CN215366874U - Assembled adds establishes steel pipe truss and old concrete beam node structure - Google Patents
Assembled adds establishes steel pipe truss and old concrete beam node structure Download PDFInfo
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- CN215366874U CN215366874U CN202120253117.6U CN202120253117U CN215366874U CN 215366874 U CN215366874 U CN 215366874U CN 202120253117 U CN202120253117 U CN 202120253117U CN 215366874 U CN215366874 U CN 215366874U
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Abstract
The utility model relates to an assembled node structure with an additionally-arranged steel tube truss girder and an old concrete beam, which comprises an old concrete beam, a node steel framework, an upper steel plate and an additionally-arranged steel tube truss girder, wherein the old concrete beam penetrates through the node steel framework, and the side surface of the node steel framework is fixedly connected with the longitudinally-arranged additionally-arranged steel tube truss girder; the upper steel plate is arranged on the top surface of the old concrete beam and fixedly connected with the upper end of the node steel framework. The node structure enables the additionally arranged steel pipe trussed beams and the old concrete cross beams to form integral common stress, improves the integral rigidity of the bridge system, enables the stress distribution of the suspension rods to be more uniform, and improves the driving comfort level; the node steel skeleton, the upper steel plate, the additionally arranged steel pipe truss girder and the like are prefabricated in a factory, hoisted on site and connected through bolts to form an assembled node structure, so that the assembled line production is realized during construction, the construction process is simplified, the construction period is shortened, the influence of adverse factors on site is eliminated, and the construction quality is ensured.
Description
The technical field is as follows:
the utility model relates to an assembled node structure additionally provided with a steel pipe truss girder and an old concrete beam.
Background art:
the built through-type arch bridge is mostly a floating system, namely, the upper end of a suspender is fixed on an arch rib structure, the lower end of the suspender is used for pulling a concrete beam, and a bridge deck is paved on the top of the concrete beam in a simple support or fixed constraint mode. The hanger rod structure needs a hanger rod replacement project after a certain using time due to safety consideration; meanwhile, the bridge structure and bridge system has poor overall performance due to the fact that longitudinal connection is lacked among the concrete cross beams. The steel pipe truss girder has the advantages of light structure dead weight, high structural rigidity and the like. For a large number of existing arch bridges of this kind, the integrity of the bridge and road system is improved by additionally arranging the steel tube longitudinal trussed beams and connecting the old concrete cross beams, so that the method is an effective method for enhancing the safety and comfort of the structure and ensuring the durability of the bridge. But the reliability of the construction of the connection node between the longitudinal and transverse beams is a key issue. The scheme is generated accordingly.
The utility model has the following contents:
the utility model aims at solving the problems existing in the prior art, namely, the utility model aims to provide a node structure for assembling an additionally-arranged steel tube truss girder and an old concrete beam.
In order to achieve the purpose, the utility model adopts the technical scheme that: a fabricated node structure with additional steel tube trussed beams and old concrete beams comprises old concrete beams, a node steel framework, an upper steel plate and additional steel tube trussed beams, wherein the old concrete beams penetrate through the node steel framework, and the side faces of the node steel framework are fixedly connected with the additional steel tube trussed beams which are longitudinally arranged; the upper steel plate is arranged on the top surface of the old concrete beam and fixedly connected with the upper end of the node steel framework.
Furthermore, the node steel skeleton comprises two side steel plates which are arranged on the left side and the right side of the old concrete beam in parallel, the upper ends of the two side steel plates are respectively and fixedly connected with an upper chord connecting steel pipe which is longitudinally arranged, a lower chord connecting steel pipe which is longitudinally arranged is fixedly penetrated between the lower ends of the two side steel pipes, and the upper chord connecting steel pipe and the lower chord connecting steel pipe are respectively and fixedly connected with an additionally arranged steel pipe truss girder.
Furthermore, a first connecting end plate is fixedly connected to one end face, far away from the old concrete beam, of the upper chord connecting steel pipe and the lower chord connecting steel pipe, a second connecting end plate is fixedly connected to one end, close to the side steel plate, of the steel pipe truss girder, and the first connecting end plate and the second connecting end plate are fixedly connected through a plurality of first bolts.
