CN219490788U - Back anchoring type precast concrete guardrail structure - Google Patents
Back anchoring type precast concrete guardrail structure Download PDFInfo
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- CN219490788U CN219490788U CN202320522917.2U CN202320522917U CN219490788U CN 219490788 U CN219490788 U CN 219490788U CN 202320522917 U CN202320522917 U CN 202320522917U CN 219490788 U CN219490788 U CN 219490788U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The utility model discloses a back anchoring type precast concrete guardrail structure, which comprises concrete blocks, back stop blocks and longitudinal connecting pieces, and is characterized in that: the concrete block is a segment prefabricated and formed through reinforced concrete, a fixed groove is formed in the bottom of the back of the concrete block, the bottom of the back block is anchored on a foundation, the back block is cast together with the foundation or cast secondarily, the back block is embedded in the fixed groove, the longitudinal connecting pieces are arranged at two ends of the back of the concrete block, every two sections of the concrete block are connected into a whole through the longitudinal connecting pieces, a paving layer is arranged on the front side of the concrete block, and the top of the back block is connected with the concrete block through an anchoring steel pipe. According to the scheme, the concrete blocks are combined with the back stop blocks, the characteristics of simplicity and convenience in installation and the impact-resistant advantages of the concrete wall are combined, the field installation and application problems are effectively solved, the engineering adaptability is high, and the repeated recycling function is achieved.
Description
Technical Field
The utility model belongs to the field of traffic safety protection, and particularly relates to a back anchoring type precast concrete guardrail structure.
Background
At present, people pay more and more attention to the safety of transportation, and the highway guardrail plays a vital role as the last defense line of transportation safety.
The concrete guardrail is a common highway guardrail protection form, has the advantage of high rigidity through years of application practice, has a large safety protection allowance, is in a cast-in-situ form at present, namely, the working procedures of connecting anchoring ribs on a bridge, pouring concrete by a formwork, removing the formwork and the like are needed, the structural foundation is firmly connected, the safety protection capability is high, the construction period is long, the bridge occupation time is long, the bridge is often broken, the repeated use cannot be realized, and the large resource waste is caused.
Through continuous research of traffic safety scientific research institutions, a certain precast concrete guardrail with an assembling function is developed, standard sections are prefabricated in a factory and assembled through anchoring parts on site, the time of the site occupying the road surface can be saved, the construction period is greatly shortened, but the existing precast assembled guardrail is complex in connection, the connection of the anchoring parts is very difficult in field hoisting, the construction personnel has great danger, in addition, the connection of the anchoring parts is difficult, the reutilization of the guardrail structure is almost impossible, no matter in a cast-in-place mode or a precast mode is adopted in the field, the protection of the collision face is not in place, and the landscape effect is poor after the construction is finished.
Through the analysis and research, the inventor provides a back anchoring type precast concrete guardrail structure based on a stress mechanism of a concrete guardrail wall body and combined with on-site practical engineering installation application, so as to ensure the quality of a concrete collision face, the concrete wall body is anchored on the back and a bridge plate, and meanwhile, a longitudinal assembly method is optimized, so that the guardrail precast installation process is simplified, high protection capability is provided, and the reusable function of the concrete guardrail is realized.
Disclosure of Invention
The utility model aims to provide a back-anchored precast concrete guardrail structure, which aims to solve the problems of difficult back installation, complex connection and repeated recycling of the existing precast and spliced concrete guardrail.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
the utility model provides a back anchor formula precast concrete guardrail structure, includes concrete piece, back dog, longitudinal connection spare, the concrete piece is the section through reinforced concrete prefabrication shaping, the back bottom of concrete piece sets up the fixed slot, back dog bottom anchor is on the basis, the back dog is together pour or secondary pouring with the basis, back dog inlays in the fixed slot, longitudinal connection spare sets up in concrete piece back both ends, and every two sections concrete pieces are connected as wholly through longitudinal connection spare, concrete piece front side sets up the layer of laying, back dog top or be connected with the concrete piece through the anchor steel pipe.
Furthermore, when pouring together with the foundation, through embedded bar integral casting shaping between back dog and the foundation, the chamfer is done to the top corner that back dog and concrete piece are laminated mutually, leave the mounting seam between back dog and the concrete piece.
The back dog is when pouring with the basis secondary, including U type reinforcing bar and n type reinforcing bar, U type reinforcing bar interval sets up in the fixed slot, and n type reinforcing bar interval is pre-buried in the basis, concrete block bottom surface sets up on the basis, and n type reinforcing bar inserts staggered arrangement in the spaced space of U type reinforcing bar, penetrates vertical anchor muscle in the scope that both cross, the inside slant grout hole that sets up of concrete block, the fixed slot formwork at concrete block back is pour the fixed slot through from the top down and is filled up, and pours U type reinforcing bar, n type reinforcing bar and vertical anchor muscle into as wholly.
When the back stop block top is connected with the concrete block through the anchoring steel pipe, an anchoring hole is reserved at the bottom of the concrete block, the bottom of the anchoring hole penetrates into the fixed groove, the back stop block top is provided with a jack, and the anchoring steel pipe is inserted into the anchoring hole and the jack from top to bottom to form connection.
Further, the longitudinal connecting piece is of a back section steel assembly type and comprises embedded bolts and section steel, wherein the embedded bolts are embedded at two ends of the back of a concrete block, assembly holes are formed in the section steel, every two sections of concrete blocks are connected into a whole through the section steel, and the embedded bolts penetrate into the assembly holes.
Furthermore, the front side slope surface of the concrete block is in the form of an F-shaped slope surface, or a reinforced slope surface or a single slope surface.
Further, the top of the concrete block is provided with a lifting ring, the bottom of the lifting ring is anchored in the concrete block, and the top of the lifting ring is exposed out of the top surface of the concrete.
Further, the U-shaped steel bar opening direction is pre-buried in the concrete block, and the n-shaped steel bar opening direction is pre-buried in the foundation.
After the technical scheme is adopted, the utility model has the following beneficial effects:
(1) The reinforced concrete precast blocks are formed by connecting a foundation and longitudinally connecting the foundation and longitudinally forming a whole, so that the high protection capability of the bridge guardrail is met;
(2) The foundation connection anchoring design is carried out on the back of the concrete block, so that the quality of the concrete impact face is effectively ensured;
(3) The longitudinal connection of the back parts among the concrete blocks is verified by application, and the concrete block has the characteristics of high connection strength and strong universality;
(4) The industrialized batch production is realized, and the rapid assembly construction process of the prefabricated assembled concrete guardrail is realized;
(5) Meets the repeated recycling requirement of the concrete guardrail, reduces the resource waste and reduces the engineering cost.
Drawings
For a clearer description of the technical solutions of the present utility model, the following brief description will be given of the drawings that are used in the embodiments:
FIG. 1 is a schematic view showing a cross section of an embodiment 1 of the present utility model;
FIG. 2 is an elevation illustration of embodiment 1 of the present utility model;
FIG. 3 is a perspective view showing a concrete block according to the embodiment 1 of the present utility model;
FIG. 4 is a schematic view showing a cross-section of an embodiment 2 of the present utility model;
FIG. 5 is an elevation illustration of embodiment 2 of the present utility model;
FIG. 6 is a plan view showing an example of a back stop according to embodiment 2 of the present utility model;
FIG. 7 is a schematic view showing a cross-section of an embodiment 3 of the present utility model;
FIG. 8 is a diagram illustrating an example back stop according to embodiment 3 of the present utility model;
drawings
1. A concrete precast block; 2. a back stop; 3. a foundation; 4. a fixing groove; 5. paving a layer; 6. a hoisting ring; 7. anchoring the steel pipe; 8. u-shaped reinforcing steel bars; 9. n-type reinforcing steel bars; 10. longitudinal anchoring ribs; 11. grouting holes; 12. an anchor hole; 13. a jack; 14. embedding bolts; 15. section steel; 16. and assembling holes.
Description of the embodiments
The present utility model will be described in further detail with reference to examples and embodiments. It should not be construed that the scope of the above subject matter of the present utility model is limited to the following embodiments, and that all the techniques implemented based on the present utility model are within the scope of the present utility model.
Referring to fig. 1-2, an exemplary back-anchored precast concrete guardrail structure according to embodiment 1 of the present utility model is shown. Including concrete block 1, back dog 2, longitudinal connection spare, the slope form in front of concrete prefabricated block 1 includes F type domatic, strenghthened type domatic, single slope, concrete block 1 is the section through reinforced concrete prefabricated shaping, the back bottom of concrete block 1 sets up fixed slot 4, back dog 2 bottom anchor is on basis 3, back dog 2 is pouring with basis 3 secondary, back dog 2 inlays in fixed slot 4, longitudinal connection spare sets up in concrete block 1 back both ends, and every two sections concrete blocks 1 are connected as a whole through longitudinal connection spare, concrete block 1 front side sets up pavement layer 5.
When the back stop block 2 is poured with the foundation 3 for the second time, the U-shaped steel bars 8 are arranged in the fixed grooves 4 at intervals, the n-shaped steel bars 9 are embedded in the foundation 3 at intervals, the opening directions of the U-shaped steel bars 8 are embedded in the concrete precast block 1, the opening directions of the n-shaped steel bars 9 are embedded in the foundation 3, the bottom surface of the concrete block 1 is arranged on the foundation 3, the n-shaped steel bars 9 are inserted into the gaps of the U-shaped steel bars 8 at intervals in a staggered mode, longitudinal anchoring bars 10 penetrate into the crossed range of the two, oblique grouting holes 11 are formed in the concrete block 1, the fixed grooves 4 are filled with concrete by pouring from top to bottom, and the U-shaped steel bars 8, the n-shaped steel bars 9 and the longitudinal anchoring bars 10 are cast into a whole.
The longitudinal connecting piece is back section steel assembled type steel and comprises an embedded bolt 14 and section steel 15, wherein the embedded bolt 14 is embedded at two ends of the back of the concrete block 1, an assembly hole 16 is formed in the section steel 15, every two sections of concrete blocks 1 are connected into a whole through the section steel 15, and the embedded bolt 14 penetrates into the assembly hole 16.
As shown in fig. 3, the front slope surface form of the concrete precast block 1 comprises an F-shaped slope surface, a reinforced slope surface and a single slope surface, the concrete block 1 is a segment prefabricated and formed by reinforced concrete, a fixing groove 4 is formed in the bottom of the back surface of the concrete block 1, a lifting ring 6 is arranged at the top of the concrete block 1, the bottom of the lifting ring 6 is anchored in the concrete block 1, and the top of the lifting ring 6 is exposed out of the top surface of the concrete.
Fig. 4 to 6 are diagrams showing an example of the structure of a back-anchored precast concrete segment according to embodiment 2 of the present utility model. Including concrete piece 1, back dog 2, longitudinal connection spare, concrete piece 1 is the section through reinforced concrete prefabrication shaping, the back bottom of concrete piece 1 sets up fixed slot 4, back dog 2 bottom anchor is on basis 3, back dog 2 is together pouring or secondary pouring with basis 3, back dog 2 inlays in fixed slot 4, longitudinal connection spare sets up in concrete piece 1 back both ends, and every two sections concrete piece 1 are connected as whole through longitudinal connection spare, concrete piece 1 front side sets up layer 5 of laying, back dog 2 top or be connected with concrete piece 1 through anchor steel pipe 7.
When the top of the back stop block 2 is connected with the concrete block 1 through the anchor steel pipe 7, an anchor hole 12 is reserved at the bottom of the concrete block 1, the bottom of the anchor hole 12 is communicated into the fixed groove 4, an inserting hole 13 is formed in the top of the back stop block 2, and the anchor steel pipe 7 is simultaneously inserted into the anchor hole 12 and the inserting hole 13 from top to bottom to form connection.
The longitudinal connecting piece is back section steel assembled type steel and comprises an embedded bolt 14 and section steel 15, wherein the embedded bolt 14 is embedded at two ends of the back of the concrete block 1, an assembly hole 16 is formed in the section steel 15, every two sections of concrete blocks 1 are connected into a whole through the section steel 15, and the embedded bolt 14 penetrates into the assembly hole 16.
The top of the concrete block 1 is provided with a lifting ring 6, the bottom of the lifting ring 6 is anchored in the concrete block 1, and the top of the lifting ring 6 is exposed out of the top surface of the concrete.
Fig. 7 to 8 are diagrams showing an example of the structure of a back-anchored precast concrete segment according to embodiment 3 of the present utility model. Including concrete block 1, back dog 2, longitudinal connection spare, the domatic form of concrete block 1 front side is the strenghthened type slope, concrete block 1 is the section through reinforced concrete prefabrication shaping, the back bottom of concrete block 1 sets up fixed slot 4, back dog 2 bottom anchor is on basis 3, back dog 2 is together pour with basis 3, back dog 2 inlays in fixed slot 4, longitudinal connection spare sets up in concrete block 1 back both ends, and every two sections concrete blocks 1 are connected as a whole through longitudinal connection spare, concrete block 1 front side sets up the layer of laying 5, and back dog 2 is laminated with concrete block 1 looks top.
When the back stop block 2 is poured together with the foundation 3, the back stop block 2 and the foundation 3 are integrally poured and formed through embedded bars, the corner of the top, which is attached to the concrete block 1, of the back stop block 2 is chamfered, and an installation joint is reserved between the back stop block 2 and the concrete block 1.
The longitudinal connecting piece is back section steel assembled type steel and comprises an embedded bolt 14 and section steel 15, wherein the embedded bolt 14 is embedded at two ends of the back of the concrete block 1, an assembly hole 16 is formed in the section steel 15, every two sections of concrete blocks 1 are connected into a whole through the section steel 15, and the embedded bolt 14 penetrates into the assembly hole 16.
The top of the concrete block 1 is provided with a lifting ring 6, the bottom of the lifting ring 6 is anchored in the concrete block 1, and the top of the lifting ring 6 is exposed out of the top surface of the concrete.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (8)
1. The utility model provides a back anchor formula precast concrete guardrail structure, includes concrete piece (1), back dog (2), longitudinal connecting piece, its characterized in that: the concrete block (1) is a segment prefabricated and formed through reinforced concrete, a fixed groove (4) is formed in the bottom of the back of the concrete block (1), the bottom of the back stop block (2) is anchored on a foundation (3), the back stop block (2) is cast or secondarily cast together with the foundation (3), the back stop block (2) is embedded in the fixed groove (4), longitudinal connecting pieces are arranged at two ends of the back of the concrete block (1), every two sections of the concrete block (1) are connected into a whole through the longitudinal connecting pieces, a pavement layer (5) is arranged on the front side of the concrete block (1), and the top of the back stop block (2) is connected with the concrete block (1) through an anchoring steel pipe (7).
2. A back-anchored precast concrete guardrail structure of claim 1, characterized in that: when back dog (2) is pouring together with basis (3), pour shaping through embedded bar (6) whole between back dog (2) and the basis (3), chamfer processing is done at the top corner that back dog (2) are laminated mutually with concrete piece (1), leave the mounting seam between back dog (2) and concrete piece (1).
3. A back-anchored precast concrete guardrail structure of claim 1, characterized in that: when back dog (2) is pouring with basis (3) secondary, including U shaped steel muscle (8) and n shaped steel muscle (9), U shaped steel muscle (8) interval sets up in fixed slot (4), and n shaped steel muscle (9) interval pre-buries in basis (3), concrete piece (1) bottom surface sets up on basis (3), and n shaped steel muscle (9) are crisscross to insert dislocation set in U shaped steel muscle (8) spaced space, penetrate vertical anchor muscle (10) in the scope that both cross, concrete piece (1) inside sets up slant grout hole (11), fixed slot (4) formwork at concrete piece (1) back is pour fixed slot (4) through from the top down and is filled up, and pour U shaped steel muscle (8), n shaped steel muscle (9) and vertical anchor muscle (10) as whole.
4. A back-anchored precast concrete guardrail structure of claim 1, characterized in that: when back dog (2) top passes through anchor steel pipe (7) and is connected with concrete block (1), anchor hole (12) are reserved to concrete block (1) bottom, and anchor hole (12) bottom link up to in fixed slot (4), back dog (2) top sets up jack (13), and anchor steel pipe (7) inserts anchor hole (12) and jack (13) in forming the connection from top to bottom simultaneously.
5. A back-anchored precast concrete guardrail structure of claim 1, characterized in that: the longitudinal connecting piece is back section steel assembled type steel and comprises embedded bolts (14) and section steel (15), wherein the embedded bolts (14) are embedded at two ends of the back of a concrete block (1), an assembly hole (16) is formed in the section steel (15), every two sections of concrete blocks (1) are connected into a whole through the section steel (15), and the embedded bolts (14) penetrate into the assembly hole (16).
6. A back-anchored precast concrete guardrail structure of claim 1, characterized in that: the front side slope surface of the concrete block (1) is in the form of an F-shaped slope surface, or a reinforced slope surface or a single slope surface.
7. A back-anchored precast concrete guardrail structure of claim 1, characterized in that: the top of the concrete block (1) is provided with a lifting ring (17), the bottom of the lifting ring (17) is anchored in the concrete block (1), and the top of the lifting ring (17) is exposed out of the top surface of the concrete.
8. A back-anchored precast concrete guardrail structure of claim 3, characterized in that: the opening direction of the U-shaped steel bar (8) is embedded in the concrete block (1), and the opening direction of the n-shaped steel bar (9) is embedded in the foundation (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320522917.2U CN219490788U (en) | 2023-03-17 | 2023-03-17 | Back anchoring type precast concrete guardrail structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320522917.2U CN219490788U (en) | 2023-03-17 | 2023-03-17 | Back anchoring type precast concrete guardrail structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219490788U true CN219490788U (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320522917.2U Active CN219490788U (en) | 2023-03-17 | 2023-03-17 | Back anchoring type precast concrete guardrail structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219490788U (en) |
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2023
- 2023-03-17 CN CN202320522917.2U patent/CN219490788U/en active Active
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