture; mixing epoxy resin, cement and portland cement, and performing compression molding under the pressure of 30-40 MPa.

In one or more preferred examples, the bottom surface of the groove is provided with a reinforcing mesh.

In one or more preferred examples, the reinforcing mesh is made of a metal material.

In one or more preferred examples, the elastic filler is coated with an adhesive between the elastic filler and the bottom surface.

In one or more preferred examples, two adjacent bridge decks are reinforced by anchor rods, the anchor rods are positioned on the side walls of the bridge decks, the anchor rods cross the joints, and two ends of the anchor rods are respectively embedded in the bridge decks.

In one or more preferred examples, the bridge deck is provided with a main embedded groove, the anchor rod is provided with a first folding part, a protruding part and a second folding part, the first folding part and the second folding part are respectively embedded into the main embedded grooves of the two bridge decks, and the protruding part is tightly attached to the stop plates.

In one or more preferred examples, the anchor rod is sleeved with a rubber pad.

In one or more preferred examples, the surfaces of the deck and the capping beam that contact each other are provided with diagonal grooves and diagonal edges that mate with each other.

In one or more preferred examples, the bridge deck continuous structure further comprises a plurality of support plates, the support plates being arranged obliquely and connected at both ends to the deck and the capping beam, respectively.

In one or more preferred examples, the stand outer wall is provided with a water conduit, one end of the water conduit extends to the ground, and the other end of the water conduit extends to a surface water channel arranged on the bridge.

Has the advantages that:

the bridge deck continuous structure provided by the embodiment of the invention can be well fused with the original bridge deck, and can reduce excessive influence on the appearance and structure of the original bridge deck. On the other hand, the bridge deck structure can be operated during bridge construction, and can also be reconstructed on a bridge which is already constructed, so that the bridge deck structure is easy to implement. In addition, the continuous structure has simple structure and wide application, improves the surface stability of the bridge deck, improves the safety, smoothness and comfort of driving, and is suitable for the reconstruction of the constructed highway bridge.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a first bridge deck continuous structure provided by an embodiment of the present invention;

FIG. 2 is a schematic view of a second bridge deck continuous structure provided by an embodiment of the present invention;

FIG. 3 is a schematic view of a third bridge deck continuous structure provided by an embodiment of the present invention;

figure 4 shows a schematic view of the construction of the anchor rods in the continuous bridge deck structure of figure 3;

figure 5 shows a schematic view of the structure of a capping beam in the continuous structure of bridge deck of figure 3;

figure 6 shows a schematic view of a bridge deck continuous structure according to figure 1 provided with adjustment members;

FIG. 7 shows a schematic view of a first type of trim element in the deck continuum structure provided in FIG. 6;

figure 8 shows a schematic view of the second type of trim element in the deck continuum structure provided in figure 6.

Icon: 101-bridge pier; 102-a column; 103-a capping beam; 104-bridge; 105-a stop plate; 105 a-a stop; 1051-friction teeth; 106-epoxy resin material; 107-an elastomeric filling; 108-asphalt; 201-a support plate; 301-anchor rod; 3011-a first fold; 3012-a projection; 3013-a second fold; 601-a first tuning body; 602-a second tuning body; 603-contact teeth; 604-a containment chamber; 605-column; 606-post hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

See fig. 1-8.

The present embodiment provides a deck continuous structure for a bridge 104 that protects the deck from cracking.

The bridge 104 includes piers 101, columns 102, cap girders 103, and a deck. The piers 101, the columns 102, the capping beams 103, and the bridge deck are all cast with appropriate concrete, and may be cast in place or connected by precast concrete members using cement concrete.

Pier 101 serves as a foundation for bridge 104. The pier 101 is disposed on a foundation and extends vertically away from the foundation. That is, the pier 101 is erected, which is generally vertically arranged.

The columns 102 are attached to the piers 101 and are vertically arranged. The end of the column 102 remote from the pier 101 is covered by a capping beam 103. One end of the column 102 remote from the pier 101 is covered with a capping beam 103, and the capping beam 103 extends in the horizontal direction. Thus, the capping beam 103 cooperates with the upright 102 to form a T-shaped structure. Furthermore, it is more preferable that the connecting position of the upright 102 to the capping beam 103 is located at the center of the capping beam 103, so as to balance the gravity and the pressing force applied to the capping beam 103 at both side portions of the upright 102.

Generally, in order to improve the strength, stability and support performance of the bridge 104, the pier 101, the column 102 and the cap beam 103 are preferably cast by reinforced concrete bonding. The specific shapes and configurations of the pier 101, the pillar 102, and the capping beam 103 may be determined according to the construction environment of the specific bridge 104, and the present invention is not particularly limited. However, the pier 101 and the cap beam 103 generally have a larger cross section.