Furthermore, go up the steel sheet and be the U type form, go up the both sides limit of steel sheet and be connected fixedly through the second bolt of a plurality of transverse distribution with the upper end of side steel sheet.
Furthermore, a lower steel plate is fixedly connected between the lower ends of the two side steel plates.
Furthermore, a plurality of stiffening steel plates which are annularly and uniformly distributed are fixedly connected between the peripheral wall of the upper chord connecting steel pipe and the side steel plates and between the peripheral walls of the two ends of the lower chord connecting steel pipe and the side steel plates.
Furthermore, a plurality of circular stirrups of the sidewalk plate beam are pre-welded on the top end of the upper steel plate along the transverse direction, and the circular stirrups of the sidewalk plate beam are vertically arranged.
Furthermore, epoxy mortar is injected into a gap between the joint steel skeleton and the old concrete beam at high pressure for filling.
Furthermore, the upper steel plate is provided with a connecting round hole used for being connected with the suspender guide pipe.
Compared with the prior art, the utility model has the following effects:
(1) the node structure enables the additionally arranged steel pipe trussed beams and the old concrete cross beams to form integral common stress, improves the integral rigidity of the bridge system, enables the stress distribution of the suspension rods to be more uniform, and improves the driving comfort level;
(2) the lower chord connecting pipe which is longitudinally communicated is effectively connected with each old concrete beam to participate in common stress, the structural robustness is improved, the accidental breakage of a single suspender is avoided, and the bridge deck structure falls under a bridge;
(3) the node steel skeleton, the upper steel plate, the additionally arranged steel pipe truss girder and the like are prefabricated in a factory, hoisted on site and connected through bolts to form an assembled node structure, so that the assembled line production is realized during construction, the construction process is simplified, the construction period is shortened, the influence of adverse factors on site is eliminated, and the construction quality is ensured.
Description of the drawings:
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of the embodiment of the utility model when the node steel skeleton is hoisted in place;
FIG. 3 is a schematic view of the structure of FIG. 2 in which the upper steel plate is connected to the joint steel skeleton;
FIG. 4 is a schematic view of the upper steel plate of FIG. 3 after welding the hoop reinforcement of the sidewalk plate beam;
fig. 5 is a schematic structural view of the steel pipe truss beam and the node steel framework in fig. 4 after being connected.
In the figure:
1, steel plate feeding; 2, arranging a steel plate; 3-side steel plates; 4-connecting the steel pipe with the lower chord; 5-a first connecting end plate; 6-connecting steel pipes in a winding mode; 7-a second connection end plate; 8-stiffening steel plates; 9-a second bolt; 10-a first bolt; 11-additionally arranging a steel pipe truss girder; 12-old concrete beam; 13-a pavement slab beam hoop reinforcement; 14-node steel skeleton.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1 to 5, the assembled node structure of the additionally-arranged steel tube trussed beam and the old concrete beam comprises an old concrete beam 12, a node steel framework 14, an upper steel plate 1 and an additionally-arranged steel tube trussed beam 11, wherein the old concrete beam 12 penetrates through the inside of the node steel framework 14, and the side surface of the node steel framework 14 is fixedly connected with the longitudinally-arranged additionally-arranged steel tube trussed beam 11; the upper steel plate 1 is arranged on the top surface of the old concrete beam 12 and is fixedly connected with the upper end of the node steel framework 14.
In this embodiment, the node steel framework 14 includes two side steel plates 3 disposed on the left and right sides of the old concrete beam 12 in parallel, the upper ends of the two side steel plates 3 are respectively welded with an upper chord connecting steel tube 6 disposed longitudinally, a lower chord connecting steel tube 4 disposed longitudinally is fixedly penetrated between the lower ends of the two side steel tubes 3, the upper chord connecting steel tube 6 and the lower chord connecting steel tube 4 are both perpendicular to the side steel plates 3, and the upper chord connecting steel tube 6 and the lower chord connecting steel tube 4 are respectively fixedly connected with the steel tube trussed beam 11. Preferably, the upper chord connecting steel pipe 6 is directly welded on the side plate steel plate 3, the side plate steel plate 3 is reserved in a factory for facilitating a cavity through which the lower chord connecting steel pipe 4 penetrates, and the intersection of the upper chord connecting steel pipe 6 and the side plate 3 and the intersection of the lower chord connecting steel pipe 4 and the side plate 3 are all welded in the circumferential direction.
In this embodiment, a square first connection end plate 5 is welded to one end face, away from the old concrete beam 12, of the upper chord connection steel pipe 6 and the lower chord connection steel pipe 4, a square second connection end plate 7 is welded to one end, close to the side steel plate 3, of the steel pipe truss 11, and the first connection end plate 5 and the second connection end plate 7 are fixedly connected through a plurality of first bolts 10.
In this embodiment, the upper steel plate 1 is U-shaped, and both sides of the upper steel plate 1 are connected and fixed to the upper ends of the side steel plates 3 by a plurality of second bolts 9 distributed transversely.
In this embodiment, in order to improve the structural strength of the joint steel skeleton, a lower steel plate 2 horizontally arranged is fixedly connected between the lower ends of the two side steel plates 3.
In this embodiment, between the periphery wall of the upper chord steel pipe 6 and the side steel plate 3, and between the periphery wall of the two ends of the lower chord steel pipe 4 and the side steel plate 3, a plurality of stiffening steel plates 8 which are annularly and uniformly distributed are welded to improve the structural strength of the lower chord steel pipe and the upper chord steel pipe.
In this embodiment, go up 1 top of steel sheet and along horizontal prewelding a plurality of people's walk slab beam hoop stirrup 13, people's walk slab beam hoop stirrup vertical setting is convenient for pour the people's walk slab crossbeam and is linked as an organic whole after.
In this embodiment, epoxy mortar is injected into the gap between the joint steel skeleton 14 and the old concrete beam 12 under high pressure to fill the gap.
In this embodiment, the upper steel plate 1 is provided with a connecting circular hole for being connected with the boom guide pipe, and the diameter of the connecting circular hole is slightly larger than that of the boom guide pipe.
In this embodiment, the steel pipe trussed beam 11, the node steel skeleton 14, and the upper steel plate 1 are all prefabricated in a factory.
In this embodiment, the plane position of the lower chord connecting steel pipe 4 of the node steel framework 14 should avoid the lower anchor socket structure of the suspension rod.
In the embodiment, each side steel plate is connected with two upper chord connecting steel pipes which are distributed along the transverse direction; the two lower chord connecting steel pipes are also distributed along the transverse direction. It should be noted that the number of the upper chord connecting steel pipes and the lower chord connecting steel pipes can be set according to the requirement; meanwhile, in the actual construction process, the number of the node structures of the steel pipe trussed beams and the old concrete beam additionally arranged in the whole assembly type is set according to the requirement.
In this embodiment, the construction method for the fabricated additional steel pipe truss girder and old concrete beam node structure includes the following steps:
(1) removing the sidewalk slab on the old concrete beam, temporarily removing the suspender, arranging a temporary support and other safety measures, measuring the actual distance between the old concrete beams, and prefabricating and additionally arranging a steel pipe truss beam and a node steel framework in a factory;
(2) the node steel frame 14 is hoisted to a designed position from the lower part of the old concrete beam 12 upwards, and the upper steel plate 1 and the side steel plate 3 of the node steel frame 14 are connected through a second bolt 9;
(3) epoxy mortar is injected into a gap between the joint steel skeleton 14 and the old concrete beam 12 at high pressure for leveling;
(4) hoisting the steel pipe truss girder 11, and connecting a second connecting end plate 7 at the end part of the steel pipe truss girder 11 with a first connecting end plate 5 on a node steel framework 14 through a first bolt 10;
(5) and (5) reinstalling the suspender and the concrete sidewalk slab to be in place to complete the construction of the connecting joint.
If the utility model discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the utility model can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the utility model or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.
Claims (9)
1. The utility model provides an assembled adds establishes steel pipe truss and old concrete beam node structure which characterized in that: the steel tube truss combined type concrete beam comprises an old concrete beam, a node steel framework, an upper steel plate and an additionally arranged steel tube truss beam, wherein the old concrete beam penetrates through the node steel framework, and the side surface of the node steel framework is fixedly connected with the longitudinally arranged additionally arranged steel tube truss beam; the upper steel plate is arranged on the top surface of the old concrete beam and fixedly connected with the upper end of the node steel framework.
2. The fabricated node structure of the steel tube truss girder and the old concrete beam additionally arranged according to claim 1, which is characterized in that: the node steel skeleton comprises two side steel plates which are arranged on the left side and the right side of the old concrete beam in parallel, the upper ends of the two side steel plates are fixedly connected with longitudinally arranged upper chord connecting steel tubes respectively, longitudinally arranged lower chord connecting steel tubes are fixedly penetrated between the lower ends of the two side steel tubes, and the upper chord connecting steel tubes and the lower chord connecting steel tubes are fixedly connected with additionally arranged steel tube trusses respectively.
3. The fabricated node structure of additionally-arranged steel tube trussed beams and old concrete cross beams according to claim 2, characterized in that: the steel pipe truss is characterized in that a first connecting end plate is fixedly connected to one end face, far away from an old concrete beam, of the upper chord connecting steel pipe and the lower chord connecting steel pipe, a second connecting end plate is fixedly connected to one end, close to the side steel plate, of the steel pipe truss, and the first connecting end plate and the second connecting end plate are fixedly connected through a plurality of first bolts.
4. The fabricated node structure of additionally-arranged steel tube trussed beams and old concrete cross beams according to claim 2, characterized in that: the upper steel plate is U-shaped, and two side edges of the upper steel plate are fixedly connected with the upper ends of the side steel plates through a plurality of transversely distributed second bolts.
5. The fabricated node structure of additionally-arranged steel tube trussed beams and old concrete cross beams according to claim 2, characterized in that: a lower steel plate is fixedly connected between the lower ends of the two side steel plates.
6. The fabricated node structure of additionally-arranged steel tube trussed beams and old concrete cross beams according to claim 2, characterized in that: and stiffening steel plates with a plurality of annular uniform distributions are fixedly connected between the peripheral wall of the upper chord connecting steel pipe and the side steel plates and between the peripheral walls of the two ends of the lower chord connecting steel pipe and the side steel plates.
7. The fabricated node structure of the steel tube truss girder and the old concrete beam additionally arranged according to claim 1, which is characterized in that: the top end of the upper steel plate is pre-welded with a plurality of circumferential stirrups of the sidewalk plate beam along the transverse direction, and the circumferential stirrups of the sidewalk plate beam are arranged vertically.
8. The fabricated node structure of the steel tube truss girder and the old concrete beam additionally arranged according to claim 1, which is characterized in that: and epoxy mortar is injected into the gap between the joint steel skeleton and the old concrete beam at high pressure for leveling.
9. The fabricated node structure of the steel tube truss girder and the old concrete beam additionally arranged according to claim 1, which is characterized in that: and the upper steel plate is provided with a connecting round hole for connecting with the suspender guide pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120253117.6U CN215366874U (en) | 2021-01-29 | 2021-01-29 | Assembled adds establishes steel pipe truss and old concrete beam node structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120253117.6U CN215366874U (en) | 2021-01-29 | 2021-01-29 | Assembled adds establishes steel pipe truss and old concrete beam node structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215366874U true CN215366874U (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120253117.6U Active CN215366874U (en) | 2021-01-29 | 2021-01-29 | Assembled adds establishes steel pipe truss and old concrete beam node structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215366874U (en) |
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2021
- 2021-01-29 CN CN202120253117.6U patent/CN215366874U/en active Active
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