CN216379198U - Box girder structure for external cable - Google Patents
Box girder structure for external cable Download PDFInfo
- Publication number
- CN216379198U CN216379198U CN202122374552.7U CN202122374552U CN216379198U CN 216379198 U CN216379198 U CN 216379198U CN 202122374552 U CN202122374552 U CN 202122374552U CN 216379198 U CN216379198 U CN 216379198U
- Authority
- CN
- China
- Prior art keywords
- diaphragm plates
- box girder
- backing plate
- girder structure
- bars
- 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 provides a box girder structure for an external cable, which comprises: the device comprises a base steel plate, a transverse clapboard, an anchor backing plate and a steering device; the two diaphragm plates are arranged on the base steel plate alternately, the two diaphragm plates are arranged on the opposite sides of the two diaphragm plates, the anchor backing plate is provided with spiral ribs, and the steering device penetrates through the spiral ribs, the anchor backing plate and the diaphragm plates. The box girder structure of the utility model designs two diaphragm plates, an anchor backing plate and a spiral rib, and a steering device is arranged between the two diaphragm plates, so that an anchoring steering system has certain axial rigidity, shearing rigidity and bending rigidity, and has better anchoring effect on external prestressed beams; and moreover, the box girder structure can be processed and manufactured in a factory in advance, so that the quality control is facilitated, and the construction period is shortened.
Description
Technical Field
The utility model relates to the technical field of bridge reinforcement, in particular to a box girder structure for an external cable.
Background
With the continuous development of highway traffic industry in China, the construction scale and the construction quantity of bridges are continuously increased. In the construction process of bridge engineering, the steel-concrete composite beam is often used as a overpass bridge in engineering projects, and the application of the prestress external cable technology to the steel-concrete composite beam can obviously improve the bearing capacity of the bridge, obviously improve the stress performance of the bridge structure and simultaneously improve the safety and comfort level of vehicle passing.
The external prestressed steel beams are tensioned in the existing prestressed concrete bridge, and an anchoring steering system is an indispensable construction facility. The anchoring steering system is an important structure for connecting the post-added external prestressed steel beam with the existing concrete bridge, and is used for applying and converting the tensile force of the post-added external prestressed steel beam into the existing bridge span structure.
In the external prestressed steel beam reinforcement of a common bridge structure, an anchoring or steering system is made into a post-cast concrete block form. The post-cast concrete block is adopted as an anchoring or steering system of the external prestressed steel beam, and has the following defects: 1. the system adopts a concrete form, so that the structure is heavy, and the additional weight brought to the original structure is large; 2. the joint surface between the post-cast concrete and the existing bridge span concrete is difficult to process and easy to have the problem of shear failure.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a box girder structure for an external cable, which comprises: the device comprises a base steel plate, a transverse clapboard, an anchor backing plate and a steering device; the two diaphragm plates are arranged on the base steel plate alternately, the two diaphragm plates are arranged on the opposite sides of the two diaphragm plates, the anchor backing plate is provided with spiral ribs, and the steering device penetrates through the spiral ribs, the anchor backing plate and the diaphragm plates.
The box girder structure of the application designs two diaphragm plates, an anchor backing plate and a spiral rib, and a steering device is arranged between the two diaphragm plates, so that an anchoring steering system has certain axial rigidity, shearing rigidity and bending rigidity, and has a better anchoring effect on an external prestressed beam; and moreover, the box girder structure can be processed and manufactured in a factory in advance, so that the quality control is facilitated, and the construction period is shortened.
As optimization, the steering device comprises a steel sleeve and a lining plastic pipe; the lining plastic pipe is arranged in the steel sleeve, and the outer side of the steel sleeve and the anchor backing plate are welded into a whole.
Therefore, the lining plastic pipe mainly plays a role in isolation, and the corrosion prevention function failure caused by the direct friction between the steel strand and the steel sleeve is prevented.
As optimization, a plurality of anchor bolts are arranged on the opposite sides of the two diaphragm plates, and the anchor bolts on each diaphragm plate correspond to one another; be equipped with the crossbeam reinforcing bar between two crab-bolts that correspond, the both ends of crossbeam reinforcing bar link to each other with the crab-bolt respectively.
Like this, realize the anchor through set up the crossbeam reinforcing bar between the crab-bolt that corresponds, directly make upper deck slab pressurized, reduce the tensile stress of hogging moment district upper deck slab.
As optimization, the upside of crossbeam reinforcing bar is equipped with door type reinforcing bar, two lower extremes of door type reinforcing bar all with the upside of crossbeam reinforcing bar is fixed continuous, the upside of door type reinforcing bar is higher than the upside of cross slab.
Therefore, the body door-shaped reinforcing steel bars are arranged on the upper sides of the cross beam reinforcing steel bars to strengthen anchoring, so that axial pressure generated by the external prestressed cables is transmitted to the upper-layer bridge deck from the door-shaped reinforcing steel bars, the upper-layer bridge deck is indirectly pressed, and the tensile stress of the upper-layer bridge deck in the hogging moment area is further reduced.
As optimization, the beam steel bar connecting structure further comprises connecting steel bars, wherein the connecting steel bars are horizontally arranged and are perpendicular to the beam steel bars, and the connecting steel bars penetrate through the inner sides of the door-shaped steel bars and are connected with the door-shaped steel bars.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
FIG. 1 is a schematic structural view of the box girder structure for an extra-corporeal cable of the present invention, when no cross beam is installed;
FIG. 2 is a schematic structural view of a beam reinforcement of the present invention;
fig. 3 is a schematic structural view of the steering apparatus of the present invention.
Reference numerals:
1-diaphragm plate, 2-anchor backing plate, 3-steering device, 31-steel sleeve, 32-lining plastic pipe, 4-spiral rib, 5-anchor bolt, 6-beam steel bar, 7-door steel bar, 8-connecting steel bar and 9-base steel plate.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Example (b): as shown in fig. 1 to 3, the present invention discloses a box girder structure for an external cable, including: base steel plate 9, diaphragm 1, anchor backing plate 2 and turn to device 3. Two diaphragm 1 sets up on the base steel sheet mutually, two all install on the relative one side of diaphragm 1 anchor backing plate 2 install spiral muscle 4 on the anchor backing plate 2, turn to device 3 and pass spiral muscle 4 anchor backing plate 2 and diaphragm 1.
The box girder structure of the application designs two diaphragm plates, an anchor backing plate and a spiral rib, and a steering device is arranged between the two diaphragm plates, so that an anchoring steering system has certain axial rigidity, shearing rigidity and bending rigidity, and has a better anchoring effect on an external prestressed beam; and moreover, the box girder structure can be processed and manufactured in a factory in advance, so that the quality control is facilitated, and the construction period is shortened.
Specifically, the steering device 3 includes a steel sleeve 31 and a lining plastic pipe 32. The lining plastic pipe 32 is arranged in the steel sleeve 313, and the outer side of the steel sleeve 1 and the anchor backing plate 2 are welded into a whole.
Therefore, the lining plastic pipe mainly plays a role in isolation, and the corrosion prevention function failure caused by the direct friction between the steel strand and the steel sleeve is prevented.
Specifically, a plurality of anchor bolts 5 are arranged on the opposite sides of the two diaphragm plates 1, and the anchor bolts 5 on each diaphragm plate 1 correspond to one another; be equipped with crossbeam reinforcing bar 6 between two crab-bolts 5 that correspond, the both ends of crossbeam reinforcing bar 6 link to each other with crab-bolt 5 respectively.
Like this, realize the anchor through set up the crossbeam reinforcing bar between the crab-bolt that corresponds, directly make upper deck slab pressurized, reduce the tensile stress of hogging moment district upper deck slab.
Specifically, the upside of crossbeam reinforcing bar 6 is equipped with door type reinforcing bar 7, two lower extremes of door type reinforcing bar 7 all with crossbeam reinforcing bar 6's upside is fixed continuous, the upside of door type reinforcing bar 7 is higher than the upside of cross slab 1.
Therefore, the body door-shaped reinforcing steel bars are arranged on the upper sides of the cross beam reinforcing steel bars to strengthen anchoring, so that axial pressure generated by the external prestressed cables is transmitted to the upper-layer bridge deck from the door-shaped reinforcing steel bars, the upper-layer bridge deck is indirectly pressed, and the tensile stress of the upper-layer bridge deck in the hogging moment area is further reduced.
Specifically, still include connecting reinforcement 8, connecting reinforcement 8 horizontal setting and with crossbeam reinforcing bar 6 is mutually perpendicular, connecting reinforcement 8 wears to put in the inboard of a plurality of door type reinforcing bars 7, and with door type reinforcing bar 7 links to each other.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention is described in detail with reference to the following embodiments, it should be understood by those skilled in the art that: the technical solutions described in the following embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (5)
1. The utility model provides an external case roof beam structure for cable which characterized in that includes: the device comprises a base steel plate, a transverse clapboard, an anchor backing plate and a steering device; the two diaphragm plates are arranged on the base steel plate alternately, the two diaphragm plates are arranged on the opposite sides of the two diaphragm plates, the anchor backing plate is provided with spiral ribs, and the steering device penetrates through the spiral ribs, the anchor backing plate and the diaphragm plates.