Adjacent two deck decks are brought closer together on the capping beam 103 to form a joint. Alternatively, it can be described as: the decks of two adjacent bridges 104 are adjacent to each other and form a joint. The seam has a certain width so as to be able to be filled with different substances as required.

In actual construction, after the piers 101, the columns 102 and the capping beams 103 are constructed as one body, the deck is directly hoisted and installed to a proper position. The lid bar 103 is vertically provided with a stop plate 105, the thickness of the stop plate 105 being smaller than the width of the seam, the full length of the stop plate 105 extending to a part of the depth of the seam. The height of the stop plate 105 is significantly less than the depth of the seam, and in practice the top stop plate 105 is a small visually-visible raised structure, which may typically be 20-30 cm. The stop plates 105 can prevent the two adjacent bridges 104 from being squeezed and rubbed, and can also be used as a member for hoisting and positioning the bridges 104.

The seam is filled with a resilient epoxy material 106, and the epoxy material 106 is clamped in the seam in a compressed state. Since the epoxy material 106 is in a compressed state, it can ensure that the joint of the two bridges is in a relatively tight bonding state during initial installation. When the two bridges move to approach each other, the epoxy material 106 is continuously compressed (and accordingly the reaction force of the epoxy material is applied) so that the stable combination can be continuously maintained. On the other hand, when the two bridges move away from each other, the compressed epoxy material 106 will return to its full or partial original length with the load completely or partially removed, thereby compensating for the enlarged joint formed by the bridges moving away from each other so that the two bridges can be continuously joined.

The epoxy material 106 is bonded to the aforementioned stopper plate 105.

The bridge 104 is provided with a sunken platform on the side away from the cover beam 103, two adjacent bridges 104 are matched at the joint to combine the sunken platforms into a groove with a flat bottom surface, an elastic filling body 107 is arranged in the groove, and asphalt 108 is arranged at two ends of the elastic filling body 107. Asphalt 108, elastomeric filler 107 completely fills the recess and is flush with the top surface of bridge 104. The deformation expansion rate of the asphalt 108 and the elastic filling body 107 are matched, so that grooves can be filled better, and surface cracking, gaps and the like caused by the deformation of the bridge deck are avoided.

An adjusting piece is arranged in the seam. The trim is used to enable the epoxy material located within the joint to be more evenly stressed while reducing its effect on shear forces (generated by the bridge moving in different planes on both sides). The adjusting member may be a stainless steel plate or other metal plate.

The trim piece can be wrapped with an epoxy material. The first adjusting body 601 and the second adjusting body 602 are smooth surfaces on the second contact surface with the epoxy resin material. In other words, the two adjusting bodies can apply horizontal opposite acting forces to the epoxy resin material, but are not easy to apply mutually crossed shearing forces, so that the epoxy resin material can better and durably provide stable interference and support of the joint and adapt to how much bridge deformation.

In the invention, the adjusting piece is provided with a first adjusting body 601 and a second adjusting body 602 which are matched with each other. The first adjusting body 601 and the second adjusting body 602 are respectively provided with a first contact surface which is attached to the bridge surface, and the first contact surface forms contact teeth 603 (in this example, a triangular cone structure). The contact teeth can reduce relative movement between the adjuster and the bridge. Namely, the adjusting piece and the bridge can be displaced relatively synchronously.

The first tuning body 601 and the second tuning body 602 are arranged opposite to each other and form a receiving cavity 604 that receives and is in constant contact with the epoxy resin material.

The adjusting piece has a first working state and a second working state which are selectable;

in the first working state, the first adjusting body and the second adjusting body are adjacent to each other to reduce the accommodating cavity;

in the second working state, the first adjusting body and the second adjusting body are far away from each other to enlarge the accommodating cavity.

Preferably, the first and second adjustment members are adjustably coupled by engagement of the post 605 and the post hole 606 to maintain a relatively stable position.

In addition, the replacement of the epoxy resin material can be realized by arranging the adjusting piece (mainly comprising the first adjusting body and the second adjusting body), so that the epoxy resin material cannot be replaced due to accidental damage in the service period of the epoxy resin material, and the use of the epoxy resin material is more flexible.

The raw materials for manufacturing the elastic filler 107 comprise the following components in parts by weight: 50-60 parts of epoxy resin, 60-75 parts of rubber particles, 20-30 parts of aggregate, 200-300 parts of Portland cement and 5-11 parts of diatomite.

The method of making the elastomeric filling 107 is as follows: mixing rubber particles, diatomite and aggregate, and crushing into particles with the particle size of 3-5 mm to obtain a mixture; mixing epoxy resin, cement and portland cement, and performing compression molding under the pressure of 30-40 MPa.

