A rapid replacement structure and construction method for an existing beam bridge

Abstract

The present invention relates to a rapid replacement structure for an existing beam bridge, comprising a group of pier mechanisms, a group of temporary support mechanisms and a prepared bridge; the pier mechanism comprises a plurality of second support columns plugged into the ground and a base cast on the ground, the second support columns are located in the base and are higher than the base, the surface of the base is provided with a prefabricated pedestal, and the second support columns are all plugged into the pedestal; the temporary support mechanism comprises a plurality of first support columns plugged into the ground, steel plates are placed between the bottoms of the first support columns, support plates are fixedly connected to the surfaces of the steel plates, the support plates are flush with the bottom surfaces of the pedestals, a plurality of moving mechanisms for driving the movement of the prepared bridge are provided on the surfaces of the support plates, and the moving mechanisms are arranged at the bottom of the prepared bridge; the problem in the prior art that the traditional bridge replacement method is to break up the old bridge and then build a new bridge on site, which is low in efficiency and affects people's passage, is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge engineering, and in particular relates to a rapid replacement structure of an existing beam bridge and a construction method. Background Art

[0002] A bridge generally refers to a structure spanning rivers, lakes, or seas to facilitate the passage of vehicles and pedestrians. To adapt to the rapid development of modern transportation, the term "bridge" has also been extended to encompass structures designed to facilitate travel across mountain streams, over unfavorable geology, or to meet other transportation needs. As the name suggests, an existing bridge in service is one that is currently in use.

[0003] After a certain number of years of use, an existing bridge needs to be replaced. The traditional replacement method is to break up the old bridge and then build a new one on site, which is inefficient and affects people's passage. To address the above problems, this invention document proposes a structure and construction method for quickly replacing an existing beam bridge. Summary of the Invention

[0004] In view of this, the present invention provides a rapid replacement structure and construction method for existing beam bridges in order to solve the problem that the traditional bridge replacement method in the prior art is to break up the old bridge and then build a new bridge on site, which is inefficient and affects people's passage.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A rapid replacement structure for an existing beam bridge, comprising:

[0007] a set of pier mechanisms, a set of temporary support mechanisms and a reserve bridge;

[0008] The pier structure includes a plurality of second support columns plugged into the ground and a base cast into the ground. The second support columns are located inside and higher than the base. A prefabricated pedestal is provided on the surface of the base. The second support columns are all plugged into the pedestal.

[0009] The temporary support mechanism includes multiple first support columns inserted into the ground, steel plates are placed between the bottoms of the first support columns, support plates are fixedly connected to the surface of the steel plates, the support plates are flush with the bottom surface of the pedestal, and multiple moving mechanisms for driving the movement of the preparatory bridge are provided on the surface of the support plates, and the moving mechanisms are provided at the bottom of the preparatory bridge.

[0010] Furthermore, the moving mechanism includes a transverse moving seat and multiple embedded bolts. The transverse moving seat is arranged on the surface of the support plate. The surface of the transverse moving seat is provided with a longitudinal moving seat. A slide is slidably connected in the longitudinal moving seat. A group of first hydraulic cylinders is fixedly connected to the surface of the slide. One end of the hydraulic rod of the first hydraulic cylinder is fixedly connected to the same connecting plate. The embedded bolts are embedded in the bottom of the prepared bridge. The embedded bolts all pass through the connecting plate and are threaded with nuts.

[0011] Furthermore, the bottom of the longitudinal moving seat is fixedly connected to a plurality of mounting columns, the bottoms of the mounting columns are rotatably connected to ball bearings, the ball bearings are in contact with the transverse moving seat, a transverse hydraulic cylinder is fixedly connected between the bottom of the longitudinal moving seat and one side inner wall of the transverse moving seat, a group of positioning plates are fixedly connected to the surface of the longitudinal moving seat, one side of the positioning plates is fixedly connected to the longitudinal hydraulic cylinder, the surface of the slide plate is fixedly connected to a push plate, and the push plate is fixed to one end of the hydraulic rod of the longitudinal hydraulic cylinder.

[0012] Furthermore, a plurality of guide sleeves are fixedly connected to the bottom of the steel plate, and the plurality of guide sleeves are respectively sleeved with the plurality of first support columns.

[0013] Furthermore, a plurality of casting holes respectively connected to the second support columns are opened on the surface of the base, and baffles are fixedly connected to both sides of the second support columns.

[0014] Furthermore, a plurality of guide columns are prefabricated on the surface of the base, and a plurality of sockets for use with the guide columns are integrally formed on the bottom of the support platform.

[0015] Furthermore, sleepers are placed on the surface of the steel plates, and the prepared bridge is temporarily set between two sleepers.

[0016] The present invention also provides a construction method for quickly replacing the structure of an existing beam bridge, comprising the following steps:

[0017] S1: Build a temporary support structure. During construction, first drive the first support column into the ground, then lay the steel plate on the surface of the first support column, and then fit the guide sleeves on the first support column. Then, place sleepers on the surface of the steel plate, and place the prepared bridge on two sleepers for standby.

[0018] S2: The old bridge is dismantled, and the second support column is driven into the ground. The base is then cast and the guide column is fixed to the base. After the base hardens, the prefabricated cap is placed on the second support column. The guide column and the second support column are inserted into the bottom of the cap. Concrete is then poured into the cap through the casting hole to fix the cap and the second support column.

[0019] S3: Place the mobile mechanism under the prepared bridge, and then use the pre-buried embedded bolts to install and fix the mobile mechanism, start the first hydraulic cylinder to lift the prepared bridge, and then retract the sleepers. Then retract two of the first hydraulic cylinders so that their bottoms are suspended in the air, and then start the longitudinal hydraulic cylinder to push the longitudinal moving seat to one side. After it is in place, start the two first hydraulic cylinders so that their bottoms contact the support plate, and then the remaining first hydraulic cylinders are retracted and suspended in the air. The grounded longitudinal hydraulic cylinder is started to make the slide slide in the longitudinal moving seat, thereby driving the prepared bridge to move. Repeat this process to move the prepared bridge to the platform.

[0020] S4: When the lateral position of the preparation bridge needs to be adjusted, similarly, the first hydraulic cylinder and the transverse hydraulic cylinder are used to reciprocately extend and retract to drive the preparation bridge to move laterally, and finally the preparation bridge is placed on the platform to complete the replacement, and finally the moving mechanism is dismantled and retracted.

[0021] The beneficial effects of the present invention are:

[0022] 1. The existing beam bridge rapid replacement structure disclosed in the present invention, through the provision of a temporary support mechanism and a spare bridge, enables the spare bridge to be quickly moved to the pier mechanism by means of a moving mechanism when the in-service bridge needs to be replaced. Only the base needs to be cast on site, and the construction of other workstations can be completed within the time it takes for the base to harden, thereby improving the efficiency of replacing the in-service bridge.

[0023] 2. The existing beam bridge quick replacement structure disclosed in the present invention installs the pedestal on the second support column, so that the pedestal is plugged into the second support column, and then concrete is filled between the pedestal and the second support column, thereby reinforcing the pedestal and improving the stability of the pedestal installation.

[0024] 3. The existing beam bridge rapid replacement structure disclosed in the present invention, through the setting of the moving mechanism, multiple moving mechanisms are started alternately, thereby moving the prepared bridge laterally, and at the same time, the prepared bridge can be adjusted longitudinally. It is flexible to use, reduces the use of large equipment, and saves construction costs.

[0025] 4. The existing beam bridge rapid replacement structure disclosed in the present invention can quickly move the prepared bridge to the pier mechanism by using a moving mechanism. Only the base needs to be cast on site. During the time when the base hardens, the construction of other workstations can be completed, thereby improving the efficiency of replacing the bridge in service. At the same time, the pedestal is connected with the second support column, and then concrete is filled between the pedestal and the second support column to reinforce the pedestal, thereby improving the stability of the pedestal installation. The prepared bridge can also be adjusted horizontally and vertically, which is flexible to use, reduces the use of large equipment, and saves construction costs.

[0026] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0028] Figure 1 This is a three-dimensional structural diagram of a quick replacement structure for an existing beam bridge according to the present invention;

[0029] Figure 2 This is a structural schematic diagram of a pier mechanism and a temporary support mechanism in a rapid replacement structure for an existing beam bridge according to the present invention;

[0030] Figure 3 This is a partial structural diagram of a quick replacement structure for an existing beam bridge according to the present invention;

[0031] Figure 4 This is a cross-sectional view of a pier mechanism in a rapid replacement structure for an existing beam bridge according to the present invention;

[0032] Figure 5 This is a cross-sectional view of a temporary support mechanism in a rapid replacement structure of an existing beam bridge according to the present invention;

[0033] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of point A.

[0034] Figure numerals: 1. Pier mechanism; 2. Temporary support mechanism; 3. Preparatory bridge; 4. Moving mechanism; 5. First support column; 6. Steel plate; 7. Guide sleeve; 8. Support plate; 9. Second support column; 10. Base; 11. Cap; 12. Casting hole; 13. Baffle; 14. Guide column; 15. Transverse moving seat; 16. Longitudinal moving seat; 17. Slide plate; 18. First hydraulic cylinder; 19. Connecting plate; 20. Embedded bolt; 21. Positioning plate; 22. Push plate; 23. Longitudinal hydraulic cylinder; 24. Transverse hydraulic cylinder; 25. Sleeper; 26. Mounting column; 27. Ball bearing. DETAILED DESCRIPTION

[0035] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0036] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0037] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] Reference Figures 1-6 A structure for quickly replacing an existing beam bridge includes a set of pier mechanisms 1, a set of temporary support mechanisms 2 and a spare bridge 3. The spare bridge 3 is prefabricated and can be directly transported to the site after being prefabricated in the factory.

[0039] The pier mechanism 1 includes a plurality of second support columns 9 plugged into the ground and a base 10 cast on the ground. The second support columns 9 are located inside the base 10 and are higher than the base 10. A prefabricated pedestal 11 is provided on the surface of the base 10. The second support columns 9 are all plugged into the pedestal 11, and the second support columns 9 are used to fix the pedestal 11.

[0040] The temporary support mechanism 2 includes a plurality of first support columns 5 plugged into the ground, and steel plates 6 are placed between the bottoms of the first support columns 5. The surface of the steel plate 6 is fixedly connected to a support plate 8, and the support plate 8 is flush with the bottom surface of the pedestal 11. The surface of the support plate 8 is provided with a plurality of moving mechanisms 4 for driving the movement of the preparation bridge 3. The moving mechanism 4 is provided at the bottom of the preparation bridge 3. When the in-service bridge needs to be replaced, the mobile mechanism 4 can be used to quickly move the preparation bridge 3 to the pier mechanism 1. Only the base 10 needs to be cast on site. During the time when the base 10 hardens, the construction of other workstations can be completed, thereby improving the efficiency of replacing the in-service bridge.

[0041] Reference Figure 5 The moving mechanism 4 includes a transverse moving seat 15 and a plurality of embedded bolts 20. The transverse moving seat 15 is arranged on the surface of the support plate 8. The surface of the transverse moving seat 15 is provided with a longitudinal moving seat 16. A slide 17 is slidably connected in the longitudinal moving seat 16. A group of first hydraulic cylinders 18 are fixedly connected to the surface of the slide 17. One end of the hydraulic rod of the first hydraulic cylinder 18 is fixedly connected to the same connecting plate 19. The embedded bolts 20 are embedded in the bottom of the prepared bridge 3. The embedded bolts 20 all pass through the connecting plate 19 and are threadedly connected with nuts. Multiple moving mechanisms 4 are started alternately to move the prepared bridge 3 laterally. It is flexible to use, reduces the use of large equipment, and saves construction costs.

[0042] Reference Figure 5 and Figure 6 The bottom of the longitudinal moving seat 16 is fixedly connected with multiple mounting columns 26, and the bottoms of the mounting columns 26 are rotatably connected with balls 27, which are in contact with the transverse moving seat 15. A transverse hydraulic cylinder 24 is fixedly connected between the bottom of the longitudinal moving seat 16 and the inner wall of one side of the transverse moving seat 15. A group of positioning plates 21 are fixedly connected to the surface of the longitudinal moving seat 16, and one side of the positioning plate 21 is fixedly connected to the longitudinal hydraulic cylinder 23. The surface of the slide 17 is fixedly connected with a push plate 22, and the push plate 22 is fixed to one end of the hydraulic rod of the longitudinal hydraulic cylinder 23. The first hydraulic cylinder 18 and the transverse hydraulic cylinder 24 are used to reciprocately extend and retract to drive the preparatory bridge 3 to move laterally.

[0043] Reference Figure 3 The bottom of the steel plate 6 is fixedly connected with a plurality of guide sleeves 7, and the plurality of guide sleeves 7 are respectively sleeved with the plurality of first support columns 5, so that the stability of the installation of the steel plate 6 is increased by the guide sleeves 7.

[0044] Reference Figure 4 A plurality of casting holes 12 are provided on the surface of the pedestal 11, which are respectively connected to the second support column 9. Baffles 13 are fixedly connected on both sides of the second support column 9. Concrete is poured in the casting holes 12 to increase the stability of the connection between the pedestal 11 and the second support column 9.

[0045] Reference Figure 4 The surface of the base 10 is prefabricated with multiple guide columns 14, and the bottom of the support platform 11 is integrally formed with multiple sockets for use with the guide columns 14. The guide columns 14 can guide the support platform 11 and improve the installation accuracy of the support platform 11.

[0046] Reference Figure 1 Sleepers 25 are placed on the surface of the steel plates 6, and the preliminary bridge 3 is temporarily set between two sleepers 25, and the sleepers 25 temporarily support the preliminary bridge 3.

[0047] The present invention also provides a construction method for quickly replacing the structure of an existing beam bridge, comprising the following steps:

[0048] S1: Build the temporary support structure 2. During construction, first drive the first support column 5 into the ground, then lay the steel plate 6 on the surface of the first support column 5, and respectively fit the guide sleeves 7 on the first support column 5. Then, place the sleepers 25 on the surface of the steel plate 6, and place the prepared bridge 3 on the two sleepers 25 for standby use.

[0049] S2: The old bridge is dismantled, and the second support column 9 is driven into the ground. The base 10 is then cast, and the guide column 14 is fixed on the base 10. After the base 10 hardens, the prefabricated pedestal 11 is placed on the second support column 9. The guide column 14 and the second support column 9 are inserted into the bottom of the pedestal 11. Then, concrete is poured into the pedestal 11 through the casting hole 12 to fix the pedestal 11 and the second support column 9.

[0050] S3: Place the mobile mechanism 4 under the pre-built bridge 3, and then use the pre-buried embedded bolts 20 to install and fix the mobile mechanism 4, start the first hydraulic cylinder 18 to lift the pre-built bridge 3, and then retract the sleepers 25, and then retract two groups of first hydraulic cylinders 18 so that their bottoms are suspended in the air, and then start the longitudinal hydraulic cylinder 23 to push the longitudinal moving seat 16 to one side. After it is in place, the two first hydraulic cylinders 18 are started so that their bottoms contact the support plate 8, and then the remaining first hydraulic cylinders 18 are retracted and suspended in the air, and the grounded longitudinal hydraulic cylinder 23 is started, so that the slide plate 17 slides in the longitudinal moving seat 16, thereby driving the pre-built bridge 3 to move, and repeat this process to move the pre-built bridge 3 to the platform 11;

[0051] S4: When the lateral position of the preparatory bridge 3 needs to be adjusted, similarly, the first hydraulic cylinder 18 and the transverse hydraulic cylinder 24 are used to reciprocately extend and retract to drive the preparatory bridge 3 to move laterally, and finally the preparatory bridge 3 is dropped on the platform 11 to complete the replacement, and finally the moving mechanism 4 is dismantled and retracted.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A rapid replacement structure for an existing beam bridge, characterized in that: include: A set of bridge pier mechanisms (1), a set of temporary support mechanisms (2) and a prepared bridge (3); The pier mechanism (1) comprises a plurality of second support columns (9) plugged into the ground and a base (10) cast into the ground, the second support columns (9) being located inside the base (10) and higher than the base (10), a prefabricated support platform (11) being provided on the surface of the base (10), and the second support columns (9) being plugged into the support platform (11); The temporary support mechanism (2) comprises a plurality of first support columns (5) plugged into the ground, a steel plate (6) is placed between the bottoms of the first support columns (5), a support plate (8) is fixedly connected to the surface of the steel plate (6), the support plate (8) is flush with the bottom surface of the support platform (11), and a plurality of moving mechanisms (4) for driving the movement of the preparatory bridge (3) are provided on the surface of the support plate (8), and the moving mechanisms (4) are provided at the bottom of the preparatory bridge (3); The moving mechanism (4) includes a transverse moving seat (15) and a plurality of embedded bolts (20), wherein the transverse moving seat (15) is arranged on the surface of the support plate (8), and a longitudinal moving seat (16) is provided on the surface of the transverse moving seat (15), wherein a slide plate (17) is slidably connected in the longitudinal moving seat (16), and a group of first hydraulic cylinders (18) are fixedly connected to the surface of the slide plate (17), and one end of the hydraulic rod of the first hydraulic cylinder (18) is fixedly connected to the same connecting plate (19), and the embedded bolts (20) are embedded in the bottom of the prepared bridge (3), and the embedded bolts (20) all pass through the connecting plate (19) and are threadedly connected with nuts.

2. The rapid replacement structure for an existing beam bridge according to claim 1, characterized in that: The bottom of the longitudinal movable seat (16) is fixedly connected to a plurality of mounting columns (26), and the bottoms of the mounting columns (26) are rotatably connected to balls (27), and the balls (27) are in contact with the transverse movable seat (15). A transverse hydraulic cylinder (24) is fixedly connected between the bottom of the longitudinal movable seat (16) and an inner wall of one side of the transverse movable seat (15). A group of positioning plates (21) are fixedly connected to the surface of the longitudinal movable seat (16), and one side of the positioning plates (21) is fixedly connected to the longitudinal hydraulic cylinder (23). The surface of the slide plate (17) is fixedly connected to a push plate (22), and the push plate (22) is fixed to one end of the hydraulic rod of the longitudinal hydraulic cylinder (23).

3. The rapid replacement structure for an existing beam bridge according to claim 2, characterized in that: A plurality of guide sleeves (7) are fixedly connected to the bottom of the steel plate (6), and the plurality of guide sleeves (7) are respectively sleeved with the plurality of first support columns (5).

4. The rapid replacement structure for an existing beam bridge according to claim 3, characterized in that: The surface of the support platform (11) is provided with a plurality of casting holes (12) respectively connected to the second support columns (9), and baffles (13) are fixedly connected to both sides of the second support columns (9).

5. The rapid replacement structure for an existing beam bridge according to claim 4, characterized in that: The surface of the base (10) is prefabricated with a plurality of guide columns (14), and the bottom of the support platform (11) is integrally formed with a plurality of sockets for use with the guide columns (14).

6. The rapid replacement structure for an existing beam bridge according to claim 5, characterized in that: Sleepers (25) are placed on the surfaces of the steel plates (6), and the prepared bridge (3) is temporarily set between two sleepers (25).

7. The construction method for rapid replacement of an existing beam bridge structure according to claim 6, characterized in that: The following steps are involved: S1: Build a temporary support mechanism (2). When building, first drive the first support column (5) into the ground, then lay the steel plate (6) on the surface of the first support column (5), and respectively put the guide sleeve (7) on the first support column (5). Then, place the sleepers (25) on the surface of the steel plate (6), and place the prepared bridge (3) on the two sleepers (25) for standby use; S2: The old bridge is dismantled, and the second support column (9) is driven into the ground. The base (10) is then cast, and the guide column (14) is fixed on the base (10). After the base (10) hardens, the prefabricated pedestal (11) is placed on the second support column (9). At the same time, the guide column (14) and the second support column (9) are plugged into the bottom of the pedestal (11). Then, concrete is poured into the pedestal (11) through the casting hole (12) to fix the pedestal (11) and the second support column (9); S3: Place the moving mechanism (4) below the prepared bridge (3), then use the pre-buried pre-buried bolts (20) to install and fix the moving mechanism (4), start the first hydraulic cylinder (18) to lift the prepared bridge (3), then retract the sleepers (25), then retract two groups of the first hydraulic cylinders (18) so that their bottoms are suspended in the air, then start the longitudinal hydraulic cylinder (23) to push the longitudinal moving seat (16) to one side, after it is in place, start the two first hydraulic cylinders (18) so that their bottoms contact the support plate (8), then the remaining first hydraulic cylinders (18) are retracted and suspended in the air, and the grounded longitudinal hydraulic cylinder (23) is started so that the slide plate (17) slides in the longitudinal moving seat (16), thereby driving the prepared bridge (3) to move, and repeat this process to move the prepared bridge (3) to the platform (11); S4: When the lateral position of the preparation bridge (3) needs to be adjusted, similarly, the first hydraulic cylinder (18) and the transverse hydraulic cylinder (24) are used to reciprocately extend and retract to drive the preparation bridge (3) to move horizontally, and finally the preparation bridge (3) is dropped on the support platform (11) to complete the replacement, and finally the moving mechanism (4) is dismantled and retracted.

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