Ground anchor abutment structure

Abstract

The utility model discloses a ground anchor bridge abutment structure which comprises a cross beam and a plurality of underground diaphragm walls, a supporting face is arranged at the bottom end of the cross beam, each underground diaphragm wall comprises a connecting end abutting against the supporting face and a landfill end buried in a soil layer, and the underground diaphragm walls are arranged in the length direction of the cross beam. And a construction interval is reserved between every two landfill ends. Firstly, a plurality of construction pits in one-to-one correspondence with a plurality of underground diaphragm walls are dug in a to-be-constructed area, then the underground diaphragm walls are poured in the construction pits, the landfill ends of the solidified underground diaphragm walls are buried in the corresponding construction pits, finally, the beams are poured at the top ends of the underground diaphragm walls, and construction of the ground anchor bridge abutment structure can be completed. Due to the fact that the construction intervals are reserved between the landfill ends, the landfill ends of the underground diaphragm walls can be poured into a plurality of construction pits with small calibers, and the landfill ends of all the underground diaphragm walls are not poured into a construction pit with a large caliber. And the earthwork volume of excavation of the construction pit is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, in particular to a ground anchor abutment structure. Background Art

[0002] The anchor abutment is a key load-bearing component of a large-span anchored cable-stayed bridge, which must safely bear the huge uplift and horizontal forces transmitted by the anchored cable. At present, the commonly used anchor structures can be divided into solid gravity anchors, box-shaped hollow box anchors and rock anchors.

[0003] The existing ground anchor abutment can be seen in the patent application number 202011295017.6, which has a crossbeam at the top and a plurality of ground-connected walls at least partially buried in the soil layer (foundation). During the construction of the above-mentioned ground anchor abutment, a huge construction pit needs to be opened in the soil layer (foundation), and all the ground-connected walls are placed in the construction pit and then buried. However, the amount of earthwork that needs to be excavated in the above-mentioned construction pit is very large, which greatly slows down the construction efficiency of the ground anchor abutment.

[0004] Therefore, how to reduce the amount of earthwork excavated in the construction pit is a technical problem that needs to be solved urgently. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies, propose a ground anchor abutment structure, and solve the technical problem of how to reduce the amount of earthwork excavated in the construction pit in the prior art.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] A ground anchor abutment structure, comprising:

[0008] a beam having a support surface at a bottom end thereof; and

[0009] A plurality of ground-anchored walls, each of which includes a connecting end abutting against the supporting surface and a landfill end buried in the soil layer; the plurality of ground-anchored walls are arranged along the length direction of the beam, and a construction spacing is reserved between each of the landfill ends.

[0010] In some embodiments, a plurality of cavities are defined in the crossbeam.

[0011] In some embodiments, the cavity is filled with sand and gravel.

[0012] In some embodiments, a plurality of the cavities are arranged in an array.

[0013] In some embodiments, the outer wall of the ground-connected wall has a plurality of friction serrations.

[0014] In some embodiments, the top angle of the friction serrations is an obtuse angle.

[0015] In some embodiments, the landfill end penetrates the covering layer of the soil layer and is buried in the bearing layer of the soil layer.

[0016] In some embodiments, the number of the ground-connected walls increases as the length of the beam increases.

[0017] In some embodiments, the thickness of the ground-connected wall is not less than one third of the construction spacing length.

[0018] In some embodiments, the ground-connected wall is perpendicular to the supporting surface.

[0019] First, several construction pits corresponding to several ground-anchored walls are dug in the area to be constructed, and then the ground-anchored walls are cast in each construction pit, so that the landfill end of the solidified ground-anchored wall is buried in the corresponding construction pit. Finally, the crossbeam is cast on the top of the ground-anchored wall to complete the above-mentioned ground anchor abutment structure construction. Since there is a construction spacing between each landfill end, the landfill end of each ground-anchored wall can be cast in multiple construction pits with very small diameters, rather than casting all the landfill ends of the ground-anchored wall in one construction pit with a large diameter. This greatly reduces the amount of earthwork excavated in the construction pit and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of the ground anchor abutment structure provided by an embodiment of the utility model;

[0021] Figure 2 It is a side view of the anchor abutment structure of an embodiment of the utility model.

[0022] Description of the reference numerals: beam 100 , cavity 110 , ground connecting wall 200 , friction teeth 210 . DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] In order to solve the technical problem of how to reduce the amount of earthwork excavated in the construction pit, the utility model provides a ground anchor abutment structure, which completes the pouring of the ground-connected wall 200 in multiple construction pits with very small diameters, thereby reducing the amount of earthwork excavated in the construction pit.

[0025] It should be noted that the ground-anchored abutment structure of the present invention is used for but not limited to bridge construction, etc. For the sake of convenience of explanation, in the present invention, only the ground-anchored abutment structure applied to bridge construction is used as an example for explanation, and the principles of applying the ground-anchored abutment structure to other types of equipment are essentially the same as those applied to bridge construction, and will not be described in detail here.

[0026] See also Figure 1 , Figure 1 The schematic diagram of the structure of the ground anchor abutment structure in one embodiment of the utility model comprises a cross beam 100 and a plurality of ground connecting walls 200. The bottom end of the cross beam 100 has a support surface. The ground connecting wall 200 comprises a connection end abutting the support surface and a landfill end buried in the soil layer. The plurality of ground connecting walls 200 are arranged along the length direction of the cross beam 100, and a construction spacing is reserved between each landfill end.

[0027] In this embodiment, firstly, several construction pits corresponding to several ground-connected walls 200 are dug in the area to be constructed, and then the ground-connected walls are cast in each construction pit, so that the landfill end of the solidified ground-connected wall 200 is buried in the corresponding construction pit, and finally the crossbeam is cast on the top of the ground-connected wall 200 to complete the construction of the above-mentioned anchor bridge abutment structure. Since the construction spacing is reserved between each landfill end, the landfill end of each ground-connected wall 200 can be cast in multiple construction pits with very small diameters, rather than casting the landfill ends of all ground-connected walls in one construction pit with a large diameter. The amount of earthwork excavated in the construction pit is greatly reduced, and the construction efficiency is improved.

[0028] In some of the embodiments, a plurality of cavities 110 are defined in the beam 100 .

[0029] In this embodiment, since a plurality of cavities 110 are provided in the crossbeam 100 , the weight of the crossbeam 100 can be reduced.

[0030] In some embodiments, the cavity 110 is filled with sand and gravel.

[0031] In this embodiment, filling the cavity 110 with sand and gravel can balance the forces at various locations of the beam 100 , so that the beam 100 is subjected to uniform forces.

[0032] In some embodiments, the plurality of cavities 110 are arranged in an array.

[0033] Since the cavities 110 are arranged in an array, the cavities 110 can be evenly distributed in the beam 100 .

[0034] In some embodiments, the outer wall of the ground-connected wall 200 has a plurality of friction serrations 210 .

[0035] In this embodiment, a plurality of friction serrations 210 are provided on the outer wall of the ground-connected wall 200, so as to increase the friction between the ground-connected wall 200 and the soil layer, so that the ground-anchored abutment structure has a better load-bearing capacity.

[0036] In some embodiments, the top angle of the friction serrations 210 is an obtuse angle.

[0037] In this embodiment, since the top angle of the friction teeth 210 is an obtuse angle, the soil can be more easily filled into the gaps between the friction teeth 210 , and on the other hand, the excessive stress on the roots of the friction teeth 210 can be reduced.

[0038] In some of the embodiments, the landfill end penetrates through the cover layer of the soil layer and is buried in the bearing layer of the soil layer.

[0039] In this embodiment, the landfill end is passed through the soft covering layer and buried in the solid bearing layer, so that the anchor abutment can be made more stable.

[0040] In some of the embodiments, the number of the ground-connected walls 200 increases as the length of the beam 100 increases.

[0041] It is understandable that the number of ground-connected walls 200 is positively correlated with the length of the beam 100. The longer the beam 100 is, the more ground-connected walls 200 need to be provided. In addition, if the load borne by the beam 100 is greater, the more ground-connected walls 200 need to be provided.

[0042] In some of the embodiments, the thickness of the ground-connected wall 200 is not less than one third of the length of the construction interval.

[0043] In this embodiment, the minimum thickness of the ground-connected wall 200 is not less than one-third of the construction spacing length, ensuring that the ground-connected wall 200 has sufficient structural strength.

[0044] In some of these embodiments, the ground-connected wall 200 is perpendicular to the supporting surface.

[0045] In this embodiment, making the ground-connected wall 200 perpendicular to the supporting surface can make the ground-connected wall 200 support the crossbeam 100 more stably.

[0046] In order to better understand the present invention, the following Figure 1 to Figure 2 The technical solution of the utility model is described in detail:

[0047] First, a number of construction pits corresponding to the ground-connected walls 200 are dug in the area to be constructed, and the landfill ends of each ground-connected wall 200 are cast in the corresponding construction pits, and the landfill ends are made to pass through the soft covering layer and be buried in the solid bearing layer. At the same time, a number of friction serrations 210 are set on the outer wall of the ground-connected wall 200, so as to increase the friction between the ground-connected wall 200 and the soil layer, so that the anchor bridge abutment structure has a better load capacity. Then the construction of the above-mentioned anchor bridge abutment structure is completed. Since the construction spacing is reserved between each landfill end, the landfill ends of each ground-connected wall 200 can be cast in multiple construction pits with very small diameters, rather than casting the landfill ends of all ground-connected walls 200 in a construction pit with a large diameter. The amount of earthwork excavated in the construction pit is greatly reduced, and the construction efficiency is improved.

[0048] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A ground anchor abutment structure, characterized in that: include: a beam having a support surface at a bottom end thereof; and A plurality of ground-anchored walls, each of which includes a connecting end abutting against the supporting surface and a landfill end buried in the soil layer; the plurality of ground-anchored walls are arranged along the length direction of the beam, and a construction spacing is reserved between each of the landfill ends.

2. The anchor abutment structure according to claim 1, characterized in that: A plurality of cavities are provided in the cross beam.

3. The anchor abutment structure according to claim 2, characterized in that: The cavity is filled with sand and stone.

4. The anchor abutment structure according to claim 2, characterized in that: A plurality of the cavities are arranged in an array.

5. The anchor abutment structure according to claim 1, characterized in that: The outer wall of the ground-connected wall is provided with a plurality of friction serrations.

6. The ground anchor abutment structure according to claim 5, characterized in that: The top angle of the friction sawtooth is an obtuse angle.

7. The anchor abutment structure according to claim 1, characterized in that: The landfill end penetrates the covering layer of the soil layer and is buried in the bearing layer of the soil layer.

8. The ground anchor abutment structure according to claim 1, characterized in that: The number of the ground-connected walls increases as the length of the crossbeam increases.

9. The ground anchor abutment structure according to claim 1, characterized in that: The thickness of the ground-connected wall is not less than one third of the length of the construction spacing.

10. The anchor abutment structure according to claim 1, characterized in that: The ground-connected wall is perpendicular to the supporting surface.

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