CN215887898U - Abutment structure suitable for bedrock area abrupt slope district - Google Patents
Abutment structure suitable for bedrock area abrupt slope district Download PDFInfo
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- CN215887898U CN215887898U CN202121918292.9U CN202121918292U CN215887898U CN 215887898 U CN215887898 U CN 215887898U CN 202121918292 U CN202121918292 U CN 202121918292U CN 215887898 U CN215887898 U CN 215887898U
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Abstract
The utility model discloses an abutment structure suitable for a steep slope section in a bedrock area, which comprises a table cap, wherein the lower end of the table cap is connected with a front pile foundation, the rear side of the table cap is connected with a first anchor beam, the rear side of the first anchor beam is connected with a second anchor beam, and the lower end of the second anchor beam is connected with a rear pile foundation; the front pile foundation is located on one side close to the side slope, the rear pile foundation is located on one side far away from the side slope, and the front pile foundation and the rear pile foundation are both anchored in bedrock. According to the utility model, the first anchor beam, the second anchor beam and the rear pile foundation are arranged, so that the lengths of the front pile foundation and the rear pile foundation are reduced on the basis of ensuring the front edge distance of the rear pile foundation and ensuring the safety of the abutment, and the construction difficulty is reduced; the bench cap, the front pile foundation, the first anchor beam, the second anchor beam and the rear pile foundation are all of reinforced concrete structures, and the joints are anchored through reinforcing steel bars to be connected, so that effective transmission of force is guaranteed.
Description
Technical Field
The utility model relates to the field of highways, in particular to an abutment structure suitable for a steep slope section in a bedrock area.
Background
During the construction of mountain roads, steep slopes are often encountered, pile-column type abutment is usually arranged on steep slope sections for bedrock areas with good geological conditions, but because the slopes are steep, the front edges of pile foundations are usually small, unloading cracks are often generated on the steep slopes, and the bedrock surfaces can be weathered and peeled off continuously, so that the front edges of the abutment are further reduced, therefore, in order to ensure the safety of the abutment, the requirement that the distance between the bottom ends of piles and the adjacent slope surface is at least 20 meters is met, but the pile length is overlong; in addition, in a steep slope section, the construction working surface is narrow, pile foundation drilling machinery is difficult to place, and mechanical drilling can generate large disturbance to bedrock and adversely affect slope stability; therefore, the construction often adopts the mode of manual hole digging to form the hole, but because the pile length is overlength, the construction risk of manual hole digging is increased.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides the abutment structure which can solve the technical problems of insufficient front edge of the abutment pile foundation, overlong pile length, difficult construction and the like in the steep slope section.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:
the abutment structure comprises a table cap, wherein the lower end of the table cap is connected with a front pile foundation, the rear side of the table cap is connected with a first anchor beam, the rear side of the first anchor beam is connected with a second anchor beam, and the lower end of the second anchor beam is connected with a rear pile foundation; the front pile foundation is positioned at one side close to the side slope, the rear pile foundation is positioned at one side far away from the side slope, and the front pile foundation and the rear pile foundation are both anchored in bedrock; the pile length of the preceding pile foundation of this abutment structure can satisfy the requirement of vertical bearing capacity can, compare in conventional pile column formula abutment, the pile length of preceding pile foundation reduces, although preceding pile foundation bottom front of a garment edge distance is less, but connects back pile foundation through first anchor beam and second anchor beam, the front of a garment edge distance of back pile foundation can reach the requirement, has strengthened the antidumping ability of abutment structure, and the pile length is also not long, and the construction degree of difficulty reduces.
Furthermore, the number of the front pile foundations is at least two, the number of the first anchor beams is at least two, the first anchor beams are all connected to the same second anchor beam, and the number of the rear pile foundations is at least two; the at least two front pile foundations and the at least two rear pile foundations are arranged, so that the lengths of the front pile foundations and the rear pile foundations are reduced on the basis of ensuring the safety of the abutment, and the construction difficulty of the pile foundations is reduced; the at least two first anchor beams are arranged, so that the force borne by a single first anchor beam is reduced, and the force borne by the single first anchor beam is prevented from exceeding the stress limit.
Furthermore, the front pile foundation and the rear pile foundation are both vertically arranged, so that the front pile foundation can bear vertical load generated by a bridge body on the table cap, and construction is facilitated; the bench caps, the first anchor beams and the second anchor beams are horizontally arranged, and construction is facilitated.
Furthermore, the table cap, the front pile foundation, the first anchor beam, the second anchor beam and the rear pile foundation are all of reinforced concrete structures, the mouldability of the reinforced concrete structures is good, and the first anchor beam and the second anchor beam can be poured into corresponding shapes as required; in addition, the reinforced concrete structure has good integrity and good anti-seismic effect.
Further, the reinforcing bar of preceding pile foundation upper end, the reinforcing bar of first anchor beam front end all anchor into the stage cap, and the reinforcing bar of first anchor beam rear end, the reinforcing bar of back pile foundation upper end all anchor into the second anchor beam, guarantee the firm in connection degree of junction, are favorable to the transmission of power.
Furthermore, the front side of the table cap is provided with an L-shaped sinking table for placing the bridge body, so that a mounting position is provided for mounting the bridge body.
The utility model has the beneficial effects that: the front pile foundation is vertically arranged, and bears the vertical load generated by the bridge body on the table cap, so as to provide vertical bearing capacity; the first anchor beam, the second anchor beam and the rear pile foundation are arranged, so that the lengths of the front pile foundation and the rear pile foundation are reduced on the basis of ensuring the front edge distance of the rear pile foundation and ensuring the safety of the abutment, and the construction difficulty is reduced; the platform cap, the front pile foundation, the first anchor beam, the second anchor beam and the rear pile foundation are all of reinforced concrete structures, and joints are anchored and connected through reinforcing steel bars, so that effective transmission of force is guaranteed; the L-shaped sinking platform is arranged on the front side of the platform cap and provides a mounting position for mounting a bridge body.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic structural view of a conventional pile abutment;
the bridge comprises a bridge body 1, a bridge body 2, a platform cap 3, a first anchor beam 4, a rear pile foundation 5, bedrock 6, a front pile foundation, an L-shaped sinking platform 7, and a second anchor beam 8.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the utility model as defined and defined in the appended claims, and all changes that come within the meaning and range of equivalency of the claims are to be embraced therein.
As shown in fig. 1 and 2, the abutment structure suitable for the steep slope section of the bedrock area comprises a table cap 2, wherein the lower end of the table cap 2 is connected with a front pile foundation 6, the rear side of the table cap 2 is connected with a first anchor beam 3, the rear side of the first anchor beam 3 is connected with a second anchor beam 8, and the lower end of the second anchor beam 8 is connected with a rear pile foundation 4; the front pile foundation 6 is positioned at one side close to the side slope, the rear pile foundation 4 is positioned at one side far away from the side slope, and the front pile foundation 6 and the rear pile foundation 4 are both anchored in the bedrock 5; the pile length of the preceding pile foundation 6 of this abutment structure can satisfy the requirement of vertical bearing capacity can, compare in the conventional pile column type abutment shown in fig. 3, the pile length of preceding pile foundation 6 reduces, although preceding pile foundation 6 bottom front of a garment from a garment side is less, but connect back pile foundation 4 through first anchor beam 3 and second anchor beam 8, the front of a garment from a garment side distance of back pile foundation 4 can reach the requirement, the antidumping ability of abutment structure has been strengthened, and the pile length is also not long, the construction degree of difficulty reduces.
As an optional implementation mode, at least two front pile foundations 6 are provided, at least two first anchor beams 3 are provided, the first anchor beams 3 are connected to the same second anchor beam 8, and at least two rear pile foundations 4 are provided; the at least two front pile foundations 6 and the at least two rear pile foundations 4 are arranged, so that the lengths of the front pile foundations 6 and the rear pile foundations 4 are reduced on the basis of ensuring the safety of the abutment, and the construction difficulty of the pile foundations is reduced; the at least two first anchor beams 3 are arranged, the force borne by a single first anchor beam 3 is reduced, and the force borne by the single first anchor beam 3 is prevented from exceeding the stress limit.
As an optional implementation mode, the front pile foundation 6 and the rear pile foundation 4 are both vertically arranged, so that the front pile foundation 6 can bear vertical load generated by the bridge body 1 on the table cap 2, and construction is facilitated; the bench caps 2, the first anchor beams 3 and the second anchor beams 8 are all horizontally arranged, and construction is facilitated.
As an optional implementation manner, the table cap 2, the front pile foundation 6, the first anchor beam 3, the second anchor beam 8 and the rear pile foundation 4 are all of a reinforced concrete structure; the mouldability of the reinforced concrete structure is good, and the first anchor beam 3 and the second anchor beam 8 can be poured into corresponding shapes as required; in addition, the reinforced concrete structure has good integrity and good anti-seismic effect.
As optional implementation mode, the reinforcing steel bars at the upper end of the front pile foundation 6 and the front end of the first anchor beam 3 are anchored into the platform cap 2, the reinforcing steel bars at the rear end of the first anchor beam 3 and the reinforcing steel bars at the upper end of the rear pile foundation 4 are anchored into the second anchor beam 8, the connection firmness degree of the connection part is guaranteed, and force transmission is facilitated.
As an alternative embodiment, an L-shaped sinking platform 7 for placing the bridge beam body 1 is arranged on the front side of the table cap 2, so as to provide an installation position for installing the bridge beam body 1.
Claims (6)
1. The abutment structure suitable for the steep slope section in the bedrock area is characterized by comprising an abutment cap (2), wherein the lower end of the abutment cap (2) is connected with a front pile foundation (6), the rear side of the abutment cap (2) is connected with a first anchor beam (3), the rear side of the first anchor beam (3) is connected with a second anchor beam (8), and the lower end of the second anchor beam (8) is connected with a rear pile foundation (4); preceding pile foundation (6) are located and are close to side slope one side, back pile foundation (4) are located and keep away from side slope one side, preceding pile foundation (6) and back pile foundation (4) all anchor in bedrock (5).
2. Abutment structure suitable for bedrock area steep slope section according to claim 1, characterized in that, the preceding pile foundation (6) has at least two, the first anchor beam (3) all connects on the same second anchor beam (8), the back pile foundation (4) has at least two.
3. Abutment structure suitable for bedrock area steep slope section according to claim 1, characterized in that, preceding pile foundation (6) and back pile foundation (4) all arrange vertically, and abutment cap (2), first anchor beam (3) and second anchor beam (8) all arrange horizontally.
4. Abutment structure suitable for bedrock area abrupt slope section according to claim 1, characterized in that, the bench cap (2), preceding pile foundation (6), first anchor beam (3), second anchor beam (8) and back pile foundation (4) are reinforced concrete structure.
5. The abutment structure suitable for the bedrock area steep slope section according to claim 4, wherein the reinforcing steel bars at the upper end of the front pile foundation (6) and the reinforcing steel bars at the front end of the first anchor beam (3) are anchored into the abutment cap (2), and the reinforcing steel bars at the rear end of the first anchor beam (3) and the reinforcing steel bars at the upper end of the rear pile foundation (4) are anchored into the second anchor beam (8).
6. The abutment structure suitable for the steep slope section in the bedrock area according to claim 1, characterized in that the front side of the abutment cap (2) is provided with an L-shaped sunken platform (7) for placing the bridge girder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121918292.9U CN215887898U (en) | 2021-08-16 | 2021-08-16 | Abutment structure suitable for bedrock area abrupt slope district |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121918292.9U CN215887898U (en) | 2021-08-16 | 2021-08-16 | Abutment structure suitable for bedrock area abrupt slope district |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215887898U true CN215887898U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121918292.9U Active CN215887898U (en) | 2021-08-16 | 2021-08-16 | Abutment structure suitable for bedrock area abrupt slope district |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215887898U (en) |
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2021
- 2021-08-16 CN CN202121918292.9U patent/CN215887898U/en active Active
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