CN217948777U - Assembled steel-concrete combined bridge deck structure - Google Patents
Assembled steel-concrete combined bridge deck structure Download PDFInfo
- Publication number
- CN217948777U CN217948777U CN202221874093.7U CN202221874093U CN217948777U CN 217948777 U CN217948777 U CN 217948777U CN 202221874093 U CN202221874093 U CN 202221874093U CN 217948777 U CN217948777 U CN 217948777U
- Authority
- CN
- China
- Prior art keywords
- steel
- hole
- concrete
- bridge deck
- shaped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The application relates to an assembly type steel-concrete combined bridge deck structure, which comprises a steel top plate, U-shaped longitudinal ribs, an upper transverse clapboard, a lower transverse clapboard, a steel bar mesh structure arranged on the steel top plate and a concrete structure layer connected with the steel top plate through a connecting piece, wherein the upper transverse clapboard is arranged on the steel top plate; a double-sided fillet weld is arranged at the joint of the U-shaped longitudinal rib and the steel top plate; the upper transverse partition plate is provided with a trapezoidal through hole and a U-shaped through hole, the bottom of the trapezoidal through hole is connected with the top of the U-shaped through hole, two ends of the U-shaped through hole are semi-circular arcs, and the radius of each semi-circular arc is larger than the distance from the bottom edge of the U-shaped through hole to the bottom edge of the trapezoidal through hole. The utility model discloses adopt the double-sided fillet welding design at the typical tired vulnerable position of steel bridge deck to setting up novel trompil at vertical rib and cross slab intersection position, introducing the concrete structure layer simultaneously, and forming in coordination the atress system through shear connector, solving among the prior art orthotropic steel bridge deck structure typical structure detail fatigue fracture frequently and bridge deck pavement and damaging two kinds of disease problems.
Description
Technical Field
The application relates to the technical field of bridge building structures, in particular to an assembly type steel-concrete combined bridge deck structure.
Background
The orthotropic steel bridge deck has the outstanding advantages of light dead weight, high bearing capacity, wide applicability, convenient construction and the like, and is widely applied to modern large-span and ultra-large-span steel structure bridges, landscape bridges and urban bridges. However, due to the common influence of a structural system and a plurality of factors such as stress characteristics, welding defects, residual stress, assembly errors, service load and the like, the steel bridge deck slab structure is frequently cracked, the bridge deck pavement damage cases are frequently generated, the typical characteristics of universality, early occurrence, multiple occurrence and reproducibility are presented, the service safety and the service life of the bridge structure are seriously influenced, and the steel bridge deck slab structure becomes a key technical problem which hinders the application and development of the steel bridge structure. The stress concentration problem under the action of local wheel load of the random traffic vehicle and the secondary stress problem caused by the out-of-plane deformation of the bridge deck slab are fundamental factors causing the fatigue cracking of the orthotropic steel bridge deck slab, and the main reasons causing the poor durability and even damage of the bridge deck pavement layer are that the local rigidity of the steel bridge deck slab is insufficient and the service environment is severe.
With the development of novel manufacturing and welding processes of a steel bridge deck, novel construction details of longitudinal ribs and a top plate and novel hole forming forms of cross positions of the longitudinal ribs and a transverse clapboard are gradually proposed, and the novel hole forming forms are popularized and applied to the existing orthotropic steel bridge deck structure; aiming at the problem of the bridge deck pavement layer, a fiber reinforced concrete structure layer is introduced to improve the stress characteristic of the pavement layer. However, in the traditional steel bridge deck structure, only a novel structural detail or a fiber reinforced concrete structure layer is adopted, and the fatigue cracking of the bridge deck and the damage condition of a pavement layer can be improved to a certain extent. The steel bridge deck slab usually has a plurality of typical fatigue vulnerable details, the fatigue cracking of any detail can shorten the service life of the steel bridge deck slab, and the fatigue cracking and the bridge deck pavement damage mutually influence each other, so that the service life of the steel bridge deck slab is further shortened.
