CN218989936U - Underpinning structure for managing disease bodies of road and bridge transition sections - Google Patents
Underpinning structure for managing disease bodies of road and bridge transition sections Download PDFInfo
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- CN218989936U CN218989936U CN202223365253.8U CN202223365253U CN218989936U CN 218989936 U CN218989936 U CN 218989936U CN 202223365253 U CN202223365253 U CN 202223365253U CN 218989936 U CN218989936 U CN 218989936U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The utility model provides a underpinning structure for managing road and bridge transition section disease bodies, belongs to the technical field of road and bridge disease body management, and solves the problem that road sections and discontinuous train operation are required to be blocked for road and bridge disease body management in the prior art. This a underpinning structure for road bridge changeover portion disease body treatment, including two joists and existing track, two the joist below all is provided with firm subassembly, and every group of firm subassembly all includes a plurality of underpinning foundation pile, and a plurality of underpinning foundation pile is column evenly distributed, and underpinning foundation pile passes through the connecting piece to be connected with the joist, and two joists are parallel to each other, and are fixed with the underpinning sleeper between two joists, and existing track is located the underpinning sleeper top. The utility model has the advantages of ensuring the operation safety of the train and ensuring the rapidness and the quality in the existing line underpinning construction.
Description
Technical Field
The utility model belongs to the technical field of road and bridge disease body treatment, and relates to a underpinning structure, in particular to a underpinning structure for treating road and bridge transition section disease bodies.
Background
The bridge abutment is a load-bearing structure for directly supporting the bridge superstructure, and is a joint body for connecting a bridge and a embankment, and plays a very important role in the bridge structure. In a permafrost region, the occurrence environment of permafrost under a roadbed is changed under the influence of acceleration of global climate warming trend and disturbance of long-term dynamic load, so that the sinking phenomenon of a road bridge transition section of the permafrost region is common.
The sinking of road bridge changeover portion often appears uneven deformation, promptly in vertical compression deformation, still receives the embankment yin and yang side permafrost to melt the difference of degree and appear horizontal uneven deformation, receives high cold weather characteristic influence simultaneously, and warm season gathers the ponding behind the platform, then takes place frost heave in cold season, under powerful tangential frost heave force and normal frost heave force, leads to the abutment to take place the slope.
In permafrost areas, aiming at the uneven stress diseases of bridge abutment caused by large deformation of a road bridge transition section, the existing use scheme is that road sections need to be blocked, train operation is interrupted, and replacement construction is carried out, but the operation of the interrupted train can cause huge operation loss, so that the underpinning structure for managing the disease bodies of the road bridge transition section is provided.
The adoption of the overhead underpinning technology is an effective method. In overhead underpinning construction, operation safety of a train is guaranteed, rapidness and quality in existing line underpinning construction are guaranteed, and research, development and use of a reasonable underpinning structure are one of key technologies.
Disclosure of Invention
The utility model aims at solving the problems in the prior art, and provides a underpinning structure for managing disease bodies at a road-bridge transition section, which aims to solve the technical problems that: how to realize the realization of ensuring the operation safety of the train and ensuring the rapidness and the quality in the existing line underpinning construction.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a be used for road bridge changeover portion disease body to administer underpinning structure, includes two joists and existing track, two the joist below all is provided with firm subassembly, and every group of firm subassembly all includes a plurality of underpinning foundation pile, and a plurality of underpinning foundation pile is column evenly distributed, and underpinning foundation pile passes through the connecting piece to be connected with the joist, and two joists are parallel to each other, and are fixed with the underpinning sleeper between two joists, and existing track is located the underpinning sleeper top.
The diameter of the underpinning foundation pile is 0.8m-1.5m.
The working principle of the utility model is as follows: during construction, the plane position of the underpinning foundation pile is determined within the range of 15m-30m along the line direction, a matched small machine or tool mode is adopted from the road shoulder position, manual hole digging is carried out to the upper limit of the permafrost, and the hole digging aperture is 0.8m-1.5m. After the pile hole is formed, a pile is manufactured according to a pile forming process of the reinforced concrete filling pile to form a underpinning foundation pile, then the underpinning girders and the underpinning foundation pile are fixedly connected through connecting pieces, so that the two underpinning girders are parallel and stable, the underpinning sleeper is fixed between the two underpinning girders, and the underpinning sleeper provides supporting force for the existing track, so that in overhead underpinning construction, the operation safety of a train can be ensured, the rapidness and the quality in the existing line underpinning construction can be ensured, and the disease body of the road bridge transition section is effectively treated.
The existing track comprises a bridge abutment, a embankment body, two existing rails and railway ballast, wherein the existing rails are fixedly provided with existing sleepers through existing rail fixing fasteners, the existing sleepers are fixedly connected with the railway ballast, the railway ballast is fixed on the bridge abutment and the embankment body, and the existing rails are in interference with the underpinning sleeper.
By adopting the structure, the defect body position of the road bridge transition section replaces the existing sleeper by the underpinning sleeper to provide supporting force for the existing rail, and the operation safety of the train during construction is effectively ensured.
The joist is box-shaped or I-shaped.
By adopting the structure, the bearing capacity of the joist can be effectively improved by the box-shaped or I-shaped design.
The connecting piece comprises a plurality of bolts, one ends of the bolts are fixedly connected with the underpinning foundation pile, a plurality of bolt holes are formed in the joist, and the other ends of the bolts penetrate through the bolt holes and are in threaded connection with nuts.
By adopting the structure, when the underpinning foundation pile is poured, the bolts are preset in the underpinning foundation pile, one ends of the bolts extend out, the fixed joists can be quickly installed through the arrangement of the bolts and the bolt holes, the construction progress can be effectively improved, and the construction of the follow-up steps is facilitated.
And an abutment protecting cone is arranged between the abutment and the embankment body.
By adopting the structure, the embankment body and the bridge head protection cone can improve the stability of the bridge abutment during construction, thereby ensuring the operation safety of the train during construction.
Compared with the prior art, the underpinning structure for treating the road bridge transition section disease body has the following advantages:
1. during construction, the plane position of the underpinning foundation pile is determined within the range of 15m-30m along the line direction, a matched small machine or tool mode is adopted from the road shoulder position, manual hole digging is carried out to the upper limit of the permafrost, and the hole digging aperture is 0.8m-1.5m. After the pile hole is formed, a pile is manufactured according to a pile forming process of the reinforced concrete filling pile to form a underpinning foundation pile, then the underpinning girders and the underpinning foundation pile are fixedly connected through connecting pieces, so that the two underpinning girders are parallel and stable, the underpinning sleeper is fixed between the two underpinning girders, and the underpinning sleeper provides supporting force for the existing track, so that in overhead underpinning construction, the operation safety of a train can be ensured, the rapidness and the quality in the existing line underpinning construction can be ensured, and the disease body of the road bridge transition section is effectively treated.
2. The defect body position of the road bridge transition section replaces the existing sleeper by the underpinning sleeper to provide supporting force for the existing rail, and the operation safety of the train during construction is effectively ensured.
3. When the underpinning foundation pile is poured, the bolts are preset in the underpinning foundation pile, one ends of the bolts extend out, the fixed joists can be quickly installed through the arrangement of the bolts and the bolt holes, the construction progress can be effectively improved, and the construction of the follow-up steps is facilitated.
4. The setting of embankment body and bridgehead cone can improve the steadiness of abutment when the construction to the operation safety of train when guaranteeing the construction.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a cross-sectional view of the present utility model.
Fig. 3 is a schematic view of the connection structure of the existing rail and the underpinning sleeper in the present utility model.
In the figure, 1, abutment; 2. a embankment body; 3. a bridge head cone protector; 4. existing sleeper; 5. existing rails; 6. underpinning foundation piles; 7. joist; 8. underpinning the sleeper; 10. railway ballast; 11. the existing rail fixing fastener.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 1-3, the underpinning structure for treating the disease body of the road bridge transition section comprises two joists 7 and existing rails, wherein stabilizing assemblies are arranged below the two joists 7, each stabilizing assembly comprises a plurality of underpinning foundation piles 6, the underpinning foundation piles 6 are uniformly distributed in longitudinal columns, the underpinning foundation piles 6 are connected with the joists 7 through connecting pieces, the two joists 7 are parallel to each other, the underpinning sleeper 8 is fixed between the two joists 7, and the existing rails are positioned above the underpinning sleeper 8.
The diameter of the underpinning foundation pile 6 is 0.8m-1.5m.
During construction, the plane position of the underpinning foundation pile 6 is determined within the range of 15m-30m along the line direction, a matched small machine or tool mode is adopted from the road shoulder position, manual hole digging is carried out to the upper limit of the permafrost, and the hole digging aperture is 0.8m-1.5m. After the pile hole is formed, a pile is manufactured according to a pile forming process of the reinforced concrete filling pile to form a underpinning foundation pile 6, then the underpinning girders 7 and the underpinning foundation pile 6 are fixedly connected through connecting pieces, so that the two underpinning girders 7 are parallel and stable, the underpinning sleeper 8 is fixed between the two underpinning girders 7, and the underpinning sleeper 8 provides supporting force for the existing track, so that in overhead underpinning construction, the operation safety of a train can be ensured, the rapidness and the quality in the existing line underpinning construction can be ensured, and the disease body of the bridge transition section can be effectively treated.
The existing track comprises a bridge abutment 1, a embankment body 2, two existing steel rails 5 and railway ballast 10, wherein the existing steel rails 5 are fixedly provided with existing sleeper 4 through existing steel rail fixing fasteners 11, the existing sleeper 4 is fixedly connected with the railway ballast 10, and the railway ballast 10 is fixedly arranged on the bridge abutment 1 and the embankment body 2, and the existing steel rails 5 are in interference with the underpinning sleeper 8.
The position of the road bridge transition section disease body is used for providing supporting force for the existing rail 5 by replacing the existing sleeper 4 through the underpinning sleeper 8, so that the operation safety of the train during construction is effectively ensured.
The joist 7 is box-shaped or I-shaped.
The box or I-shaped design can effectively improve the bearing capacity of the joist 7.
The connecting piece includes a plurality of bolt, and bolt one end and underpinning foundation pile 6 fixed connection have seted up a plurality of key hole on the joist 7, and the other end of bolt passes the key hole and threaded connection has the nut.
When the underpinning foundation pile 6 is poured, the bolts are preset in the underpinning foundation pile 6, one ends of the bolts extend out, the fixed joists 7 can be quickly installed through the arrangement of the bolts and the bolt holes, the construction progress can be effectively improved, and the construction of the follow-up steps is facilitated.
An abutment protecting cone 3 is arranged between the abutment 1 and the embankment body 2.
The setting of embankment body 2 and abutment protection awl 3 can improve the steadiness of abutment 1 when the construction to the operation safety of train when guaranteeing the construction.
The working principle of the utility model is that the plane position of the underpinning foundation pile 6 is determined in the range of 15m-30m along the line direction on the left and right road shoulders of the road embankment of the transition section from the back of the abutment 1, and the position of the road shoulders is manually dug to the upper limit of the permafrost by adopting a matched small machine or tool, and the dug hole diameter is 0.8-1.5 m. After the pile hole is formed, the pile is manufactured according to the pile forming process of the reinforced concrete filling pile, and the underpinning foundation pile 6 is formed. And then, mounting prefabricated joists 7 on the underpinning foundation piles 6 which are already applied on the left side and the right side of the embankment of the transition section, wherein the joists 7 are lapped on the upper part of the bridge abutment 1. The joist 7 is box-shaped or I-shaped, is of an off-line prefabricated steel frame structure, and is designed according to the calculation of train operation load and upper construction load in specific dimensions. In order to ensure the smoothness of the existing steel rail 5 on the joist 7 after construction, the joist 7 is connected with the underpinning foundation pile 6 by adopting a preset bolt in a mode of adjusting elevation by a gasket in the installation process. After the joist 7 is applied according to the design standard, the existing sleeper 4 within the disease curing range can be replaced. Before the existing sleeper 4 is underpinned, the railway ballasts on the upper portion of the joist 7 can be excavated in advance, when the existing sleeper 4 and the existing steel rail 5 are in a loose state, the existing sleeper 4 can be removed one by one, the underpinned sleeper 8 is installed at the position of the existing sleeper 4, and the underpinned sleeper 8 and the joist 7 can be fixedly connected in a welding mode. After the joist 7 and the underpinning sleeper 8 are installed, the working state of each connecting part is checked, and the stability of the connecting parts is checked by means of the actual running test of the train. After ensuring that the safety and stable running of the overhead train are met, the embankment body 2 can be excavated layer by layer, and the bridge head cone protector 3 is excavated along the back of the bridge abutment 1.
In conclusion, through the cooperation of the members such as the underpinning foundation pile 6, the joist 7 and the underpinning sleeper 8, the functions of ensuring the operation safety of a train and ensuring the rapidness and the quality in the underpinning construction of the existing line are realized.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (6)
1. The utility model provides a be used for road bridge changeover portion disease body to administer underpinning structure, includes two joists (7) and existing track, its characterized in that, two joist (7) below all is provided with firm subassembly, and every group of firm subassembly all includes a plurality of underpinning foundation pile (6), and a plurality of underpinning foundation pile (6) are longitudinal column evenly distributed, and underpinning foundation pile (6) are connected with joist (7) through the connecting piece, and two joists (7) are parallel to each other, and are fixed with underpinning sleeper (8) between two joists (7), and existing track is located underpinning sleeper (8) top.
2. The underpinning structure for managing road and bridge transition section disease bodies according to claim 1, wherein the diameter of the underpinning foundation pile (6) is 0.8m-1.5m.
3. The underpinning structure for managing road bridge transition section disease bodies according to claim 1, wherein the existing track comprises a bridge abutment (1), a embankment body (2), two existing rails (5) and railway ballast (10), the existing rails (5) are fixedly provided with existing sleepers (4) through existing rail fixing fasteners (11), the existing sleepers (4) are fixedly connected with the railway ballast (10), and the railway ballast (10) is fixedly arranged on the bridge abutment (1) and the embankment body (2), and the existing rails (5) are in interference with the underpinning sleeper (8).
4. The underpinning structure for managing road and bridge transition section diseases according to claim 1, wherein the joist (7) is box-shaped or I-shaped.
5. The underpinning structure for managing road and bridge transition section diseases according to claim 1, wherein the connecting piece comprises a plurality of bolts, one ends of the bolts are fixedly connected with the underpinning foundation pile (6), a plurality of bolt holes are formed in the joist (7), and the other ends of the bolts penetrate through the bolt holes and are connected with nuts in a threaded mode.
6. A underpinning structure for managing road and bridge transition section disease bodies according to claim 3, characterized in that a bridge head cone (3) is arranged between the bridge abutment (1) and the embankment body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223365253.8U CN218989936U (en) | 2022-12-15 | 2022-12-15 | Underpinning structure for managing disease bodies of road and bridge transition sections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223365253.8U CN218989936U (en) | 2022-12-15 | 2022-12-15 | Underpinning structure for managing disease bodies of road and bridge transition sections |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218989936U true CN218989936U (en) | 2023-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223365253.8U Active CN218989936U (en) | 2022-12-15 | 2022-12-15 | Underpinning structure for managing disease bodies of road and bridge transition sections |
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| Country | Link |
|---|---|
| CN (1) | CN218989936U (en) |
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- 2022-12-15 CN CN202223365253.8U patent/CN218989936U/en active Active
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