CN112900255A - Novel bridge deck continuous seam crossing plate structure and construction method thereof - Google Patents
Novel bridge deck continuous seam crossing plate structure and construction method thereof Download PDFInfo
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- CN112900255A CN112900255A CN202110345199.1A CN202110345199A CN112900255A CN 112900255 A CN112900255 A CN 112900255A CN 202110345199 A CN202110345199 A CN 202110345199A CN 112900255 A CN112900255 A CN 112900255A
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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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- 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
- E01D19/065—Joints having sliding plates
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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Abstract
The invention relates to a novel bridge deck continuous seam crossing plate structure and a construction method thereof, and the novel bridge deck continuous seam crossing plate structure comprises a seam crossing plate which crosses the upper side of an expansion joint between main beams at two sides of a bridge deck, wherein the seam crossing plate comprises a seam crossing plate body which is horizontally arranged in reserved notches of the expansion joint at the beam ends of the main beams at the two sides of the bridge deck, the left end and the right end of the seam crossing plate body are respectively and fixedly connected with a pi-shaped steel plate, and the pi-shaped steel plate is fixedly connected with the main. The connecting structures of the Pi-shaped steel plates are arranged at the two ends of the joint-crossing plate body, so that the bending rigidity and the axial rigidity of the joint-crossing plate end connection are reduced, the bending moment and the axial force generated by the rotation and the axial deformation of the girder end under the action of various complex loads can be effectively absorbed, and the problems of poor durability and poor service performance caused by the inevitable occurrence of concrete cracking, steel bar corrosion and drainage leakage under the combined action of loads such as live load, temperature change, braking force and the like of an automobile in the use process of the traditional bridge deck continuous structure are solved.
Description
The technical field is as follows:
the invention belongs to the technical field of bridge engineering, and particularly relates to a novel bridge deck continuous seam crossing plate structure and a construction method thereof.
Background art:
the continuous bridge deck structure of the simply supported girder bridge is a continuous integral structure of the bridge deck formed by combining connecting plates and girders, and the girders keep a simple support system. The bridge deck continuous structure is a weak link of a bridge deck continuous simply-supported girder bridge, is positioned at two ends of a simply-supported girder main beam and is positioned at the position where the rotation and axial telescopic deformation of a girder body are the largest, is relatively complex in stress and is easy to crack, damage and other diseases after being put into use.
The continuous structure of the simply supported beam bridge deck can effectively reduce the number of expansion joints of the traditional simply supported beam bridge deck, improves the smoothness of a travelling crane, reduces the workload of maintenance and repair, and is widely adopted by the engineering field. The bridge deck continuous construction that is now common mainly has the following three forms: firstly, a rigid connection type bridge deck continuous structure; secondly, a pull rod type bridge deck continuous structure; thirdly, the continuous structure of the hinged bridge deck.
The rigid connection type bridge deck continuous structure is similar to a fixed end beam embedded in a main beam in structure form, the span of the rigid connection type bridge deck continuous structure is the length of the bridge deck continuous structure, but the structure is easy to crack at the reserved notches and the joints of two ends of the main beam. The pull rod type bridge deck continuous structure enables the whole bridge deck continuous structure to act together with bridge deck pavement as a 'filling section', and wood plates or saw seams are arranged at two ends of the bridge deck continuous structure, so that the bending resistance of the section at the position can be greatly weakened, the bridge deck continuous structure is allowed to rotate on the surface, the restraint of a pavement layer on a beam plate is reduced, the internal force of the pavement layer is reduced, and the positions of the saw seams are easy to crack and are broken under the action of vehicle load. The hinged bridge deck continuous structure is provided with artificial broken joints for the connection reinforcing steel bars to generate micro displacement up and down, and the support deflection angle of the main beam caused by bending can not cause the hinged bridge deck continuous structure to generate bending moment. However, the structure of the mode is complex, the construction is inconvenient, the problem of reinforcing steel bar corrosion caused by water seepage at the hinge joint cannot be solved, and the mode is basically not adopted at present.
