Prestressed anchor cable prefabricated concrete frame beam

Abstract

The utility model relates to the technical field of side slope prevention and treatment, and relates to a prestressed anchor cable prefabricated concrete frame beam, the structure includes: prefabricated component and anchor cable, prefabricated component includes at least two, if several prefabricated components carry out splicing and constitute frame beam, prefabricated component includes first prefabricated beam, second prefabricated beam third prefabricated beam, first prefabricated beam is T type beam, second prefabricated beam is cross type beam, third prefabricated beam is L type beam, one side of second prefabricated beam is fixedly connected with first prefabricated beam, one side of third prefabricated beam is fixedly connected with the other side of first prefabricated beam, and third prefabricated beam is vertically arranged with second prefabricated beam;Anchor cable is arranged in the middle of first prefabricated beam, second prefabricated beam and third prefabricated beam, and the anchor cable is arranged inside the side slope, the utility model shifts the production site of concrete component from the construction site to the inside of prefabrication factory, pours and maintains under standard condition, guarantees the controllability and stability of test piece quality.

Description

Technical Field

[0001] This utility model relates to the field of slope protection technology, and more specifically, to a prestressed anchor cable precast concrete frame beam. Background Technology

[0002] Slope anchoring engineering is an important component of geotechnical engineering, widely used in water conservancy, hydropower, mining, tunnels, railways, highways, and urban construction. During large-scale construction of long-distance highways, railways, and tunnels in mountainous areas, the excavation of slopes on both sides can disrupt slope stability, and in severe cases, can directly cause landslides, collapses, and other safety accidents during construction, resulting in frequent slope disasters.

[0003] Existing technologies require on-site concrete beam pouring and curing by construction workers, resulting in substandard curing conditions. Furthermore, current prefabricated beam technology demands high flatness in trench excavation, and the existing prefabricated anchored frame beams use I-beams and other steel materials for connection between modules, leading to poor corrosion resistance and durability, making them unsuitable for extreme environments or significant environmental changes. Utility Model Content

[0004] The purpose of this utility model is to provide a prestressed anchor cable precast concrete frame beam to improve the above-mentioned problems. To achieve the above objective, the technical solution adopted by this utility model is as follows:

[0005] This application provides a prestressed anchor cable precast concrete frame beam. The structure includes: precast components and anchor cables. The precast components include at least two precast components, which are spliced ​​together to form a frame beam. The precast components include a first precast beam, a second precast beam, and a third precast beam. The first precast beam is a T-shaped beam, the second precast beam is a cross-shaped beam, and the third precast beam is an L-shaped beam. One side of the second precast beam is fixedly connected to the first precast beam, and one side of the third precast beam is fixedly connected to the other side of the first precast beam. The third precast beam is perpendicular to the second precast beam. The anchor cables are located in the middle of the first, second, and third precast beams, and are located inside the slope.

[0006] Optionally, the first precast beam and the second precast beam are fixedly connected by a concrete shell.

[0007] Optionally, the ends of the first precast beam, the second precast beam, and the third precast beam are all provided with a first steel bar, and the first steel bar is provided with a screw hole.

[0008] Optionally, a second steel bar is also provided inside the concrete shell, and adjacent precast beams are fixedly connected by the second steel bar.

[0009] Optionally, an anchor cable positioning hole is provided at the geometric center of the first precast beam.

[0010] Optionally, the anchor cable is disposed in the anchor cable positioning hole, and an anchor head is provided at the end of the anchor cable away from the slope, and a gasket is provided between the anchor head and the anchor cable positioning hole.

[0011] Optionally, the connection between the crossbeam and the longitudinal beam of the first precast beam is chamfered.

[0012] Optionally, the concrete shell includes an upper shell and a lower shell, and the connection between the upper shell and the lower shell is arranged in a stepped manner.

[0013] Optionally, the top of the upper shell is provided with a grouting hole.

[0014] Optionally, a first through hole, a second through hole, and a third through hole are provided at the connection between the upper shell and the lower shell. The second through hole is located between the first through hole and the third through hole. The height of the first through hole is less than that of the second through hole, and the height of the second through hole is less than that of the third through hole.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention constructs a frame beam by assembling several prefabricated first, second, and third prefabricated beams. The manufacturing of the main frame beam is moved from the construction site to an indoor factory with controlled temperature and humidity, where casting and curing are carried out. After curing, the beams are transported to the construction site for assembly. This shortens the construction cycle and avoids the problem of substandard curing conditions caused by on-site concrete casting and curing by construction personnel, as required by existing technologies. Furthermore, the assembly of the first prefabricated beam as a T-beam, the second as a cross-beam, and the third as an L-beam offers advantages such as stability, reliability, good mechanical properties, strong adaptability, and excellent seismic performance.

[0017] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the prestressed anchor cable precast concrete frame beam structure in an embodiment of this utility model.

[0020] Figure 2 This is a schematic diagram of the first precast beam structure described in an embodiment of this utility model.

[0021] Figure 3 This is a schematic diagram of the anchor cable structure described in the embodiments of this utility model.

[0022] Figure 4 This is a schematic diagram of the internal structure of the concrete shell described in the embodiment of this utility model.

[0023] Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0024] Markings in the diagram: 1. Second precast beam; 2. First precast beam; 3. Third precast beam; 4. Concrete shell; 5. Anchor cable; 6. Anchor cable positioning hole; 7. First steel bar; 8. Second steel bar; 9. Anchor head; 10. Gasket; 11. Chamfer; 12. Upper shell; 13. Lower shell; 14. Grouting hole; 15. First through hole; 16. Second through hole; 17. Third through hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figure 1 As shown, this embodiment provides a prestressed anchor cable precast concrete frame beam. The structure includes: precast components and anchor cables 5. The precast components include at least two precast components, which are spliced ​​together to form a frame beam. Each precast component includes a first precast beam 2, a second precast beam 1, and a third precast beam 3. The first precast beam 2 is a T-shaped beam, the second precast beam 1 is a cross-shaped beam, and the third precast beam 3 is an L-shaped beam. One side of the second precast beam 1 is fixedly connected to the first precast beam 2, and one side of the third precast beam 3 is fixedly connected to the other side of the first precast beam 2. The third precast beam 3 is perpendicular to the second precast beam 1. The anchor cables 5 are located in the middle of the first precast beam 2, the second precast beam 1, and the third precast beam 3. The anchor cables 5 are located inside the slope. In this embodiment, as shown... Figure 5 The overall structure of the frame beam shown is quadrilateral. The first precast beam 2 is a T-shaped beam, which can serve as the side length of the overall frame beam structure. The second precast beam 1 is a cross-shaped beam, which can serve as the central structure of the overall frame beam structure. The third precast beam 3 is an L-shaped beam, which can serve as the four corners of the overall frame beam structure. This splicing method has the advantages of stability, reliability, good mechanical properties, and strong adaptability. At the same time, the existing technology requires construction personnel to pour and cure the concrete beams on site. On-site curing is prone to problems such as substandard curing conditions due to environmental factors. In this embodiment, the manufacturing site of the first precast beam 2, the second precast beam 1, and the third precast beam 3 is transferred from the construction site to an indoor factory where the temperature and humidity can be controlled. Pouring and curing are carried out in the precast factory. After curing, they are transported to the construction site for assembly, which can effectively solve the defects of the existing technology.

[0028] In one specific embodiment of this disclosure, the first precast beam 2 and the second precast beam 1 are fixedly connected by a concrete shell 4.

[0029] like Figure 2 As shown, in one specific embodiment of this disclosure, the ends of the first precast beam 2, the second precast beam 1 and the third precast beam 3 are all provided with first steel bars 7, and the first steel bars 7 are provided with screw holes.

[0030] In one specific embodiment of this disclosure, a second steel bar 8 is also provided inside the concrete shell 4. The two adjacent precast beams are fixedly connected by the second steel bar 8. The ends of the two adjacent precast beams are provided with a first steel bar 7. The two ends of the second steel bar 8 are fixed to the screw holes of the two first steel bars 7 by bolts, thereby fixing the two adjacent precast beams together and enhancing the rigidity of the structure. In addition, by fixing the connection inside the concrete shell 4, it is ensured that the connection is inside the concrete and prevents it from being eroded by the external environment.

[0031] In one specific embodiment of this disclosure, an anchor cable positioning hole 6 is provided at the geometric center of the first precast beam 2, and anchor cable positioning holes 6 are provided at the geometric centers of both the second precast beam 1 and the third precast beam 3.

[0032] like Figure 3 As shown, in one specific embodiment of this disclosure, the anchor cable 5 is disposed in the anchor cable positioning hole 6, and an anchor head 9 is disposed at the end of the anchor cable 5 away from the slope. A gasket 10 is disposed between the anchor head 9 and the anchor cable positioning hole 6. When the anchor cable 5 is tensioned and prestressed by the jack, the gasket 10 can protect the anchor head 9 and prevent wear between it and the precast beam.

[0033] In one specific embodiment of this disclosure, a chamfer 11 is provided at the connection between the crossbeam and the longitudinal beam of the first precast beam 2. By providing the chamfer 11, stress concentration can be reduced.

[0034] In one specific embodiment of this disclosure, the concrete shell 4 includes an upper shell 12 and a lower shell 13. The connection between the upper shell 12 and the lower shell 13 is arranged in a stepped manner, which can make the connection between the upper shell 12 and the lower shell 13 tighter.

[0035] In one specific embodiment of this disclosure, the top of the upper shell 12 is provided with a grouting hole 14, such as... Figure 4As shown, a first through hole 15, a second through hole 16, and a third through hole 17 are provided at the connection between the upper shell 12 and the lower shell 13. The second through hole 16 is located between the first through hole 15 and the third through hole 17. The height of the first through hole 15 is less than that of the second through hole 16, and the height of the second through hole 16 is less than that of the third through hole 17. The second through hole 16 serves as a positioning hole to achieve the positioning and installation of the upper shell 12 and the lower shell 13. After positioning, it is fixed by bolts. At this time, grouting is performed through the grouting hole 14. The grout overflows through the first through hole 15 and the third through hole 17 to compensate for the leveling of the groove opened at the bottom of the frame beam and adapt to the slope undulation. It fills the gap between the concrete frame beam and the component. After the compensation meets the installation requirements, the first through hole 15 and the third through hole 17 are fixed by studs to seal the concrete shell 4 for subsequent curing. Setting the first through hole 15, the second through hole 16, and the third through hole 17 at different heights makes it easier to control the flow rate of the grout.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A prestressed anchor cable precast concrete frame beam, characterized in that, include: The prefabricated components include at least two prefabricated components, and several prefabricated components are spliced ​​together to form a frame beam. The prefabricated components include a first prefabricated beam (2), a second prefabricated beam (1), and a third prefabricated beam (3). The first prefabricated beam (2) is a T-shaped beam, the second prefabricated beam (1) is a cross-shaped beam, and the third prefabricated beam (3) is an L-shaped beam. One side of the second prefabricated beam (1) is fixedly connected to the first prefabricated beam (2), and one side of the third prefabricated beam (3) is fixedly connected to the other side of the first prefabricated beam (2). The third prefabricated beam (3) is perpendicular to the second prefabricated beam (1). Anchor cable (5) is installed in the middle of the first precast beam (2), the second precast beam (1) and the third precast beam (3), and the anchor cable (5) is installed inside the slope.

2. The prestressed anchor cable precast concrete frame beam according to claim 1, characterized in that: The first precast beam (2) and the second precast beam (1) are fixedly connected by a concrete shell (4).

3. The prestressed anchor cable precast concrete frame beam according to claim 1, characterized in that: The ends of the first precast beam (2), the second precast beam (1) and the third precast beam (3) are all provided with first steel bars (7), and the first steel bars (7) are provided with screw holes.

4. The prestressed anchor cable precast concrete frame beam according to claim 2, characterized in that: The concrete shell (4) is also provided with a second steel bar (8), and the two adjacent precast beams are fixedly connected by the second steel bar (8).

5. The prestressed anchor cable precast concrete frame beam according to claim 1, characterized in that: An anchor cable positioning hole (6) is provided at the geometric center of the first precast beam (2).

6. The prestressed anchor cable precast concrete frame beam according to claim 5, characterized in that: The anchor cable (5) is installed in the anchor cable positioning hole (6), and an anchor head (9) is provided at the end of the anchor cable (5) away from the slope. A gasket (10) is provided between the anchor head (9) and the anchor cable positioning hole (6).

7. The prestressed anchor cable precast concrete frame beam according to claim 1, characterized in that: The first precast beam (2) has a chamfer (11) at the connection between the crossbeam and the longitudinal beam.

8. The prestressed anchor cable precast concrete frame beam according to claim 2, characterized in that: The concrete shell (4) includes an upper shell (12) and a lower shell (13), and the connection between the upper shell (12) and the lower shell (13) is arranged in a stepped manner.

9. The prestressed anchor cable precast concrete frame beam according to claim 8, characterized in that: The top of the upper shell (12) is provided with a grouting hole (14).

10. The prestressed anchor cable precast concrete frame beam according to claim 9, characterized in that: The upper shell (12) and the lower shell (13) are provided with a first through hole (15), a second through hole (16) and a third through hole (17). The second through hole (16) is located between the first through hole (15) and the third through hole (17). The height of the first through hole (15) is less than that of the second through hole (16) and the height of the second through hole (16) is less than that of the third through hole (17).

Images