CN112095443A - Interface strong-adhesion type seamless telescopic device and construction method thereof - Google Patents
Interface strong-adhesion type seamless telescopic device and construction method thereof Download PDFInfo
- Publication number
- CN112095443A CN112095443A CN202010962555.XA CN202010962555A CN112095443A CN 112095443 A CN112095443 A CN 112095443A CN 202010962555 A CN202010962555 A CN 202010962555A CN 112095443 A CN112095443 A CN 112095443A
- Authority
- CN
- China
- Prior art keywords
- bridge
- seam crossing
- layer
- expansion joint
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Abstract
The invention relates to a seamless expansion device with strong bonding interface and a construction method thereof, in order to solve the problem of poor durability universality of the conventional seamless expansion device, the seamless expansion device comprises expansion joint filler, a transition bonding layer, a joint crossing assembly, a bridge deck pavement layer, bridge structures, a stress absorption layer and a reinforcing rib assembly, wherein a beam joint is arranged between the two bridge structures, the joint crossing assembly is connected with the beam joint, a filling space with a slotted sine linear structure is arranged on the surface of the bridge deck pavement layer, the transition bonding layer is connected with the inner side wall of the filling space, the stress absorption layer and the expansion joint filler are filled on the upper surface of the bridge structures from bottom to top and positioned in the filling space between the transition bonding layers, and the reinforcing rib assembly for reinforcing the continuity between the expansion joint filler and the bridge structures is embedded in the bridge structures. The invention belongs to the technical field of auxiliary functional parts of bridges.
Description
Technical Field
The invention relates to a seamless telescopic device, in particular to an interface strong-adhesion type seamless telescopic device and a construction method thereof, and belongs to the technical field of auxiliary functional parts of bridges.
Background
With the increasing highway mileage in China, the number of bridges is also increasing at the rate of tens of thousands of seats per year. Meanwhile, higher requirements are also put forward on the aspects of the design, the service capability, the service life and the like of the bridge. The bridge expansion device is an important functional part in a bridge structure, is a connecting device arranged between bridge beam ends or between the beam ends and bridge abutments, and is mainly used for adapting to deformation caused by temperature and humidity changes, concrete shrinkage and creep, bridge abutment settlement, beam end rotation and the like, and ensuring smooth bridge deck and comfortable driving.
However, bridge expansion joints are also a weak link in bridge construction. The expansion device directly bears the repeated impact action of the driving load in the vertical direction, must adapt to the expansion deformation of the bridge in the horizontal direction, and is exposed in the atmosphere for a long time. Therefore, under the condition of long-time relatively severe service, the expansion device is easy to damage and difficult to maintain after being damaged, and the service life of the whole bridge is greatly shortened.
Although the traditional expansion device (namely the expansion device provided with the deformation joint) has a longer application history, the defects of poor flatness, easy formation of pit and groove damage, notch blockage and the like are increasingly prominent in the service process of the bridge. The fundamental cause of the damage is 'discontinuity' of the bridge deck structure, so that the development of a seamless expansion device for realizing 'continuity' of the bridge deck is one of important ways for solving the defects of the traditional expansion joints. The seamless type telescoping device that provides among the prior art has simple structure, steady comfortable, construction period is short, maintain convenient and can effectively reduce the advantage of engineering maintenance cost, has overcome traditional expansion joint easy seepage, corrosion resistance is poor, the travelling comfort is poor, shortcomings such as life-span is short under more abominable service condition. But the seamless telescopic device also has an application bottleneck which is not broken through at present, the notch filling material is soft in material and low in rigidity, and large permanent deformation and crack damage are easy to occur under the coupling action of the vehicle and the temperature; the interface between the filling material and the bridge deck pavement layer is easy to be debonded, and the damage such as edge gnawing damage on the two sides of the expansion joint is caused. Therefore, the durability of the seamless telescopic device is generally poor at the present stage, and the application thereof is not popularized.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to solve the problem that the existing seamless expansion device is poor in durability universality, and further provides a strong-interface bonding type seamless expansion device and a construction method thereof.