Aiming at the problems, various bridge deck continuous seam processing methods are provided, unbonded lengths of 5% -7.5% of the span of the main beam are arranged at the two ends of the main beam, the related transformation lengths are large, for example, an ECC connecting plate fixedly connected with the main beam is arranged above the connecting area of the adjacent main beams, and a sliding layer is arranged between the ECC connecting plate and the main beam, so that the ECC material has the advantages of large transformation length, high manufacturing cost of the ECC material, 10-15 times of that of the traditional concrete material, and is not beneficial to popularization and application. CN108035252A proposes a bridge deck continuous structure of simple supported beam bridge deck suitable for inverted T-shaped cover beam, but its applicable surface is narrow.
The invention content is as follows:
the invention aims at improving the problems in the prior art, namely the invention aims to provide a novel bridge deck continuous seam crossing plate structure and a construction method thereof, which are reasonable in design and good in durability and usability.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a novel seam board structure is striden in succession to bridge floor, includes the seam board of striding across the expansion joint upside between bridge floor both sides girder, stride the seam board and contain the expansion joint that is located bridge floor both sides girder segment end and reserve the inside seam board body of striding of notch, stride the left and right both ends of seam board body respectively fixedly connected with pi shaped steel board, pi shaped steel board and girder fixed connection.
Furthermore, the seam crossing plate body comprises a reinforcement cage and concrete poured inside and outside the reinforcement cage, and the inner side end of the pi-shaped steel plate is fixedly connected with the reinforcement cage.
Furthermore, the reinforcement cage comprises a plurality of rectangular annular stressed reinforcements distributed at intervals along the longitudinal direction, a plurality of longitudinal reinforcements distributed at intervals along the transverse direction are arranged at the upper end and the lower end of the interior of each stressed reinforcement, and the longitudinal reinforcements are bound and fixed with the stressed reinforcements; and the vertical steel plate at the inner side end of the pi-shaped steel plate is welded and fixed with the stressed steel bar.
Furthermore, a plurality of connecting holes are formed in the horizontal steel plate at the bottom of the outer side end of the pi-shaped steel plate at intervals along the longitudinal direction; the bottom of the reserved slot of the expansion joint is pre-embedded with pre-embedded bolts corresponding to the positions of the connecting holes, and the pi-shaped steel plate is in threaded connection with nuts through the pre-embedded bolts penetrating the connecting holes to realize locking and fixing.
Furthermore, bolt sealing concrete is poured on the upper side of the embedded bolt.
Furthermore, a concrete leveling cushion layer is laid at the bottom of the reserved notch of the expansion joint, and the joint crossing plate is located on the upper side of the concrete leveling cushion layer.
Furthermore, a sliding layer is arranged between the concrete leveling cushion layer and the seam crossing plate body, and the sliding layer is positioned between the lower ends of the pi-shaped steel plates at the left end and the right end of the seam crossing plate body.
Further, still including being located the girder and striding the bridge deck pavement layer of seam board upside, the bridge deck pavement layer flushes with the top surface of pi type steel sheet, is equipped with the bridge deck concrete bed course between the top surface of bridge deck pavement layer and girder.
Furthermore, the seam crossing plate is formed by cast-in-place or prefabricated in a factory.
The other technical scheme adopted by the invention is as follows: a construction method of a novel bridge deck continuous seam crossing plate structure comprises the following steps:
(1) the method comprises the following steps of (1) reforming an existing bridge:
step 101: chiseling concrete in reserved notches of expansion joints of main beam ends on two sides of an original bridge deck according to design requirements, and chiseling the height of the reserved notches of the expansion joints to an elevation required by the design requirements;
step 102: drilling a pre-buried bolt hole at the bottom of the reserved notch of the expansion joint by using drilling equipment according to the arrangement of the connecting holes on the pi-shaped steel plate, installing a pre-buried bolt in the pre-buried bolt hole, and then pouring concrete at the bottom of the reserved notch of the expansion joint to level the cushion layer;
step 103: paving a sliding layer on the concrete leveling cushion layer, and locking and fixing the pi-shaped steel plate and the embedded bolt through nuts to realize the fixed connection of the pi-shaped steel plate and the main beam;
step 104: welding and fixing the stressed steel bar and a vertical steel plate at the inner side end of the pi-shaped steel plate, binding a longitudinal steel bar on the stressed steel bar, and forming a steel bar cage by the stressed steel bar and the longitudinal steel bar;
step 105: pouring concrete on the upper sides of the reinforcement cage and the embedded bolts;
step 106: constructing a bridge deck pavement layer after the concrete poured in the step 105 reaches the design strength;
(2) for newly-built bridges:
step 201: according to design requirements, when girder ends on two sides of a bridge deck are constructed, pre-buried bolts are installed according to the arrangement of connecting holes in the Pi-shaped steel plate;
step 202: after the construction of the girders on the two sides of the bridge floor is finished, pouring concrete leveling cushion layers at the bottoms of the reserved notches of the expansion joints at the girder ends of the girders and meeting the strength requirement;
step 203: paving a sliding layer on the concrete leveling cushion layer, and locking and fixing the pi-shaped steel plate and the embedded bolt through nuts to realize the fixed connection of the pi-shaped steel plate and the main beam;
step 204: welding and fixing the stressed steel bar and a vertical steel plate at the inner side end of the pi-shaped steel plate, binding a longitudinal steel bar on the stressed steel bar, and forming a steel bar cage by the stressed steel bar and the longitudinal steel bar;
step 205: pouring concrete on the upper sides of the reinforcement cage and the embedded bolts;
step 206: and (5) after the concrete poured in the step 205 reaches the design strength, constructing a bridge deck pavement layer.
Compared with the prior art, the invention has the following effects:
(1) the structure is simple and clear in stress, easy to design and analyze, small in modification range and suitable for not only the design of a newly-built bridge but also the modification of the existing middle-small span bridge, and can be realized in the reserved groove of the traditional expansion joint;
(2) bending rigidity and axial tension and compression rigidity of the seam crossing plate are reduced through the Pi-shaped steel plates arranged at the two ends of the seam crossing plate, deformation of a main beam can be well adapted, structural stress is small, cracks are not easy to generate, stress performance of the seam crossing plate is improved, and integrity and durability of the seam crossing plate structure are improved;
(3) the beam end corner and the telescopic deformation of the main beam caused by the automobile load, the temperature load, the upper structure shrinkage and the creep of the upper structure are absorbed by the Pi-shaped steel plate, the stress of the seam crossing plate is very small, the seam crossing plate can be constructed by adopting common concrete materials, the manufacturing cost is low, the construction is simple and convenient, and the seam crossing plate is suitable for cast-in-place on site, is also suitable for prefabricated assembly and is easy to popularize and apply.
Description of the drawings:
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
fig. 2 is a schematic front sectional view of the embodiment of the present invention.
In the figure:
1-pi type steel plate; 2, embedding bolts; 3-stressed steel bars; 4-longitudinal steel bars; 5-a seam crossing plate body; 6-bridge deck pavement layer; 7-bridge deck concrete cushion; 8-sealing the bolt concrete; 9-leveling the cushion layer with the concrete; 10-a slip layer; 11 a main beam; 12-an expansion joint; 13-a capping beam; 14-main beam support; 15-reserving a notch at the expansion joint.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1-2, the novel bridge deck continuous seam crossing plate structure is suitable for newly-built bridge design and existing bridge reconstruction, and is used for solving the problems existing in the prior art and the problem that a traditional device is easy to damage, the novel bridge deck continuous seam crossing plate structure comprises a seam crossing plate which crosses the upper side of an expansion joint 12 between girders 11 on two sides of a bridge deck, the seam crossing plate comprises seam crossing plate bodies 5 which are horizontally arranged in expansion joint reserved notches 15 at the girder ends of the girders 11 on two sides of the bridge deck, the left end and the right end of each seam crossing plate body 5 are respectively and fixedly connected with pi-shaped steel plates 1, and the pi-shaped steel plates 1 are fixedly connected with the girders 11. The connecting structures of the Pi-shaped steel plates are arranged at the two ends of the seam crossing plate body, so that the bending rigidity and the axial rigidity of the end connection of the seam crossing plate are reduced, and the bending moment and the axial force generated by the rotation and the axial deformation of the girder end of the main girder under the action of various complex loads can be effectively absorbed.
It should be noted that the inside end and the outside end of the pi-shaped steel plate 1 are both L-shaped composed of a vertical steel plate and a horizontal steel plate, and the inside end and the upper part of the outside end of the pi-shaped steel plate 1 are connected into a whole.
In this embodiment, the seam crossing plate body 5 includes a longitudinally arranged steel reinforcement cage and concrete poured inside and outside the steel reinforcement cage, that is, the seam crossing plate body is of a reinforced concrete structure. The reinforcement cage comprises a plurality of rectangular annular stressed reinforcements 3 which are distributed at intervals along the longitudinal direction, a plurality of longitudinal reinforcements 4 which are distributed at intervals along the transverse direction are arranged at the upper end and the lower end of the interior of each stressed reinforcement 3, and the longitudinal reinforcements 4 are bound and fixed with the stressed reinforcements 3; and the vertical steel plate at the inner side end of the pi-shaped steel plate 1 is welded and fixed with the stressed steel bar 3. In order to improve the structural strength of the stressed steel bar, the stressed steel bar is of a closed loop structure.
In the embodiment, the pi-shaped steel plate 1 can be formed by compression molding of a steel plate or assembly welding of a plurality of steel plates, and a plurality of connecting holes are formed in a horizontal steel plate at the bottom of the outer side end of the pi-shaped steel plate 1 at equal intervals along the longitudinal direction; the bottom of the expansion joint reserved notch 15 is pre-embedded with pre-embedded bolts 2 corresponding to the positions of the connecting holes, the pi-shaped steel plate 1 is in threaded connection with nuts through the pre-embedded bolts 2 penetrating the connecting holes to achieve locking and fixing, and the pi-shaped steel plate is fixedly connected with the main beam.
In this embodiment, the upper side of the embedded bolt 2 is poured with a sealing concrete 8 for sealing the connection structure of the pi-shaped steel plate and the embedded bolt.
In this embodiment, concrete leveling cushion layer 9 has been laid to the bottom of expansion joint reservation notch 15, stride the seam board and be located the upside of concrete leveling cushion layer 9.
In this embodiment, a sliding layer 10 is arranged between the concrete leveling cushion layer 9 and the seam crossing plate body 5, and the sliding layer 10 is located between the lower ends of the pi-shaped steel plates 1 at the left and right ends of the seam crossing plate body 5. Through setting up the sliding layer, can guarantee that reinforced concrete strides and can freely slide between seam board and the girder below it, reduce the restraint between the two, improved the atress performance of striding the seam board to reduce the internal force of board, prevent to stride the crack board fracture.
In this embodiment, still include the bridge deck pavement layer 6 that is located girder 11 and strides seam board upside, bridge deck pavement layer 6 flushes with pi type steel sheet 1's top surface, is equipped with bridge deck concrete cushion 7 between the top surface of bridge deck pavement layer 6 and girder 11.
In this embodiment, the main beams 11 are made of reinforced concrete, the cover beams 13 are arranged on the lower side of the bridge floor, the cover beams 13 are located between the lower portions of the main beams 11 on both sides of the bridge floor, and a main beam support 14 is arranged between each main beam 11 and each cover beam 13. The cross section of the expansion joint reserved groove opening 15 is L-shaped, and the expansion joint reserved groove openings 15 of the main beams 11 on two sides of the bridge deck are arranged downwards to form a rectangular groove structure.
In the embodiment, the thickness of the seam crossing plate is smaller, generally is only 15 cm-25 cm, and the seam crossing plate can be constructed by adopting a common reinforced concrete material; the seam crossing plate can be formed by cast-in-place or prefabricated in factories and then hoisted on site. The implementation length of the span plate is small, and the span plate can be generally realized in a small range, so that the span plate can be widely applied to the expansion joint transformation of the existing small and medium span bridges, has high market value and has wide application prospect.
In this embodiment, when the construction, the expansion joint between the bridge floor both sides girder packs the foaming rod that the height is 5 cm.
In this embodiment, the height of the pi-shaped steel plate 1 can be adjusted according to the bridge deck pavement type of the related bridge and the size of the reserved slot of the expansion joint. For a bridge structure paved with asphalt concrete, the pouring position of the reinforced concrete seam crossing plate can be reduced, so that a space paved with the asphalt concrete is reserved; for the bridge structure paved by the concrete bridge deck, the top surface elevation of the reinforced concrete seam crossing plate and the Pi-shaped steel plate connected with the reinforced concrete seam crossing plate is consistent with the elevation of the bridge deck pavement on the two sides, so that the running smoothness of a vehicle is ensured.
The first embodiment is as follows: the structure adopts cast-in-place construction for the transformation of the existing bridge, and the specific construction method is as follows:
step 101: chiseling concrete in expansion joint reserved notches 26 at beam ends of main beams 22 on two sides of an original bridge deck according to design requirements, and chiseling the height of the expansion joint reserved notches 26 to reach the elevation required by the design requirements;
step 102: drilling a pre-buried bolt hole at the bottom of the reserved slot opening 26 of the expansion joint by using drilling equipment according to the arrangement of the connecting holes on the pi-shaped steel plate 2, installing the pre-buried bolt 2 in the pre-buried bolt hole, and then pouring a concrete leveling cushion layer at the bottom of the reserved slot opening of the expansion joint;
step 103: filling a foaming bar material with the height of 5cm at an expansion joint 12 between main beams 11 at two sides of the bridge deck, and then paving a sliding layer 10 on the concrete leveling cushion layer 9;
step 104: the pi-shaped steel plate 1 and the embedded bolt 2 are locked and fixed through a nut, so that the pi-shaped steel plate is fixedly connected with the main beam;
step 105: welding and fixing the stressed steel bar 3 and a vertical steel plate at the inner side end of the pi-shaped steel plate 1, binding a longitudinal steel bar 4 on the stressed steel bar 3, and forming a steel bar cage by the stressed steel bar 3 and the longitudinal steel bar 4;
step 106: pouring concrete on the upper sides of the reinforcement cage and the embedded bolts 2;
step 107: and (6) after the concrete poured in the step 106 reaches the design strength, constructing a bridge deck pavement layer.
Example two: the structure is used for building a new bridge, cast-in-place construction is adopted, and the specific construction method comprises the following steps:
step 201: according to design requirements, when girder ends of main girders 11 on two sides of a bridge floor are constructed, pre-buried bolts 2 are installed according to the arrangement of connecting holes on a Pi-shaped steel plate 1;
step 202: after the construction of the main beams 1 on the two sides of the bridge deck is finished, pouring a concrete leveling cushion layer 9 at the bottom of the reserved notch 15 of the expansion joint and maintaining to meet the strength requirement;
step 203: a sliding layer 10 is laid on the concrete leveling cushion layer 9, and the pi-shaped steel plate 1 and the embedded bolt 2 are locked and fixed through a nut, so that the pi-shaped steel plate is fixedly connected with the main beam;
step 204: welding and fixing the stressed steel bar 3 and a vertical steel plate at the inner side end of the pi-shaped steel plate 1, binding a longitudinal steel bar 4 on the stressed steel bar 3, and forming a steel bar cage by the stressed steel bar and the longitudinal steel bar;
step 205: pouring concrete on the upper sides of the reinforcement cage and the embedded bolts;
step 206: and (5) after the concrete poured in the step 205 reaches the design strength, constructing a bridge deck pavement layer.
Example three: the structure is used for seamless transformation of an existing bridge, a seam crossing plate adopts a factory prefabrication mode, and the specific construction method comprises the following steps:
step 301: chiseling concrete in expansion joint reserved notches 15 at beam ends of main beams 11 on two sides of an original bridge deck according to design requirements, and chiseling the height of the expansion joint reserved notches 15 to an elevation required by the design requirements;
step 302: drilling a pre-buried bolt hole at the bottom of the reserved slot opening 15 of the expansion joint by using drilling equipment according to the arrangement of the connecting holes on the pi-shaped steel plate 1, installing a pre-buried bolt 2 in the pre-buried bolt hole, and then pouring a concrete leveling cushion layer at the bottom of the reserved slot opening of the expansion joint;
step 303: filling a foaming bar material with the height of 5cm at an expansion joint 12 between main beams 11 at two sides of the bridge deck, and then paving a sliding layer 10 on the concrete leveling cushion layer 9;
step 304: integrally transporting the seam crossing plate prefabricated in a factory to a construction site, hoisting the seam crossing plate by using a crane, aligning and installing the seam crossing plate to a specified position, and locking and fixing the pi-shaped steel plate 1 and the embedded bolt 2 by using a nut to realize the fixed connection of the pi-shaped steel plate and the main beam;
step 305: pouring concrete on the upper side of the embedded bolt 2;
step 306: and after the concrete poured in the step 305 reaches the design strength, constructing a bridge deck pavement layer.