2. The box girder structure for the external cable according to claim 1, wherein the steering device comprises a steel sleeve and a lining plastic pipe; the lining plastic pipe is arranged in the steel sleeve, and the outer side of the steel sleeve and the anchor backing plate are welded into a whole.
3. The box girder structure for the external cables of claim 1, wherein a plurality of anchor bolts are installed on the opposite sides of the two diaphragm plates, and the anchor bolts on each diaphragm plate correspond to one another; be equipped with the crossbeam reinforcing bar between two crab-bolts that correspond, the both ends of crossbeam reinforcing bar link to each other with the crab-bolt respectively.
4. The box girder structure for the external cables of claim 3, wherein door-shaped reinforcing bars are provided on the upper sides of the beam reinforcing bars, both lower ends of the door-shaped reinforcing bars are fixedly connected to the upper sides of the beam reinforcing bars, and the upper sides of the door-shaped reinforcing bars are higher than the upper sides of the diaphragms.
5. The box girder structure for the external cables of claim 4, further comprising connecting bars horizontally disposed and perpendicular to the cross beam bars, the connecting bars being inserted into the inner sides of the plurality of gate bars and connected to the gate bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122374552.7U CN216379198U (en) | 2021-09-28 | 2021-09-28 | Box girder structure for external cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122374552.7U CN216379198U (en) | 2021-09-28 | 2021-09-28 | Box girder structure for external cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216379198U true CN216379198U (en) | 2022-04-26 |
Family
ID=81243717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122374552.7U Active CN216379198U (en) | 2021-09-28 | 2021-09-28 | Box girder structure for external cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216379198U (en) |
-
2021
- 2021-09-28 CN CN202122374552.7U patent/CN216379198U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101080534B (en) | Manufacturing method for prestressed steel composite girder | |
| US8266751B2 (en) | Method to compress prefabricated deck units by tensioning supporting girders | |
| CN203603029U (en) | Shearing force connecting piece and composite beam with same | |
| CN103590322A (en) | Shear force connecting part, combination beam comprising same and construction method of combination beam | |
| CN102021889A (en) | Bridge erection method | |
| CN216379198U (en) | Box girder structure for external cable | |
| CN211171558U (en) | Modular ultrahigh-performance concrete prefabricated assembled beam suitable for different spans | |
| CN210797872U (en) | Prefabricated reinforced concrete column | |
| CN109235235B (en) | Longitudinal connection method for main beams at continuous part of steel-concrete composite bridge deck | |
| CN110886185A (en) | Box girder with anchoring device and box girder bridge | |
| CN216640310U (en) | Transformation dangerous bridge transformation structure of T-shaped rigid frame system with hanging beam for common highway | |
| CN211645915U (en) | Prefabricated prestressed steel and concrete splicing simply-supported combined box girder | |
| CN211340374U (en) | Novel steel-concrete composite beam shear force connecting key | |
| CN214459551U (en) | Bolt welding type combined continuous beam between segments | |
| CN105648911B (en) | Bridge construction Cast-in-situ Beam, bent cap, binder concrete adhesion type prestressed girder support | |
| CN103911948A (en) | Transverse truss type structure applied to wide concrete rib plate beam and construction method of structure | |
| CN110055907B (en) | Concrete simply supported hollow slab beam carrying reinforcing structure | |
| CN108978490B (en) | Construction method of continuous beam-arch combined beam body and continuous beam-arch combined beam body | |
| CN113026555A (en) | Combined beam structure of prefabricated steel plate beam and combined bridge deck | |
| CN113481885A (en) | Construction method of I-shaped steel reinforcing beam for bridge | |
| CN112195751A (en) | Semi-penetrating type steel truss bridge | |
| CN110725216A (en) | Ultrahigh-performance concrete beam and construction method thereof | |
| CN220521087U (en) | Steel tube concrete anti-collision wall structure in hogging moment area of steel-concrete composite beam bridge | |
| KR20090084376A (en) | Composite girder used steel-concrete of continuous of prestress bridge and it's building method | |
| CN111424524A (en) | Modular ultrahigh-performance concrete prefabricated assembled beam suitable for different spans |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |