CN210368626U - Guardrail is assembled to precast concrete - Google Patents
Guardrail is assembled to precast concrete Download PDFInfo
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- CN210368626U CN210368626U CN201920722168.1U CN201920722168U CN210368626U CN 210368626 U CN210368626 U CN 210368626U CN 201920722168 U CN201920722168 U CN 201920722168U CN 210368626 U CN210368626 U CN 210368626U
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Abstract
The utility model provides a guardrail is assembled to precast concrete relates to a public road bridge roof beam guardrail equipment. The problems that the installation process of the precast concrete guardrail is complex and the quality is poor in the prior art are solved. This guardrail is assembled to precast concrete, including precast concrete guardrail, beam slab, the groove is watered after precast concrete guardrail bottom and beam slab flange board concatenation department reserve the concrete, pre-buried first reinforcing bar circle in the precast concrete guardrail, the part circle body of first reinforcing bar circle spills down and waters groove department behind the concrete, pre-buried second reinforcing bar circle in the beam slab, the part circle body of second reinforcing bar circle spills outside the beam slab up. The utility model discloses simple structure, the cost of manufacture is low, and the installation is convenient, and construction speed is fast, and the reinforcing bar can exempt from the welding, can pass through electric welding or the internal outside reinforcing bar temporary fixation of ligature under the special circumstances. The construction difficulties that the field construction period is long, the construction difficulty is high, the quality is difficult to control and the like are solved, and the conversion from the field construction to the factory intensive construction is realized.
Description
Technical Field
The utility model belongs to the technical field of public road bridge roof beam construction, a public road bridge roof beam guardrail equipment, especially a precast concrete guardrail structure are related to.
Background
With the rapid growth of the economy of China and the vigorous development of road transportation industry, the traffic volume rapidly increases, and higher requirements are put forward on the construction speed of road transportation facilities. Especially elevated road or bridge all generally are provided with the concrete guardrail, and in order to improve the efficiency of construction, generally adopt the prefabricated concrete guardrail to transport the building site, then weld or bolted connection with the roof beam board of guardrail and road or bridge. The connection installation mode has the advantages of stress concentration, difficult field welding, easy damage, long construction period and high construction difficulty.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an above-mentioned problem to prior art exists has provided a guardrail is assembled to precast concrete, and this guardrail is assembled to precast concrete makes guardrail and beam slab assemble and is connected, and the concrete of watering again fixes, and construction speed is fast, sound construction, and structural mechanics and outward appearance homogeneity are good.
The purpose of the utility model can be realized by the following technical proposal: a precast concrete assembled guardrail comprises a precast concrete guardrail and a beam plate, a concrete post-pouring groove is reserved at the splicing part of the bottom of the precast concrete guardrail and a flange plate of the beam plate, a first reinforcing steel bar ring is pre-buried in the precast concrete guardrail, part of ring body of the first reinforcing steel bar ring is exposed out of the post-pouring concrete groove, a second reinforcing steel bar ring is pre-buried in the beam slab, part of ring body of the second reinforcing steel bar ring is upwards exposed outside the beam slab, the flange plates of the beam plates are poured into the groove after the concrete at the bottom of the precast concrete guardrail, and when the groove is implemented, the exposed part of the ring body of the first steel reinforcing ring is overlapped with the exposed part of the ring body of the second steel reinforcing ring in an interlaced way, the longitudinal steel bar simultaneously passes through the exposed part of the ring body of the first steel reinforcing ring and the exposed part of the ring body of the second steel reinforcing ring, and the concrete post-pouring groove at the position where the exposed part of the ring body of the first steel reinforcing ring and the exposed part of the ring body of the second steel reinforcing ring correspond in an interlaced way is filled with high-performance concrete to wrap and close.
In the precast concrete assembled guardrail, the longitudinal steel bars comprise an upper row and a lower row, the upper row of the longitudinal steel bars is fixedly connected with the second steel bar ring, and the lower row of the longitudinal steel bars is fixedly connected with the first steel bar ring. The temporary fixing connection can be made by simple welding or taping.
In the precast concrete assembled guardrail, the concrete poured into the post-pouring groove at the staggered corresponding position of the exposed part of the ring body of the first reinforcing ring and the exposed part of the ring body of the second reinforcing ring is UHPC ultrahigh-performance concrete. Ultra-High Performance Concrete (UHPC) is also called Reactive Powder Concrete (RPC).
In the precast concrete assembled guardrail, the precast concrete guardrail has a radian matched with the profile of the beam plate flange plate in the length direction. To facilitate bending of the guardrail path and matching of the beam panel flange plates.
In the precast concrete assembled guardrail, the precast concrete guardrail is provided with a clamp for fixing the pull rod. So that the guardrail is connected with the positioning pull rod, and the guardrail is temporarily fixed in position through the pull rod.
Compared with the prior art, the precast concrete assembled guardrail has the following advantages:
the utility model discloses a set up intercrossing's reinforcing bar circle on guardrail and beam slab, pass longitudinal reinforcement in the middle of them to at the quick steel construction skeleton that has formed of junction, the site operation is swift, then pours the concrete and forms reinforced concrete structure, thereby has guaranteed with the whole concrete structure's of bridge mechanics and outward appearance structure's integration, only need assemble, installation reinforcing bar, the simple operation of pouring just can realize the installation of guardrail, improves the efficiency of construction greatly.
The guardrail components are prefabricated and molded in advance, and are transported to the site for direct installation, so that parallel operation is realized, and time and labor cost are saved. The adaptability to highway bridges is excellent, and the method is suitable for highway bridges of various grades. Simple structure, the cost of manufacture is low, and the installation is convenient, and construction speed is fast, and the reinforcing bar can exempt from the welding, can pass through electric welding spot welding or ligature inside and outside reinforcing bar temporary fixation under the special circumstances. The method solves the construction difficulties of long site construction period, high construction difficulty, poor site construction conditions, difficult quality control and the like, and realizes the conversion from site construction to factory intensive construction.
Drawings
FIG. 1 is a schematic view of a guardrail;
FIG. 2 is a schematic view of a beam panel;
FIG. 3 is a schematic view showing the assembly of the guard rail and the beam plate according to the first embodiment;
fig. 4 is a schematic view showing the assembly of the guard rail and the beam plate of the second embodiment.
In the figure, a guardrail 1, a beam plate 2, a concrete post-pouring groove 101, a first reinforcing ring 3, a second reinforcing ring 4, longitudinal steel bars 5, upper-row longitudinal steel bars 501, lower-row longitudinal steel bars 502, a grouting baffle 6, a positioning pull rod 7, a grouting pipe 8 and a clamp 9.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1, 2 and 3, a precast concrete assembled guardrail comprises a precast concrete guardrail 1 and a beam plate 2 connected with the guardrail, a concrete post-pouring groove 101 is reserved at the splicing part of the bottom of the precast concrete guardrail and the flange plate of the beam plate, a first reinforcing steel bar ring 3 is pre-embedded in the precast concrete guardrail, part of ring body of the first reinforcing steel bar ring is exposed out of the post-pouring concrete groove, a second steel bar ring 4 is pre-embedded in the beam slab, part of ring body of the second steel bar ring is upwards exposed outside the beam slab, when the beam plate flange plate is inserted into the concrete post-pouring groove at the bottom of the precast concrete guardrail, the exposed part of the ring body of the first reinforcing steel bar ring and the exposed part of the ring body of the second reinforcing steel bar ring are in staggered lap joint, and the longitudinal steel bars 5 are simultaneously inserted through the exposed part of the ring body of the first reinforcing steel bar ring and the exposed part of the ring body of the second reinforcing steel bar ring, so that the first reinforcing steel bar ring and the second reinforcing steel bar ring are connected together through the longitudinal steel bars.
Then, the post-pouring groove 101 for concrete between the guard rail and the beam plate at the crossing of the first and second reinforcing rings is blocked by the grouting blocking plate 6 with a grouting hole left, and then UHPC ultra-high performance concrete is injected into the interior through the grouting pipe 8. Ultra-High Performance Concrete (UHPC) is also called Reactive Powder Concrete (RPC).
If the road is curved, that is, the girder plate flange plate is curved, the precast concrete guard rail may have a curvature in a length direction matching the contour of the girder plate flange plate. To facilitate bending of the guardrail path and matching of the beam panel flange plates.
Example two
As shown in fig. 4, the longitudinal reinforcements include two upper rows and two lower rows, the upper row 501 is fixedly connected to the second reinforcing mat, and the lower row 502 is fixedly connected to the first reinforcing mat. The temporary fixing connection can be made by simple welding or taping.
And the precast concrete guardrail is provided with a fixture 9 for fixing the pull rod. So that the guardrail is connected with the positioning pull rod 7, and the temporary position of the guardrail is fixed through the pull rod. For example, the pull rod is a pull rod with adjustable length, one end of the pull rod is connected with one end of the guardrail and is connected with the beam plate, and the pull rod adjusts the angle of the guardrail relative to the beam plate by adjusting the length of the pull rod so as to ensure the verticality.
Although some terms are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. A precast concrete assembled guardrail comprises a precast concrete guardrail and a beam plate, a concrete post-pouring groove is reserved at the splicing part of the bottom of the precast concrete guardrail and a flange plate of the beam plate, it is characterized in that a first reinforcing steel bar ring is pre-embedded in the precast concrete assembled guardrail, part of ring body of the first reinforcing steel bar ring is exposed out of a post-cast concrete groove, a second reinforcing steel bar ring is pre-buried in the beam slab, part of ring body of the second reinforcing steel bar ring is upwards exposed outside the beam slab, when the flange plate of the beam plate is inserted into the concrete post-pouring groove at the bottom of the precast concrete guardrail, the exposed part of the steel ring body of the first steel ring and the exposed part of the steel ring body of the second steel ring are in staggered lap joint, the longitudinal steel bar simultaneously passes through the exposed part of the steel ring body of the first steel ring and the exposed part of the steel ring body of the second steel ring, and the concrete post-pouring groove at the staggered corresponding position of the exposed part of the steel ring body of the first steel ring and the exposed part of the steel ring body of the second steel ring is filled with high-performance concrete to wrap the concrete.
2. The precast concrete assembled guardrail according to claim 1, wherein the longitudinal reinforcements comprise upper and lower rows, the upper row of longitudinal reinforcements is fixedly connected with the second reinforcing rings, and the lower row of longitudinal reinforcements is fixedly connected with the first reinforcing rings.
3. The precast concrete assembled guardrail according to claim 1, wherein the concrete poured into the concrete post-pouring groove at the staggered corresponding position of the exposed part of the ring body of the first reinforcing steel ring and the exposed part of the ring body of the second reinforcing steel ring is UHPC ultra-high performance concrete.
4. The precast concrete assembled guardrail of claim 1, wherein the precast concrete guardrail has a curvature in a length direction matching a flange plate profile of the beam plate.
5. The precast concrete assembled guardrail according to claim 1, wherein a clamp for fixing the pull rod is provided on the precast concrete guardrail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920722168.1U CN210368626U (en) | 2019-05-20 | 2019-05-20 | Guardrail is assembled to precast concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920722168.1U CN210368626U (en) | 2019-05-20 | 2019-05-20 | Guardrail is assembled to precast concrete |
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| Publication Number | Publication Date |
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| CN210368626U true CN210368626U (en) | 2020-04-21 |
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| CN201920722168.1U Active CN210368626U (en) | 2019-05-20 | 2019-05-20 | Guardrail is assembled to precast concrete |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113293700A (en) * | 2021-05-08 | 2021-08-24 | 南京交通职业技术学院 | Urban bridge L-shaped marble railing and design and construction method |
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2019
- 2019-05-20 CN CN201920722168.1U patent/CN210368626U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113293700A (en) * | 2021-05-08 | 2021-08-24 | 南京交通职业技术学院 | Urban bridge L-shaped marble railing and design and construction method |
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