The invention absorbs the rotation and the expansion deformation of the girder ends at two sides by arranging the Pi-shaped steel plates at two ends of the seam crossing plate body, solves the problem of poor durability and use performance of the traditional bridge deck continuous structure in the use process due to the inevitable occurrence of concrete cracking, steel bar corrosion and drainage leakage under the combined action of loads such as automobile live load, temperature change, braking force and the like, has reliable structure and simple construction process, is particularly suitable for the conditions of short length of the reserved groove of the expansion joint and small depth of the reserved groove, has good adaptability to the seamless transformation of the small-span bridge, and is more favorable for promoting the popularization and the application of the bridge deck continuous structure. The method is not only suitable for the design of a newly built bridge, but also suitable for the reconstruction of the existing bridge expansion joint.
If the invention discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a novel seam board structure is striden in succession to bridge floor which characterized in that: the bridge deck is characterized by comprising a joint crossing plate crossing the upper side of an expansion joint between girders on two sides of the bridge deck, wherein the joint crossing plate comprises a joint crossing plate body positioned inside an expansion joint reserved groove opening of the girder ends on the two sides of the bridge deck, the left end and the right end of the joint crossing plate body are respectively and fixedly connected with a pi-shaped steel plate, and the pi-shaped steel plates are fixedly connected with the girders.
2. A novel bridge deck continuous crack spanning plate structure according to claim 1, wherein: the joint-spanning plate body comprises a reinforcement cage and concrete poured inside and outside the reinforcement cage, and the inner side end of the pi-shaped steel plate is fixedly connected with the reinforcement cage.
3. A novel bridge deck continuous crack spanning plate structure according to claim 2, wherein: the reinforcement cage comprises a plurality of rectangular annular stressed reinforcements which are distributed at intervals along the longitudinal direction, the upper end and the lower end of the interior of each stressed reinforcement are provided with a plurality of longitudinal reinforcements which are distributed at intervals along the transverse direction, and the longitudinal reinforcements are bound and fixed with the stressed reinforcements; and the vertical steel plate at the inner side end of the pi-shaped steel plate is welded and fixed with the stressed steel bar.
4. A novel bridge deck continuous crack spanning plate structure according to claim 1, wherein: a plurality of connecting holes are formed in the horizontal steel plate at the bottom of the outer side end of the pi-shaped steel plate at intervals along the longitudinal direction; the bottom of the reserved slot of the expansion joint is pre-embedded with pre-embedded bolts corresponding to the positions of the connecting holes, and the pi-shaped steel plate is in threaded connection with nuts through the pre-embedded bolts penetrating the connecting holes to realize locking and fixing.
5. A novel bridge deck continuous crack spanning plate structure according to claim 4, wherein: and the upper side of the embedded bolt is poured with sealing bolt concrete.
6. A novel bridge deck continuous crack spanning plate structure according to claim 1, wherein: and a concrete leveling cushion layer is laid at the bottom of the reserved slot of the expansion joint, and the joint-spanning plate is positioned on the upper side of the concrete leveling cushion layer.
7. A novel bridge deck continuous crack spanning plate structure according to claim 6, wherein: and a sliding layer is arranged between the concrete leveling cushion layer and the seam crossing plate body, and the sliding layer is positioned between the lower ends of the pi-shaped steel plates at the left end and the right end of the seam crossing plate body.
8. A novel bridge deck continuous crack spanning plate structure according to claim 1, wherein: still including being located the girder and striding the bridge deck pavement layer of seam board upside, the bridge deck pavement layer flushes with the top surface of pi type steel sheet, is equipped with the bridge deck concrete bed course between the top surface of bridge deck pavement layer and girder.
9. A novel bridge deck continuous crack spanning plate structure according to claim 1, wherein: the seam crossing plate is formed by cast-in-place or prefabricated in a factory.
10. A construction method of a novel bridge deck continuous seam crossing plate structure is characterized by comprising the following steps: the novel bridge deck continuous crack spanning plate structure as claimed in any one of claims 1 to 9 is adopted, and the construction method comprises the following steps:
(1) the method comprises the following steps of (1) reforming an existing bridge:
step 101: chiseling concrete in reserved notches of expansion joints of main beam ends on two sides of an original bridge deck according to design requirements, and chiseling the height of the reserved notches of the expansion joints to an elevation required by the design requirements;
step 102: drilling a pre-buried bolt hole at the bottom of the reserved notch of the expansion joint by using drilling equipment according to the arrangement of the connecting holes on the pi-shaped steel plate, installing a pre-buried bolt in the pre-buried bolt hole, and then pouring concrete at the bottom of the reserved notch of the expansion joint to level the cushion layer;
step 103: paving a sliding layer on the concrete leveling cushion layer, and locking and fixing the pi-shaped steel plate and the embedded bolt through nuts to realize the fixed connection of the pi-shaped steel plate and the main beam;
step 104: welding and fixing the stressed steel bar and a vertical steel plate at the inner side end of the pi-shaped steel plate, binding a longitudinal steel bar on the stressed steel bar, and forming a steel bar cage by the stressed steel bar and the longitudinal steel bar;
step 105: pouring concrete on the upper sides of the reinforcement cage and the embedded bolts;
step 106: constructing a bridge deck pavement layer after the concrete poured in the step 105 reaches the design strength;
(2) for newly-built bridges:
step 201: according to design requirements, when girder ends on two sides of a bridge deck are constructed, pre-buried bolts are installed according to the arrangement of connecting holes in the Pi-shaped steel plate;
step 202: after the construction of the girders on the two sides of the bridge floor is finished, pouring concrete leveling cushion layers at the bottoms of the reserved notches of the expansion joints at the girder ends of the girders and meeting the strength requirement;
step 203: paving a sliding layer on the concrete leveling cushion layer, and locking and fixing the pi-shaped steel plate and the embedded bolt through nuts to realize the fixed connection of the pi-shaped steel plate and the main beam;
step 204: welding and fixing the stressed steel bar and a vertical steel plate at the inner side end of the pi-shaped steel plate, binding a longitudinal steel bar on the stressed steel bar, and forming a steel bar cage by the stressed steel bar and the longitudinal steel bar;
step 205: pouring concrete on the upper sides of the reinforcement cage and the embedded bolts;
step 206: and (5) after the concrete poured in the step 205 reaches the design strength, constructing a bridge deck pavement layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110345199.1A CN112900255A (en) | 2021-03-31 | 2021-03-31 | Novel bridge deck continuous seam crossing plate structure and construction method thereof |
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| CN202110345199.1A CN112900255A (en) | 2021-03-31 | 2021-03-31 | Novel bridge deck continuous seam crossing plate structure and construction method thereof |
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| CN112900255A true CN112900255A (en) | 2021-06-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774809A (en) * | 2021-09-30 | 2021-12-10 | 广东深已建设工程有限公司 | Construction method for continuous structure of simply supported beam bridge deck |
| CN114592428A (en) * | 2022-04-21 | 2022-06-07 | 江苏梦联桥科技有限公司 | Low-modulus high-toughness composite material, continuous bridge deck connecting plate member and construction process |
| CN117468503A (en) * | 2023-11-14 | 2024-01-30 | 青岛文德超建筑工程有限公司 | Ultra-long concrete expansion joint-free structure and construction process thereof |
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2021
- 2021-03-31 CN CN202110345199.1A patent/CN112900255A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774809A (en) * | 2021-09-30 | 2021-12-10 | 广东深已建设工程有限公司 | Construction method for continuous structure of simply supported beam bridge deck |
| CN114592428A (en) * | 2022-04-21 | 2022-06-07 | 江苏梦联桥科技有限公司 | Low-modulus high-toughness composite material, continuous bridge deck connecting plate member and construction process |
| CN117468503A (en) * | 2023-11-14 | 2024-01-30 | 青岛文德超建筑工程有限公司 | Ultra-long concrete expansion joint-free structure and construction process thereof |
| CN117468503B (en) * | 2023-11-14 | 2024-03-19 | 青岛文德超建筑工程有限公司 | Ultra-long concrete expansion joint-free structure and construction process thereof |
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