The technical scheme adopted by the invention for solving the problems is as follows:
the interface strong bonding type seamless expansion device comprises an expansion joint filler, a bridge deck pavement layer and bridge structures, wherein the two bridge structures are arranged side by side, a beam joint is arranged between the two bridge structures, the bridge deck pavement layer is positioned on the upper surfaces of the two bridge structures, a filling space is formed in the upper surface of the bridge deck pavement layer, the interface strong bonding type seamless expansion device further comprises a transition bonding layer, a stress absorption layer and a seam crossing assembly, the seam crossing assembly is connected with the beam joint, the two transition bonding layers are respectively connected with the inner side wall of the bridge deck pavement layer, and the stress absorption layer and the expansion joint filler are sequentially filled on the upper surface of the bridge structures from bottom to top and are positioned in the filling space between the two transition bonding layers.
Furthermore, the seam crossing assembly comprises a seam crossing plate, a sponge body and an anti-crack sticker, wherein the sponge body is positioned in the beam seam, and the sponge body is provided with a slot matched with the seam crossing plate; the seam crossing plate is a T-shaped plate body, vertical ribs of the seam crossing plate are inserted into the slots of the sponge body, and transverse plates of the seam crossing plate are positioned on the upper surfaces of the two bridge structures; the anti-crack paste is positioned on the contact surface between the upper surface of the bridge structure and the lower surface of the cross plate of the seam crossing plate.
Further, the seamless telescoping device that bonds by force in interface still includes the reinforcement muscle subassembly, and the reinforcement muscle subassembly is pre-buried in the bridge structures.
Furthermore, each reinforcing rib assembly comprises embedded steel bars and a plurality of transverse bridge steel bars, the embedded steel bars are formed by cross combination of rectangular steel bars and door-shaped steel bars, the lower parts of the rectangular steel bars and the door-shaped steel bars are embedded in the bridge structure, the end parts of the rectangular steel bars are embedded in the expansion joint filler, and the height of the end parts of the rectangular steel bars exceeding the bottom surface of the expansion joint filler is not more than 40 cm; a plurality of transverse bridge-direction reinforcing steel bars are buried in the bridge structure, and the central line of the transverse bridge-direction reinforcing steel bars in the length direction is parallel to the central line of the bridge structure in the length direction.
Further, the width of the seam crossing plate is not less than 2.5 times the width of the beam seam.
Further, the distance between the upper surface of the stress absorption layer and the upper surface of the seam crossing plate is 1.5 cm; the distance between the upper surface of the stress absorbing layer and the upper surface of the bridge structure was 2.5 cm.
Furthermore, the filling space of the slot in the bridge pavement layer is of a sine curve structure, and the curve parameters are as follows: the wavelength is 2 π and the peak is 1/3.
Furthermore, the transition adhesive layer is of a sine belt-shaped structure attached to the inner side wall of the filling space.
Further, the construction method comprises the following steps:
step one, grooving and cleaning work:
according to the design line type and the design size of the filling space, slotting work is carried out on the bridge pavement layer in a symmetrical mode by taking the center of the expansion joint as an axis, and corresponding notch cleaning treatment work is carried out, so that the filling space is ensured to be clean and dry;
step two, embedding the reinforcing rib assembly:
carrying out machining work in advance according to the design size of the reinforcing rib assembly, carrying out binding operation, embedding the reinforcing rib assembly in a bridge structure at equal intervals along the central line of the bridge expansion joint, and strictly controlling the embedding depth of the reinforcing rib assembly;
step three, paving a seam crossing plate:
the method comprises the steps of paving anti-crack pastes on contact surfaces of the seam crossing plates and bridge structures, then paving the seam crossing plates on beam seams and installing sponge bodies, wherein the seam crossing plates can be spliced seam crossing plates under the condition that the length of the seam crossing plates is not enough, the distance between the spliced seam crossing plates is not more than 1mm, and the height difference is not more than 5 mm.
Step four, designing a transition bonding layer:
reserving 1 cm-wide sinusoidal band-shaped gaps which are as deep as a telescopic device in the filling space and close to the two side walls of the bridge deck pavement layer along the cross section direction of the road surface, wrapping a sine-shaped wood plate processed in advance by using a silica gel plate to be tightly attached to the side walls of the pavement layer, starting paving an expansion joint filler, immediately taking out the wood plate and the silica gel plate after the expansion joint filler is compacted, and filling a transitional bonding layer material into the reserved 1 cm-wide gaps;
fifthly, paving the stress absorption layer and the expansion joint filler:
spraying a proper amount of uniform transitional bonding layer material on the bottom surface of the filling space and the top surface of the seam crossing plate, spraying a proper amount of equal-particle-size crushed stone next to the transitional bonding layer material, rolling to form a stable stress absorption layer, ensuring that the asphalt material is extruded to about 4/5 of the height of the crushed stone after the crushed stone layer is compacted, and then starting to cast the filling material for the expansion joint in situ; the preparation of the expansion joint filler is carried out synchronously during the early preparation, a heating mixing device is used for mixing a mixture, aggregate in a corresponding proportion is dried and heated to the temperature of about 200-220 ℃, then the mixture and the modified asphalt cement heated to 200-210 ℃ are put into a mixer for mixing, the mixture is poured into a filling space reserved in advance layer by layer after being discharged, and a small-sized road roller is used for rolling and compacting the mixture layer by layer until the height of the top surface of the expansion joint is on the same horizontal plane with the bridge surfaces on two sides, so that the interface strong-bonding type seamless expansion device meeting the bearing capacity requirement and the expansion deflection requirement is finally formed.
The invention has the beneficial effects that:
1. the sine type expansion device provided by the invention breaks through the traditional junction form of the expansion joint of the seamless bridge and the original road surface, and weakens the influence generated by the interface tensile stress and the shearing stress; the interface bonding force between the expansion device and the bridge deck pavement layer is further enhanced by the design of the transition bonding layer. The double measures are favorable for the bridge structure to form a horizontal and continuous whole from different angles, and effectively relieve the appearance of interface debonding which is one of the main defects of the existing seamless telescopic device.
2. The stress absorption layer provided by the invention can effectively absorb and disperse the concentrated stress generated at the edges of the seam crossing plate, the anchoring reinforcing steel bar and the like, reduces the defects of bridge deck cracks and the like easily generated by the traditional bridge expansion device, prolongs the service life of the bridge, and improves the driving comfort and the bridge deck attractiveness.
3. The reinforcing rib component designed by the invention strengthens the connectivity between the asphalt mixture filler and the bridge structure, realizes the formation of a 'whole' layered structure, ensures that the structure has higher rigidity in the vertical direction to bear the load of a vehicle, and further strengthens the bearing capacity and the impact resistance of the bridge expansion device.
4. The invention has larger deformation capability in the longitudinal direction of the bridge and can adapt to the deformation of the upper structure of the bridge caused by the action of temperature change, traffic load and the like.
5. The invention has the advantages of short construction period, easy maintenance and repair, good sealing performance, good corrosion resistance and the like, and effectively relieves various problems of the existing bridge expansion device.
6. The invention is not only suitable for the installation of the newly-built bridge expansion device, but also suitable for the old bridge reconstruction project.
Drawings
FIG. 1 is a longitudinal bridge cross-sectional view of the interface strong-adhesion seamless expansion device of the present invention,
wherein 1 represents an expansion joint filler, 2 represents a bridge deck pavement layer, 2-1 represents a filling space, 3 represents a bridge structure, 3-1 represents a beam joint, 4 represents a transition bonding layer, 5 represents a stress absorption layer, 6 represents a seam crossing plate, 7 represents a sponge body, 8 represents an anti-crack paste, and 9 represents a reinforcing rib component;
FIG. 2 is a schematic view of a reinforcing rib structure of the interface strong-bonding type seamless expansion device according to the present invention,
wherein 91 represents pre-embedded steel bars of a bridge structure, 92 represents transverse bridge-direction steel bars, and 93 represents anchoring steel bars;
fig. 3 is a schematic three-dimensional structure diagram of the interface strong-bonding type seamless telescopic device in the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 3, and the interface strong-adhesion type seamless expansion device in the present embodiment includes an expansion joint filler 1, a bridge deck pavement layer 2 and a bridge structure 3, the two bridge structures 3 are arranged side by side, a beam gap 3-1 is arranged between the two bridge structures 3, the bridge deck pavement layer 2 is located on the upper surfaces of the two bridge structures 3, and a filling space 2-1 is opened on the upper surface of the bridge deck pavement layer 2, and is characterized in that: the interface strong bonding type seamless expansion device further comprises transition bonding layers 4, stress absorbing layers 5 and a joint crossing assembly, wherein the joint crossing assembly is connected with the beam joint 3-1, the two transition bonding layers 4 are respectively connected with the inner side wall of the bridge deck pavement layer 2, and the stress absorbing layers 5 and the filling expansion joints 1 are sequentially filled on the upper surface of the bridge structure 3 from bottom to top and are positioned in a filling space 2-1 between the two transition bonding layers 4.
The size of the filling space 2-1 is far larger than the width of the beam seam 3-1; the expansion joint filling material 1 is made of mixture materials such as high-viscosity high-elasticity asphalt mixture or rubber modified asphalt mixture; the distance between the upper surface of the stress absorption layer 5 and the top surface of the bridge structure 3 is 2.5cm, and high-viscosity high-elasticity asphalt or rubber modified asphalt and other asphalt materials are adopted. The stress absorbing layer 5 can effectively absorb and disperse the concentrated stress generated at the edges of the seam crossing plate 6, the anchoring reinforcing steel bars and the like. The two bridge structures 3 are both beam bodies; or the two bridge structures 3 are respectively a beam body and a bridge abutment.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 and 3, and the seam crossing assembly of the present embodiment includes a seam crossing plate 6, a sponge body 7, and a crack resistant sticker 8. The sponge body 7 is positioned in the beam gap 3-1, and the sponge body 7 is provided with a slot for matching with the gap crossing plate 6; the seam crossing plate 6 is a T-shaped plate formed by a transverse plate and vertical ribs through fillet welding, the welding seam adopts a II-level welding seam, the seam crossing plate 6 is made of a thin steel plate or other hard sheet materials, the vertical ribs of the seam crossing plate 6 are inserted into the slots of the sponge body 7, and the transverse plate of the seam crossing plate 6 is positioned on the upper surfaces of the two bridge structures 3; the anti-crack paste 8 is positioned on the contact surface of the upper surface of the bridge structure 3 and the lower surface of the transverse plate of the seam crossing plate 6. The main effect of cavernosum 7 is to prevent to stride seam board 6 corrosion, also plays the guard action that prevents the expansion joint filler material and leak down simultaneously.
The eight top angles of the seam crossing plate 6 are in different shapes. Four top corners of the bottom layer, which are directly contacted with the bridge structure 3, of the seam crossing plate 6 are rectangular edges; the edge shape of four top corners of the top layer is different from the conventional shape: one end of the seam crossing plate in lap joint with the anchoring rib 5-3 is provided with a rectangular edge; the other end adopts a circular arc edge. The special treatment of the vertex angle of the seam crossing plate can effectively reduce the stress concentration phenomenon caused by the seam crossing plate, thereby reducing the occurrence of diseases such as reflection cracks and the like.
Other components and connections are the same as those in the first embodiment.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 3, and the interface strong-adhesion seamless expansion device of the present embodiment further includes a reinforcing bar assembly 9, and the reinforcing bar assembly 9 is embedded in the bridge structure 3.
Other components and connections are the same as in one or both of the embodiments.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 2, each reinforcing bar assembly 9 in the embodiment includes an embedded bar 91 and a plurality of transverse bridge bars 92, the embedded bar 91 is formed by cross-combining rectangular bars and n-shaped bars, the lower portions of the rectangular bars and the n-shaped bars are both embedded in the bridge structure 3, the end portions of the rectangular bars are embedded in the expansion joint filler 1, and the height of the end portions of the rectangular bars exceeding the bottom surface of the expansion joint filler 1 is not more than 40 cm; the plurality of transverse bridge-direction reinforcing bars 92 are embedded in the bridge structure 3, and the center line of the transverse bridge-direction reinforcing bars 92 in the longitudinal direction is parallel to the center line of the bridge structure 3 in the longitudinal direction.
The reinforcing rib assembly 9 further comprises an anchoring rib 93, and if the two bridge structures 3 are both beam bodies, the anchoring rib 93 can be lapped with the seam crossing plates 6 on any side; if the two bridge structures 3 are respectively a beam body and an abutment, the anchoring rib 93 is positioned on one side of the abutment, the anchoring rib 93 and the seam crossing plate 6 are welded on two sides, and the length of a welding seam is not less than 5 d.
Other components and connection relationships are the same as those in the first, second or third embodiment.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1 and 3, and the width of the slit spanning plate 6 of the present embodiment is not less than 2.5 times the width of the beam slit 3-1.
Other components and connections are the same as those of the first, second, third or fourth embodiments.
The sixth specific implementation mode: the present embodiment is described with reference to fig. 1, 2, and 3, and the distance between the upper surface of the stress absorbing layer 5 and the upper surface of the seam crossing plate 6 in the present embodiment is 1.5 cm; the distance between the upper surface of the stress absorbing layer 5 and the upper surface of the bridge structure 3 was 2.5 cm.
Other components and connection relationships are the same as those in the first, second, third, fourth or fifth embodiment.
The seventh embodiment: referring to fig. 1 and 3, the present embodiment is described, in which the filling space 2-1 of the bridge pavement 2, which is provided with a groove, is a sinusoidal structure, and the curve parameters are as follows: the wavelength is 2 π and the peak is 1/3.
Other components and connection relationships are the same as those in the first, second, third, fourth, fifth or sixth embodiment.
The specific implementation mode is eight: the present embodiment will be described with reference to fig. 1 and 3, and the intermediate adhesive layer 4 of the present embodiment has a sinusoidal band-shaped structure attached to the inner wall of the filling space 2-1. The transition bonding layer 4 is preferably made of high-viscosity high-elasticity asphalt or rubber modified asphalt and other asphalt materials.
The specific implementation method nine: the present embodiment is described with reference to fig. 1 to 3, and the construction method according to the present embodiment includes the steps of:
step one, grooving and cleaning work:
according to the design line type and the design size of the filling space 2-1, slotting work is carried out on the bridge pavement layer 2 in a symmetrical mode by taking the center of the expansion joint as an axis, corresponding notch cleaning work is carried out, and the filling space 2-1 is ensured to be clean and dry;
step two, embedding the reinforcing rib assembly 9:
carrying out machining work in advance according to the design size of the reinforcing rib assemblies 9, carrying out binding operation, burying the reinforcing rib assemblies 9 in the bridge structure 3 at equal intervals along the center line of the bridge expansion joint, and strictly controlling the burying depth of the reinforcing rib assemblies 9;
step three, paving a seam crossing plate 6:
the method comprises the steps of paving anti-crack stickers 8 on contact surfaces of seam crossing plates 6 and bridge structures 3, then paving the seam crossing plates 6 on beam seams 3-1 and installing sponge bodies 7, wherein the seam crossing plates 6 can be spliced seam crossing plates under the condition that the length is not enough, the distance between the spliced seam crossing plates is not more than 1mm, and the height difference is not more than 5 mm.
Step four, designing a transition bonding layer 4:
reserving sine belt-shaped gaps with the width of 1cm and the same depth as a telescopic device in the cross section direction of the pavement on the two side walls of the filling space 2-1 close to the bridge deck pavement layer 2, wrapping a sine wood plate processed in advance by using a silica gel plate to be tightly attached to the side walls of the pavement layer, starting paving the expansion joint filler 1, immediately taking out the wood plate and the silica gel plate after the expansion joint filler 1 is compacted, and filling a transitional bonding layer 4 material into the reserved gaps with the width of 1 cm;
step five, paving the stress absorption layer 5 and the expansion joint filler 1:
spraying a proper amount of uniform transitional bonding layer material on the bottom surface of the filling space 2-1 and the top surface of the seam crossing plate 6, immediately spraying a proper amount of crushed stone with equal grain diameter, rolling to form a stable stress absorption layer 5, ensuring that the asphalt material is extruded to about 4/5 of the height of the crushed stone after the crushed stone layer is compacted, and then starting to cast the filling material 1 for the expansion joint in situ; the preparation of the expansion joint filler 1 is carried out synchronously during the early preparation, a heating mixing device is used for mixing a mixture, aggregate in a corresponding proportion is dried and heated to the temperature of about 200-220 ℃, then the mixture and the modified asphalt cement heated to 200-210 ℃ are put into a mixer for mixing, the mixture is poured into a filling space 2-1 reserved in advance layer by layer after being discharged, and a small-sized road roller is used for rolling and compacting the mixture layer by layer until the top surface of the expansion joint is at the same horizontal plane with bridge surfaces at two sides, so that the interface strong-bonding type seamless expansion joint device meeting the bearing capacity requirement and the expansion deflection requirement is finally formed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents, and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a seamless telescoping device of formula that bonds by force in interface, it includes expansion joint filler (1), bridge deck pavement layer (2) and bridge structures (3), two bridge structures (3) set up side by side, are equipped with beam gap (3-1) between two bridge structures (3), and bridge deck pavement layer (2) are located the upper surface of two bridge structures (3), and the upper surface on bridge deck pavement layer (2) is opened there is packing space (2-1), its characterized in that: the interface strong-bonding type seamless telescopic device further comprises a transition bonding layer (4), a stress absorption layer (5) and a joint crossing assembly, wherein the joint crossing assembly is connected with the beam joint (3-1), the two transition bonding layers (4) are respectively connected with the inner side wall of the bridge deck pavement layer (2), and the stress absorption layer (5) and the expansion joint filler (1) are sequentially filled on the upper surface of the bridge structure (3) from bottom to top and are positioned in a filling space (2-1) between the two transition bonding layers (4).
2. The seamless telescopic device with strong bonding interface of claim 1, wherein: the seam crossing assembly comprises a seam crossing plate (6), a sponge body (7) and an anti-cracking sticker (8), the sponge body (7) is located in the beam seam (3-1), and the sponge body (7) is provided with a slot used for being matched with the seam crossing plate (6); the seam crossing plates (6) are T-shaped plate bodies, vertical ribs of the seam crossing plates (6) are inserted into slots of the sponge bodies (7), and transverse plates of the seam crossing plates (6) are positioned on the upper surfaces of the two bridge structures (3); the anti-crack paste (8) is positioned on the contact surface of the upper surface of the bridge structure (3) and the lower surface of the transverse plate of the seam crossing plate (6).
3. The seamless telescopic device with strong bonding interface of claim 1, wherein: the interface strong-bonding seamless telescopic device further comprises a reinforcing rib assembly (9), and the reinforcing rib assembly (9) is embedded in the bridge structure (3).
4. The seamless telescopic device with strong interfacial adhesion according to claim 3, wherein: each reinforcing rib assembly (9) comprises an embedded steel bar (91) and a plurality of transverse bridge-direction steel bars (92), the embedded steel bars (91) are formed by cross combination of rectangular steel bars and door-shaped steel bars, the lower parts of the rectangular steel bars and the door-shaped steel bars are embedded in the bridge structure (3), the end parts of the rectangular steel bars are embedded in the expansion joint filler (1), and the height of the end parts of the rectangular steel bars, which exceed the bottom surface of the expansion joint filler (1), is not more than 40 cm; a plurality of transverse bridge-direction reinforcing steel bars (92) are buried in the bridge structure (3), and the central line of the transverse bridge-direction reinforcing steel bars (92) along the length direction is parallel to the central line of the bridge structure (3) along the length direction.
5. The seamless telescopic device with strong bonding interface of claim 1, wherein: the width of the seam crossing plate (6) is not less than 2.5 times of the width of the beam seam (3-1).
6. The seamless telescopic device with strong bonding interface of claim 1, wherein: the distance between the upper surface of the stress absorption layer (5) and the upper surface of the seam crossing plate (6) is 1.5 cm; the distance between the upper surface of the stress absorption layer (5) and the upper surface of the bridge structure (3) is 2.5 cm.
7. The seamless telescopic device with strong bonding interface of claim 1, wherein: the grooved filling space (2-1) in the bridge pavement layer (2) is of a sine curve structure, and the curve parameters are as follows: the wavelength is 2 π and the peak is 1/3.
8. The seamless telescopic device with strong bonding interface of claim 1, wherein: the transition bonding layer (4) is of a sine belt-shaped structure attached to the inner side wall of the filling space (2-1).
9. The construction method of the interface strong bonding type seamless expansion device according to claim 1, characterized in that: the construction method comprises the following steps:
step one, grooving and cleaning work:
according to the design line type and the design size of the filling space (2-1), slotting work is carried out on the bridge pavement layer (2) in a symmetrical mode by taking the center of the expansion joint as an axis, corresponding notch cleaning treatment work is carried out, and the filling space 2-1 is ensured to be clean and dry;
step two, embedding a reinforcing rib assembly (9):
processing work is carried out in advance according to the design size of the reinforcing rib assembly (9), binding operation is carried out, the reinforcing rib assembly (9) is embedded in the bridge structure (3) at equal intervals along the center line of the bridge expansion joint, and the embedding depth of the reinforcing rib assembly (9) is strictly controlled;
step three, paving a seam crossing plate (6):
the anti-crack paste (8) is paved on the contact surface of the seam crossing plate (6) and the bridge structure (3), then the seam crossing plate (6) is paved on the beam seam (3-1) and the sponge body (7) is installed, the seam crossing plate (6) can be spliced under the condition that the length is insufficient, the space between the spliced seam crossing plates is not more than 1mm, and the height difference is not more than 5 mm.
Step four, designing a transition bonding layer (4):
reserving sinusoidal band-shaped gaps with the width of 1cm and the same depth as a telescopic device on two side walls of the filling space (2-1) close to the bridge deck pavement layer (2) along the cross section direction of the road surface, wrapping a sine-shaped wood plate processed in advance by using a silica gel plate to be tightly attached to the side walls of the pavement layer, starting to pave the expansion joint filler (1), immediately taking out the wood plate and the silica gel plate after the expansion joint filler (1) is compacted, and filling a transitional bonding layer (4) material into the reserved gaps with the width of 1 cm;
fifthly, paving the stress absorption layer (5) and the expansion joint filler (1):
spraying a uniform and proper amount of transitional bonding layer materials on the bottom surface of the filling space (2-1) and the top surface of the seam crossing plate (6), next sprinkling a proper amount of crushed stones with equal grain diameter, rolling to form a stable stress absorption layer (5), ensuring that the asphalt materials are extruded to about 4/5 of the height of the crushed stones after the crushed stones are compacted, and then starting to cast the filling materials (1) for the expansion joints in situ; the preparation method comprises the steps of preparing at the early stage, synchronously preparing the expansion joint filler (1), mixing a mixture by using a heating mixing device, drying and heating the aggregate with a corresponding proportion to the temperature of about 200-220 ℃, then mixing the aggregate and the modified asphalt cement heated to 200-210 ℃ in a mixer, pouring the mixture into a pre-reserved filling space (2-1) in a layering manner after discharging, and performing layering and rolling compaction by using a small-sized road roller until the height of the top surface of the expansion joint and bridge surfaces on two sides are on the same horizontal plane, thereby finally forming the interface strong-bonding type seamless expansion device meeting the bearing capacity requirement and the expansion deflection requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010962555.XA CN112095443A (en) | 2020-09-14 | 2020-09-14 | Interface strong-adhesion type seamless telescopic device and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010962555.XA CN112095443A (en) | 2020-09-14 | 2020-09-14 | Interface strong-adhesion type seamless telescopic device and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112095443A true CN112095443A (en) | 2020-12-18 |
Family
ID=73750954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010962555.XA Pending CN112095443A (en) | 2020-09-14 | 2020-09-14 | Interface strong-adhesion type seamless telescopic device and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112095443A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152270A (en) * | 2021-04-22 | 2021-07-23 | 济南金诺公路工程监理有限公司 | Seamless bridge deck expansion joint device and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040582A (en) * | 2015-07-20 | 2015-11-11 | 浙江工业大学 | Bridge expansion joint structure |
| CN204803705U (en) * | 2015-07-03 | 2015-11-25 | 浙江恒力建设有限公司 | Concrete road surface expansion joint filleting structure |
| CN107237232A (en) * | 2017-07-21 | 2017-10-10 | 中冶南方城市建设工程技术有限公司 | A kind of high-durability cement concrete pavement expansion joint (E.J.) construction and its construction method |
| CN206581145U (en) * | 2017-01-06 | 2017-10-24 | 东南大学 | A kind of concrete-bridge end deck installation structure for exempting from expansion joint |
| CN110965427A (en) * | 2019-12-26 | 2020-04-07 | 中冶南方工程技术有限公司 | Continuous reinforced concrete composite asphalt pavement expansion joint structure and construction method thereof |
-
2020
- 2020-09-14 CN CN202010962555.XA patent/CN112095443A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204803705U (en) * | 2015-07-03 | 2015-11-25 | 浙江恒力建设有限公司 | Concrete road surface expansion joint filleting structure |
| CN105040582A (en) * | 2015-07-20 | 2015-11-11 | 浙江工业大学 | Bridge expansion joint structure |
| CN206581145U (en) * | 2017-01-06 | 2017-10-24 | 东南大学 | A kind of concrete-bridge end deck installation structure for exempting from expansion joint |
| CN107237232A (en) * | 2017-07-21 | 2017-10-10 | 中冶南方城市建设工程技术有限公司 | A kind of high-durability cement concrete pavement expansion joint (E.J.) construction and its construction method |
| CN110965427A (en) * | 2019-12-26 | 2020-04-07 | 中冶南方工程技术有限公司 | Continuous reinforced concrete composite asphalt pavement expansion joint structure and construction method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 四川省公路学会: "《桥梁 道路 隧道 水港——2014年学术交流会议论文》", 31 August 2014 * |
| 林添坂等: "无缝式桥梁伸缩缝性能研究", 《石油沥青》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152270A (en) * | 2021-04-22 | 2021-07-23 | 济南金诺公路工程监理有限公司 | Seamless bridge deck expansion joint device and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201351254Y (en) | Combined type pavement structure base on breakage cement concrete | |
| CN108547195B (en) | Drainage asphalt pavement structure and construction method | |
| CN109826093B (en) | Asphalt concrete seamless expansion device and construction method thereof | |
| CN101892631B (en) | Bridge expansion joint structure and construction technology thereof | |
| WO2018214985A1 (en) | Steel girder pavement structure for high-speed road for bicycle, and roadbed pavement method therefor | |
| CN112095443A (en) | Interface strong-adhesion type seamless telescopic device and construction method thereof | |
| CN213328515U (en) | Expansion joint device is handled to compound long-life road surface tip of rigidity softness based on sponge city | |
| CN210134336U (en) | Novel bridge expansion device capable of being quickly repaired | |
| CN215668820U (en) | New and old bituminous paving meets structure | |
| CN211815556U (en) | Structural system for longitudinal splicing of bridge | |
| CN210262567U (en) | Post-pouring belt for cement concrete pavement | |
| CN210086042U (en) | Prefabricated integral resin concrete telescoping device | |
| CN112095394A (en) | Composite pavement with excellent drainage function and construction method thereof | |
| CN218454330U (en) | Collapsible loess area urban road crack maintenance structure | |
| CN112281561B (en) | Heavy-load long-service-life highway structure and construction method | |
| CN111705640A (en) | Seamless expansion joint structure for bridge joint treatment and construction process thereof | |
| CN216275282U (en) | Splicing width structure of new bridge and old bridge | |
| CN211848692U (en) | Assembled cement concrete pavement structure | |
| CN219690222U (en) | Urban road rut restoration structure | |
| CN215714315U (en) | New and old road bed widens concatenation roadbed structure | |
| CN209779375U (en) | Novel asphalt concrete composite pavement | |
| CN214694965U (en) | Pavement structure with cement concrete slab embedded in asphalt pavement | |
| CN218147593U (en) | Old semi-rigid base asphalt pavement anti-crack reinforcing pavement structure | |
| CN216338788U (en) | Bridge head and road surface connecting structure by using lap joint | |
| CN219690310U (en) | Bridge deck continuous structure that simply supported beam and inverted T bent cap combined together |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201218 |
|
| RJ01 | Rejection of invention patent application after publication |