Disclosure of Invention
An object of the utility model is to provide an assembled steel-concrete combination bridge floor slab structure adopts the double faced angle welding seam design at the easy damage position of steel bridge deck slab typical fatigue to set up novel trompil at vertical rib and cross slab intersection position, introduce super high performance fibre reinforced concrete structure layer simultaneously, and combine together both through the shear force connecting piece and form atress system in coordination, solve among the prior art orthotropic steel bridge deck slab structure typical structure detail fatigue fracture frequently and bridge deck pavement damage two kinds of disease problems.
The utility model adopts the technical proposal that: an assembled steel-concrete combined bridge deck slab structure comprises a steel-concrete combined bridge deck slab and a lower supporting structure connected with the steel-concrete combined bridge deck slab, wherein the steel-concrete combined bridge deck slab comprises a steel top plate, U-shaped longitudinal ribs, an upper transverse clapboard, a steel bar net structure arranged on the steel top plate and a concrete structure layer which is poured on the steel top plate and the steel bar net structure and is connected with the steel top plate through a connecting piece; the lower support structure includes a lower diaphragm; the upper transverse clapboard is connected with the lower transverse clapboard, the upper transverse clapboard is arranged at two ends of the steel top plate, and the upper transverse clapboard is provided with a trapezoidal through hole and a U-shaped through hole; the bottom of the trapezoidal through hole is connected with the top of the U-shaped through hole, and the shape of the trapezoidal through hole is consistent with the outer contour of the U-shaped longitudinal rib; the two ends of the U-shaped through hole are semi-circular arcs, and the radius of the semi-circular arcs is larger than the distance from the bottom edge of the U-shaped through hole to the bottom edge of the trapezoidal through hole; the U-shaped longitudinal rib penetrates through the trapezoidal through holes in the transverse partition plates at the upper parts of the two ends and is connected with the steel top plate, and a double-sided fillet weld is arranged at the joint of the U-shaped longitudinal rib and the steel top plate.
Furthermore, the U-shaped through hole is of a bilateral symmetry structure, and the semicircular arc is tangent to the side edge of the trapezoidal through hole.
Further, the radius of the semicircular arc is 20-40mm.
Furthermore, the distance from the bottom edge of the U-shaped through hole to the bottom edge of the trapezoidal through hole is 10 to 12mm.
Further, the bottom end of the upper diaphragm plate and the top end of the lower diaphragm plate are respectively provided with a lower flange plate and an upper flange plate; the lower flange plate and the upper flange plate are connected through a connecting piece.
Further, the concrete structure layer is an ultra-high performance fiber reinforced cement-based material structure layer, is made of an ECC (error correction code) concrete layer, an RPC (remote control concrete) concrete layer or an STC (concrete control time) concrete layer, and has a thickness of 60 to 85mm.
Further, the mesh reinforcement structure includes transverse reinforcing bars and longitudinal reinforcing bars connected to each other.
Further, the thickness of the lower flange plate and the upper flange plate is 12-16mm, and the width of the lower flange plate and the upper flange plate is 200mm.
Further, the lower flange plate and the upper flange plate are connected through a high-strength bolt, the height of the high-strength bolt is 35-40mm, and the diameter of the high-strength bolt is 10-16mm.
Furthermore, the connecting piece for connecting the concrete structure layer and the steel top plate is a stud.
The beneficial effects of the utility model reside in that:
(1) The U-shaped longitudinal rib and steel roof plate junction is provided with the double-sided fillet weld structure and adopts partial penetration welding or full penetration welding, compare in the orthotropic steel bridge panel of tradition longitudinal rib and steel roof plate carry out welded connection through the single-sided fillet weld, the utility model discloses can effectively eradicate "class crackle" structure at the root of weld position, reduce the welding process and carry out various initial welding defects at the root of weld position introduction to reduce the fatigue stress amplitude of welding details, improve the fatigue resistance of U-shaped longitudinal rib and steel roof plate welding details;
(2) The shear resistant connecting pieces, namely the studs, are arranged between the steel top plate and the concrete structural layer to form a structural system stressed cooperatively, so that the thickness and the dead weight of the concrete structural layer can be further reduced, the requirements on required rigidity and durability are met, and the light weight and the high strength of the structural system can be realized;
(3) Compared with the cross structure details of the U-shaped longitudinal rib and the upper transverse clapboard in the traditional orthotropic steel bridge deck structure, the utility model discloses a trapezoidal through hole and U-shaped through hole can obviously improve the local stress characteristic of the cross structure details of the U-shaped longitudinal rib and the upper transverse clapboard under the wheel load effect and reduce the fatigue stress amplitude, and the upper transverse clapboard reserves a broadside with a certain length at the end position of the U-shaped longitudinal rib, and the U-shaped longitudinal rib and the upper transverse clapboard are smoothly transited by polishing, so that the stress concentration effect of the cross position of the U-shaped longitudinal rib and the upper transverse clapboard can be greatly reduced, the force transmission path of the welding seam between the U-shaped longitudinal rib and the upper transverse clapboard is better, thereby obviously improving the purpose of the fatigue strength of the structure details, and prolonging the service fatigue life of the U-shaped longitudinal rib and the upper transverse clapboard;
(4) The concrete structure layer is an ultrahigh-performance fiber-reinforced cement-based material structure layer, has the outstanding advantages of high tensile strength and compressive strength, good ductility and durability and the like, can obviously reduce the thickness of the bridge deck structure layer, and has wide applicability; by introducing the ultra-high performance fiber reinforced concrete structure layer into the combined bridge deck slab, the combined bridge deck slab can be stressed cooperatively with the steel bridge deck slab, and the mechanical characteristics of high tensile strength of the steel bridge deck slab and high compressive strength of the ultra-high performance fiber reinforced concrete are fully exerted; compared with the traditional steel bridge deck pavement material, the ultrahigh-performance fiber reinforced concrete has higher elastic modulus, is used as the lower layer of a pavement layer and forms a whole with the steel top plate through the stud shear key, obviously increases the rigidity of the steel top plate, greatly reduces the fatigue cracking problem of the steel bridge deck plate caused by the prominent local stress concentration effect under the action of wheel load, and ensures that the combined bridge deck plate has good fatigue performance;
(5) The steel-concrete combined bridge deck structure and the lower supporting structure can be respectively prefabricated in sections in a prefabricated field, and the steel-concrete combined bridge deck structure and the lower supporting structure can be assembled through a lower flange plate and a high-strength bolt which are arranged at the bottom end of an upper diaphragm plate when the steel-concrete combined bridge deck structure and the lower supporting structure are erected on site; all manufacturing procedures of the upper steel-concrete combined bridge deck and the lower supporting structure can be completed in a factory, the upper steel-concrete combined bridge deck and the lower supporting structure are transported to a site and assembled through high-strength bolt connection, and the assembly production efficiency can be remarkably improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a cross-sectional view of an embodiment of the present invention;
fig. 3 is an elevation view of an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion A of FIG. 2;
FIG. 5 is a detailed view of the cross structure of the U-shaped longitudinal ribs and the upper diaphragm plate according to the embodiment of the present invention;
FIG. 6 is a detailed view of the cross structure of the U-shaped longitudinal ribs and the upper diaphragm of the conventional steel bridge deck.
The reference signs explain: 1-a steel top plate, 2-U-shaped longitudinal ribs, 3-an upper transverse partition plate, 4-a lower transverse partition plate, 5-high-strength bolts, 6-studs, 7-a steel bar mesh structure, 8-a concrete structure layer, 9-double-sided fillet welds, 30-trapezoidal through holes, 31-U-shaped through holes, 32-a lower flange plate and 41-an upper flange plate.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1 to 5, an assembly type steel-concrete composite bridge deck structure comprises a steel-concrete composite bridge deck and a lower support structure connected with the steel-concrete composite bridge deck, wherein the steel-concrete composite bridge deck and the lower support structure can be simultaneously prefabricated in a prefabricated field in a segmented manner, and are transported to the site to be assembled through high-strength bolts 5, so that the construction time of a bridge can be remarkably shortened, and the assembly production efficiency can be improved.
The steel-concrete combined bridge deck comprises a steel top plate 1, U-shaped longitudinal ribs, an upper diaphragm plate 3, a reinforcing mesh structure 7 arranged on the steel top plate 1 and a concrete structure layer 8 which is poured on the steel top plate 1 and the reinforcing mesh structure 7 and is connected with the steel top plate 1 through a connecting piece; the lower support structure comprises a lower diaphragm 4, the upper diaphragm 3 being connected to the lower diaphragm 4. In the embodiment of the present invention, the mesh reinforcement structure 7 includes a transverse reinforcement and a longitudinal reinforcement connected to each other; the bottom end of the upper diaphragm plate 3 and the top end of the lower diaphragm plate 4 are respectively provided with a lower flange plate 32 and an upper flange plate 41; the thickness of the lower flange plate 32 and the upper flange plate 41 is 12 to 16mm, and the width is 200mm; the lower flange plate 32 and the upper flange plate 41 are connected by a connecting member. The connecting piece is a high-strength bolt 5, the height of the high-strength bolt 5 is 35-40mm, and the diameter of the high-strength bolt 5 is 10-16mm. The concrete structure layer 8 is an ultrahigh-performance fiber reinforced cement-based material structure layer, is made of an ECC (error correction code) concrete layer, an RPC (remote procedure concrete) concrete layer or an STC (concrete control series) concrete layer, has the outstanding advantages of high tensile strength and compressive strength, good ductility and durability and the like, can obviously reduce the thickness of the bridge deck structure layer, and has wide applicability. The connecting member of the concrete structure layer 8 and the steel top plate 1 is a shear connector, such as a stud 6. A structural system with cooperative stress is formed between the steel top plate 1 and the concrete structural layer 8 through a shear connector, the thickness and the dead weight of the concrete structural layer 8 can be further reduced, the requirements on required rigidity and durability are met, and meanwhile, the light weight and the high strength of the structural system can be realized.
The upper diaphragm plate 3 is arranged at two ends of the steel top plate 1, and a trapezoidal through hole 30 and a U-shaped through hole 31 are arranged on the upper diaphragm plate 3. The trapezoidal through hole 30 and the U-shaped through hole 31 are used for installing the U-shaped longitudinal rib, the bottom of the trapezoidal through hole 30 is connected with the top of the U-shaped through hole 31, and the shape of the trapezoidal through hole 30 is consistent with the outer contour of the U-shaped longitudinal rib. The U-shaped longitudinal rib penetrates through the trapezoidal through holes 30 in the transverse partition plates 3 at the upper parts of the two ends and is connected with the steel top plate 1, and a double-sided fillet weld 9 is arranged at the joint of the U-shaped longitudinal rib and the steel top plate 1. Compared with the traditional orthotropic steel bridge panel in which the longitudinal ribs are welded and connected with the steel top plate 1 through single-sided fillet welds, the double-sided fillet welds 9 have the advantages that the structure of the double-sided fillet welds 9 adopts a partial penetration welding or full penetration welding mode, the structure of similar cracks at the root part of the weld can be effectively eradicated, various initial welding defects introduced at the root part of the weld in the welding process are reduced, the fatigue stress amplitude of welding details is reduced, and the fatigue resistance of the welding details of the U-shaped longitudinal ribs 2 and the steel top plate 1 is improved.
The two ends of the U-shaped through hole 31 are semi-circular arcs, and the radius of the semi-circular arcsRIs greater than the distance from the bottom edge of the U-shaped through hole 31 to the bottom edge of the trapezoidal through hole 30d. In the embodiment of the present invention, the U-shaped through hole 31 has a bilateral symmetry structure, and the semicircular arc is tangent to the side of the trapezoidal through hole 30. Radius of the semi-circular arcR40 to 80mm, the distance from the bottom edge of the U-shaped through hole 31 to the bottom edge of the trapezoidal through hole 30d10 to 12mm. As shown in fig. 6, the width of the U-shaped through hole 31 provided at the intersection of the U-shaped longitudinal rib 2 and the upper diaphragm 3 of the conventional steel bridge deck, such as Eurocode3, is always kept uniform; and the embodiment of the utility model provides a then increase the radius at U type through-hole 31 both ends, the while upper portion cross slab 3 is in indulging the rib ending position and reserving the broadside of certain length, leaves the distance between the base of U type through-hole 31 and trapezoidal through-hole 30 base promptlydAnd the whole U-shaped through hole 31 is in smooth transition by polishing, so that the local stress of the cross structure details under the wheel load effect can be obviously improved, the fatigue stress amplitude of the cross structure details is reduced, and the service fatigue life of the cross structure details is prolonged.
The embodiment of the utility model provides a compare in traditional orthotropic steel bridge deck plate structure, indulge rib 2 and 1 welding details of steel roof and U type at the U type and indulge rib 2 and the 3 cross structure details of upper portion diaphragm adopt the novel trompil form of dihedral angle welding 9 and diaphragm respectively, effectively reduce the U type and indulge rib 2 and 1 welding details of steel roof and U type and indulge the stress concentration effect at tired vulnerable site such as rib 2 and 3 cross structure details of upper portion diaphragm. Meanwhile, an ultrahigh-performance fiber reinforced concrete structural layer 8 is introduced, an integral structure with cooperative stress is formed through the shear connectors, the mechanical properties of materials and the structural layer form of a bridge deck pavement layer are improved, the fatigue performance of the combined bridge deck plate structure can be remarkably improved, the composite bridge deck plate structure has the outstanding characteristics of light weight, high strength, high rigidity, good integrity, excellent durability and the like, the fatigue life of an orthotropic steel bridge deck plate structure and the durability of the bridge deck pavement layer are effectively prolonged, and therefore the sustainable development of steel structure bridges is promoted. The embodiment of the utility model provides a construction is convenient and can adopt the mode of batch production, assembly to build, therefore has great practical value and good economic benefits, has wide application prospect in the construction of steel-concrete composite structure bridge.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An assembled steel-concrete combined bridge deck slab structure comprises a steel-concrete combined bridge deck slab and a lower supporting structure connected with the steel-concrete combined bridge deck slab, and is characterized in that the steel-concrete combined bridge deck slab comprises a steel top plate, U-shaped longitudinal ribs, an upper transverse clapboard, a steel bar net structure arranged on the steel top plate and a concrete structure layer poured on the steel top plate and the steel bar net structure and connected with the steel top plate through a connecting piece; the lower support structure includes a lower diaphragm; the upper transverse clapboard is connected with the lower transverse clapboard, the upper transverse clapboard is arranged at two ends of the steel top plate, and the upper transverse clapboard is provided with a trapezoidal through hole and a U-shaped through hole; the bottom of the trapezoidal through hole is connected with the top of the U-shaped through hole, and the shape of the trapezoidal through hole is consistent with the outer contour of the U-shaped longitudinal rib; the two ends of the U-shaped through hole are semicircular arcs, and the radius of the semicircular arcs is larger than the distance from the bottom edge of the U-shaped through hole to the bottom edge of the trapezoidal through hole; the U-shaped longitudinal rib penetrates through the trapezoidal through holes in the transverse partition plates at the upper parts of the two ends and is connected with the steel top plate, and a double-sided fillet weld is arranged at the joint of the U-shaped longitudinal rib and the steel top plate.
2. An assembled steel-concrete composite bridge deck structure according to claim 1, wherein the radius of the semi-circular arc is 20 to 40mm.
3. The assembled steel-concrete combined bridge deck structure as claimed in claim 1, wherein the distance from the bottom edge of the U-shaped through hole to the bottom edge of the trapezoidal through hole is 10 to 12mm.
4. An assembled steel-concrete composite deck structure according to claim 1, wherein the bottom end of the upper diaphragm and the top end of the lower diaphragm are provided with a lower flange plate and an upper flange plate, respectively; the lower flange plate and the upper flange plate are connected through a connecting piece.
5. The assembled steel-concrete combined bridge deck structure according to claim 1, wherein the concrete structure layer is an ultra-high performance fiber reinforced cement-based material structure layer made of an ECC (error correction code) concrete layer, an RPC (remote control concrete) concrete layer or an STC (space time concrete) concrete layer and has a thickness of 60 to 85mm.
6. An assembled steel-concrete composite deck structure according to claim 1, wherein said rebar grid structure comprises transverse and longitudinal rebar interconnected.
7. An assembled steel-concrete composite bridge deck structure as claimed in claim 4, wherein the lower flange plate and the upper flange plate have a thickness of 12 to 16mm and a width of 200mm.
8. An assembled steel-concrete composite bridge deck structure as claimed in claim 4, wherein the lower flange plate and the upper flange plate are connected through high-strength bolts, the height of the high-strength bolts is 35-40mm, and the diameter of the high-strength bolts is 10-16mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221874093.7U CN217948777U (en) | 2022-07-20 | 2022-07-20 | Assembled steel-concrete combined bridge deck structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221874093.7U CN217948777U (en) | 2022-07-20 | 2022-07-20 | Assembled steel-concrete combined bridge deck structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217948777U true CN217948777U (en) | 2022-12-02 |
Family
ID=84223147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221874093.7U Active CN217948777U (en) | 2022-07-20 | 2022-07-20 | Assembled steel-concrete combined bridge deck structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217948777U (en) |
-
2022
- 2022-07-20 CN CN202221874093.7U patent/CN217948777U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109024225B (en) | Ultra-high performance concrete truss arch piece unit, truss arch piece bridge and construction method | |
| CN102086677A (en) | Prefabricated reinforced concrete beam and connection joint of reinforced concrete column and beam | |
| CN108660921B (en) | Orthotropic steel-ultra-high performance concrete bridge deck structure and construction method thereof | |
| CN206385460U (en) | Combined floorings | |
| CN108978856B (en) | Assembly type honeycomb beam-slab structure system | |
| CN102776829A (en) | Steel pipe concrete combined truss bridge | |
| CN111236091B (en) | Concrete lining reinforcing structure of corrugated steel web box girder bridge | |
| CN217948777U (en) | Assembled steel-concrete combined bridge deck structure | |
| CN110273362B (en) | Orthogonal U-shaped steel bridge deck | |
| CN108643356B (en) | Assembled gangue haydite concrete shaped steel beam column node structure | |
| CN216338993U (en) | Longitudinal joint for steel-UHPC (ultra high performance concrete) assembled pi-shaped combination beam | |
| CN215484069U (en) | Steel pipe concrete truss prestressing force superposed beam | |
| CN213927078U (en) | Prefabricated assembly type steel concrete mixed beam with angle steel connecting piece prefabricated plate part | |
| CN115233536A (en) | Light-weight assembled steel-UHPC (ultra high performance polycarbonate) composite beam and loading and unloading method thereof | |
| CN114775908A (en) | Assembled connection structure with prefabricated post and girder steel | |
| CN115262388A (en) | Assembled steel-concrete combined bridge deck structure | |
| CN112854596A (en) | Combined beam with perforated steel plate connecting piece and split stud connecting piece and construction method | |
| CN112176850B (en) | Steel-UHPC combined structure shear connector and manufacturing and mounting method thereof | |
| CN212426678U (en) | Assembled light steel sheet composite beam bridge structure | |
| CN212270685U (en) | Orthotropic steel bridge deck slab and ultra-high performance concrete combined bridge | |
| CN109487699B (en) | Steel plate support-inclined nail combined type interface connection steel-UHPC thin plate combined structure system | |
| CN112324051A (en) | Steel pipe concrete truss prestressing force superposed beam | |
| CN112195751A (en) | Semi-penetrating type steel truss bridge | |
| CN112160241A (en) | Orthotropic steel bridge deck fatigue reinforcing body structure and construction method thereof | |
| CN213571602U (en) | Reinforced structure for enhancing shearing-resistant bearing capacity of box beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |