CN211517947U - Bridge case roof beam is prefabricated with shaped steel pedestal - Google Patents
Bridge case roof beam is prefabricated with shaped steel pedestal Download PDFInfo
- Publication number
- CN211517947U CN211517947U CN201922108442.9U CN201922108442U CN211517947U CN 211517947 U CN211517947 U CN 211517947U CN 201922108442 U CN201922108442 U CN 201922108442U CN 211517947 U CN211517947 U CN 211517947U
- Authority
- CN
- China
- Prior art keywords
- pedestal
- box girder
- steel
- prefabricated
- panel
- 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
Abstract
The utility model relates to a bridge case roof beam is prefabricated with shaped steel pedestal, plane and crossbeam bottom surface welded fastening on the pre-buried angle bar of pedestal lower part, the main part of pre-buried angle bar is pre-buried in the concrete foundation, the longeron is fixed to the crossbeam top, and the panel is laid to the longeron top. The utility model can replace the traditional reinforced concrete pedestal, and is easy to maintain and reform; the assembly can be improved according to actual needs, multiple beam length pedestals can be shared, and the occupied area is saved; has sufficient strength, rigidity and stability; the construction progress can be accelerated, and the construction cost can be saved; the internal space of the pedestal is fully utilized, and pipelines, electric wires and the like of a spraying system can be reasonably distributed in the pedestal, so that the pedestal is convenient to use and maintain; when construction is needed, the reverse pre-camber can be adjusted conveniently and quickly, and the requirements of specification, standard, high efficiency, safety and the like are met.
Description
Technical Field
The utility model relates to a bridge manufacturing technology field specifically is a bridge case roof beam is prefabricated with shaped steel pedestal.
Background
The box girder is one of bridge engineering center girders, is hollow inside, has flanges on two sides of the upper part, is a common structural form of a large-span bridge, and is generally used on a bridge with a large span. The outer shape is like a box and is called a steel box girder. In recent years, infrastructure such as roads and the like in China develops rapidly, the proportion of the bridge occupied in the infrastructure is larger and larger, mountain-crossing, river-crossing and coastal construction becomes a normal state, and the upper structure of the bridge is simply supported and then a continuous box girder becomes a normal state.
The box girder is divided into a prefabricated box girder and a cast-in-place box girder, wherein the prefabricated box girder can be erected after the lower foundation pile project is completed by combining a bridge girder erection machine after being prefabricated in an independent field, so that the project progress can be accelerated, and the construction period can be saved; and is therefore the most common form of box girder fabrication for prefabricated box girders. The traditional precast box girder adopts a concrete platform construction method, namely, the construction is carried out according to the working procedures of binding reinforcing steel bars, filling a mould, pouring concrete, maintaining and removing the mould according to the size requirement of a girder body.
During the manufacturing process, the following problems arise:
1. the reinforced concrete pedestal that uses needs to occupy the manufacturing site for a long time, influences other equipment construction in place.
2. The reinforced concrete pedestal can only be suitable for the production of box girders which are shorter than or equal to the length of the pedestal, and the applicable length is limited.
3. Once the reinforced concrete pedestal is manufactured, the reinforced concrete pedestal can only be used locally in a prefabricated field, and due to the fact that the reinforced concrete pedestal is large in size and weight, the reinforced concrete pedestal cannot be transported to the next prefabricated field to be used continuously, resource waste is caused, and construction cost is improved.
After the box girder is poured, certain manpower is consumed to regularly spray water to maintain the box girder main body, and the box girder is prevented from cracking.
Disclosure of Invention
The utility model provides a steel pedestal for prefabricating a bridge box girder, which can replace the traditional reinforced concrete pedestal and is easy to maintain and reform; the assembly can be improved according to actual needs, multiple beam length pedestals can be shared, and the occupied area is saved; has sufficient strength, rigidity and stability; the construction progress can be accelerated, and the construction cost can be saved; the internal space of the pedestal is fully utilized, and pipelines, electric wires and the like of a spraying system can be reasonably distributed in the pedestal, so that the pedestal is convenient to use and maintain; when construction is needed, the reverse pre-camber can be adjusted conveniently and quickly, and the requirements of specification, standard, high efficiency, safety and the like are met.
In order to realize the above the utility model discloses the purpose, the technical scheme who adopts is:
the utility model provides a bridge box girder is prefabricated with shaped steel pedestal, the plane is fixed with crossbeam bottom surface welded on the pre-buried angle bar of pedestal lower part, and the main part of pre-buried angle bar is pre-buried in the concrete foundation, the longeron is fixed to the crossbeam top, and the panel is laid to the longeron top.
The embedded angle iron is fixedly connected with the steel bars under the concrete floor to bear the structure of the integral section steel pedestal, the section steel pedestal and the concrete floor form a firm connection structure, and a base point for welding and fixing the cross beam is provided; the transverse beams are made of I-beam section steel, the longitudinal beams are made of channel steel, the transverse beams and the longitudinal beams are in cross lap joint and are welded firmly to form a firm frame, and the stability and the rigidity are ensured; and stainless steel plate panels are laid above the transverse and longitudinal beams.
The prefabricated pedestal system of assembled shaped steel case roof beam adopts standard festival I-steel, channel-section steel to bear the main component of vertical load as the pedestal, and all contact surfaces all adopt welded connection, mainly pass through panel, channel-section steel, I-steel from the top down in proper order with case roof beam load transmission to the ground on, all regard basement rock as final bearing layer to offset vertical load finally, the system wholly forms a support system that intensity, rigidity and stability all satisfy various load atress requirements in the case roof beam concrete work progress.
A reserved groove is formed in the middle section of the pedestal, and the horizontal height of a panel of the reserved groove is lower than the horizontal height of panels at other positions of the pedestal; a slope adjusting plate is arranged in the reserved groove, and a wedge-shaped block embedded steel plate is placed on the slope adjusting plate.
The embedded steel plate of the wedge is a steel plate embedded at the bottom of the wedge of the support, the wedge is used for leveling the level of the beam, the beam bottom can be in comprehensive contact with the support after installation, the effect that the stress of the support is uniform is finally achieved, and the embedded steel plate is embedded at the bottom of the wedge. The gradient adjusting plate can adjust the gradient, so that the wedge-shaped block embedded steel plate above can be placed at any angle for subsequent concrete pouring, and finally the wedge-shaped block embedded steel plate is embedded into concrete at a certain angle; the front end and the rear end of the wedge-shaped block embedded steel plate are fixed with rubber square bars, and a gap between the gradient adjusting plate and the side wall of the reserved groove is plugged so as to avoid slurry leakage during pouring.
The spray pipes longitudinally penetrate between the cross beam and the panel, and the spray heads extend out of the side faces of the spray pipes to the side portions of the pedestal, so that compared with a traditional concrete pedestal, the maintenance water pipeline is hidden below the pedestal, the working space of a prefabricating yard is saved, the site is neat and simple, and construction safety accidents caused by disordered pipelines are avoided; on the other hand, the change of artifical water spray maintenance to automatic water spray maintenance has also been realized to the setting of fixed spray header, and the shower nozzle is followed the volume of case roof beam side down and is gone up the high pressure and spray, replaces the artifical water pipe of traditional to spray on the case roof beam, and efficiency is very improved.
The slope regulating plate comprises a flat plate on the upper portion and a plurality of screw rod regulators on the lower portion of the flat plate, and each screw rod regulator is composed of a screw rod and a nut capable of being twisted on the screw rod. When the height of the flat plate on one side of the slope adjusting plate needs to be increased, the nut only needs to be twisted by a wrench, the screw rod is lifted, the effect of increasing the flat plate on one side can be achieved, and the efficiency is high.
The shower nozzle is telescopic rotatory shower nozzle, and when non-operating condition, the shower nozzle contracts in the pedestal below, when needs water spray maintenance, stretches out the shower nozzle to the pedestal side, and the high pressure sprays that makes progress to rotate simultaneously, enlarge and spray the area.
The front end of the section steel pedestal is provided with the power taking box, so that construction is facilitated, power is taken, power is supplied to electric appliances such as an electric welding machine, a vibrating machine, a tensioning machine and an air compressor, and the phenomenon that field management is disordered due to the fact that wires are randomly connected in a field is reduced.
The utility model discloses a construction installation method, including following step:
(1) foundation construction: leveling the site, excavating a foundation pit after the foundation position of the foundation is taken out according to measurement lofting, and pouring the foundation by using C30 concrete after leveling and compacting;
(2) pouring a foundation: after the pedestal foundation is poured for the first time, measuring and lofting, determining the edge position of the pedestal position, installing angle steel along the longitudinal edge of the pedestal, fixing the angle steel by adopting bar planting and welding, and then pouring C30 concrete for the second time to reach the site design elevation;
(3) mounting a cross beam: welding the I-shaped steel and the angle steel embedded in the foundation, fixing the I-shaped steel and the angle steel on two sides of the top of the foundation by spot welding, keeping the I-shaped steel and the angle steel vertical, and strictly checking the elevation and the plane position of the I-shaped steel in the welding process;
(4) longitudinal beam installation: two sides of the beam are respectively provided with a channel steel, the distance between the outer edges of the channel steels is arranged according to the designed bottom width of the beam body, and the middle channel steel is provided with an equal-height channel steel which is respectively welded and fixed with the transverse I-shaped steel;
(5) and (3) installing a spray header and a panel: after the channel steel is installed, a spraying system water pipeline and a spray head can be installed, the spraying system water pipeline adopts a PPR hot melting pipe, the spray head adopts a pressurized telescopic rotary spray head, a stainless steel panel is laid after the spraying system pipeline and the spray head are installed, the edge of the stainless steel panel is fixed with the edge of the channel steel in an electric welding mode, and a welding spot is polished;
(6) adjusting the gradient of the embedded steel plate of the wedge block: a slope adjusting steel plate is arranged at the reserved groove position and used for adjusting a transverse slope and a longitudinal slope of the beam bottom embedded steel plate; the gradient adjusting steel plate is manufactured by welding adjusting nuts at four corners of a steel plate, and after a screw rod is installed, the heights of the four corners of the steel plate are adjusted by the nuts and the screw rod, so that cross slopes and longitudinal slopes of the steel plate meet design requirements;
(7) manufacturing a box girder: and (3) sticking rubber patches with the thickness of 2-3mm at the joint of the two sides of the section steel pedestal and the side template, building the side template of the box girder, manufacturing a steel reinforcement framework by taking the pedestal as a bottom film, and pouring the box girder.
Compared with the substantive characteristics and progress of the prior art, the utility model is:
1. the utility model can replace the traditional reinforced concrete pedestal, and is easy to maintain and reform; can improve the assembly according to actual need, realize the sharing of the long pedestal of multiple roof beam, practice thrift area.
2. The utility model can avoid the period of manufacturing the concrete pedestal and accelerate the construction progress; the transverse and longitudinal beam components of the pedestal can be detached after use and reused, so that the construction cost is saved; the integral structure of the pedestal has enough strength, rigidity and stability.
3. The utility model discloses make full use of the pedestal inner space, can be with rational arrangement such as spraying system pipeline, electric wire inside the pedestal, use and easy maintenance.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic view of the assembled structure of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is a cross-sectional view of A-A and B-B of FIG. 3; (A-A does not contain gradient adjusting plate and wedge block embedded steel plate)
FIG. 5 is a schematic view of an appearance structure of a slope adjustment plate;
the reference numbers in the figures are: 1. embedding angle iron; 2. a cross beam; 3. a stringer; 4. a panel; 5. a spray header; 51. a spray head; 6. a concrete foundation; 7. a slope adjusting plate; 8. embedding a steel plate in a wedge-shaped block; 9. reserving a groove; 10. rubber square bars; 11. a power taking box; 12. and (5) reinforcing steel bars.
Detailed Description
Example 1
The utility model provides a bridge box girder is prefabricated with shaped steel pedestal, the pre-buried 5# angle bar 1 of pedestal lower part goes up plane and 2 bottom surfaces welded fastening of crossbeam, and the main part of pre-buried angle bar 1 is pre-buried in concrete foundation 6, and 6.3# longeron 3 is fixed to 2 tops of crossbeam, and 8mm thick panel 4 is laid to the longeron top.
A reserved groove 9 is formed in the middle section of the pedestal, and the horizontal height of a panel of the reserved groove 9 is lower than that of panels 4 at other positions of the pedestal; a slope adjusting plate 7 is arranged in the reserved groove 9, and a wedge-shaped block embedded steel plate 8 is placed on the slope adjusting plate 7.
Between the beam 2 and the panel 4, a phi 32 PPR hot melt pipe spray header 5 is longitudinally arranged in a penetrating way, and the spray head 51 extends out of the side surface of the spray header 5 to the side part of the pedestal.
The gradient adjusting plate 7 comprises a flat plate 71 at the upper part and a plurality of screw rod adjusters 72 at the lower part of the flat plate, and the screw rod adjusters 72 consist of screw rods and nuts which can be twisted on the screw rods.
The spray head 51 is a pressurized telescopic rotary spray head.
Application examples
Constructing a 2# prefabricating field of a certain-place four-part system by adopting an assembly type steel box girder prefabricating pedestal;
the I item 2# box girder prefabrication field prefabricates 376 pieces of box girders, wherein 20m of the box girders are 216 pieces, 30m of the box girders are 112 pieces, and 40m of the box girders are 48 pieces. The box girder length type is more, and pedestal exchanges and reforms transform the frequency height in the work progress. The construction method of the prefabricated pedestal of the assembled steel box girder is suitable for the prefabrication construction of box girders with various lengths, and the project can be used for conveniently converting and transforming among prefabricated pedestals with various box girder lengths of 20m, 30m, 40m and the like. The construction method of the prefabricated pedestal of the assembled steel box girder is consistent with the assembly construction method advocated by the national urban and rural housing construction department. The construction process has no quality and safety accidents, and has the characteristics of good overall stability, high standardization degree, strong quality safety performance and the like. The construction method is very successful in application, and has remarkable quality, safety, environmental protection and social benefit, and the method obtains consistent favorable comments of owners, design and supervision units.
Claims (5)
1. The utility model provides a bridge box girder is prefabricated with shaped steel pedestal which characterized in that: the upper plane of the embedded angle iron (1) at the lower part of the pedestal is welded and fixed with the bottom surface of the cross beam (2), the main body of the embedded angle iron (1) is embedded in a concrete foundation (6), the longitudinal beam (3) is fixed above the cross beam (2), and the panel (4) is laid above the longitudinal beam.
2. The bridge box girder prefabricating section steel pedestal of claim 1, wherein: a reserved groove (9) is formed in the middle section of the pedestal, and the horizontal height of a panel of the reserved groove (9) is lower than the horizontal height of panels (4) at other positions of the pedestal; a slope adjusting plate (7) is arranged in the reserved groove (9), and a wedge-shaped block embedded steel plate (8) is placed on the slope adjusting plate (7).
3. The bridge box girder prefabricating section steel pedestal of claim 1, wherein: between crossbeam (2) and panel (4), vertically run through and set up spray header (5), shower nozzle (51) are stretched out to the pedestal lateral part from spray header (5) side.
4. The bridge box girder prefabricating section steel pedestal of claim 2, wherein: the slope adjusting plate (7) comprises a flat plate (71) on the upper portion and a plurality of screw rod adjusters (72) on the lower portion of the flat plate, and the screw rod adjusters (72) are composed of screw rods and nuts capable of being twisted on the screw rods.