In one specific embodiment, the coating comprises 60 parts of epoxy resin, 75 parts of rubber particles, 20 parts of aggregate, 200 parts of Portland cement and 5 parts of diatomite. The method of making the elastomeric filling 107 is as follows: mixing rubber particles, diatomite and aggregate, and crushing the mixture into a mixture with the particle size of 5mm to obtain a mixture; mixing epoxy resin, cement and portland cement, and performing compression molding under the pressure of 36 MPa. The compression strength is 52MPa, the breaking strength is 5MPa, and the sound absorption and noise reduction coefficient is approximately between 0.7 and 0.8.

The elastic filling body 107 has proper telescopic shape and proper bending strength and tensile strength, can be well matched with the groove, and improves the continuity of the bridge deck.

In some improved examples, the bottom surface of the groove is laid with a reinforcing mesh. In one example, the reinforcing mesh is made of a metal material. The reinforcing mesh serves to increase friction while improving the bonding strength between the asphalt 108 and the elastic fillers 107 and the grooves. Further, an adhesive is coated between the elastic filling body 107 and the bottom surface, and a cement adhesive may be used.

In addition, two adjacent bridges 104 are reinforced by anchor rods 301, the anchor rods 301 span the joint, two ends of each anchor rod 301 are buried in the corresponding bridge 104, and rubber pads are sleeved on the anchor rods 301. The rubber pads may provide enhanced friction and may improve the stability of the anchoring between the bridges 104. In particular, the inventors found that a plurality of rubber pads are provided over the entire length of the anchor 301, and a gap of an appropriate width is formed between adjacent two rubber pads. It would be more advantageous to enhance friction in such a bolt 301 configuration. Compared with the anchor rod 301 which is completely covered by the rubber pad, the multi-section rubber pad with the interval can be better used and plays a role in reinforcement.

Preferably, the anchor rods 301 are arranged on the side surface of the bridge deck, the anchor rods 301 cross the joints, and two ends of the anchor rods 301 are respectively embedded in the bridge deck. The anchor rods 301 act as a drag, limiting action, making it less likely that two decks in abutting contact with each other to form a joint will move or disengage from each other.

In a preferred embodiment, the anchor rod 301 is a cylindrical structure that is arranged to be bent. Preferably, the surface of the anchor 301 is formed with raised reinforcing ribs and may be used to enhance friction and thereby improve the stabilising effect on the deck.

The folded anchor bar 301 includes a first fold 3011, a tab 3012, and a second fold 3013. Suitably, a main embedded groove is formed at a surface of the deck contacting the cap beam 103. The first and second folded

portions

3011 and 3013 are respectively embedded in the main embedded grooves of the two bridge decks, and the protruding portion 3012 is tightly attached to the stop plate 105, so as to further enhance the connection firmness and stability.

In order to obtain a more stable structure, the bridge deck continuous structure of the bridge 104 further comprises a plurality of plates 201, the plates 201 are obliquely arranged and the two ends are respectively connected with the bridge 104 and the cover beam 103. The strip 201 may transmit the forces experienced by the bridge 104 to the capping beam 103. The forces from the bridge 104 transmitted on both sides of the capping beam 103 are transferred and supported by the capping beam 103.

In a further development, as an aid and reinforcement for the fixation to the anchor rods 301, or in some cases as a primary reinforcement, the surfaces of the deck in contact with the cap beams 103 are provided with mutually interfitting matching inclined grooves and inclined ridges.

The support plate 201 can inhibit the relative movement between the bridge 104 and the cover beam 103 to a certain extent, thereby inhibiting the occurrence of slight jolt on the surface of the bridge 104. The support plate 201 may be fixed by the engagement of metal lugs and bolts.

In addition, as a supplementary solution, the capping beam 103 is retained with protruding locating rods during the casting and manufacturing process. The positioning rod can be made of steel bars. The positioning rod extends from the upper surface (surface in contact with the deck) of the cap beam 103 in the deck direction away from the cover. Cooperatively, the stopper plate 105 is provided with a hole. The holes provided in the stop plate 105 may allow for the insertion of a positioning rod to position the stop plate 105. At the same time, the stopper plate 105 can be made less susceptible to displacement.

Further, the epoxy resin material 106 may also be provided with a hole (blind hole) that is in coaxial communication with the hole (through hole) in which the stopper plate 105 is provided. In this way, the positioning rod disposed on the lid bar 103 can pass through the hole of the stopper plate 105 and enter the hole of the epoxy material 106, thereby positioning and restraining the two by the positioning rod. Obviously, in such a solution, the positioning rod is a straight rod.

Another stop 105a, which has a friction tooth 1051 in frictional contact with the cover beam 103, can reduce the displacement of the cover beam due to being pressed by the bridge, further avoid the accumulation of the displacement, and can be restored to the original position or the approximate original position to a certain extent when the deformation of the bridge is changed or eliminated.

Preferably, the positioning rod is of a bent structure or a spiral structure. In the bending structure, it may include a first vertical section, a horizontal section, and a second vertical section that are sequentially connected and arranged. Alternatively, in other examples, the positioning rod is a helical structure. Alternatively, the positioning rod may also be a fork-shaped structure.

Based on the need to clear away standing water, the outer wall of the upright post 102 is provided with a water conduit. One end of the penstock extends to the ground and the other end of the penstock extends to a surface flume provided in the bridge 104.

The flumes are arranged along the length direction of the bridge 104 and are located on both sides of the bridge 104 in the width direction. The water conduit is positioned in the water diversion groove, and can guide away water flow gathered by the water diversion groove to avoid ponding, thereby ensuring normal traffic of vehicles in rainy days.

Further, when the rainwater lasts for a long time, the accumulated water in the water diversion groove cannot be drained away in time, and the leakage is easy to happen. In this respect, in a modified example of the present invention, the inner wall of the water guide groove is provided with a waterproof layer. The waterproof layer is preferably laid with asphalt 108, or waterproof tape, or the like.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bridge deck continuous structure is characterized in that a bridge comprises piers, upright columns, capping beams and a deck;

the bridge pier is used as a foundation of the bridge and is arranged on a foundation and extends vertically to be far away from the foundation;

the upright post is attached to the bridge pier and is vertically arranged, one end, away from the bridge pier, of the upright post is covered by the bent cap, a water conduit is arranged on the outer wall of the upright post, one end of the water conduit extends to the ground, and the other end of the water conduit extends to a water diversion groove formed in the surface of the bridge;

the bent cap is combined with the upright post and extends in the horizontal direction, and the bent cap and the upright post are matched to form a T-shaped structure;

the bridge decks of two adjacent bridges are close to each other to form a joint, a stop plate is vertically arranged in the joint, one end of the stop plate is in contact with the cover beam, the thickness of the stop plate is smaller than the width of the joint, the whole length of the stop plate extends to the partial depth of the joint, an elastic epoxy resin material is filled in the joint, and the epoxy resin material is clamped in the joint in a compressed state and is combined with the tail end of the stop plate;

two adjacent bridge floors are reinforced through anchor rods, the anchor rods are located on the side walls of the bridge floors, the anchor rods stretch over the joints, two ends of each anchor rod are buried in the bridge floors respectively, main embedded grooves are formed in the bridge floors, the anchor rods are provided with first folding parts, protruding parts and second folding parts, the first folding parts and the second folding parts are embedded into the main embedded grooves of the two bridge floors respectively, the protruding parts are tightly attached to the stop plates, the anchor rods are sleeved with rubber pads, a plurality of rubber pads are arranged in the full-length range of the anchor rods, gaps are formed between the two adjacent rubber pads, and inclined grooves and inclined edges which are matched with each other in an embedded mode are formed in the surfaces, in contact with each other, of the bridge floors and the cover beams;

one side of the bridge deck, which is far away from the cover beam, is provided with a sinking platform communicated with the joint, two adjacent bridge decks are matched at the joint to combine the sinking platforms into a groove with a flat bottom surface, the bottom surface of the groove is paved with a reinforcing net, the reinforcing net is made of metal materials, an elastic filling body is arranged in the groove, a bonding agent is coated between the elastic filling body and the bottom surface, two ends of the elastic filling body are provided with asphalt, and the asphalt and the elastic filling body are completely filled in the groove and flush with the top surface of the bridge deck;

the adjusting piece is arranged in the joint and wraps the epoxy resin material, the adjusting piece is provided with a first adjusting body and a second adjusting body which are matched with each other, the first adjusting body and the second adjusting body are oppositely arranged and form an accommodating cavity which is always contacted with the epoxy resin material, and the adjusting piece is provided with a first working state and a second working state; in the first working state, the first adjusting body and the second adjusting body are adjacent to each other to reduce the accommodating cavity; in the second working state, the first adjusting body and the second adjusting body are far away from each other to enlarge the accommodating cavity, the first adjusting body and the second adjusting body are respectively provided with a first contact surface attached to the side wall of the bridge deck, and contact teeth are formed on the surface of the first contact surface;

the bridge deck continuous structure further comprises a plurality of support plates, wherein the support plates are obliquely arranged, and two ends of each support plate are respectively connected with the bridge deck and the cover beam;

the manufacturing method of the elastic filling body comprises the following steps: mixing the rubber particles, the diatomite and the aggregate, and crushing into a mixture with the particle size of 3-5 mm to obtain a mixture; and mixing the epoxy resin, the mixture and the portland cement, and performing compression molding under the pressure of 30-40 MPa.