CN211815528U - Flexible abutment pile foundation suitable for abutment rigid frame bridge - Google Patents
Flexible abutment pile foundation suitable for abutment rigid frame bridge Download PDFInfo
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- CN211815528U CN211815528U CN202020022561.2U CN202020022561U CN211815528U CN 211815528 U CN211815528 U CN 211815528U CN 202020022561 U CN202020022561 U CN 202020022561U CN 211815528 U CN211815528 U CN 211815528U
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Abstract
The invention relates to a flexible bridge abutment pile foundation suitable for a rigid bridge abutment, which comprises a pile foundation body, wherein the upper end of the pile foundation body is connected with a main bridge abutment, the pile foundation body and the main bridge abutment are integrally cast and molded, a plurality of vertically arranged steel bars are welded on a steel reinforcement cage in the pile foundation body, the periphery of the steel bars is uniformly distributed, the upper ends of the steel bars are welded with the steel reinforcement cage of the main bridge abutment, a steel sleeve is sleeved on the upper part of the steel bars, a damper is arranged at the upper part in the steel sleeve, a spring is arranged at the inner lower part in the steel sleeve, the spring and the damper are radially arranged along the steel sleeve, the periphery of the spring and the damper are uniformly distributed, the spring corresponds to the damper one by one, the outer ends of the spring and the damper are welded and fixed with the steel sleeve, and the inner ends of the spring and the damper are welded and fixed with the steel.
Description
Technical Field
The invention relates to a flexible abutment pile foundation suitable for an abutment rigid frame bridge.
Background
Compared with the traditional bridge with expansion joints, the integral bridge has the following advantages: the design and construction process is simple and quick, the design, construction, maintenance and replacement costs of the expansion joint and the support are saved, and the cost of the whole life cycle is low; the influence of the processes of maintenance, maintenance and the like on traffic and noise pollution caused by the telescopic device are reduced; the integrity, the continuity and the redundancy of the structure are increased, so that the whole bridge has good performance of resisting the destructive effects of earthquake, vehicle overload, hull impact and the like, and the disaster resistance of the bridge is improved. The expansion joint and the expansion device are omitted at the abutment of the integral bridge, and the upper structure and the abutment are connected into a whole. Under the action of automobile braking force, temperature, earthquake and the like, the upper structure can generate reciprocating deformation in the longitudinal bridge direction, the longitudinal deformation mainly adopts a flexible pile foundation to absorb the deformation transmitted by the upper structure, but only a pile foundation is used for absorbing the telescopic deformation of the upper structure, and the length of a main beam of the seamless bridge is limited, so that the seamless bridge is only suitable for small and medium span bridges.
Disclosure of Invention
The invention provides a flexible abutment pile foundation suitable for an abutment rigid frame bridge.
The flexible bridge abutment pile foundation comprises a pile foundation body, the upper end of the pile foundation body is connected with a main bridge abutment, the pile foundation body and the main bridge abutment are integrally cast, a steel plate is vertically arranged in the middle of the pile foundation body, the upper portion of the steel plate extends out of the pile foundation body, the lower portion of the steel plate is welded with a reinforcement cage in the pile foundation body, a plurality of steel rods are uniformly distributed on the circumference of the steel rods, the upper ends of the steel rods are welded with the reinforcement cage of the main bridge abutment, a steel sleeve is sleeved on the upper portion of the steel rods, a damper is arranged on the upper portion in the steel sleeve, a spring is arranged on the inner lower portion of the steel sleeve, the spring and the damper are radially arranged along the steel sleeve, the spring and the damper are uniformly distributed on the circumference of the spring and the damper, the outer ends of the spring and the damper are welded and fixed with the steel sleeve.
Further, main abutment is thin wall main abutment, and the thin wall main abutment outside is provided with the secondary abutment, the secondary abutment is installed subaerial, and the flexible main abutment tip of thin wall supports through the pile foundation body, and the regional upper portion in the flexible main abutment of thin wall and secondary abutment enclosure is sealed through the guide beam, and the regional intussuseption in the flexible main abutment of thin wall and secondary abutment enclosure is filled with the light material.
Furthermore, a main beam is arranged on one side of the leading beam, an attachment strap is arranged on the other side of the leading beam, the lower part of the connecting side of the leading beam and the attachment strap is supported by a secondary bridge abutment, the end of the main beam connected with the leading beam is supported by the upper end of the thin-wall flexible main bridge abutment, and a bracket is arranged below the leading beam at the end of the main beam connected with the leading beam.
Furthermore, an expansion joint is arranged between the guide beam and the butt strap.
Furthermore, sliding layers are arranged between the guide beam and the secondary bridge abutment and between the butt strap and the secondary bridge abutment.
Compared with the prior art, the invention has the following beneficial effects: the structure is simple, the design is reasonable, the construction is convenient, and the deformation capacity and the bridge length limit value of the seamless bridge are improved.
Drawings
The invention is further described with reference to the following figures.
FIG. 1 is a schematic structural diagram of a rigid frame bridge of an abutment;
fig. 2 is a schematic view of a connection structure of the steel sleeve and the steel rod.
In the figure: 1-a main beam; 2-a draw beam; 3-thin-walled main abutment; 4-a steel bar; 5-pile foundation body; 6-conical slope; 7-construction joint; 8-bracket; 9-expansion joint; 10-a slip layer; 11-secondary abutment; 12-a light weight material; 13-a butt strap; 14-a bolster; 15-wiring road surface; 16-backfilling; 17-a damper; 18-a spring; 19-steel sleeve.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in figures 1-2, a flexible bridge abutment pile foundation suitable for a rigid bridge abutment comprises a pile foundation body, the upper end of which is connected with a main bridge abutment, the pile foundation body and the main bridge abutment are integrally cast and formed, a steel plate is vertically arranged in the middle of the pile foundation body, the upper part of the steel plate extends out of the pile foundation body, the lower part of the steel plate is welded with a steel reinforcement cage in the pile foundation body, a plurality of steel rods are uniformly distributed on the circumference, the upper end of each steel rod is welded with the steel reinforcement cage of the main bridge abutment, a steel sleeve is sleeved on the upper part of each steel rod, a damper is arranged on the upper part in the steel sleeve, a spring is arranged on the lower part in the steel sleeve, the spring and the damper are arranged along the radial direction of the steel sleeve, a plurality of springs and dampers are uniformly distributed on the circumference, the springs and the dampers are in one-to-one correspondence, the outer ends of the springs and the, the spring acts to increase structural deformation.
In this embodiment, the main abutment is a flexible abutment having a width equal to the diameter of the pile foundation.
In this embodiment, the steel sleeve is pre-buried in pile bolck upper portion, plays the effect in headspace, is convenient for install attenuator and spring and concrete placement.
In this embodiment, main abutment is thin wall main abutment, and the thin wall main abutment outside is provided with the secondary abutment, the secondary abutment is installed subaerial, and the flexible main abutment tip of thin wall supports through the pile foundation body, and the regional upper portion in the flexible main abutment of thin wall and secondary abutment wall city is sealed through the guide beam, and the regional intussuseption in the flexible main abutment of thin wall and secondary abutment wall city is filled with the light material.
In this embodiment, a main beam is arranged on one side of the leading beam, an attachment strap is arranged on the other side of the leading beam, the lower part of the connecting side of the leading beam and the attachment strap is supported by a secondary bridge abutment, the upper end of the thin-wall flexible main bridge abutment supports the end of the main beam connected with the leading beam, and a bracket is arranged below the leading beam at the end of the main beam connected with the leading beam.
In this embodiment, an expansion joint is arranged between the draw beam and the butt strap.
In the embodiment, a sliding layer is arranged between the guide beam and the secondary bridge abutment and between the butt strap and the secondary bridge abutment.
The construction steps are as follows: (1) pre-drilling; (2) welding a reinforcement cage of the pile foundation and a steel bar together; (3) placing the welded steel reinforcement cage and the welded steel bar into the drilled hole; (4) installing a damper and a spring in the steel sleeve; (5) mounting a steel sleeve at the upper end of the steel bar, and connecting the damper and the spring with the steel bar; (6) welding the upper end of the steel bar with a main bridge abutment reinforcement cage; (7) and (5) pouring a flexible main abutment.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like 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 flexible abutment pile foundation suitable for the abutment rigid frame bridge comprises a pile foundation body of which the upper end is connected with a main abutment, and is characterized in that the pile foundation body and the main abutment are integrally cast and formed, a steel plate is vertically arranged in the middle of the inside of a pile basic body, the upper portion of the steel plate extends out of the pile foundation body, the lower portion of the steel plate is welded with a reinforcement cage inside the pile foundation body, a plurality of steel rods are uniformly distributed on the circumference of each steel rod, the upper end of each steel rod is welded with the reinforcement cage of the main abutment, a steel sleeve is sleeved on the upper portion of each steel rod, a damper is arranged on the upper portion inside the steel sleeve, a spring is arranged on the lower portion inside the steel sleeve, the springs and the dampers are radially arranged along the steel sleeve, the springs and the dampers are uniformly distributed on the circumference of each damper, the springs and the dampers correspond.
2. The flexible abutment pile foundation suitable for the abutment rigid frame bridge according to claim 1, wherein: the main abutment is thin-walled main abutment, and the thin-walled main abutment outside is provided with the secondary abutment, the secondary abutment is installed subaerial, and the flexible main abutment tip of thin wall supports through the pile foundation body, and the regional upper portion in the flexible main abutment of thin wall and secondary abutment besieged city seals through the drainage beam, and the regional intussuseption in the flexible main abutment of thin wall and the secondary abutment besieged city is filled with the light material.
3. The flexible abutment pile foundation suitable for the abutment rigid frame bridge according to claim 2, wherein: one side of the leading beam is provided with a main beam, the other side of the leading beam is provided with an attachment strap, the lower part of the connecting side of the leading beam and the attachment strap is supported by a secondary bridge abutment, the upper end of the thin-wall flexible main bridge abutment supports the end of the main beam connected with the leading beam, and the end of the main beam connected with the leading beam is provided with a bracket below the leading beam.
4. A flexible abutment pile foundation suitable for an abutment rigid frame bridge according to claim 3, wherein: and an expansion joint is arranged between the leading beam and the butt strap.
5. A flexible abutment pile foundation suitable for an abutment rigid frame bridge according to claim 3, wherein: and sliding layers are arranged between the guide beam and the secondary abutment and between the butt strap and the secondary abutment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020022561.2U CN211815528U (en) | 2020-01-07 | 2020-01-07 | Flexible abutment pile foundation suitable for abutment rigid frame bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020022561.2U CN211815528U (en) | 2020-01-07 | 2020-01-07 | Flexible abutment pile foundation suitable for abutment rigid frame bridge |
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| Publication Number | Publication Date |
|---|---|
| CN211815528U true CN211815528U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020022561.2U Expired - Fee Related CN211815528U (en) | 2020-01-07 | 2020-01-07 | Flexible abutment pile foundation suitable for abutment rigid frame bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2610859A (en) * | 2021-09-20 | 2023-03-22 | Laing Orourke Plc | Flexible bridge abutment |
-
2020
- 2020-01-07 CN CN202020022561.2U patent/CN211815528U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2610859A (en) * | 2021-09-20 | 2023-03-22 | Laing Orourke Plc | Flexible bridge abutment |
| WO2023041750A1 (en) * | 2021-09-20 | 2023-03-23 | Laing O'rourke Plc | Flexible bridge abutment |
| GB2610859B (en) * | 2021-09-20 | 2024-02-07 | Laing Orourke Plc | Flexible bridge abutment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201030 Termination date: 20220107 |