CN119465775A - Steel-UHPC composite bridge deck based on composite tenon connector and its construction method - Google Patents
Steel-UHPC composite bridge deck based on composite tenon connector and its construction method Download PDFInfo
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- CN119465775A CN119465775A CN202411523297.XA CN202411523297A CN119465775A CN 119465775 A CN119465775 A CN 119465775A CN 202411523297 A CN202411523297 A CN 202411523297A CN 119465775 A CN119465775 A CN 119465775A
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for 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
- E01D19/00—Structural or constructional details of 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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a steel-UHPC combined bridge deck based on a combined tenon connecting piece and a construction method thereof, wherein the steel-UHPC combined bridge deck comprises a steel bridge deck plate, a steel tenon plate, a reinforcing steel bar net and a UHPC thin layer; the steel bridge deck plate is vertically fixed to the top surface of the steel bridge deck plate, the top of the steel bridge deck plate is provided with a tenon-shaped unit protruding upwards, the steel bar net is covered above the steel bridge deck plate, the tenon-shaped units are inserted into grids of the steel bar net and are mutually fixed, and UHPC concrete is poured on the steel bridge deck plate, the steel bridge deck plate and the steel bar net to form a UHPC thin layer. The novel combined tenon connecting piece is applied, the limit requirement of the UHPC thin layer on the height of the connecting piece can be met, the shearing strength, the pulling strength and the rigidity are larger, the connecting piece is fewer, the single piece is fewer, the welding spots are fewer, the deformation capability in the UHPC is stronger, the tight combination of the steel bridge deck and the UHPC is ensured, and the long-term use performance is better.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a steel-UHPC combined bridge deck based on combined tenon connectors and a construction method thereof.
Background
The orthotropic steel deck plate becomes a main deck form of the large-span bridge by virtue of the advantages of light weight, convenient construction, high bearing capacity and the like. However, in order to meet the increasing heavy traffic demand, due to the problems of small local rigidity, complex detailed structure, poor welding quality, poor fatigue performance of U-rib unilateral fillet weld, concentrated stress at the diaphragm through holes, low bonding strength between the steel bridge deck and pavement, and the like, fatigue cracks and pavement layer breakage easily occur during the operation of the orthotropic steel bridge deck, and the fatigue cracks mainly occur at the connection position of the top plate and the U-rib and the connection position of the U-rib and the diaphragm (accounting for more than 90% of the total number of cracks).
In order to solve the above problems, an improved orthotropic steel-UHPC composite bridge deck is proposed in the industry, that is, a stud is welded on top of an orthotropic steel bridge deck plate to combine with a ultra-high performance concrete (UHPC) thin layer to form a stud connector U-rib light composite bridge deck. Compared with the traditional orthotropic steel bridge deck, the lightweight combined bridge deck has the advantages of being light in weight, high in strength and good in durability due to the fact that UHPC is beneficial, the local rigidity of the bridge deck is greatly improved on the basis of maintaining dead weight and cost, fatigue stress at the connecting position of the top plate and the U rib is reduced, and the fatigue life of the bridge is remarkably prolonged. In addition, UHPC is used as a cement-based material, has high bonding strength with the bridge deck pavement layer, effectively reduces frequent damage of the pavement layer under the coupling actions of heavy load, high temperature, rainwater and the like, and reduces the repairing cost of bridge deck pavement. At present, the U-rib light combined bridge deck of the pin connector is applied to a large scale in a large-span bridge.
However, although the pin connector U-rib light combined bridge deck avoids fatigue cracking and pavement layer damage of the connection position of the top plate and the U-rib to a large extent, in practical application, the following defects still exist that firstly, even if the U-rib welding process is optimized, the welding seam quality still cannot be effectively improved, and the problem of eccentric welding seam is difficult to solve. Secondly, the fatigue stress of the connection position of the bridge deck and the U rib is reduced, but the fatigue performance of other positions such as the cross slab through holes is slightly improved, and the fatigue problem of the positions is not effectively controlled. Thirdly, because the UHPC thin layer limits the height of the connecting piece, the bridge deck mostly uses small-size pegs as the connecting piece, and the small-size pegs have lower shearing resistance, pulling resistance and rigidity, so that the pegs are required to be densely arranged to ensure the tight combination of steel and UHPC, and the on-site welding workload is large, the difficulty is high, the construction efficiency is low, the UHPC pouring quality is poor, and the labor cost is high. Finally, the small-size peg is influenced by temperature change and load circulation in the long-term use process, and the pulling resistance and the shear rigidity reduction possibly occur, so that the interface between the steel bridge deck and the UHPC is relatively slipped and debonded, and the overall structural performance is further influenced.
Therefore, there is a need to propose new measures to overcome the above drawbacks.
Disclosure of Invention
The invention aims to provide a steel-UHPC combined bridge deck based on combined tenon connectors and a construction method thereof, so as to solve the problems in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A steel-UHPC combined bridge deck based on a combined tenon connector, wherein the steel-UHPC combined bridge deck comprises a steel bridge deck plate, a steel tenon plate, a reinforcing steel bar net and a UHPC thin layer;
The steel tenon plate is vertically fixed to the top surface of the steel bridge deck, and the top of the steel tenon plate is provided with a tenon-shaped unit protruding upwards;
the steel bar meshes are covered above the steel bridge deck, and the tenon-shaped units are inserted into the grids of the steel bar meshes and fixed with each other;
And pouring UHPC concrete on the steel bridge deck plate, the steel tenon plate and the steel bar net to form the UHPC thin layer.
Further, the steel tenon plates are longitudinally arranged on the top surface of the steel bridge deck, and a plurality of steel tenon plates are transversely and parallelly arranged.
Further, the tenon-shaped units are longitudinally and uniformly arranged at the top of the steel tenon plate, the top is an expansion end, and the lower part is a contraction section;
And special-shaped grooves are formed between adjacent tenon-shaped units.
Further, a plate rib is provided below the steel deck plate, and the plate rib is vertically fixed to the bottom of the steel deck plate.
Further, the slab ribs are longitudinally arranged at the bottom of the steel bridge deck and are transversely and parallelly arranged in plurality;
The plate ribs are vertically corresponding to the positions of the steel tenon plates.
Further, a diaphragm plate is arranged below the steel bridge deck plate, a vertical slot is formed in the top of the diaphragm plate, and the plate rib is inserted into the slot downwards.
Further, the transverse partition plates are transversely arranged and longitudinally arranged in parallel.
Further, the bottom of the slot is provided with a special-shaped hole, and two sides of the slot at the top of the special-shaped hole are provided with upper extension parts.
In another aspect, there is provided a method of constructing a steel-UHPC composite deck based on a composite tongue joint as described, the method comprising:
the bottom surface of the steel bridge deck plate faces upwards, and a fixed plate rib is welded at the bottom of the steel bridge deck plate;
Aligning the slots of the diaphragm plates with the plate ribs, so that the plate ribs are inserted into the diaphragm plates, and continuously welding the diaphragm plates, the plate ribs and the steel bridge deck;
the top surface of the steel bridge deck plate faces upwards, and a steel tenon plate is welded and fixed at the top of the steel bridge deck plate, so that a tenon-shaped unit faces upwards;
Paving a steel bar mesh above the steel tenon plate, and enabling tenon-shaped units to be inserted into grids of the steel bar mesh;
and casting UHPC concrete on the steel bridge deck plate, the steel tenon plate and the steel bar net to form the UHPC thin layer.
Further, UHPC concrete filled in the special-shaped grooves of the steel tenon plates forms concrete tenons, and the tenon-shaped units, the concrete tenons and transverse steel bars of the steel bar meshes jointly form a combined tenon connecting piece for resisting interface shearing force.
Compared with the prior art, the invention has the following beneficial effects:
The invention provides a steel-UHPC combined bridge deck based on a combined tenon connecting piece and a construction method thereof, wherein the rigidity of the bridge deck is greatly increased by utilizing UHPC, redundant longitudinal closed U ribs are optimized into longitudinal open plate ribs, the plate ribs are lower in manufacturing difficulty than the U ribs, and double-sided fillet weld is adopted for welding with a steel bridge deck, so that the welding process is simplified, the eccentric weld is avoided, the welding quality and efficiency are greatly improved, and the stress concentration of the weld is reduced. In addition, compared with the small-size peg connecting piece of the traditional light combined bridge deck, the novel combined tenon connecting piece can also meet the limit requirement of the UHPC thin layer on the height of the connecting piece, and has the advantages of higher shearing resistance, pulling resistance and rigidity, stronger deformability in UHPC, ensuring the tight combination of a steel bridge deck and the UHPC, and better long-term use performance.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other embodiments of the drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic three-dimensional structure of the present invention.
Fig. 2 is a schematic diagram of the front structure of the present invention.
Fig. 3 is a schematic side view of the present invention.
Fig. 4 is a schematic view of the tenon-shaped unit shape of the steel tenons.
Fig. 5 is a schematic view of the profiled hole shape of the diaphragm.
Fig. 6 is a schematic diagram of the laying relationship of the transverse and longitudinal bars.
The marks in the figure are as follows:
1-UHPC thin layers, 2-steel bridge decks, 3-steel tenons, 4-steel reinforcement meshes, 5-plate ribs and 6-diaphragm plates;
31-tenon-shaped units, 32-expanded ends, 33-contracted sections and 34-special-shaped grooves;
41-transverse steel bars and 42-longitudinal steel bars;
61-special-shaped holes, 62-upper extension parts and 63-slots.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In the description of the present invention, it should be understood that the terms "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "longitudinal," "transverse," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "fixed," "connected," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It should also be noted that although the order of steps is referred to in the method description, in some cases it may be performed in a different order than here, and should not be construed as limiting the order of steps.
In the specific embodiment, the longitudinal direction of the plate rib 5 is defined as the longitudinal direction, and the direction perpendicular thereto is defined as the transverse direction.
The invention provides a steel-UHPC combined bridge deck based on a combined tenon connecting piece, which adopts a novel steel-concrete combined tenon as a shear connecting piece, adopts a plate rib 5 as a longitudinal stiffening rib and adopts a bridge deck structural form of a large-span bridge, so that the aims of reducing welding operation, improving fatigue performance, reducing the number of connecting pieces and improving long-term working performance of the connecting pieces can be achieved, and a more advanced, more economical and more durable bridge deck structural design and construction scheme are provided for the large-span bridge.
Specifically, as shown in fig. 1-3, the steel-UHPC combined bridge deck comprises a steel bridge deck plate 2, a steel tenon plate 3, a reinforcing steel mesh 4, a UHPC thin layer 1, plate ribs 5 and a diaphragm plate 6, so that a novel orthotropic light combined bridge deck is formed, and the integral optimization and upgrading of the structure are realized.
The steel tongue plate 3 is vertically fixed to the top surface of the steel bridge deck 2, and the top of the steel tongue plate 3 has a tongue-shaped element 31 protruding upward. The steel tongue plate 3 is longitudinally arranged on the top surface of the steel bridge deck 2 and a plurality of steel tongue plates are transversely arranged in parallel. The tenon-shaped units 31 are uniformly distributed at equal intervals longitudinally on the top of the steel tenon plate 3, the top is an enlarged end 32, and the lower part is a contracted section 33. Between adjacent tenon-shaped units 31 are profiled grooves 34. In some embodiments, the tenon-shaped unit 31 may take the shape shown in fig. 4, and the tenon-shaped unit 31 is symmetrical in shape by transitioning from a straight line section on the left side to a semicircular curve section concaved back to the right on the left side of the contraction section 33, then transitioning upwards to a semicircular curve section concaved to the left on the left side of the expansion end 32, and then transitioning to a straight line section on the top. Correspondingly, the special-shaped groove 34 is downwards transited from the semicircular curve section protruding from the right side of the enlarged end 32 to the semicircular curve section concaved back to the left from the right side of the contracted section 33, and then transited to the straight line section of the groove bottom, and the left part and the right part of the special-shaped groove 34 are symmetrical in shape. The edges of the tenon-shaped units 31 and the special-shaped grooves 34 are in smooth transition in the longitudinal direction, and compared with shear nails arranged in a welding array, the shear nails have fewer welding spots and fewer components, so that the construction efficiency is improved, and meanwhile, the long-term working performance is also effectively improved.
The reinforcing mesh 4 is covered over the steel bridge deck 2, and the tenon-shaped units 31 are inserted into the mesh of the reinforcing mesh 4 and fixed to each other. The reinforcing mesh 4 comprises transverse reinforcing bars 41 and longitudinal reinforcing bars 42 which are mutually bound to form a reinforcing framework.
The slab ribs 5 are vertically fixed to the bottom of the steel deck plate 2. The plate ribs 5 are longitudinally arranged at the bottom of the steel bridge deck 2 and are transversely arranged in parallel in plurality, and the plate ribs 5 correspond to the positions of the steel tenon plates 3 up and down. The plate rib 5 can be replaced by an opening stiffening rib such as a flat-bulb steel rib, a positive flat-bulb steel rib and the like.
The diaphragm plate 6 is arranged below the steel bridge deck plate 2, a vertical slot 63 is arranged at the top of the diaphragm plate 6, and the plate rib 5 is inserted into the slot 63 downwards. The diaphragm 6 is arranged laterally and a plurality of longitudinally parallel. The bottom of the slot 63 is provided with a special-shaped hole 61, and the two sides of the slot 63 at the top of the special-shaped hole 61 are provided with upper extension parts 62. By adopting the special-shaped hole digging mode, the stress level of the diaphragm plate 6 and the structural details of the holes of the diaphragm plate is reduced, and the fatigue stress performance of the diaphragm plate is improved.
UHPC concrete is poured on the steel bridge deck 2, the steel tenon board 3 and the steel bar net 4 to form a UHPC thin layer 1. The UHPC concrete filled in the profiled groove 34 of the steel tongue plate 3 forms a concrete tongue, and the tongue-shaped elements 31, the concrete tongue and the transverse rebars 41 of the reinforcing mesh 4 together form a combined tongue connection against interfacial shear. The combined tenon connecting piece is in a PZ shape, and CL shape and MCL can be adopted to replace the UHPC thin layer with sufficient thickness.
The UHPC and orthotropic steel bridge deck are combined to form an orthotropic light combined bridge deck, the local rigidity of the bridge deck can be improved by more than 30 times, the stiffening effect of the U ribs on the bridge deck is weakened, the U ribs can be used for replacing the bridge deck, further, the special-shaped holes of the diaphragm plates can reduce the stress level of the diaphragm plates and the structural details of the holes of the diaphragm plates, the fatigue stress performance of the diaphragm plates is improved, the novel combined tenon connecting piece can meet the height limiting requirement of a UHPC thin layer, compared with a small-size bolt, the UHPC thin-layer connecting piece has higher shearing resistance, pulling resistance and rigidity, the deformation capability in the UHPC is higher, the long-term use performance is better, the number of connecting pieces and the welding workload can be greatly reduced, the steel bridge deck and the UHPC are tightly combined, and the comprehensive stress performance of the bridge deck is remarkably improved.
The construction method of the steel-UHPC combined bridge deck based on the combined tenon connecting piece specifically comprises the following steps:
Firstly, based on the design requirement of a light combined bridge deck, blanking of a steel bridge deck 2, a steel tenon plate 3, a reinforcing mesh 4, plate ribs 5 and a diaphragm plate 6 is required, wherein the steel bridge deck 2 and the plate ribs 5 are directly rolled and formed according to the design size, and the steel tenon 3 and the diaphragm plate 6 are required to be respectively rolled with prototype steel plates and then cut into corresponding shapes.
S1, the bottom surface of the steel bridge deck plate 2 faces upwards, and a fixed plate rib 5 is welded at the bottom of the steel bridge deck plate 2, wherein a double-sided fillet welding mode can be adopted.
S2, aligning the slots 63 of the diaphragm plate 6 with the plate ribs 5, inserting the plate ribs 5 into the diaphragm plate 6, continuously welding the diaphragm plate 6, the plate ribs 5 and the steel bridge deck plate 2, and closely compacting the welding at the corners.
S3, the top surface of the steel bridge deck plate 2 is upwards, the steel tenon plate 3 is lofted according to design requirements, the corresponding position of the top surface of the steel bridge deck plate 2 is polished, the surface of the steel plate is smooth, the steel tenon plate 3 is welded and fixed at the top of the steel bridge deck plate 2, and the tenon-shaped units 31 are upwards.
And S4, paving the steel bar net 4 above the steel tenon plate 3, and inserting the tenon-shaped units 31 into grids of the steel bar net 4.
Specifically, transverse steel bars 41 are placed on the notches of the special-shaped grooves 34, longitudinal steel bars 42 are paved on the tops of the transverse steel bars 41 and bound to form a steel bar framework, the distance between the longitudinal steel bars 42 is kept consistent with the distance between the transverse steel bars 41, and the implementation method that steel bar meshes are formed by binding first and then paved on the notches of the steel tenon plates 3 can be adopted.
And S5, pouring UHPC concrete on the steel bridge deck plate 2, the steel tenon plate 3 and the steel bar net 4 to form a UHPC thin layer 1.
The notch filled in the steel tenon plate 3 forms a concrete tenon, the steel tenon plate 3, the concrete tenon and the transverse steel bars 41 jointly form a novel combined tenon connecting piece for resisting interface shearing force, the steel bridge deck 2 and the UHPC thin layer 1 are tightly combined, the UHPC thin layer 1 is maintained after being poured, and the steel-UHPC combined bridge deck manufacturing adopting the combined tenon connecting piece is completed.
The technical scheme of the invention has the following technical advantages:
1. the invention optimizes the redundant longitudinal closed U-shaped rib into the longitudinal opening plate rib by utilizing the advantage of greatly increasing the rigidity of the bridge deck by utilizing UHPC, has lower manufacturing difficulty than the U-shaped rib, and adopts double-sided fillet weld welding with the steel bridge deck, thereby simplifying the welding process, avoiding the eccentric welding, greatly improving the welding quality and efficiency and reducing the stress concentration of the welding seam.
2. The invention improves the diaphragm plate hole digging mode, can accurately dig holes on the diaphragm plate web plate by using Computer Numerical Control (CNC), and can be used as a template to help to position the plate rib and realize the matching, thereby reducing the quality control difficulty and the manufacturing cost of the diaphragm plate.
3. The invention adopts the special-shaped mode to dig holes, reduces the stress level of the diaphragm plate and the structural details of the holes of the diaphragm plate, improves the fatigue performance of the diaphragm plate at the positions of the holes, and comprehensively prolongs the fatigue life of the bridge deck structure.
4. Compared with the small-size peg connecting piece of the traditional light combined bridge deck, the novel combined tenon connecting piece can also meet the limit requirement of the UHPC thin layer on the height of the connecting piece, and has the advantages of higher shearing resistance, higher pulling resistance and higher rigidity, stronger deformability in UHPC, ensuring the tight combination of a steel bridge deck and the UHPC, and better long-term use performance.
5. The steel tenons are arranged correspondingly only at the positions of the plate ribs, the number of connecting pieces is greatly reduced, steel tenons manufactured in advance are continuously welded at the top of the steel bridge deck, a laying base is provided for a steel reinforcement framework, a UHPC thin layer is poured to form a novel combined tenon connecting piece, the construction flow is simplified, the process is simple, and the construction quality and efficiency are remarkably improved.
The foregoing description of the invention has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the invention pertains, based on the idea of the invention.
Claims (10)
1. Steel-UHPC combination bridge floor based on combination tenon connecting piece, its characterized in that:
The steel-UHPC combined bridge deck comprises a steel bridge deck plate (2), a steel tenon plate (3), a reinforcing steel bar net (4) and a UHPC thin layer (1);
the steel tenon plate (3) is vertically fixed to the top surface of the steel bridge deck (2), and the top of the steel tenon plate (3) is provided with a tenon-shaped unit (31) protruding upwards;
the steel reinforcement mesh (4) is covered above the steel bridge deck (2), and the tenon-shaped units (31) are inserted into the grids of the steel reinforcement mesh (4) and fixed with each other;
and casting UHPC concrete on the steel bridge deck plate (2), the steel tenon plate (3) and the steel bar net (4) to form the UHPC thin layer (1).
2. The steel-UHPC composite deck based on composite tenon joints according to claim 1, characterized in that:
the steel tenon plates (3) are longitudinally arranged on the top surface of the steel bridge deck plate (2) and are transversely and parallelly arranged in a plurality of mode.
3. The steel-UHPC composite deck based on composite tenon joints according to claim 2, characterized in that:
The tenon-shaped units (31) are longitudinally and uniformly arranged at the top of the steel tenon plate (3), the top is an expansion end (32), and the lower part is a contraction section (33);
A special-shaped groove (34) is arranged between the adjacent tenon-shaped units (31).
4. A steel-UHPC composite deck based on composite tenon joints according to claim 3, characterized in that:
a plate rib (5) is arranged below the steel bridge deck (2), and the plate rib (5) is vertically fixed to the bottom of the steel bridge deck (2).
5. The steel-UHPC composite deck based on composite tenon joints according to claim 4, characterized in that:
The slab ribs (5) are longitudinally arranged at the bottom of the steel bridge deck (2) and are transversely and parallelly arranged in a plurality of ways;
The plate ribs (5) vertically correspond to the positions of the steel tenon plates (3).
6. The steel-UHPC composite deck based on composite tenon joints according to claim 5, characterized in that:
The steel bridge deck plate (2) is provided with diaphragm plate (6) below, the top of diaphragm plate (6) is provided with vertical slot (63), board rib (5) down insert slot (63).
7. The steel-UHPC composite deck based on composite tenon joints according to claim 6, characterized in that:
the diaphragm plates (6) are transversely arranged and longitudinally and parallelly arranged in a plurality.
8. The steel-UHPC composite deck based on composite tenon joints according to claim 7, characterized in that:
the bottom of the slot (63) is provided with a special-shaped hole (61), and the two sides of the slot (63) at the top of the special-shaped hole (61) are provided with upper extension parts (62).
9. The construction method of the steel-UHPC combined bridge deck based on the combined tenon connecting piece as claimed in claim 8, wherein the construction method comprises the following steps:
The method comprises the following steps:
the bottom surface of the steel bridge deck plate (2) faces upwards, and a fixed plate rib (5) is welded at the bottom of the steel bridge deck plate (2);
Aligning the slots (63) of the diaphragm plate (6) with the plate ribs (5), so that the plate ribs (5) are inserted into the diaphragm plate (6), and continuously welding the diaphragm plate (6), the plate ribs (5) and the steel bridge deck (2);
The top surface of the steel bridge deck plate (2) faces upwards, and a steel tenon plate (3) is welded and fixed at the top of the steel bridge deck plate (2), so that a tenon-shaped unit (31) faces upwards;
paving the reinforcement mesh (4) above the steel tenon plate (3), and enabling the tenon-shaped units (31) to be inserted into the grids of the reinforcement mesh (4);
And casting UHPC concrete on the steel bridge deck plate (2), the steel tenon plate (3) and the steel bar net (4) to form the UHPC thin layer (1).
10. The construction method of the steel-UHPC combined bridge deck based on the combined tenon connecting piece, which is characterized by comprising the following steps of:
UHPC concrete filled in the special-shaped groove (34) of the steel tenon plate (3) forms a concrete tenon, and the tenon-shaped unit (31), the concrete tenon and transverse steel bars (41) of the steel bar mesh (4) jointly form a combined tenon connecting piece resisting interface shearing force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411523297.XA CN119465775A (en) | 2024-10-30 | 2024-10-30 | Steel-UHPC composite bridge deck based on composite tenon connector and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411523297.XA CN119465775A (en) | 2024-10-30 | 2024-10-30 | Steel-UHPC composite bridge deck based on composite tenon connector and its construction method |
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| CN119465775A true CN119465775A (en) | 2025-02-18 |
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| CN112160241A (en) * | 2020-10-29 | 2021-01-01 | 西南交通大学 | An orthotropic steel bridge deck fatigue reinforcement structure and its construction method |
| CN112554054A (en) * | 2020-12-25 | 2021-03-26 | 中铁大桥科学研究院有限公司 | Combined bridge deck structure of large-span bridge and construction method thereof |
| CN114197305A (en) * | 2021-08-30 | 2022-03-18 | 广西大学 | Novel RFB structure glued UHPC-steel bridge face structure |
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2024
- 2024-10-30 CN CN202411523297.XA patent/CN119465775A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050115195A1 (en) * | 2003-12-01 | 2005-06-02 | D. S. Brown Co. | Prestressed or post-tension composite structural system |
| CN202170572U (en) * | 2011-07-04 | 2012-03-21 | 浙江省交通规划设计研究院 | Steel and concrete shear connector structure |
| CN203613459U (en) * | 2013-12-03 | 2014-05-28 | 邵旭东 | Light combined bridge floor structure with longitudinal open stiffening ribs |
| CN206385460U (en) * | 2016-12-30 | 2017-08-08 | 西南交通大学 | Combined floorings |
| CN112160241A (en) * | 2020-10-29 | 2021-01-01 | 西南交通大学 | An orthotropic steel bridge deck fatigue reinforcement structure and its construction method |
| CN112554054A (en) * | 2020-12-25 | 2021-03-26 | 中铁大桥科学研究院有限公司 | Combined bridge deck structure of large-span bridge and construction method thereof |
| CN114197305A (en) * | 2021-08-30 | 2022-03-18 | 广西大学 | Novel RFB structure glued UHPC-steel bridge face structure |
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