5. The bridge box girder prefabricating section steel pedestal of claim 3, wherein: the spray head (51) is a telescopic rotary spray head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922108442.9U CN211517947U (en) | 2019-11-29 | 2019-11-29 | Bridge case roof beam is prefabricated with shaped steel pedestal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922108442.9U CN211517947U (en) | 2019-11-29 | 2019-11-29 | Bridge case roof beam is prefabricated with shaped steel pedestal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211517947U true CN211517947U (en) | 2020-09-18 |
Family
ID=72444299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922108442.9U Active CN211517947U (en) | 2019-11-29 | 2019-11-29 | Bridge case roof beam is prefabricated with shaped steel pedestal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211517947U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112976297A (en) * | 2021-02-08 | 2021-06-18 | 中交路桥建设有限公司 | Remanufacturing method of T-beam prefabricated pedestal |
| CN113199617A (en) * | 2021-05-13 | 2021-08-03 | 中建交通建设集团有限公司 | A assembled conversion frock for different end width prefabricated T roof beams |
| CN113524386A (en) * | 2021-07-27 | 2021-10-22 | 中国建筑一局(集团)有限公司 | Steel bench for precast beam construction and precast beam construction method |
| CN115091607A (en) * | 2022-07-14 | 2022-09-23 | 华能铜川照金煤电有限公司 | Construction method for accurately positioning pre-camber of precast beam pedestal |
-
2019
- 2019-11-29 CN CN201922108442.9U patent/CN211517947U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112976297A (en) * | 2021-02-08 | 2021-06-18 | 中交路桥建设有限公司 | Remanufacturing method of T-beam prefabricated pedestal |
| CN112976297B (en) * | 2021-02-08 | 2022-07-26 | 中交路桥建设有限公司 | Remanufacturing method of T-beam prefabricated pedestal |
| CN113199617A (en) * | 2021-05-13 | 2021-08-03 | 中建交通建设集团有限公司 | A assembled conversion frock for different end width prefabricated T roof beams |
| CN113524386A (en) * | 2021-07-27 | 2021-10-22 | 中国建筑一局(集团)有限公司 | Steel bench for precast beam construction and precast beam construction method |
| CN113524386B (en) * | 2021-07-27 | 2023-08-29 | 中国建筑一局(集团)有限公司 | Steel pedestal for precast beam construction and precast beam construction method |
| CN115091607A (en) * | 2022-07-14 | 2022-09-23 | 华能铜川照金煤电有限公司 | Construction method for accurately positioning pre-camber of precast beam pedestal |
| CN115091607B (en) * | 2022-07-14 | 2024-01-16 | 华能铜川照金煤电有限公司 | Construction method for accurately positioning pre-camber of precast beam pedestal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211517947U (en) | Bridge case roof beam is prefabricated with shaped steel pedestal | |
| CN107905111B (en) | A kind of rigid frame-continuous girder end bay construction technology | |
| CN109797651B (en) | Flat combined box girder with corrugated steel plate inner mold | |
| CN104088221B (en) | A kind of T-shaped plate girder precast segment unit based on steel truss and combined bridge deck | |
| CN103321155B (en) | Viaduct pier operation platform system and build this system and pour into a mould the method for bridge pier | |
| CN110965474A (en) | Construction method of cable tower cross beam | |
| CN113585075A (en) | Cast-in-place bridge deck formwork for steel-concrete composite beam | |
| CN112458877A (en) | Assembled steel-concrete combined rigid frame bridge and construction method thereof | |
| CN110409624B (en) | Reverse calculation and construction method for large equipment installation and main body structure | |
| CN108004932B (en) | Method for constructing steel-concrete composite beam by using beam-under-beam conveying mode | |
| CN204059179U (en) | A kind of T-shaped plate girder precast segment unit based on steel truss and combined bridge deck | |
| CN206722216U (en) | A kind of prefabricated girder of laminated floor slab | |
| CN105951983A (en) | Building frame structure and construction method thereof | |
| CN111851827A (en) | Assembly type prefabricated steel bar truss disassembly-free template system and manufacturing method thereof | |
| CN107012985A (en) | A kind of prefabricated girder and the laminated floor slab construction technology containing the prefabricated girder | |
| CN204780635U (en) | Super wide nonprismatic continuous beam 0# piece concreties and relieves construction structures | |
| CN111188268A (en) | Super-large cast-in-situ gravity type anchorage and construction method | |
| CN113638304B (en) | Concrete beam type bridge hidden cover beam structure system and construction method thereof | |
| CN212802185U (en) | Prefabricated steel bar truss floor of assembled form removal-free | |
| CN214459548U (en) | Assembled steel and concrete combined rigid frame bridge | |
| CN108867683B (en) | Rail-type movable foundation and construction method thereof | |
| CN212802189U (en) | Assembly type disassembly-free template | |
| CN111851830A (en) | Assembly type disassembly-free template and manufacturing method thereof | |
| CN207027858U (en) | A kind of post stretching precast beam pedestal for being applicable different length and cross sectional shape | |
| CN110748221A (en) | Prefabricated assembled pond guide wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210818 Address after: 530029 9th and 10th floors, Xinfa building, No. 39, Yunjing Road, Qingxiu District, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Navigation Construction Engineering Co.,Ltd. Address before: No.530001, xingyong Road, Nanning, Guangxi Zhuang Autonomous Region Patentee before: GUANGXI ROAD CONSTRUCTION ENGINEERING GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |