CN217196071U - Bridge deck pretensioning prefabricating pedestal - Google Patents
Bridge deck pretensioning prefabricating pedestal Download PDFInfo
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- CN217196071U CN217196071U CN202220117269.8U CN202220117269U CN217196071U CN 217196071 U CN217196071 U CN 217196071U CN 202220117269 U CN202220117269 U CN 202220117269U CN 217196071 U CN217196071 U CN 217196071U
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Abstract
The utility model relates to a bridge construction technical field, in particular to deck slab pretensioning prefabrication pedestal, include: a pedestal main body; two movable cross beams respectively arranged at two opposite ends of the pedestal main body; the two groups of tensioning pieces are respectively connected to two ends of the pedestal main body so as to drive the movable cross beam to be close to or far away from the pedestal main body along the length direction of the pedestal main body; two sets of screw-thread steel pole, it is followed respectively the length direction of pedestal main part wears to locate the relative both sides wall of pedestal main part, the screw-thread steel pole with movable cross beam connects, and is two sets of the screw-thread steel pole is the one-to-one respectively, and is used for connecting the both ends of steel strand wires respectively, the screw-thread steel pole follows movable cross beam keeps away from pedestal main part and stretch-draw steel strand wires. The method and the device have the advantages of reducing the construction difficulty, improving the construction safety and reducing the construction cost.
Description
Technical Field
The application relates to the technical field of bridge construction, in particular to a deck slab pre-tensioning prefabricating pedestal.
Background
At present, the steel-concrete composite bridge is widely applied to bridges, has the advantages of convenience and quickness in construction, strong integrity, good economic benefit and the like, and is suitable for large-span bridges across rivers, rivers and the like.
In the related art, the ultra-thin bridge deck is suitable for bridges with large span, and a pretensioning method tensioning process is generally adopted for reinforcing the ultra-thin bridge deck to ensure the integrity of the ultra-thin bridge deck. When the tensioning process is used for reinforcement, the steel strand is usually pulled in opposite directions in the length direction of the pedestal, so that the steel strand is straightened, and two ends of the steel strand are respectively fixed with two ends of the pedestal.
However, after the steel strand wires are straightened, the construction difficulty of fixing the steel strand wires and the pedestal is high, safety risks exist, meanwhile, the length of the steel strand wires after being straightened exceeds the length of the pedestal, the number of the required steel strand wires is large, the length of each steel strand wire exceeding the pedestal needs to be reserved, and therefore waste of steel strand wire materials is caused.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a deck slab pretensioning prefabrication pedestal to it is high to solve the steel strand wires direct fixation construction degree of difficulty among the correlation technique, and the security is poor, and causes the technical problem of the waste of steel strand wires material easily.
A deck pretensioned prefabrication platform comprising:
a pedestal main body;
two movable cross beams respectively arranged at two opposite ends of the pedestal main body;
the two groups of tensioning pieces are respectively connected to two ends of the pedestal main body so as to drive the movable cross beam to be close to or far away from the pedestal main body along the length direction of the pedestal main body;
two sets of screw-thread steel pole, it is followed respectively the length direction of pedestal main part wears to locate the relative both sides wall of pedestal main part, the screw-thread steel pole with movable cross beam connects, and is two sets of the screw-thread steel pole is the one-to-one respectively, and is used for connecting the both ends of steel strand wires respectively, the screw-thread steel pole follows movable cross beam keeps away from pedestal main part and stretch-draw steel strand wires.
In some embodiments, the pedestal body comprises:
two parallel compression bar beams;
two stretch-draw crossbeams, two the stretch-draw crossbeam is located respectively the both ends of depression bar roof beam, and two the terminal surface of depression bar roof beam all with the depression bar roof beam is connected, the screw-thread steel pole is worn to locate stretch-draw crossbeam sets up.
In some embodiments, the pedestal main body further includes a plurality of bracing systems, the bracing systems being arranged at intervals, each bracing system being connected to the bottom surfaces of the two compression bar beams.
In some embodiments, the length direction of the bracing system is arranged perpendicular to the length direction of the compression bar beam.
In some embodiments, the tensioning beams are arranged in a box beam shape, and a plurality of stiffening plates are arranged inside the tensioning beams.
In some embodiments, the deck slab pre-tensioning pedestal further comprises a plurality of first nuts, wherein the first nuts are connected to the threaded steel rod in a threaded manner, and the first nuts abut against the outer side surface of the pedestal main body so as to limit the threaded steel rod from sliding towards the middle of the pedestal main body.
