Structure for protecting current bridge pier in center of channel

Abstract

The utility model relates to a structure for protecting a current bridge pier in the center of a channel, which comprises a protected bridge pile, an upper bridge pier and a bridge, first support piles and second support piles are respectively arranged on two sides of the channel in rows, and a circle of third support piles are arranged on the outer contour of the bridge pile. A first top beam, a second top beam and a third top beam are arranged at the tops of the first supporting pile, the second supporting pile and the third supporting pile correspondingly, and a first hidden beam, a second hidden beam and a third hidden beam are arranged at the positions, close to the first supporting pile, the second supporting pile and the third supporting pile, of the two sides of the bottom of the channel correspondingly. The supporting piles on the outer side of the bridge pile can prevent water flow scouring, the straining beams, the first hidden supports and the second hidden supports are used for cooperatively protecting the protected bridge pile and the bridge pier, deformation of a bridge structure can be reduced to the maximum extent, the hidden supports and the hidden beams are located below a channel, and the size of an overflowing section of the channel is not affected; and the drainage function of the channel is considered on the basis of ensuring the safety of the bridge structure.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge protection, in particular to a structure for protecting existing bridge piers in the center of a channel. Background Art

[0002] With the development of cities, the demand for urban flood control and drainage is increasing. Due to the limitation of urban land use, many newly built urban drainage channels need to pass by important existing buildings such as elevated bridge structures. The requirements for deformation of elevated bridge structures are extremely strict. If they are not well controlled, the safety of the bridge itself and the vehicles on it may be endangered. Therefore, a variety of protective measures need to be taken during the construction of channel projects to ensure the safety of the bridge structure. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a structure for protecting the existing bridge piers in the center of a channel in view of the deficiencies of the above-mentioned prior art.

[0004] The utility model provides a technical solution to the above-mentioned technical problems as follows: a structure for protecting the existing bridge piers in the center of a channel, comprising protected bridge piles, upper bridge piers and bridges, first supporting piles and second supporting piles are arranged in rows on both sides of the channel, a circle of third supporting piles is arranged on the outer contour of the bridge piles, first crown beams, second crown beams and third crown beams are arranged on the tops of the first supporting piles, the second supporting piles and the third supporting piles, respectively, a tension beam is arranged in the middle area surrounded by the third crown beam, first hidden beams, second hidden beams and third hidden beams are arranged on both sides of the channel bottom at positions adjacent to the first supporting piles, the second supporting piles and the third supporting piles, respectively, the first hidden beams and the third hidden beams are connected by first hidden supports arranged at intervals, and the second hidden beams and the third hidden beams are connected by second hidden supports arranged at intervals.

[0005] The beneficial effects of the utility model are as follows: the utility model has a structure for protecting the existing bridge piers in the center of the channel, and the outer supporting piles of the protected bridge piles are closed on the plane to form a whole, the force is more stable, and it can prevent water erosion. The tension beam, the first hidden support and the second hidden support are used to coordinately protect the protected bridge piles and piers, which can minimize the deformation of the bridge structure. The hidden supports and hidden beams are both located below the channel and do not affect the cross-sectional size of the channel. The drainage function of the channel is taken into account on the basis of ensuring the safety of the bridge structure.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows:

[0007] Further: the third crown beam and the third hidden beam are arranged in a closed ring on a horizontal plane.

[0008] The beneficial effect of the above further scheme is: by setting the third crown beam and the third hidden beam in a ring-shaped closure, the whole can be stressed at the same time, and the supporting piles wrap the bridge piles and the surrounding soil into a whole, with large overall rigidity and better stress state, avoiding concentrated stress, and also meeting the requirements of pile center distance.

[0009] Further: the annular whole formed by the third crown beam and the third hidden beam in the horizontal plane is respectively set to be an arc shape at the water-facing end and the water-receiving end.

[0010] The beneficial effect of the above further solution is: by setting the two ends of the third crown beam and the third hidden beam to be arc-shaped, the water flow resistance can be reduced, so that the channel water flow shape is better.

[0011] Further: the first crown beam, the second crown beam and the third crown beam are respectively the same in size as the first hidden beam, the second hidden beam and the third hidden beam, and the tension beam is respectively the same in size as the first hidden support and the second hidden support.

[0012] The beneficial effect of the above further scheme is: by making the first crown beam, the second crown beam and the third crown beam the same size as the first hidden beam, the second hidden beam and the third hidden beam respectively, and making the tension beam the same size as the first hidden support and the second hidden support respectively, the size of the processed template can be made consistent and can be reused, thereby reducing production costs and facilitating construction.

[0013] Further: the tension beam is arranged alternately with the first hidden support and the second hidden support on the plane.

[0014] The beneficial effect of the above further scheme is: by arranging the tension beam and the first hidden support and the second hidden support alternately on the plane, the tension beam and the first hidden support and the second hidden support can be subjected to force synergistically, so that the pier structure and the channel structure are connected as one, which can minimize the deformation of the pier.

[0015] Further: the first crown beam, the second crown beam, the third crown beam, the first hidden beam, the second hidden beam, the third hidden beam, the tension beam, the first hidden support and the second hidden support are all reinforced concrete structures.

[0016] The beneficial effects of the above further scheme are: the use of reinforced concrete structure is convenient for construction, and the structural strength can be guaranteed, which can effectively reduce the deformation in the subsequent force-bearing process and ensure the stability of the overall structure.

[0017] Further: a protective surface is arranged on the inner wall of the channel, and a channel bottom lining is arranged on the bottom of the channel.

[0018] The beneficial effect of the above further scheme is: by setting the protective surface, the water flow of the channel can be prevented from scouring the first supporting pile, the second supporting pile and the third supporting pile, further ensuring the stability of the soil on both sides of the channel, and setting the channel bottom lining can prevent the water flow of the channel from scouring the bottom of the channel, ensuring the stability of the bottom structure of the channel.

[0019] Further: a first temporary steel pipe support is arranged between the first crown beam and the third crown beam, and a second temporary steel pipe support is arranged between the second crown beam and the third crown beam.

[0020] The beneficial effect of the above further scheme is that by setting the first temporary steel pipe support and the second temporary steel pipe support, the safety during the channel excavation process is guaranteed and the installation and removal are convenient, and the channel flow rate is not affected after removal.

[0021] Further: two ends of the first temporary steel pipe support are welded to the first crown beam and the third crown beam respectively, and two ends of the second temporary steel pipe support are welded to two ends of the second crown beam and the third crown beam respectively.

[0022] The beneficial effect of the above further scheme is: by welding the two ends of the first temporary steel pipe support to the first crown beam and the third crown beam respectively, and welding the two ends of the second temporary steel pipe support to the two ends of the second crown beam and the third crown beam respectively, it can be ensured that the first crown beam and the third crown beam, as well as the second crown beam and the third crown beam are well supported during construction, reducing the deformation of the piers during the channel construction, and at the same time, all hidden supports and hidden beams can be removed when they reach the design strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic plan view of a structure for protecting the existing bridge pier in the center of a channel according to an embodiment of the utility model;

[0024] Figure 2 A cross-sectional schematic diagram of the implementation process of the structure for protecting the existing bridge pier in the center of a channel according to an embodiment of the utility model;

[0025] Figure 3 It is a cross-sectional schematic diagram of a structure for protecting the existing bridge pier in the center of a channel after implementation of an embodiment of the utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 01. Bridge piles, 02. Bridge piers, 03. Bridge, 11. First supporting piles, 12. Second supporting piles, 13. Third supporting piles, 14. First crown beam, 15. Second crown beam, 16. Third crown beam, 17. Tension beam, 18. First hidden beam, 19. Second hidden beam, 20. Third hidden beam, 21. First hidden support, 22. Second hidden support, 23. Face protection, 24. Channel bottom lining, 25. First temporary steel pipe support, 26. Second temporary steel pipe support. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] like Figures 1 to 3 As shown, a structure for protecting the existing bridge piers in the center of a channel comprises a protected bridge pile 01, an upper bridge pier 02 and a bridge 03, first supporting piles 11 and second supporting piles 12 are arranged in rows on both sides of the channel, a circle of third supporting piles 13 is arranged on the outer contour of the bridge pile 01, first crown beams 14, second crown beams 15 and third crown beams 16 are arranged on the tops of the first supporting piles 11, the second supporting piles 12 and the third supporting piles 13, a tension beam 17 is arranged in the middle area surrounded by the third crown beam 16, first hidden beams 18, second hidden beams 19 and third hidden beams 20 are arranged on both sides of the channel bottom adjacent to the first supporting piles 11, the second supporting piles 12 and the third supporting piles 13, the first hidden beams 18 and the third hidden beams 20 are connected by first hidden supports 21 arranged at intervals, and the second hidden beams 19 and the third hidden beams 20 are connected by second hidden supports 22 arranged at intervals.

[0030] In one or more embodiments of the utility model, the third crown beam 16 and the third hidden beam 20 are arranged in a closed ring on the horizontal plane. By arranging the third crown beam 16 and the third hidden beam 20 in a closed ring, the whole can be stressed at the same time, and the supporting piles wrap the bridge piles and the surrounding soil into a whole, which has a large overall rigidity, a better stress state, avoids concentrated stress, and also meets the requirements of the pile center distance.

[0031] Optionally, in one or more embodiments of the utility model, the annular whole formed by the third crown beam 16 and the third hidden beam 20 in the horizontal plane is respectively set to be an arc shape at the water-facing end and the water-receiving end. By setting the ends of the third crown beam 16 and the third hidden beam 20 to be arc-shaped, the water flow resistance can be reduced, so that the channel water flow shape is better.

[0032] In one or more embodiments of the present invention, the bridge pile 01 is a friction pile or an end-bearing pile.

[0033] It should be additionally pointed out that in one or more embodiments of the present invention, the horizontal distance between the third support pile 13 and the bridge pile 01 should be determined according to the type of the bridge pile 01. When the bridge pile 01 is a friction pile, the horizontal distance between the third support pile 13 and the bridge pile 01 should be no less than 3 times the diameter of the bridge pile. When the bridge pile 01 is an end-bearing pile, the horizontal distance between the third support pile 13 and the bridge pile 01 should be no less than 2.5 times the diameter of the bridge pile. This is to prevent the third support pile 13 from affecting the bridge pile 01 during construction and to ensure that each pile body effectively exerts its bearing capacity.

[0034] In one or more embodiments of the utility model, the first crown beam 14, the second crown beam 15 and the third crown beam 16 are respectively the same size as the first hidden beam 18, the second hidden beam 19 and the third hidden beam 20, and the tension beam 17 is respectively the same size as the first hidden support 21 and the second hidden support 22. By making the first crown beam 14, the second crown beam 15 and the third crown beam 16 the same size as the first hidden beam 18, the second hidden beam 19 and the third hidden beam 20, and making the tension beam 17 the same size as the first hidden support 21 and the second hidden support 22, the size of the processing template can be consistent, which can be reused, reducing production costs, and facilitating construction.

[0035] More preferably, the sizes of the first crown beam 14, the second crown beam 15, the third crown beam 16, the first hidden beam 18, the second hidden beam 19 and the third hidden beam 20 are all the same.

[0036] Optionally, in one or more embodiments of the utility model, the tension beam 17 is staggered with the first concealed support 21 and the second concealed support 22 on a plane. By staggering the tension beam 17 with the first concealed support 21 and the second concealed support 22 on a plane, the tension beam 17 and the first concealed support 21 and the second concealed support 22 can be coordinated to bear force, so that the pier structure and the channel structure are connected as one, and the deformation of the pier can be minimized.

[0037] In practice, the horizontal distance between the tension beam 17 and the first hidden support 21 and the second hidden support 22 is 7-8 m.

[0038] In one or more embodiments of the utility model, the first crown beam 14, the second crown beam 15, the third crown beam 16, the first hidden beam 18, the second hidden beam 19, the third hidden beam 20, the tension beam 17, the first hidden support 21 and the second hidden support 22 are all reinforced concrete structures. The reinforced concrete structure is convenient for construction, and the structural strength can be guaranteed, which can effectively reduce the deformation in the subsequent force process and ensure the stability of the overall structure.

[0039] In one or more embodiments of the utility model, the inner side wall of the channel is provided with a protective surface 23, and the bottom of the channel is provided with a channel bottom lining 24. By providing the protective surface 23, the water flow of the channel can be prevented from scouring the first supporting pile 11, the second supporting pile 12 and the third supporting pile 13, further ensuring the stability of the soil on both sides of the channel, and the channel bottom lining 24 can be provided to prevent the water flow of the channel from scouring the bottom of the channel, ensuring the stability of the bottom structure of the channel.

[0040] In one or more embodiments of the utility model, a first temporary steel pipe support 25 is provided between the first crown beam 14 and the third crown beam 16, and a second temporary steel pipe support 26 is provided between the second crown beam 15 and the third crown beam 16. By providing the first temporary steel pipe support 25 and the second temporary steel pipe support 26, safety during channel excavation is ensured, and installation and removal are convenient, and the channel flow rate is not affected after removal.

[0041] In one or more embodiments of the utility model, the two ends of the first temporary steel pipe support 25 are respectively welded to the first crown beam 14 and the third crown beam 16, and the two ends of the second temporary steel pipe support 26 are respectively welded to the two ends of the second crown beam 15 and the third crown beam 16. By welding the two ends of the first temporary steel pipe support 25 to the first crown beam 14 and the third crown beam 16, and the two ends of the second temporary steel pipe support 26 to the two ends of the second crown beam 15 and the third crown beam 16, it can be ensured that the first crown beam 14 and the third crown beam 16, as well as the second crown beam 15 and the third crown beam 16 are well supported during construction, reducing the deformation of the bridge pier during the channel construction, and all the hidden supports and hidden beams can be removed when they reach the designed strength.

[0042] The utility model provides a new channel support structure adjacent to important buildings and structures, and the specific construction includes the following steps:

[0043] ① Collect design data of existing bridges and determine the pile foundation type of bridge pile 01.

[0044] ② Determine the center distance between the third support pile 13 and the bridge pile 01 according to the pile foundation type of the bridge pile 01.

[0045] ③ Construct the first supporting pile 11, the second supporting pile 12 and the third supporting pile 13 in sequence.

[0046] ④ Construct the first crown beam 14 , the second crown beam 15 , the third crown beam 16 and the tension beam 17 , and embed steel plates outside the first crown beam 14 , the second crown beam 15 and the third crown beam 16 .

[0047] ⑤Install the first temporary steel pipe support 25 and the second temporary steel pipe support 26.

[0048] ⑥ Excavate the channel earthwork to the channel bottom elevation, construct the protective surface 23, and construct the first hidden beam 18, the second hidden beam 19, the third hidden beam 20 and the first hidden support 21 and the second hidden support 22 in sequence.

[0049] ⑦ Symmetrically dismantle the first temporary steel pipe support 25 and the second temporary steel pipe support 26.

[0050] ⑧Construction of channel bottom lining 24, construction completed.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure for protecting the existing bridge pier in the middle of a channel, characterized by: The invention comprises a bridge pile (01) to be protected, an upper bridge pier (02) and a bridge (03), wherein first supporting piles (11) and second supporting piles (12) are arranged in a row on both sides of a channel, a circle of third supporting piles (13) is arranged on the outer contour of the bridge pile (01), a first crown beam (14), a second crown beam (15) and a third crown beam (16) are arranged on the top of the first supporting pile (11), the second supporting pile (12) and the third supporting pile (13), respectively, and the third crown beam (16) forms a A tension beam (17) is arranged in the middle area, and a first hidden beam (18), a second hidden beam (19) and a third hidden beam (20) are respectively arranged at the positions of the first supporting pile (11), the second supporting pile (12) and the third supporting pile (13) on both sides of the channel bottom; the first hidden beam (18) and the third hidden beam (20) are connected by a first hidden support (21) arranged at intervals, and the second hidden beam (19) and the third hidden beam (20) are connected by a second hidden support (22) arranged at intervals.

2. The structure for protecting the existing bridge pier in the middle of a channel according to claim 1 is characterized by: The third crown beam (16) and the third concealed beam (20) are arranged in a closed annular shape on a horizontal plane.

3. The structure for protecting the existing bridge pier in the middle of a channel according to claim 2 is characterized by: The annular whole formed by the third crown beam (16) and the third concealed beam (20) on the horizontal plane is respectively arranged in an arc shape at the water-facing end and the water-receiving end.

4. The structure for protecting the existing bridge pier in the middle of a channel according to claim 1 is characterized by: The first crown beam (14), the second crown beam (15) and the third crown beam (16) are respectively the same in size as the first hidden beam (18), the second hidden beam (19) and the third hidden beam (20), and the tension beam (17) is respectively the same in size as the first hidden support (21) and the second hidden support (22).

5. The structure for protecting the existing bridge pier in the middle of a channel according to claim 4 is characterized by: The tension beams (17) are arranged alternately with the first concealed supports (21) and the second concealed supports (22) on a plane.

6. The structure for protecting the existing bridge pier in the middle of a channel according to claim 5 is characterized by: The first crown beam (14), the second crown beam (15), the third crown beam (16), the first hidden beam (18), the second hidden beam (19), the third hidden beam (20), the tension beam (17), the first hidden support (21) and the second hidden support (22) are all reinforced concrete structures.

7. The structure for protecting the existing bridge pier in the middle of a channel according to claim 1 is characterized by: The inner side wall of the channel is provided with a protective surface (23), and the bottom of the channel is provided with a channel bottom lining (24).

8. The structure for protecting the existing bridge pier in the middle of a channel according to claim 1 is characterized by: A first temporary steel pipe support (25) is provided between the first crown beam (14) and the third crown beam (16), and a second temporary steel pipe support (26) is provided between the second crown beam (15) and the third crown beam (16).

9. The structure for protecting the existing bridge pier in the middle of a channel according to claim 8 is characterized by: The two ends of the first temporary steel pipe support (25) are respectively welded to the first crown beam (14) and the third crown beam (16), and the two ends of the second temporary steel pipe support (26) are respectively welded to the two ends of the second crown beam (15) and the third crown beam (16).

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