CN214939190U - Combined bridge abutment applicable to poor geological conditions - Google Patents
Combined bridge abutment applicable to poor geological conditions Download PDFInfo
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- CN214939190U CN214939190U CN202120514957.3U CN202120514957U CN214939190U CN 214939190 U CN214939190 U CN 214939190U CN 202120514957 U CN202120514957 U CN 202120514957U CN 214939190 U CN214939190 U CN 214939190U
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Abstract
The utility model discloses a combined abutment suitable for geological conditions is relatively poor, including abutment and the roof beam body and the bridge floor of arranging on the abutment, the abutment includes pile foundation and the abutment body of arranging at the pile foundation top, and the pile foundation stretches into below the ground line, and the side of abutment is arranged with the retaining wall of certain distance apart, is filled with the packing layer between retaining wall and the bridge floor; the retaining wall comprises a horizontal section and a vertical section arranged on the horizontal section, the horizontal section is buried below a ground line, and the vertical section extends out of the ground line; the retaining wall is arranged at a certain distance beside the abutment, so that the pile foundation of the abutment does not bear the horizontal force of the rock-soil body, only the vertical load transmitted from the beam body is borne, the number of pile foundation arrangement is greatly reduced, only one row of pile foundations is arranged in the longitudinal bridge direction, the construction cost is greatly reduced, the construction period is shortened, and the stability of the abutment can be ensured; in addition, the retaining wall does not bear the vertical load transmitted by the beam body, only bears the level of the rock-soil body, has lower requirement on the geology and has stronger universality.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering technique and specifically relates to a be applicable to the relatively poor combination formula abutment of geology situation.
Background
The bridge refers to a building which is erected for spanning mountain stream, unfavorable geology or meeting other traffic needs and enables the traffic to be more convenient. The abutment is an important structure for supporting the superstructure of the bridge and engaging with the roadbed. The main function is to support the load of the upper structure of the bridge, and has the functions of resisting the filling pressure behind the abutment, stabilizing the bridge head roadbed and leading the bridge head roadbed and the bridge structure to be reliably and stably connected.
At present, conventional bridge abutments comprise gravity type masonry bridge abutments, light bridge abutments and the like, but the conventional bridge abutments have high requirements on geological conditions and need protection of bridge abutment cone slopes. When the bridge abutment is high and has poor geology or wades, pile group foundations are generally adopted at present to resist the horizontal force of a roadbed soil body or avoid the foundation from being hollowed by water flow, but the investment of the pile foundations and bearing platforms is large, and the pile foundation and the bearing platforms are particularly wasted for highway construction in western mountain areas. It can be seen that conventional abutments all have certain limitations.
SUMMERY OF THE UTILITY MODEL
Big and traditional abutment of road surface construction bridge investment that is relatively poor to traditional geology has the technical problem of limitation, the utility model provides a be applicable to the relatively poor combination formula abutment of geology situation.
The utility model adopts the technical proposal that: the combined abutment suitable for the poor geological condition comprises an abutment, and a beam body and a bridge floor which are arranged on the abutment, wherein the abutment comprises a pile foundation and an abutment body arranged at the top of the pile foundation, the pile foundation extends below a ground line, retaining walls are arranged beside the abutment at certain intervals, and a packing layer is filled between the retaining walls and the bridge floor; the retaining wall comprises a horizontal section and a vertical section arranged on the horizontal section, wherein the horizontal section is buried below a ground line, and the vertical section extends out of the ground line. The bridge abutment is the main atress structure, and its vertical load that bears the roof beam body and transmit to the pile foundation by the platform cap and undertake. The retaining wall is arranged at the side of the abutment at a certain distance, namely the retaining wall and the abutment are mutually isolated, so that the pile foundation of the abutment does not bear the horizontal force of the rock-soil body, and only the vertical load transmitted by the beam body is borne, the number of pile foundation arrangement is greatly reduced, only one row of pile foundations is arranged in the longitudinal bridge direction, the construction cost is greatly reduced, the construction period is shortened, and the stability of the abutment can be ensured; in addition, the retaining wall does not bear the vertical load transmitted by the beam body, only bears the level of the rock-soil body, has lower requirement on the geology and has stronger universality.
Furthermore, the vertical section is provided with an anchor bar, one end of the anchor bar is connected with the vertical section, and the other end of the anchor bar is connected with the packing layer. The anchor bars play a reinforcing role in the retaining wall and enhance the stability of the retaining wall.
Furthermore, the top of the packing layer is provided with a butt strap, and the packing layer is connected with the bridge deck through the butt strap. The lapping plate plays a role in leveling the top of the packing layer and is used for transmitting the force applied by the bridge deck.
Furthermore, the retaining wall is made of reinforced concrete, and is simple in construction, high in strength and low in cost.
Furthermore, the packing layer is made of broken stones, so that the cost is low and the materials are easy to obtain.
The utility model has the advantages that: the retaining wall is arranged at a certain distance beside the abutment, so that the pile foundation of the abutment does not bear the horizontal force of the rock-soil body, only the vertical load transmitted from the beam body is borne, the number of pile foundation arrangement is greatly reduced, only one row of pile foundations is arranged in the longitudinal bridge direction, the construction cost is greatly reduced, the construction period is shortened, and the stability of the abutment can be ensured; in addition, the retaining wall does not bear the vertical load transmitted by the beam body, only bears the level of the rock-soil body, has lower requirement on the geology and has stronger universality.
Drawings
Fig. 1 is a front elevation view of the present invention.
Fig. 2 is a longitudinal sectional view of the present invention.
Fig. 3 is a plan view of the present invention.
Labeled as: 1. an abutment; 2. a beam body; 3. a bridge deck; 4. a retaining wall; 5. a filler layer; 6. anchoring ribs; 7. a butt strap; 8. a ground line; 101. a pile foundation; 102. a platform body; 401. a horizontal segment; 402. a vertical section.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1, 2 and 3, the utility model discloses a combined abutment suitable for geology situation is relatively poor, including abutment 1 and the roof beam body 2 and the bridge floor 3 of arranging on the abutment, abutment 1 includes pile foundation 101 and arranges the abutment body 102 at the pile foundation top, and pile foundation 101 stretches into below the ground line 8, and the side of abutment is arranged with retaining wall 4 of certain distance apart, is filled with packing layer 5 between retaining wall and the bridge floor; the retaining wall 4 includes a horizontal section 401 and a vertical section 402 disposed on the horizontal section, the horizontal section 401 being buried below the ground line 8, and the vertical section 402 extending above the ground line 8. The bridge abutment is the main atress structure, and its vertical load that bears the roof beam body and transmit to the pile foundation by the platform cap and undertake. The retaining wall is arranged at the side of the abutment at a certain distance, namely the retaining wall and the abutment are mutually isolated, so that the pile foundation of the abutment does not bear the horizontal force of the rock-soil body, and only the vertical load transmitted by the beam body is borne, the number of pile foundation arrangement is greatly reduced, only one row of pile foundations is arranged in the longitudinal bridge direction, the construction cost is greatly reduced, the construction period is shortened, and the stability of the abutment can be ensured; in addition, the retaining wall does not bear the vertical load transmitted by the beam body, only bears the level of the rock-soil body, has lower requirement on the geology and has stronger universality.
Referring to fig. 2, in this embodiment, the anchor bars 6 are disposed on the vertical section, and one end of each anchor bar is connected to the vertical section and the other end is connected to the packing layer. The anchor bars play a reinforcing role in the retaining wall and enhance the stability of the retaining wall.
Referring to fig. 2, the present embodiment is provided with a bridge plate 7 on top of the packing layer 5, through which the packing layer is connected to the deck. The lapping plate plays a role in leveling the top of the packing layer and is used for transmitting the force applied by the bridge deck.
Retaining wall 4 of this embodiment is made by reinforced concrete, and the construction is simple, intensity is high, with low costs.
The packing layer 5 of this embodiment is the rubble, and is with low costs, and it is easy to draw materials.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The combined type bridge abutment suitable for the poor geological condition comprises a bridge abutment (1), a beam body (2) and a bridge floor (3), wherein the beam body (2) and the bridge floor are arranged on the bridge abutment, the bridge abutment (1) comprises a pile foundation (101) and a bridge body (102) arranged at the top of the pile foundation, the pile foundation (101) extends to the position below a ground line (8), and the combined type bridge abutment is characterized in that,
retaining walls (4) are arranged beside the abutment at certain intervals, and a packing layer (5) is filled between each retaining wall and the bridge floor;
the retaining wall (4) comprises a horizontal section (401) and a vertical section (402) arranged on the horizontal section, wherein the horizontal section (401) is buried below a ground line (8), and the vertical section (402) extends out of the ground line (8).
2. Combined abutment for poorly defined geological conditions, according to claim 1, wherein the vertical section is provided with anchor bars (6) connected to the vertical section at one end and to the packing layer at the other end.
3. The modular abutment for geological conditions as claimed in claim 1, wherein said packing (5) is provided at the top with a bridge (7) through which the packing is connected to the deck.
4. A modular abutment for poorly defined geological conditions, as claimed in claim 1, wherein said retaining wall (4) is made of reinforced concrete.
5. A modular abutment for poorly defined geological conditions, according to claim 1, wherein said packing (5) is crushed stone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120514957.3U CN214939190U (en) | 2021-03-11 | 2021-03-11 | Combined bridge abutment applicable to poor geological conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120514957.3U CN214939190U (en) | 2021-03-11 | 2021-03-11 | Combined bridge abutment applicable to poor geological conditions |
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| Publication Number | Publication Date |
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| CN214939190U true CN214939190U (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120514957.3U Active CN214939190U (en) | 2021-03-11 | 2021-03-11 | Combined bridge abutment applicable to poor geological conditions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508042A (en) * | 2022-02-16 | 2022-05-17 | 广东省冶金建筑设计研究院有限公司 | Variable-section bridge abutment and construction method |
-
2021
- 2021-03-11 CN CN202120514957.3U patent/CN214939190U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508042A (en) * | 2022-02-16 | 2022-05-17 | 广东省冶金建筑设计研究院有限公司 | Variable-section bridge abutment and construction method |
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