In some embodiments, the tensioning member includes a jack, a fixed end of the jack is connected to the pedestal main body, and a movable end of the jack is connected to the movable cross member.
In some embodiments, the deck slab pre-tensioning pedestal further includes a plurality of second nuts, the threaded steel rod is disposed through the movable cross beam, the second nuts are connected to the threaded steel rod in a threaded manner, and the second nuts abut against a side surface of the movable cross beam, which faces away from the pedestal main body.
In some embodiments, the base main body further includes a base bottom mold connected to the top surfaces of the plurality of coupling systems, and the base bottom mold is configured to connect to and support a bridge deck bottom mold.
In some embodiments, the main body further includes a plurality of hydraulic cylinders located at opposite sides of the bottom die, fixed ends of the hydraulic cylinders are connected to the coupling system, and movable ends of the hydraulic cylinders are used for supporting the bridge deck side die.
The technical scheme who provides this application brings beneficial effect includes:
the embodiment of the application provides a deck slab pretensioning prefabricated pedestal, because the setting of movable beam and screw-thread steel pole, the tensioning piece drives movable beam and keeps away from when pedestal main part removes, drive the screw-thread steel pole simultaneously and remove, with this through screw-thread steel pole tensioning steel strand wires, on the one hand steel strand wires all are connected with the screw-thread steel pole before the tensioning with after the tensioning, steel strand wires need not to fix once more after the tensioning, the construction degree of difficulty has been reduced, the potential safety hazard that exists when avoiding fixed straightening back steel strand wires, on the other hand, steel strand wires and fixed back of screw-thread steel pole, can make the length of steel strand wires be shorter than the length of pedestal main part slightly, therefore, the steel strand wires material has been saved, construction cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and 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 to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a deck slab pre-tensioning fabrication pedestal according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of a longitudinal section of a pre-tensioned deck slab foundation according to an embodiment of the present disclosure;
fig. 3 is a schematic view of a transverse cross section of a deck slab pre-tensioning pedestal according to an embodiment of the present application.
In the figure: 1. a compression bar beam; 2. tensioning the cross beam; 3. a linking system; 4. a movable cross beam; 5. a tension member; 6. a deformed steel bar; 7. steel strand wires; 8. a first nut; 9. a second nut; 10. a hydraulic cylinder; 11. a pedestal bottom die.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a deck slab pretensioning prefabrication pedestal, which can solve the technical problems that in the related art, the steel strand direct fixation construction difficulty is high, the safety is poor, and the waste of steel strand materials is easily caused.
A deck pretensioned prefabrication platform comprising:
a pedestal main body;
two movable cross beams 4 respectively arranged at two opposite ends of the pedestal main body;
two groups of tension pieces 5 which are respectively connected to two ends of the pedestal main body so as to drive the movable cross beam 4 to approach or leave the pedestal main body along the length direction of the pedestal main body;
two sets of screw-thread steel pole 6, it is followed respectively the length direction of pedestal main part is worn to locate pedestal main part's relative both sides wall, screw-thread steel pole 6 with movable cross beam 4 is connected, and is two sets of screw-thread steel pole 6 is the one-to-one respectively, and is used for connecting the both ends of steel strand wires 7 respectively, screw-thread steel pole 6 follows movable cross beam 4 keeps away from pedestal main part and stretch-draw steel strand wires 7.
Referring to fig. 1, the deck slab pre-tensioning prefabrication pedestal comprises a pedestal main body, two movable cross beams 4, two groups of tensioning pieces 5 and two groups of threaded steel rods 6.
Referring to fig. 1, the pedestal main body is provided in a square frame shape, and the two movable beams 4 are respectively provided at both ends of the pedestal main body and leave a gap with the outer side surface of the pedestal main body. The length direction of the movable cross member 4 coincides with the width direction of the pedestal main body. Two sets of tensioning members 5 are respectively arranged at two ends of the pedestal main body, and the number of the tensioning members 5 in each set of tensioning members 5 is a plurality, preferably 4 in the embodiment. The fixed ends of the four tension members 5 are installed on the outer end face of the pedestal main body, and the movable end of the tension member 5 is connected with the movable beam 4, so that the tension member 5 drives the movable beam 4 to move close to or away from the pedestal main body.
Referring to fig. 1, the length direction of two sets of deformed steel bar 6 is unanimous with the length direction of pedestal main body, and the relative both sides face of pedestal main body is located respectively to two sets of deformed steel bar 6, and deformed steel bar 6 wears to locate the lateral wall of pedestal main body perpendicularly. The deformed steel bar 6 is finish-rolled deformed steel. Each set of deformed steel bar 6 includes a plurality of deformed steel bar 6, and the one-to-one setting of two sets of deformed steel bar 6, is located a deformed steel bar 6 of pedestal main part one end promptly, and a deformed steel bar 6 that is located the pedestal main part other end is on same straight line. The deformed steel bar 6 is used for connecting the steel strand 7, and in the embodiment, the steel strand 7 is fixed at one end of the deformed steel bar 6 through a connector. The two ends of the steel strand 7 are respectively fixed on the deformed steel bars 6 at the two ends of the pedestal main body. Therefore, the steel strand 7 can be tensioned or the steel strand 7 can be loosened by driving the deformed steel bar 6 to slide.
Referring to fig. 1, the deformed steel bars 6 at the two ends of the pedestal main body are respectively connected with the movable cross beams 4 at the two ends of the pedestal, so that the movable cross beams 4 can be driven to move along with the tensioning piece 5, and the deformed steel bars 6 are driven to move so as to tension the steel strand 7.
Set up like this, because movable beam 4 and deformed steel bar 6's setting, stretch-draw piece 5 drives movable beam 4 and keeps away from the pedestal main part and removes, drive deformed steel bar 6 simultaneously and remove, pass through deformed steel bar 6 stretch-draw steel strand wires 7 with this, on the one hand, steel strand wires 7 all are connected with deformed steel bar 6 before the stretch-draw after with the stretch-draw, steel strand wires 7 need not to fix once more after the stretch-draw, the construction degree of difficulty has been reduced, the potential safety hazard that exists when avoiding fixed stretch-out back steel strand wires 7, on the other hand, steel strand wires 7 and the fixed back of deformed steel bar 6, can make the length of steel strand wires 7 be short in the length of pedestal main part slightly, therefore, steel strand wires 7 materials have been saved, construction cost is reduced.
Optionally, the pedestal body comprises:
two parallel compression bar beams 1;
two stretch-draw crossbeams 2, two stretch-draw crossbeam 2 is located respectively the both ends of compression bar roof beam 1, and two the terminal surface of compression bar roof beam 1 all with compression bar roof beam 1 is connected, threaded steel pole 6 is worn to locate stretch-draw crossbeam 2 sets up.
Referring to fig. 1, the pedestal main body includes two parallel compression bar beams 1 and two parallel tension cross beams 2, and the two compression bar beams 1 and the two tension cross beams 2 form a square frame structure. The length direction of the compression bar beam 1 is the length direction of the pedestal main body, and the length direction of the tension cross beam 2 is the width direction of the pedestal main body. Two ends of the pressure bar beam 1 are respectively connected with the two tensioning cross beams 2. In this embodiment, the compression bar beam 1 is a poured reinforced concrete structure, and an embedded part is embedded in an end surface of the compression bar beam 1. The tensioning cross beam 2 is a steel piece, and the compression bar beam 1 and the tensioning cross beam 2 are welded and fixed.
In this embodiment, the tension member 5 is fixed to the side surface of the tension beam 2, the fixed end of the tension member 5 can be fixed to the tension beam 2 by welding or bolting, and the threaded steel pipe penetrates through the tension beam 2.
Optionally, the pedestal main body further comprises a plurality of bracing systems 3, the bracing systems 3 are arranged at intervals, and each bracing system 3 is connected with the bottom surfaces of the two compression bar beams 1.
Alternatively, the length direction of the bracing system 3 is arranged perpendicular to the length direction of the compression bar beam 1.
Referring to fig. 1 and 2, the pedestal main body includes a plurality of bracing systems 3, and the length direction of the bracing systems 3 is perpendicular to the length direction of the strut beam 1. A plurality of connecting systems 3 are arranged at even intervals, and the connecting systems 3 are formed by pouring concrete. The two compression bar beams 1 are respectively arranged near two ends of the connecting system 3, the bottom surface of the compression bar beam 1 is connected with the top surface of the connecting system 3, and the compression bar beam 1 is supported by the connecting system 3.
With this arrangement, the bracing system 3 supports the strut beam 1 on the one hand, and since it is connected to the strut beam 1 on the other hand, the degree of freedom of the strut beam 1 is reduced, and the stability of the strut beam 1 is enhanced, thereby facilitating the maintenance of the shape of the pedestal main body.
