LU501492B1 - Hollow Slab Bridge Beam - Google Patents
Hollow Slab Bridge Beam Download PDFInfo
- Publication number
- LU501492B1 LU501492B1 LU501492A LU501492A LU501492B1 LU 501492 B1 LU501492 B1 LU 501492B1 LU 501492 A LU501492 A LU 501492A LU 501492 A LU501492 A LU 501492A LU 501492 B1 LU501492 B1 LU 501492B1
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- LU
- Luxembourg
- Prior art keywords
- hollow slab
- steel beam
- steel
- web
- connecting plate
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a hollow slab bridge, which comprises a beam body, a steel beam structure, a bottom connecting plate, a steel beam cast-in-place pavement layer, a steel bar, and a concrete cast-in-place pavement layer. The hollow slab bridge provided by the invention is a structure after replacing individual damaged hollow slab beams. Compared with the traditional scheme of replacing hollow slab beams, the steel beam structural parts can be welded and formed in the factory, which is more convenient for processing and installation, avoids the concrete curing time in the factory prefabricated hollow slab beams, and is convenient for rapid replacement of damaged hollow slab beams. Thus, it can quickly repair and strengthen the bridge, effectively shorten the maintenance cycle, reduce the impact of traffic, and thus gain great value of popularization.
Description
Hollow Slab Bridge Beam 7501492 Technical Field The invention relates to a hollow slab bridge beam.
Technical Background Hollow slab is mostly used for medium and small span bridges, which adopts prefabricated assembly method.
Most of the existing hollow slab bridges adopt multiple groups of hollow slab beams, which are arranged successively along the bridge span.
Hinge joints are set between adjacent hollow slab beams, including hinge joint frame and filled concrete.
After many years of use, this kind of hollow slab bridge is prone to damage of individual hollow slab beams.
The damaged hollow bridge needs to be replaced.
Due to the long distance from bridge construction, hollow slab beams are usually not reserved.
At present, two methods are mainly used for maintenance: 1. Cast in situ slab beam; 2. Replace the prefabricated hollow slab beam.
When pouring the slab beam at the construction site, it is not only necessary to arrange the form-work and support, which is labor-consuming and time-consuming.
Due to the large amount of concrete, it requires a particularly long concrete curing time and a particularly long construction period, which has a great impact on the normal traffic.
When customizing the control slab beam from the manufacturer, since the hollow slab beam is formed by concrete pouring, considering the concrete curing time, the customization takes a long time, which will also prolong the construction period and have a great impact on the normal traffic.
Summary of the Invention The invention aims to provide a hollow slab bridge beam to solve the technical problem that the hollow slab beam needs to be customized from the manufacturer when replacing individual damaged hollow slab beams in the prior art, resulting in a long construction period and affecting the traffic.
A hollow slab bridge beam comprises: The beam body comprises a plurality of hollow slab beams arranged in turn along the left and right span directions of the beam body, and each hollow slab beam extends along the left and right width directions of the beam body; 10901608 The steel beam structural member extends along the front and rear width direction of the beam body, grouting between the steel beam structural member and the hollow slab beam on the corresponding side to form a hinge joint, and the hollow slab beam on the corresponding side 1s defined as the adjacent beam of the steel beam; The pocket bottom connecting plate is detachably and fixedly connected with the steel beam structure through fastening bolts. The pocket bottom connecting plate is located below the steel beam adjacent beam and fixedly connected with the steel beam adjacent beam to seal the concrete when the hinge joint is formed by grouting; The steel beam cast-in-situ pavement reinforcement is connected with the upper part of the steel beam structural member and fixedly connected with the side cast-in-situ pavement reinforcement above the adjacent beam of the steel beam; The concrete cast-in-situ pavement layer covers the steel beam structural member and the steel beam cast-in-situ pavement layer reinforcement to form a steel-concrete composite structure.
