CN111979909A - Anti-cracking bridge deck expansion joint device and construction method - Google Patents
Anti-cracking bridge deck expansion joint device and construction method Download PDFInfo
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- CN111979909A CN111979909A CN202010897496.2A CN202010897496A CN111979909A CN 111979909 A CN111979909 A CN 111979909A CN 202010897496 A CN202010897496 A CN 202010897496A CN 111979909 A CN111979909 A CN 111979909A
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- 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
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Abstract
The invention discloses an anti-cracking bridge deck expansion joint device and a construction method, the anti-cracking bridge deck expansion joint device comprises a support component (1) and an expansion joint device (2) which is arranged above the support component (1) from bottom to top in sequence, the expansion joint device (2) comprises a telescopic mounting seat (21) and expansion joint baffles (22) which are symmetrically connected to two sides of the top of the telescopic mounting seat (21), an expansion joint (23) is formed between the two expansion joint baffles (22), a plurality of prestressed connecting pieces (24) are arranged on the two expansion joint baffles (22), and the prestressed connecting pieces (24) are symmetrically and coaxially connected to the outer walls of the two expansion joint baffles (22). The invention can change the traditional construction sequence, realize that the concrete is not needed to be cut later, can be cast and molded at one time, and does not need to reserve the reinforcing steel bars, thereby avoiding the problem of the deformation of the reinforcing steel bars at the later stage, and simultaneously, the invention can also effectively avoid the damage phenomenon of various expansion joint devices caused by the concrete breakage, greatly improve the structure safety and reduce the operation cost.
Description
Technical Field
The invention relates to an expansion joint, in particular to an anti-cracking bridge deck expansion joint device and a construction method, which are mainly used for construction of bridge deck expansion joints and belong to the technical field of bridge building construction.
Background
As is well known, an expansion joint is a structural joint provided at an appropriate position along a construction joint direction of a building or a structure to release internal force generated by a change in weather temperature (thermal expansion and cold contraction) and concrete shrinkage in order to prevent a structure from being cracked or damaged by the internal force generated by the structural members when the planar size of the building is large.
Taking a bridge deck of 10cm reinforced concrete and 10cm asphalt as an example, the expansion joint of the traditional bridge deck is roughly constructed in the sequence of pre-buried steel bars → poured concrete → concrete for cutting the groove of the expansion joint → installation of the expansion joint device → paving of asphalt. The reinforcing bar of reserving in actual work progress is a large amount of deformations, and the joint-cutting disintegrating slag is more, and unable accurate installation expansion joint device cuts behind the concrete, wastes time and energy, and because the reservation reinforcing bar warp, the reinforcing bar that later stage leads to long arranging can't the accuracy and penetrates fixedly, can only take the welding or cut off the reservation reinforcing bar, also can't be clean up with the rubbish of expansion joint trench simultaneously, only can bury wherein the construction that carries out next step.
Simultaneously, because pour the precision and the installation accuracy requirement height to the expansion joint, in case pour the precision not enough, need chisel hair or repair during the later stage installation, time interval is long, inevitable can get into some rubbish and by the damage, need clean and repair, the main part is capping back concrete transportation difficulty, has increased material loss, manual work, construction period to increase the cost by a wide margin. The traditional construction method is slow in progress, needs secondary pouring for matching, and is high in transportation cost.
Therefore, the development of an improved bridge deck expansion joint with time saving and high efficiency is a key point for solving the technical problems.
Disclosure of Invention
Aiming at various defects and shortcomings in the background technology, the invention is improved and innovated, and aims to provide a novel concrete-pouring construction method which can change the traditional construction sequence, realize that the concrete is not required to be cut afterwards, can be formed by one-time pouring, does not need to reserve reinforcing steel bars, and further avoid the problem of reinforcing steel bar deformation in the later period.
The invention also aims to realize simple structure and convenient and quick construction, effectively avoid the damage phenomenon of various expansion joint devices caused by concrete crushing, greatly improve the structural safety and reduce the operation cost.
The invention also aims to adapt to the telescopic deformation and small-amount rotary deformation of various bridge superstructure; the bridge deck is paved to form a continuous body, so that the waterproof performance is good; the bicycle does not generate impact and vibration when passing, and has better comfort; the construction is convenient and quick, and the cost is low; the aims of safety, economy and unified durability are fulfilled.
The invention also aims to solve the technical problems that the traditional method needs to be roughened or repaired during later installation, has long time interval, inevitably enters some garbage and is damaged, needs to be cleaned and repaired and the like, thereby achieving the purposes of reducing subsequent construction procedures, reducing material loss, labor and construction period, greatly reducing construction cost and protecting environment.
In order to solve the problems and achieve the purpose, the anti-cracking bridge deck expansion joint device and the construction method are realized by adopting the following design structure and the following technical scheme:
the crack-resistant bridge deck expansion joint device comprises a support component (1) and an expansion joint device (2) arranged above the support component (1) from bottom to top in sequence, wherein the expansion joint device (2) comprises a telescopic mounting seat (21) and expansion joint baffles (22) symmetrically connected to two sides of the top of the telescopic mounting seat (21), an expansion joint (23) is formed between the two expansion joint baffles (22), a plurality of prestressed connecting pieces (24) are arranged on the two expansion joint baffles (22), and the prestressed connecting pieces (24) are symmetrically and coaxially connected to the outer walls of the two expansion joint baffles (22).
As the improvement of the invention, the supporting component (1) comprises a bottom plate (11), a supporting weight member (12) and a cover plate (13), wherein the bottom plate (11), the supporting weight member (12) and the cover plate (13) are sequentially arranged and installed from bottom to top; the novel joint sealing structure is characterized in that a mounting groove (14) is formed between the bottom plate (11) and the upper portion of one end of the cover plate (13), the contraction joint device (2) is clamped in the mounting groove (14), the mounting groove (14) is filled with filler, and flexible filler is filled in the top end of the mounting groove.
As the further improvement of the invention, the whole bottom plate (11) is an L-shaped plate-shaped body component, and a plurality of prestress reinforcing pieces (15) are coaxially arranged on the outer wall of the vertical surface of the plate-shaped body component; the cover plate (13) is integrally a right-angled Z-shaped plate-shaped member, a plurality of prestress supporting pieces (16) are arranged on the outer wall of one side of the plate-shaped member, and the prestress supporting pieces (16) and the prestress reinforcing pieces (15) are symmetrically arranged.
As the further improvement of the invention, the lower part of one end of the bottom plate (11) and one end of the cover plate (13) are provided with the lower baffle plate (17), one end of the lower baffle plate (17) is detachably connected with the bottom plate (11), and the other end is detachably connected with the cover plate (13); an upper baffle (18) is installed on the upper portions of the other ends of the bottom plate (11) and the cover plate (13), one end of the upper baffle (18) is detachably connected with the bottom plate (11), and the other end of the upper baffle is detachably connected with the cover plate (13).
As the above further improvement of the invention, the cover plate (13) is also provided with a plurality of granular anti-skid protrusions (19), and the anti-skid protrusions (19) are arranged on the upper pouring end face of the cover plate (13); the lower baffle (16) and the upper baffle (17) are arc baffles and are positioned at the joint of the bottom plate (11) and the cover plate (13).
As a still further improvement of the present invention, the supporting weight member (12) is an inverted U-shaped ridge, pillar or square member, and is located between the bottom plate (11) and the cover plate (13); the total number of the supporting weight members (12) is set to be a plurality of, the supporting weight members (12) are arranged in rows to be rows, one end of each supporting weight member (12) is fixedly connected with the bottom plate (11), and the other end of each supporting weight member is lapped with the cover plate (13).
As a still further improvement of the invention, the telescopic mounting seat (21) is an elastic inverted convex-shaped or inverted-V-shaped member; the expansion joint baffle (22) is a plate-shaped body component; a plurality of buffer members (25) are arranged in the expansion joint (23) at intervals, the buffer members (25) are damping springs, one end of each damping spring is connected with one expansion joint baffle plate (22), and the other end of each damping spring is connected with the other expansion joint baffle plate (22); the expansion joint (23) is filled with filler (231), and the top end of the expansion joint is filled with flexible filler; the prestress connecting piece (24) is connected with the prestress dispersing layer (3).
As a still further improvement of the above-mentioned invention, the prestressed reinforcement (15) and the prestressed support member (16) are both connected to a prestressed dispersion layer (3), and the prestressed dispersion layer (3) is an expanded mesh, a steel mesh sheet, a reinforcing steel mesh sheet, a galvanized steel mesh sheet, a reinforced metal mesh sheet, or an anti-cracking fireproof steel mesh sheet.
As still further improvement of the above, the present invention provides an anti-cracking bridge deck expansion joint device, a construction method and a construction method thereof, comprising the following construction steps:
step 1, construction preparation, wherein constructors firstly carry out measurement positioning, accurately place the support component (1) at the position of an expansion joint of a bridge deck (4) and temporarily fix the support component;
step 7, after the expansion joint device (2) is installed, filling the inner space of the side wall of the expansion joint device (2) with an extruded sheet;
8, paving a bridge deck top filling layer (6), paving the top filling layer (6) to an expansion joint baffle (22) of the expansion joint device (2), rolling the top filling layer (6) near the expansion joint device (2) by using a small vibratory roller without using a large roller, and ensuring that the expansion joint device (2) does not displace in the rolling process;
and 9, cleaning the extruded sheet in the side wall of the expansion joint device (2), encapsulating by adopting silicone or polysulfide material, and slightly lowering the seal to the top end of the expansion joint device (2).
As a still further improvement of the invention, in the step 2, the prestressed reinforcement (15) and the prestressed support (16) are both bent steel bars with hooks;
in the step 3, the bottom filling layer (5) is one or a mixture of more of high-strength concrete, foam concrete, ceramsite concrete, polyphenyl particle foam concrete, extruded polystyrene board, polystyrene foam plastic board, common concrete, foamed concrete, light concrete, EPS particle concrete or foamed polyurethane,
in the step 8, the top filling layer (6) is asphalt concrete.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention changes the traditional construction sequence, realizes that the concrete can be cast and formed at one time without post-cutting, and the steel bar does not need to be reserved, thereby avoiding the problem of steel bar deformation in the later period;
2. the invention effectively avoids the damage phenomenon of various expansion joint devices caused by concrete crushing, greatly improves the structural safety and reduces the operation cost;
3. the invention can not only adapt to the telescopic deformation and small amount of rotary deformation of various bridge superstructure; the bridge deck is paved to form a continuous body, so that the waterproof performance is good; the bicycle does not generate impact and vibration when passing, and has better comfort; the construction is convenient and quick, and the cost is low; the aim of unifying safety, economy and durability is fulfilled;
4. the invention solves the technical problems that the traditional method needs to be chiseled or repaired during later installation, has long time interval, inevitably enters some garbage and is damaged, needs to be cleaned and repaired and the like, achieves the aims of reducing the subsequent construction procedures, reducing the material loss, labor and construction period, greatly reduces the construction cost and simultaneously achieves the environment protection;
5. the anti-rust layer and the waterproof layer are coated on the outer part of the pay-off device, so that the service life of the whole pay-off device is prolonged while rust is prevented, the environment is protected, resources are saved, meanwhile, the self-luminous fluorescent material is coated on the outer part of the pay-off device, the position of the pay-off device can be clearly marked in a night or dark room and an underground construction environment, a safety prompt effect can be effectively realized, the conspicuity is improved, people can easily distinguish the pay-off device, and the safety in construction and life is improved;
6. the invention simplifies the construction process flow, avoids secondary construction operation, shortens the construction time, reduces the environmental pollution, reduces the transportation cost, accelerates the construction progress, fills the asphalt hemp thread in the middle of the expansion joint, and is cast and molded with concrete once after the installation is finished.
Drawings
Embodiments of the invention are described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is one of the overall structural schematic diagrams of the present invention;
FIG. 2 is a second schematic view of the overall structure of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic view of a portion of the position A shown in FIG. 3;
FIG. 5 is one of the schematic views of the present invention in use;
FIG. 6 is a second schematic view of the present invention in use;
FIG. 7 is a third schematic view of the present invention in use;
FIG. 8 is a partially enlarged schematic view of the position B shown in FIG. 7;
FIG. 9 is a fourth schematic view of the present invention in use;
FIG. 10 is a schematic view of the installation of the present invention in use;
FIG. 11 is a schematic view of another alternative design configuration of the present invention in use;
wherein, the reference numbers in the figures: 1-support component, 11-bottom plate, 12-support counterweight member, 13-cover plate, 14-mounting groove, 15-prestress reinforcing piece, 16-prestress supporting piece, 17-lower baffle, 18-upper baffle, 19-antiskid protuberance;
2-expansion joint device, 21-telescopic mounting base, 22-expansion joint baffle, 23-expansion joint, 231-filler, 24-prestressed connecting piece and 25-buffer piece;
3-a pre-stress dispersion layer;
4-abutment;
5-an underfill layer;
6-top filling layer.
Detailed Description
In order to make the technical means, the inventive features, the achievement purposes and the effects of the present invention easy to understand, the technical solutions of the present invention are further described in detail with reference to the drawings and the detailed description below, and it is to be noted that the embodiments and the features in the embodiments in the present application can be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The crack-resistant bridge deck expansion joint device and the construction method thereof as shown in the attached drawings in the specification comprise a support component 1 and an expansion joint device 2, wherein the support component 1 and the expansion joint device 2 are sequentially installed from bottom to top, the expansion joint device 2 comprises a telescopic installation seat 21 and expansion joint baffles 22 which are symmetrically connected to two sides of the top of the telescopic installation seat 21, an expansion joint 23 is formed between the two expansion joint baffles 22, a plurality of prestressed connecting pieces 24 are also arranged on the two expansion joint baffles 22, and the prestressed connecting pieces 24 are symmetrically and coaxially connected to the outer walls of the two expansion joint baffles 22.
Further, the support assembly 1 comprises a bottom plate 11, a support weight member 12 and a cover plate 13, wherein the bottom plate 11, the support weight member 12 and the cover plate 13 are sequentially arranged from bottom to top; a mounting groove 14 is formed between the bottom plate 11 and the upper part of one end of the cover plate 13, the contraction joint device 2 is clamped in the mounting groove 14, the mounting groove 14 is filled with filler, and the top end of the mounting groove is filled with flexible filler.
Specifically, the whole bottom plate 11 is an L-shaped plate-shaped member, and a plurality of pre-stress reinforcing pieces 15 are coaxially arranged on the outer wall of the vertical surface of the plate-shaped member; the whole cover plate 13 is a plate-shaped member in a right-angled Z shape, a plurality of prestressed supporting members 16 are arranged on the outer wall of one side of the plate-shaped member, and the prestressed supporting members 16 and the prestressed reinforcing members 15 are symmetrically arranged.
Specifically, a lower baffle 17 is arranged at the lower part of one end of the bottom plate 11 and one end of the cover plate 13, one end of the lower baffle 17 is detachably connected with the bottom plate 11, and the other end of the lower baffle 17 is detachably connected with the cover plate 13; an upper baffle plate 18 is arranged on the upper portions of the other ends of the bottom plate 11 and the cover plate 13, one end of the upper baffle plate 18 is detachably connected with the bottom plate 11, and the other end of the upper baffle plate 18 is detachably connected with the cover plate 13.
More specifically, the cover plate 13 is further provided with a plurality of granular anti-skid protrusions 19, and the anti-skid protrusions 19 are arranged on the pouring end face of the upper end of the cover plate 13; the lower baffle 16 and the upper baffle 17 are arc baffles and are positioned at the connecting part of the bottom plate 11 and the cover plate 13.
Further, the supporting weight member 12 is an inverted U-shaped ridge-shaped or pillar-shaped or square-shaped member, and is located between the bottom plate 11 and the cover plate 13; the total number of the supporting weight members 12 is set to be plural, the plural supporting weight members 12 are arranged in rows and are arranged in rows, and one end of the supporting weight member 12 is fixedly connected with the bottom plate 11, and the other end is overlapped with the cover plate 13.
Furthermore, the telescopic mounting base 21 is an elastic inverted convex-shaped or inverted-; the expansion joint baffle 22 is a plate-shaped body component; a plurality of buffer members 25 are arranged in the expansion joint 23 at intervals, the buffer members 25 are damping springs, one end of each damping spring is connected with one expansion joint baffle plate 22, and the other end of each damping spring is connected with the other expansion joint baffle plate 22; the expansion joint 23 is filled with a filler 231, and the top end of the expansion joint is filled with a flexible filler; the prestress connecting piece 24 is connected with the prestress dispersion layer 3.
Specifically, the prestress reinforcing member 15 and the prestress supporting member 16 are both connected with a prestress dispersion layer 3, and the prestress dispersion layer 3 is an expansion net, a steel plate net, a steel wire mesh sheet, a reinforcing steel bar mesh sheet, a galvanized steel wire mesh or a reinforced metal mesh sheet or an anti-cracking fireproof steel bar mesh sheet.
Further, an anti-cracking bridge deck expansion joint device, a construction method and a construction method thereof comprise the following construction steps:
step 1, construction preparation, wherein constructors firstly carry out measurement positioning, accurately place the support component 1 at the position of an expansion joint of a bridge deck 4 and temporarily fix the support component;
step 7, after the expansion joint device 2 is installed, filling the inner gap of the side wall of the expansion joint device 2 with an extruded sheet;
step 8, paving a bridge deck top filling layer 6, paving the top filling layer 6 to an expansion joint baffle 22 of the expansion joint device 2, and rolling the top filling layer 6 near the expansion joint device 2 by using a small-sized vibratory roller without using a large-sized roller, so that the expansion joint device 2 is ensured not to be displaced in the rolling process;
and 9, cleaning the extruded sheet in the side wall of the expansion joint device 2, encapsulating by adopting silicone or polysulfide material, and slightly lowering the seal to the top end of the expansion joint device 2.
Specifically, in step 2, the pre-stressed reinforcing member 15 and the pre-stressed supporting member 16 are both bent reinforcing steel bars with hooks;
in the step 3, the bottom filling layer 5 is one or a mixture of more of high-strength concrete, foam concrete, ceramsite concrete, polyphenyl particle foam concrete, extruded polystyrene board, polystyrene foam plastic board, common concrete, foamed concrete, light concrete, EPS particle concrete or foamed polyurethane,
in the step 8, the top filling layer 6 is asphalt concrete.
In the invention, the bottom filling layer 5 is high-strength light polyphenyl granule concrete; the high-strength light polyphenyl particle concrete is internally provided with a cement-based heat-insulation and noise-elimination layer, a metal plate layer, a rock wool plate layer, a damping layer, a waterproof layer and a stress dispersion layer, wherein the cement-based heat-insulation and noise-elimination layer, the metal plate layer, the rock wool plate layer, the waterproof layer and the stress dispersion layer are sequentially stacked or mixed together.
The outer surfaces of the supporting component 1, the expansion joint device 2 and the prestress dispersion layer 3 are coated with an injection molding layer, an anti-rust layer, a waterproof layer and a warning layer from inside to outside in sequence, and fluorescent powder is coated on the warning layer.
Specifically, a high-molecular wear-resistant material is injected on the injection molding layer; the anti-rust layer comprises epoxy zinc-rich primer, chlorinated rubber finish paint and epoxy mica iron intermediate paint positioned between the epoxy zinc-rich primer and the chlorinated rubber finish paint; the waterproof layer is polyurethane waterproof paint; the warning layer is yellow or black reflecting warning belt or reflecting color film or reflecting paint
Meanwhile, in the invention, the connection is fixed connection or movable connection or detachable connection, wherein the fixed connection is welded connection or is directly processed into an integrally formed structure; the movable connection or the detachable connection is hinged connection, threaded connection, bayonet connection, plug connection or bolt component connection or screw connection.
Finally, it should be noted that the conception, specific structure and technical effects of the present invention have been clearly and completely described above in connection with the embodiments and the accompanying drawings, so that the objects, features and effects of the present invention can be fully understood. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection and connection relationships mentioned herein do not mean that the components are directly connected, but mean that a more preferable connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.
Claims (10)
1. The utility model provides an anti cracking type bridge floor expansion joint device, its characterized in that, it includes supporting component (1) of installing according to the preface from bottom to top and installs in expansion joint device (2) of supporting component (1) top, expansion joint device (2) include scalable mount pad (21) and symmetric connection in expansion joint baffle (22) of scalable mount pad (21) top both sides, form expansion joint (23) between two expansion joint baffles (22), still all are equipped with a plurality of prestressing force connecting piece (24) on two expansion joint baffles (22), and prestressing force connecting piece (24) symmetric coaxial coupling is on the outer wall of two expansion joint baffles (22).
2. The anti-cracking bridge deck expansion joint device according to claim 1, wherein the supporting assembly (1) comprises a bottom plate (11), a supporting weight member (12) and a cover plate (13), wherein the bottom plate (11), the supporting weight member (12) and the cover plate (13) are sequentially arranged from bottom to top; the novel joint sealing structure is characterized in that a mounting groove (14) is formed between the bottom plate (11) and the upper portion of one end of the cover plate (13), the contraction joint device (2) is clamped in the mounting groove (14), the mounting groove (14) is filled with filler, and flexible filler is filled in the top end of the mounting groove.
3. The anti-cracking bridge deck expansion joint device according to claim 2, wherein the base plate (11) is an L-shaped plate-shaped member, and a plurality of pre-stressed reinforcing members (15) are coaxially arranged on the outer wall of the vertical face of the plate-shaped member; the cover plate (13) is integrally a right-angled Z-shaped plate-shaped member, a plurality of prestress supporting pieces (16) are arranged on the outer wall of one side of the plate-shaped member, and the prestress supporting pieces (16) and the prestress reinforcing pieces (15) are symmetrically arranged.
4. The anti-cracking bridge floor expansion joint device according to claim 2 or 3, wherein a lower baffle (17) is mounted at the lower part of one end of the bottom plate (11) and one end of the cover plate (13), one end of the lower baffle (17) is detachably connected with the bottom plate (11), and the other end of the lower baffle is detachably connected with the cover plate (13); an upper baffle (18) is installed on the upper portions of the other ends of the bottom plate (11) and the cover plate (13), one end of the upper baffle (18) is detachably connected with the bottom plate (11), and the other end of the upper baffle is detachably connected with the cover plate (13).
5. The anti-cracking bridge floor expansion joint device according to claim 4, wherein a plurality of granular anti-skid protrusions (19) are further arranged on the cover plate (13), and the anti-skid protrusions (19) are arranged on the upper pouring end face of the cover plate (13); the lower baffle (16) and the upper baffle (17) are arc baffles and are positioned at the joint of the bottom plate (11) and the cover plate (13).
6. The anti-cracking bridge floor expansion joint device according to claim 2, wherein the supporting weight member (12) is an inverted U-shaped ridge or pier column or square member, and is located between the bottom plate (11) and the cover plate (13); the total number of the supporting weight members (12) is set to be a plurality of, the supporting weight members (12) are arranged in rows to be rows, one end of each supporting weight member (12) is fixedly connected with the bottom plate (11), and the other end of each supporting weight member is lapped with the cover plate (13).
7. The anti-cracking bridge deck expansion joint device according to claim 1, wherein the telescopic mounting seat (21) is an elastic inverted-convex-shaped or inverted-; the expansion joint baffle (22) is a plate-shaped body component; a plurality of buffer members (25) are arranged in the expansion joint (23) at intervals, the buffer members (25) are damping springs, one end of each damping spring is connected with one expansion joint baffle plate (22), and the other end of each damping spring is connected with the other expansion joint baffle plate (22); the expansion joint (23) is filled with filler (231), and the top end of the expansion joint is filled with flexible filler; the prestress connecting piece (24) is connected with the prestress dispersing layer (3).
8. An anti-cracking bridge deck expansion joint device according to claim 3, wherein the pre-stress reinforcement (15) and the pre-stress support member (16) are both connected with a pre-stress dispersion layer (3), the pre-stress dispersion layer (3) is an expansion net, a steel plate net, a steel wire mesh sheet, a reinforcing steel bar mesh sheet, a galvanized steel wire mesh sheet or a ribbed metal mesh sheet or an anti-cracking fireproof steel bar mesh sheet, and the pre-stress dispersion layer (3) is an expansion net, a steel plate net, a steel wire mesh sheet, a reinforcing steel bar mesh sheet, a galvanized steel wire mesh sheet.
9. An anti-cracking bridge deck expansion joint device, a construction method and a construction method thereof are characterized by comprising the following construction steps:
step 1, construction preparation, wherein constructors firstly carry out measurement positioning, accurately place the support component (1) at the position of an expansion joint of a bridge deck (4) and temporarily fix the support component;
step 2, paving a prestress dispersion layer (3) on the bridge deck (4), connecting the prestress dispersion layer (3) with a prestress reinforcing piece (15) and a prestress supporting piece (16) on the side part of the supporting component (1), and firmly welding the positions of the hook connections;
step 3, temporarily closing the upper opening of the support component (1) by using an extruded sheet, pouring a bottom filling layer (5) paved on the bridge deck (4), wherein the height of the bottom filling layer (5) paved on the bridge deck (4) is flush with the upper opening of the support component (1), and ensuring that the support component (1) does not displace in the concrete pouring process;
step 4, paving the bottom filling layer (5) on the bridge deck (4) for maintenance, and encapsulating the supporting component (1) and the bottom filling layers (5) on the two sides by hot asphalt if gaps exist;
step 5, cleaning the extruded sheet, installing the expansion joint device (2), and accurately inserting the convex opening of the expansion joint device (2) into the concave opening of the support component (1);
step 6, before paving an asphalt mixture surface layer, spraying adhesive layer asphalt on the outer side wall of the expansion joint device (2), installing a prestress dispersion layer (3), connecting the prestress dispersion layer (3) with a prestress connecting piece (24) in the expansion joint device (2), and firmly welding at a hook connecting part, and integrally fixing the prestress dispersion layer (3) and the prestress connecting piece (24) on the formed concrete bridge deck;
step 7, after the expansion joint device (2) is installed, filling the inner space of the side wall of the expansion joint device (2) with an extruded sheet;
8, paving a bridge deck top filling layer (6), paving the top filling layer (6) to an expansion joint baffle (22) of the expansion joint device (2), rolling the top filling layer (6) near the expansion joint device (2) by using a small vibratory roller without using a large roller, and ensuring that the expansion joint device (2) does not displace in the rolling process;
and 9, cleaning the extruded sheet in the side wall of the expansion joint device (2), encapsulating by adopting silicone or polysulfide material, and slightly lowering the seal to the top end of the expansion joint device (2).
10. The anti-cracking bridge deck expansion joint device and the construction method thereof according to claim 9, wherein in the step 2, the pre-stressed reinforcing member (15) and the pre-stressed supporting member (16) are both bent steel bars with hooks;
in the step 3, the bottom filling layer (5) is one or a mixture of more of high-strength concrete, foam concrete, ceramsite concrete, polyphenyl particle foam concrete, extruded polystyrene board, polystyrene foam plastic board, common concrete, foamed concrete, light concrete, EPS particle concrete or foamed polyurethane,
in the step 8, the top filling layer (6) is asphalt concrete.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010897496.2A CN111979909A (en) | 2020-08-31 | 2020-08-31 | Anti-cracking bridge deck expansion joint device and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010897496.2A CN111979909A (en) | 2020-08-31 | 2020-08-31 | Anti-cracking bridge deck expansion joint device and construction method |
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| CN111979909A true CN111979909A (en) | 2020-11-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814040A (en) * | 2021-01-04 | 2021-05-18 | 中国建筑第八工程局有限公司 | Auxiliary device for forming concrete structure and construction method thereof |
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2020
- 2020-08-31 CN CN202010897496.2A patent/CN111979909A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814040A (en) * | 2021-01-04 | 2021-05-18 | 中国建筑第八工程局有限公司 | Auxiliary device for forming concrete structure and construction method thereof |
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