Optionally, the tensioning cross beam 2 is arranged in a box beam shape, and a plurality of stiffening plates are arranged inside the tensioning cross beam 2.
Wherein, stretch-draw crossbeam 2 is the steel component, and is the setting of box girder construction, sets up a plurality of through-holes that supply screw-thread steel pole 6 to pass on the stretch-draw crossbeam 2. In order to improve the structural strength of the tension beam 2, a plurality of stiffening plates are welded and fixed inside the tension beam 2.
Optionally, the deck slab pre-tensioning pedestal further comprises a plurality of first nuts 8, the first nuts 8 are screwed on the threaded steel rod 6, and the first nuts 8 abut against the outer side surface of the pedestal main body to limit the threaded steel rod 6 from sliding towards the middle of the pedestal main body.
Referring to fig. 1, each of the deformed steel bars 6 is sleeved with a first nut 8, and the first nut 8 is in threaded connection with the deformed steel bar 6. The first nut 8 may abut against the outer side surface of the base main body, that is, the side surface of the tension beam 2. After the steel strand 7 is tensioned along with the sliding of the threaded steel rod 6, the first nut 8 is moved to abut against the outer side surface of the pedestal main body, and under the action of the first nut 8, the self tension force of the steel strand 7 is limited to drive the threaded steel rod 6 to move towards the middle of the pedestal main body, so that the tensioning state of the steel strand 7 is maintained conveniently.
Optionally, the tensioning member 5 includes a jack, a fixed end of the jack is connected to the pedestal main body, and a movable end of the jack is connected to the movable cross beam 4.
Referring to fig. 1, in the present embodiment, the tensioning member 5 includes a jack, and in other embodiments, the tensioning member 5 may also be another power member such as a cylinder. The fixed end of the tension member 5 is fixed on the side surface of the tension beam 2 through a bolt or welding, the movable end of the tension member 5 is fixed with the side surface of the movable beam 4, and the running direction of the movable end of the tension member 5 is consistent with the length direction of the pedestal main body. In this embodiment, each end of the pedestal main body is provided with four jacks.
Optionally, the deck slab pre-tensioning pedestal further comprises a plurality of second nuts 9, the threaded steel rod 6 penetrates through the movable cross beam 4, the second nuts 9 are connected to the threaded steel rod 6 in a threaded manner, and the second nuts 9 abut against the side surface of the movable cross beam 4 away from the pedestal main body.
Referring to fig. 1, wherein, the threaded steel rod 6 is arranged through the movable cross beam 4, a second nut 9 is sleeved on each threaded steel rod 6, the second nut 9 is in threaded connection with the threaded steel rod 6, and the second nut 9 is located on the side surface of the movable cross beam 4 departing from the pedestal main body. When the tensioning piece 5 pushes the movable cross beam 4 to move away from the pedestal main body, the movable cross beam 4 drives the threaded steel rod 6 to slide by pushing the second nut 9 so as to tension the steel strand 7.
Optionally, the pedestal main body further includes a pedestal bottom die 11, the pedestal bottom die 11 is connected to a plurality of top surfaces of the coupling system 3, and the pedestal bottom die 11 is used for connecting and supporting the bridge deck bottom die.
Referring to fig. 1 and 3, the pedestal main body further includes a pedestal bottom mold 11, and the pedestal bottom mold 11 is formed by pouring concrete, and has a length direction corresponding to a length direction of the strut beam 1. The bottom surface of the base mold 11 is connected to the top surface of the plurality of connecting systems 3, and the plurality of connecting systems 3 support the base mold 11. The bed bottom die 11 is used to support a bridge deck bottom die, and in this embodiment, the bridge deck bottom die is welded and fixed on the bed bottom die 11 to limit the relative movement between the bridge deck bottom die and the bed bottom die 11.
Optionally, the pedestal main body further includes a plurality of hydraulic cylinders 10, the hydraulic cylinders 10 are located on two opposite sides of the pedestal bottom die 11, a fixed end of the hydraulic cylinder 10 is connected to the connecting system 3, and a movable end of the hydraulic cylinder 10 is used for supporting the bridge deck side die.
Referring to fig. 3, in some embodiments, the bench main body further includes a plurality of hydraulic cylinders 10, and the plurality of hydraulic cylinders 10 are uniformly distributed on two opposite sides of the bench bottom mold 11. The fixed end of the hydraulic cylinder 10 is fixed on the bottom surface of the connecting system 3 through bolts or welding, while the movable end of the hydraulic cylinder 10 is used for supporting the bridge deck side die, in the embodiment, the movable end of the hydraulic cylinder 10 is fixed on the bridge deck side die through welding, and the position of the bridge deck side die is convenient to finely adjust through the hydraulic cylinder 10.
In other embodiments, the hydraulic cylinder 10 may be fixed to the bridge deck side form to facilitate the installation and removal of the bridge deck side form.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A deck pretensioned prefabrication platform, comprising:
a pedestal main body;
two movable cross beams (4) respectively arranged at two opposite ends of the pedestal main body;
two groups of tensioning pieces (5) are respectively connected to two ends of the pedestal main body so as to drive the movable cross beam (4) to be close to or far away from the pedestal main body along the length direction of the pedestal main body;
two sets of screw-thread steel pole (6), it is followed respectively the length direction of pedestal main part is worn to locate the relative both sides wall of pedestal main part, screw-thread steel pole (6) with movable cross beam (4) are connected, and are two sets of screw-thread steel pole (6) are the one-to-one respectively, and are used for connecting the both ends of steel strand wires (7) respectively, screw-thread steel pole (6) are followed movable cross beam (4) are kept away from pedestal main part and stretch-draw steel strand wires (7).
2. A deck pretensioned prefabrication deck according to claim 1 wherein said deck body includes:
two parallel compression bar beams (1);
two stretch-draw crossbeams (2), two stretch-draw crossbeam (2) are located respectively the both ends of depression bar roof beam (1), and two the terminal surface of depression bar roof beam (1) all with depression bar roof beam (1) is connected, threaded steel pole (6) are worn to locate stretch-draw crossbeam (2) set up.
3. Bridge deck pre-tensioning pedestal according to claim 2, wherein the pedestal main body further comprises a plurality of bracing systems (3), the bracing systems (3) are arranged at intervals, and each bracing system (3) is connected with the bottom surfaces of two compression bar beams (1).
4. Bridge deck pretensioned prefabrication platform according to claim 3, wherein the length direction of the bracing system (3) is arranged perpendicular to the length direction of the compression bar beam (1).
5. Deck slab pre-tensioning pedestal according to claim 2, characterized in that the tensioning beams (2) are arranged in the shape of a box beam, and a plurality of stiffening plates are arranged inside the tensioning beams (2).
6. Deck slab pre-tensioning pedestal according to claim 1, further comprising a plurality of first nuts (8), wherein the first nuts (8) are screwed to the threaded steel rod (6), and the first nuts (8) abut against the outer side surface of the pedestal body to limit the threaded steel rod (6) from sliding towards the middle of the pedestal body.
7. Deck pretensioner prefabrication platform according to claim 1, wherein the tensioning member (5) comprises a jack, the fixed end of which is connected to the platform body and the movable end of which is connected to the movable beam (4).
8. Deck slab pre-tensioning pedestal according to claim 1, further comprising a plurality of second nuts (9), wherein the threaded steel rod (6) is arranged through the movable cross beam (4), the second nuts (9) are connected to the threaded steel rod (6) in a threaded manner, and the second nuts (9) abut against the side of the movable cross beam (4) facing away from the pedestal body.
9. Deck slab pre-tensioning foundation according to claim 3, characterized in that the foundation body further comprises a foundation bed (11) connected to the top surfaces of the plurality of bracing systems (3), and the foundation bed (11) is used to connect and support the deck slab bed.
10. Deck pre-tensioning pedestal according to claim 9, wherein the pedestal main body further comprises a plurality of hydraulic cylinders (10), the hydraulic cylinders (10) are located on two opposite sides of the pedestal bottom die (11), the fixed ends of the hydraulic cylinders (10) are connected to the coupling system (3), and the movable ends of the hydraulic cylinders (10) are used for supporting the deck side dies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220117269.8U CN217196071U (en) | 2022-01-13 | 2022-01-13 | Bridge deck pretensioning prefabricating pedestal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220117269.8U CN217196071U (en) | 2022-01-13 | 2022-01-13 | Bridge deck pretensioning prefabricating pedestal |
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| CN217196071U true CN217196071U (en) | 2022-08-16 |
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| CN202220117269.8U Active CN217196071U (en) | 2022-01-13 | 2022-01-13 | Bridge deck pretensioning prefabricating pedestal |
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