Beneficial effects of the invention: In the hollow slab bridge provided by the invention, when it is necessary to lengthen the length of the hollow slab bridge or when it is necessary to replace the damaged hollow slab beam, the steel beam structure can be used to replace the hollow slab beam. After the steel beam structure is connected with the steel beam adjacent beam by the pocket connecting plate, grout between the steel beam structure and the steel beam adjacent beam to form a hinge joint. Thus, the steel beam structure is fixedly connected with the hollow slab beam. The steel beam cast-in-situ pavement reinforcement is fixedly connected with the side cast-in-situ pavement reinforcement, and the top grouting is used to form a steel-concrete composite structure, so as to effectively improve the overall strength of the hollow slab bridge. When the hollow slab beam is replaced by steel beam structural parts, it is not necessary to customize the hollow slab beam from the manufacturer, which saves the concrete curing time of the hollow slab beam made by the manufacturer, effectively shortens the bridge maintenance time, reduces the maintenance cost, and is more convenient for construction and rapid replacement and maintenance. 10501698 Descriptions of the Drawings Fig. 1 is a partial structural diagram of embodiment 1 of the hollow slab bridge provided by the present invention; Fig. 2 is a top view of Fig. 1; Fig. 3 is the assembly drawing of two hollow slab beams and steel beam structures in Fig. 1; Fig. 4 is the assembly drawing of the steel beam structural member, perforated reinforcement and pocket bottom connecting plate in Fig. 3; Fig. 5 is an enlarged view of a in Fig. 4; Fig. 6 is a schematic diagram on the left side of Fig. 4; Fig. 7 is a partial structural diagram of embodiment 2 of the hollow slab bridge provided by the present invention; Fig. 8 is the matching structure diagram of the end steel beam structural member and the hollow slab beam on the corresponding side in Fig. 7; Fig. 9 is a partial structural diagram of embodiment 3 of the hollow slab bridge provided by the present invention; Fig. 10 1s a front view of Fig. 9; Fig. 11 is a partial structural view of the right side of the left steel beam structural member in Fig. 10.
The best embodiment for implementing the invention Embodiment 1 of the hollow slab bridge provided by the invention: As shown in the attached figure, the hollow slab bridge mainly includes a beam body, the beam body includes a plurality of hollow slab beams arranged successively along the left and right span directions of the beam body, each hollow slab beam extends along the left and right width directions of the beam body, and a plurality of hollow slab beams are fixedly connected to form a support.
The hollow slab bridge in this embodiment is a hollow slab bridge after replacing individual damaged hollow slab beams with a steel beam structure 300 as an intermediate steel beam structure.
The two hollow slab beams 100 are spaced along the left and right span direction of the hollow slab bridge beam to form the installation space, the steel beam structure 300 1s located at the installation space, the two hollow slab beams are steel beam adjacent beams, a spacing joint is formed between the steel beam adjacent beam and the steel beam structure 300, and the spacing joint is grouted to form a hinge joint 200 to realize the fixed connection between the steel beam adjacent beam and the middle steel beam structure; The structure of the steel beam structure includes the left web 1, the right web 7, the transverse connecting plate 6, the diaphragm 4, the left bottom plate 3 and the right bottom plate
8. The transverse connecting plate 6 and the diaphragm 4 are located between the webs on both sides as middle lower connectors and welded with the inner sides of the webs on both sides. The left bottom plate 3 is welded to the bottom of the left web 1, and the right bottom plate 8 is welded to the bottom of the right web 7. In addition, the bottom plates on both sides are also welded with the middle diaphragm 4 to form a box girder structure.
The left web 1 and right web 7 mentioned above are corrugated steel webs. The transverse connecting plate 6 is located above the diaphragm plate 4. The left and right sides of the transverse connecting plate 6 are welded to the inner sides of the two webs. Because the web is a waveform structure, in order to ensure fitting, the left and right ends of the transverse connecting plate are also designed as a waveform structure, which 1s consistent with the web structure to improve the bonding ability.
The upper end of the diaphragm 4 is welded with the transverse connecting plate 6, the left and right ends are welded with the web on both sides, and the lower end is welded with the bottom plate on both sides.
The above mentioned transverse joint plate 6 and diaphragm plate 4 serve as the intermediate joint structure to support the two webs. Moreover, the transverse joint plate 6 extends in the front and back direction and forms a grooved structure with the two webs to accommodate the concrete.
In order to facilitate the maintenance and overhaul of the internal steel beam structural parts,
the left bottom plate 3 and the right bottom plate 8 are designed as component separation 901492 structures, and maintenance intervals are formed between them.
For the bottom plates on both sides, they are vertically welded with the corresponding side webs. The bottom plates on both sides here are pocket bottom installation bottom plates, which 5 are used to fixedly connect the corresponding pocket bottom connecting plates. In order to facilitate the connection between diaphragm 4 and the corresponding side pocket bottom connecting plate, the left bottom plate is taken as an example. The left bottom plate has an inner plate part 31 located in the opposite side of both sides web and an outer plate part 32 located in the dorsal and lateral side of both sides web phase. The inner plate part 31 is welded to the bottom of diaphragm 4, and the outer plate part 32 is fixedly connected with the pocket bottom connecting plate on the corresponding side by bolt connection structure, which is convenient to connect.
The structure of the bottom connecting plates on both sides is the same. Here, take the left bottom connecting plate 2 as an example. One side of the left bottom connecting plate 2 is fixedly connected with the left bottom plate 3 through fastening bolts, and the other side is bonded and fixed with the corresponding side hollow slab beam 100. After the steel beam connector is lowered into the spacing joint, the left bottom cover connecting plate 2 is fixedly connected to the bottom of the left bottom plate 3 from below the bridge, and then the steel beam structure 300 is lifted up to make the left bottom cover connecting plate 2 bonded and fixed to the bottom of the corresponding side hollow slab beam 100.
Taking the left pocket bottom connecting plate 2 as an example: as shown in Fig. 5, the left pocket bottom connecting plate 2 comprises an misplaced outer connecting part 21 and an inner connecting part 22. The two connecting parts are connected through an inclined connecting plate part, and the inner connecting part 22 in the left pocket bottom connecting plate 2 is misplaced downward relative to the outer connecting part 21 to form a misplaced step 602 on the left pocket bottom connecting plate. The inner connecting part 22 is fixedly connected with the outer plate part 32 of the left bottom plate 3 through fastening bolts, and the outer connecting part 21 is fixedly connected with the hollow plate beam on the corresponding side by bonding.
Moreover, the lower side of each hollow slab beam 100 is respectively provided with a 901492 inner end 101 protruding towards the steel beam structure 300, the outer connecting part is located on the outside of the inner end 101 on the corresponding side, and then cooperates with the dislocation step 602 on the bottom connecting plate, so that the bottom of the hinge joint formed between the steel beam structure and the adjacent beam of the steel beam on the corresponding side is a hook structure 603. The hook structure 603 can effectively improve the connection strength between the steel beam structure and the hollow slab beam 100. In this embodiment, the upper parts of the webs on both sides are respectively provided with perforations 401, the two rows of perforations correspond one by one in the left and right directions to form a pair of perforations, and a perforated reinforcement 400 is respectively installed in each pair of perforations, so that the perforated reinforcement 400 extends along the left and right directions and is distributed at intervals along the front and rear directions. The left and right ends of the perforated reinforcement are bound or welded with the side cast-in-situ pavement reinforcement above the corresponding side hollow slab beam.
Then, grouting is performed on the top of the steel beam structure 300 to form the cast-in-place concrete pavement layer, which covers the steel beam structure, steel beam cast-in-place pavement layer and side cast-in-place pavement layer to form the steel-concrete composite structure.
In order to improve the binding force between steel beam structural parts and concrete, bolts are arranged on the back and lateral sides of the web and the upper side of the transverse connecting plate respectively. Bolts are fixed on the side of the corresponding plate by means of welding connection. After concrete grouting is solidified, bolts will enter the concrete and improve the binding performance.
Embodiment 2: When replacing the end hollow slab beam, in the hollow bridge: The steel beam structural member 300 is an end steel beam structural member 10 arranged at the end of the beam body, the steel beam adjacent beam is arranged on the side of the end steel beam structural member 10, and the web on the side of the end steel beam structural member 10 facing the steel beam adjacent beam is the web of the hinge joint 15; 10901608 Therefore, we only need to detachable connect the bottom plate 12 at the bottom of the bottom plate 11 on the right side by fastening bolts. Other connection methods are the same as embodiment 1. Then, grouting is made to the top of the structural part of the end steel beam to form cast-in-place concrete pavement layer, including cast-in-place layer 16. The steel beam structure at the top, steel beam cast-in-place pavement layer and side cast-in-place pavement layer are covered to form a steel-concrete composite structure.
Embodiment 3: This is mainly for the case where steel beam structural members 300 need to be set on both sides of the middle hollow slab beam: The left steel beam structure 90 and the right steel beam structure 95 here have the same structure as the middle steel beam structure in the above embodiment 1, except that a transverse reinforcing connector 93 is fixedly connected between the left steel beam structure 90 or the right steel beam structure 95. The transverse reinforcing connector 93 is specifically channel steel, and a plurality of channel steels are arranged at intervals along the front and rear length direction of the corresponding steel beam structure. The left end of each transverse reinforcing connector 93 is welded with the upper side of the right bottom plate 92 of the left steel beam structure 90, and the right end of each transverse reinforcing connector 93 is welded with the upper side of the left bottom plate 94 of the right steel beam structure 95, so as to fixedly connect two similar steel beam structures together and improve the integrity and structural stability of the bridge.
In this embodiment, the transverse reinforcing connector is specifically channel steel. In other embodiments, the transverse reinforcing connector can also be a rectangular tube, circular tube or reinforcing plate. Certainly, the transverse reinforcing connector can also be a connecting plate extending along the front and rear directions. The connecting plate can be fixedly connected with the bottom plates on both sides through fastening bolts, that is, the connecting plate can be pressed together with the corresponding side pocket bottom connecting plate, and the fixed connection of the corresponding side bottom plate, connecting plate and corresponding side pocket bottom connecting plate can be realized through the same fastening bolts. 10901608 Perforated reinforcement 96 is installed on the upper part of the steel beam structure on both sides to form the reinforcement cast-in-situ pavement reinforcement, which is used for fixed connection with the side cast-in-situ pavement reinforcement above the side hollow slab beam.
In order to improve the structural strength, the perforated reinforcement 96 can cover the left steel beam structure, the middle hollow slab beam and the right steel beam structure. Finally, grout above the steel beam structure, and then set the cast-in-situ layer and pavement layer.
In addition, it should be noted that two steel beam structural members connected by transverse reinforcing connectors can form a steel beam structural member group. In other embodiments, if three or more steel beam structural members are arranged in a short distance on the hollow slab bridge, the adjacent two steel beam structural members are separated to form a steel beam structural member group, and the adjacent two steel beam structural members are fixedly connected together by transverse reinforcing connectors to improve the stability of the whole bridge. Moreover, the steel beam structural members can be middle steel beam structural members or end steel beam structural members. Generally speaking, one or two hollow slab beams will be set in the middle of any two adjacent steel beam structural members in the same steel beam structural member group, and the distance is not too far. The hollow slab bridge provided by the invention is a structure after replacing individual damaged hollow slab beams. Compared with the traditional scheme of replacing hollow slab beams, the steel beam structural parts can be welded and formed in the factory, which is more convenient for processing and installation, avoids the concrete curing time in the factory prefabricated hollow slab beams, and is convenient for rapid replacement of damaged hollow slab beams. Rapid repair and reinforcement of bridges can effectively shorten the maintenance cycle and reduce the impact of traffic, which is of great value in popularization.
Claims (5)
1. A hollow slab bridge beam comprises: The beam body comprises a plurality of hollow slab beams arranged in turn along the left and right span directions of the beam body; The invention 1s characterized in that the beam body also comprises: The steel beam structural member extends along the front and rear width direction of the beam body, grouting between the steel beam structural member and the hollow slab beam on the corresponding side to form a hinge joint, and the hollow slab beam on the corresponding side 1s defined as the adjacent beam of the steel beam; The bottom connecting plate 12 is located below the adjacent beam of the steel beam and is fixedly connected with the adjacent beam of the steel beam to seal the concrete when the hinge joint 1s formed by grouting; The steel beam cast-in-situ pavement reinforcement is connected with the upper part of the steel beam structure 300 and fixedly connected with the side cast-in-situ pavement reinforcement above the adjacent beam of the steel beam; The concrete cast-in-situ pavement layer covers the steel beam structural member 300 and the steel beam cast-in-situ pavement layer reinforcement to form a steel-concrete composite structure.
2. According to claim 1, the hollow slab bridge beam is characterized in that the steel beam structural member comprises: The left web and the right web are arranged at intervals on both sides, at least one side of the web is a hinged web, and the hinged web is grouted between the hinged web and the adjacent beam of the steel beam on the corresponding side to form a hinged joint. The bottom of the hinged web is provided with a pocket bottom connecting structure, which is fixedly connected with the pocket bottom connecting plate; The upper part of the webs on both sides is provided with a reinforcement connection structure, which is connected with the reinforcement of the cast-in-situ pavement layer of the steel beam;
The transverse connecting plate is located between the webs on both sides. The transverse 901492 connecting plate is fixedly connected with the webs on both sides and extends along the front and rear direction to form a groove structure with the webs on both sides; The lower connecting piece is located below the transverse connecting plate and is fixedly connected with the webs on both sides. A plurality of lower connecting pieces extend along the front and rear direction or are distributed at intervals along the front and rear direction.
3. According to claim 2, the hollow slab bridge beam is characterized in that the bottom of the left web and the right web are correspondingly fixed with a left bottom plate and a right bottom plate, one end of each side bottom plate is fixedly connected with the lower connector, and the other side is provided with a bottom connection structure.
4. According to claim 2, the hollow slab bridge beam is characterized in that the upper side of the transverse connecting plate and / or the hinge joint web face the outer side of the corresponding hinge joint.
5. According to claims 1-4, any hollow slab bridge beam is characterized in that at least two steel beam structural members are arranged along the left and right span directions of the beam body, any two adjacent steel beam structural members are fixedly connected through transverse reinforcing connectors, the transverse reinforcing connectors are located below the adjacent beams of the corresponding steel beams, and a plurality of transverse reinforcing connectors extend along the front and rear directions or are distributed at intervals in turn.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011002887.XA CN114250718B (en) | 2020-09-22 | 2020-09-22 | Hollow slab bridge and maintenance method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU501492B1 true LU501492B1 (en) | 2022-03-22 |
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ID=78083929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU501492A LU501492B1 (en) | 2020-09-22 | 2021-07-20 | Hollow Slab Bridge Beam |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN114250718B (en) |
| LU (1) | LU501492B1 (en) |
| WO (1) | WO2021209078A2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113981839A (en) * | 2021-10-22 | 2022-01-28 | 中冶南方城市建设工程技术有限公司 | Method for reinforcing transverse overall performance of prefabricated hollow slab beam |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002250009A (en) * | 2001-02-23 | 2002-09-06 | Nippon Steel Corp | Steel-concrete composite beam using corrugated steel plate web |
| JP2009281141A (en) * | 2009-09-03 | 2009-12-03 | As Giken Kk | Hollow floor slab unit for prefabricated bridge, hollow floor slab for prefabricated bridge, and construction method of hollow floor slab bridge |
| CN102926331B (en) * | 2012-10-30 | 2015-06-24 | 商丘市豫东公路勘察设计有限公司 | Concrete hollow slab bridge strengthened by transverse integral clamping connection |
| CN203947427U (en) * | 2014-06-10 | 2014-11-19 | 上海申继交通科技有限公司 | Collapsible hinge seam reinforcing cage |
| CN109594484A (en) * | 2017-09-30 | 2019-04-09 | 郑州市交通规划勘察设计研究院 | Bridge strengthening device, ruggedized construction, reinforced construction method and reinforcement and repair method |
| CN108411801A (en) * | 2018-05-10 | 2018-08-17 | 山东交通学院 | One kind reinforcing the old hollow slab bridge construction of single hole and construction method by real abdomen Bars In Poured Concrete Slab |
| CN108316164B (en) * | 2018-05-10 | 2023-08-29 | 山东交通学院 | Structure for reinforcing old assembled hollow slab girder bridge by using new girder and construction method |
| CN109295849A (en) * | 2018-10-31 | 2019-02-01 | 福州大学 | A kind of cored slab hinge seam construction and its construction method with anchor plate |
| CN111074772A (en) * | 2019-12-11 | 2020-04-28 | 扬州大学 | Improved T-shaped steel prefabricated hollow slab beam bridge hinge joint structure and construction process thereof |
| CN111455877B (en) * | 2020-04-03 | 2021-02-05 | 商丘市豫东公路勘察设计有限公司 | Clamping and reinforcing method for assembled concrete hole hollow slab bridge |
| CN111622132A (en) * | 2020-05-08 | 2020-09-04 | 中铁大桥局集团有限公司 | Reinforcing method of hollow slab beam bridge |
| CN213709190U (en) * | 2020-09-22 | 2021-07-16 | 郑州市交通规划勘察设计研究院 | Hollow slab bridge |
-
2020
- 2020-09-22 CN CN202011002887.XA patent/CN114250718B/en active Active
-
2021
- 2021-07-20 LU LU501492A patent/LU501492B1/en active IP Right Grant
- 2021-07-20 WO PCT/CN2021/107346 patent/WO2021209078A2/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021209078A3 (en) | 2021-12-02 |
| WO2021209078A2 (en) | 2021-10-21 |
| CN114250718A (en) | 2022-03-29 |
| CN114250718B (en) | 2023-03-31 |
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| FG | Patent granted |
Effective date: 20220322 |