Three-way linear construction device suitable for incremental launching construction of steel box girder

Abstract

The utility model belongs to the technical field of steel box girder construction, and particularly relates to a three-way linear construction device suitable for steel box girder incremental launching construction, which comprises a steel box girder, a guide beam, an incremental launching control device, a deflection control device and a transverse displacement control device, according to the steel box girder pushing device, the problems that in the steel box girder pushing process, friction between the steel box girder and the pushing device is small, and relative sliding is likely to be generated are solved, and the construction efficiency is improved; the problems that a steel box girder pushing device is large in internal sliding friction force, low in construction efficiency and high in loss are solved, the construction loss is reduced, and the construction efficiency is improved. The problem of deflection generated by the cantilever effect in the pushing process of the steel box girder is solved, and the construction efficiency and quality are improved; the problem of transverse dislocation at the joint of two spans of the bridge pier in a steel box girder pushing project is solved, and the construction efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel box girder construction, and particularly relates to a three-way linear construction device suitable for incremental launching construction of steel box girders. Background Technique

[0002] With the continuous development of the domestic bridge engineering construction field, the demand for long-span bridge construction is increasing day by day. As a widely used bridge beam structure, the incremental launching construction of steel box girders is more and more applied, which greatly improves the construction efficiency, thus shortening the construction period and saving costs.

[0003] During the incremental launching construction process, the deflection and axis of the steel box girder are constantly changing, and lateral displacement is likely to occur, which is more serious in long-span incremental launching construction. The traditional lateral control has a large incremental launching load and a small moving distance, with extremely low construction efficiency, making it difficult to ensure the structural safety, delaying the construction period and increasing costs.

[0004] Therefore, a three-way linear construction device suitable for incremental launching construction of steel box girders is proposed to solve the above problems.

[0005] The utility model can perform three-way linear control of the incremental launching of steel box girders for different spans and different environments, which is of great significance to project quality, bridge safety and construction costs. Content of the Utility Model

[0006] The purpose of the utility model is to provide a three-way linear construction device suitable for incremental launching construction of steel box girders to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A three-way linear construction device suitable for incremental launching construction of steel box girders, including a steel box girder, a guide girder, an incremental launching control device, a deflection control device, and a lateral displacement control device. The steel box girder is fixedly connected to the guide girder by bolts, and steel box girder guide girders are provided on both sides of the bottom of the steel box girder and the guide girder.

[0008] The incremental launching control device is connected to the ground by bolts, and includes: a guide girder limit groove, an incremental launching baffle, incremental launching rollers, an incremental launching limit groove, a control island, a longitudinal displacement jack, a vertical displacement jack, and incremental launching bolts. The incremental launching baffle is fixedly connected to the left side wall of the incremental launching limit groove. A longitudinal displacement jack is provided on the side wall of the incremental launching baffle and is connected to the control island at the other end. A vertical displacement jack is provided on the control island, and the other end of the vertical displacement jack is fixedly connected to the guide girder limit groove by an incremental launching bolt. The control island is arranged in the incremental launching limit groove, and incremental launching rollers are arranged at the bottom of the incremental launching limit groove.

[0009] The deflection control device is fixedly connected to the ground by bolts and includes: a deflection control T-beam, deflection control bolts, a deflection control jack, and a deflection control bottom plate. The deflection control bottom plate is provided with a deflection control jack. The deflection control T-beam is located above the deflection control jack and is connected to the deflection control jack through the deflection control bolts.

[0010] The lateral displacement control device is fixedly connected to the ground by bolts and includes: lateral displacement control side plates, lateral displacement control jacks, lateral displacement control clamping plates, and a lateral displacement control bottom plate. The lateral displacement control side plates are provided on both sides of the lateral displacement control bottom plate. The inner walls of both ends of the lateral displacement control bottom plate are provided with lateral displacement control jacks, and the other ends of the lateral displacement control jacks are provided with lateral displacement control clamping plates.

[0011] Preferably, circular holes are evenly arranged on the side wall of the steel box girder guide beam, and the steel box girder guide beam and the guide beam limiting groove are fixedly connected by bolts.

[0012] Preferably, the steel box girder guide beam is welded to the steel box girder.

[0013] Preferably, the lower side wall of the control island is slidably connected to the upper surface of the jacking roller.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] (1) This application solves the problem that during the jacking of the steel box girder, the friction between the steel box girder and the jacking device is small and relative sliding is likely to occur, improving the construction efficiency.

[0016] (2) This application solves the problems of large internal sliding friction force of the steel box girder jacking device, low construction efficiency, and high loss, reducing construction loss and improving construction efficiency.

[0017] (3) This application solves the deflection problem caused by the cantilever effect during the jacking of the steel box girder, improving the construction efficiency and quality.

[0018] (4) This application solves the problem of lateral misalignment at the connection of two spans of the bridge pier during the steel box girder jacking project, improving the construction efficiency and quality. Description of the Drawings

[0019] Figure 1 is the overall schematic diagram of the present utility model;

[0020] Figure 2 is the front view of longitudinal and vertical control;

[0021] Figure 3 is the front view of deflection and lateral control;

[0022] Figure 4It is a detailed view of the incremental launching control device for the steel box girder;

[0023] Figure 5 It is a detailed view of the deflection control device for the incremental launching of the steel box girder;

[0024] Figure 6 It is a detailed view of the lateral displacement control device for the incremental launching of the steel box girder.

[0025] In the figure: 1 steel box girder, 2 pilot girder, 3 incremental launching control device, 4 deflection control device, 5 lateral displacement control device, 6 steel box girder pilot girder, 7 pilot girder limit groove, 8 incremental launching baffle, 9 incremental launching roller, 10 incremental launching limit groove, 11 control island, 12 longitudinal displacement jack, 13 vertical displacement jack, 14 incremental launching bolt, 15 deflection control T-beam, 16 deflection control bolt, 17 deflection control jack, 18 deflection control bottom plate, 19 lateral displacement control side plate, 20 lateral displacement control jack, 21 lateral displacement control splint, 22 lateral displacement control bottom plate. Specific implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0028] Embodiment:

[0029] Please refer to Figure 1-6 , the present invention provides a technical solution:

[0030] A three-way linear construction device applicable to the incremental launching construction of steel box girders, comprising a steel box girder 1, a guide girder 2, a jacking control device 3, a deflection control device 4, and a lateral displacement control device 5. The steel box girder 1 is fixedly connected to the guide girder 2 by bolts. The guide girder 2 can be divided into multiple segments, which are connected by high-strength bolts. An inclined transverse plate is provided at the lower part of the foremost guide girder 2. Steel box girder guides 6 are provided on both sides of the bottoms of the steel box girder 1 and the guide girder 2. The jacking control device 3, the deflection control device 4, and the lateral displacement control device 5 can adjust the jacks according to the actual construction requirements, and can also adjust the height of the devices according to the actual construction, such as adding gaskets at the lower part, etc.

[0031] The jacking control device 3 is connected to the ground by bolts and includes: a guide girder limiting groove 7, a jacking baffle 8, a jacking roller 9, a jacking limiting groove 10, a control island 11, a longitudinal displacement jack 12, a vertical displacement jack 13, and jacking bolts 14. The jacking baffle 8 is fixedly connected to the left side wall of the jacking limiting groove 10. A longitudinal displacement jack 12 is provided on the side wall of the jacking baffle 8 and is connected to the control island 11 at the other end. A vertical displacement jack 13 is provided on the control island 11, and the other end of the vertical displacement jack 13 is fixedly connected to the guide girder limiting groove 7 through the jacking bolts 14. The control island 11 is arranged in the jacking limiting groove 10, and a jacking roller 9 is provided at the bottom of the jacking limiting groove 10.

[0032] The deflection control device 4 is fixedly connected to the ground by bolts and includes: a deflection control T-beam 15, deflection control bolts 16, deflection control jacks 17, and a deflection control bottom plate 18. Deflection control jacks 17 are provided on the deflection control bottom plate 18. The deflection control T-beam 15 is located above the deflection control jacks 17 and is connected to the deflection control jacks 17 through the deflection control bolts 16, so that the deflection control T-beam 15 can rotate within a certain range in the vertical plane.

[0033] The lateral displacement control device 5 is fixedly connected to the ground by bolts and includes: lateral displacement control side plates 19, lateral displacement control jacks 20, lateral displacement control clamping plates 21, and a lateral displacement control bottom plate 22. Lateral displacement control side plates 19 are provided on both sides of the lateral displacement control bottom plate 22. Lateral displacement control jacks 20 are provided at both ends of the inner wall of the lateral displacement control bottom plate 22. In order to reduce the possible damage to the steel box girder guide 6 caused by the pressure, lateral displacement control clamping plates 21 are provided at the other ends of the lateral displacement control jacks 20.

[0034] Circular holes are evenly arranged on the side wall of the steel box girder guide 6. The steel box girder guide 6 is fixedly connected to the guide girder limiting groove 7 by bolts. During the jacking process, the prototype holes between the steel box girder 1 and the jacking control device 3 need to ensure overlap, and after inserting the limiting bolts, the jacking is carried out.

[0035] The steel box girder guide 6 is welded to the steel box girder 1.

[0036] The lower side wall of the control island 11 is slidably connected to the upper surface of the push roller 9 .

[0037] The outer deflection control jack 17 on the deflection control device 4 near the guide beam 2 remains unchanged, and the inner deflection control jack 17 away from the guide beam 2 is loaded, pushing the deflection control T beam 15 to rotate around the deflection control bolt 16 in the vertical plane, the lower inclined cross plate at the front end of the guide beam 2 contacts the deflection control T beam 15, the outer deflection control jack 17 is appropriately loaded, and the inner deflection control jack 17 is appropriately unloaded, so that the guide beam 2 is controlled at the standard height;

[0038] The lateral displacement control jacks 20 on both sides of the lateral displacement control device 5 are loaded so that the lateral displacement control clamps 21 clamp the steel box girder guide beam 6. Then, according to the lateral displacement to be adjusted, the lateral displacement control jacks 20 on both sides are loaded and unloaded to achieve the purpose of lateral displacement adjustment.

[0039] Working principle:

[0040] The construction operation process is as follows:

[0041] Vertical displacement jacking process: steel box girder guide beams 6 are arranged on both sides of the bottom of the steel box girder 1. The steel box girder guide beams 6 are connected and fixed to the guide beam limit grooves 7 by bolts to prevent the problem of relative sliding caused by small friction between the steel box girder 1 and the jacking control device 3 during the jacking process of the steel box girder 1. Then, the vertical displacement jack 13 arranged on the control island 11 pushes the steel box girder 1 upward to make it leave the ground. In order to prevent uneven force due to deformation during the vertical jacking process, jacking bolts 14 are arranged at the bottom of the guide beam limit grooves 7, so that the guide beam limit grooves 7 can rotate within a certain range in the vertical plane, so that the steel box girder guide beams 6 and the guide beam limit grooves 7 are tightly connected and evenly stressed.

[0042] Longitudinal displacement pushing process: the longitudinal displacement jack 12 arranged on the pushing baffle 8 pushes the control island 11 longitudinally. To control the lateral displacement, the control island 11 is arranged in the pushing limit groove 10. To reduce friction, a pushing roller 9 is arranged therebetween to change sliding into rolling to reduce friction.

[0043] When a single longitudinal displacement reaches the limit, the vertical displacement jack 13 is unloaded, the bolts between the steel box girder guide beam 6 and the guide beam limit groove 7 are released, the longitudinal displacement jack 12 is unloaded, and the control island 11 is retracted to perform the vertical displacement jacking process. Multiple groups of jacking control devices 3 perform this process alternately to ensure that the steel box girder 1 is always at the vertical control height. When all the control islands 11 are reset, the longitudinal displacement jacking process is then performed again. This process is alternately cycled to achieve the longitudinal jacking process of the steel box girder without changing the vertical control height.

[0044] Deflection control process: When the longitudinal displacement is in progress and the lower inclined transverse plate at the front end of the guide beam 2 approaches the next pier, the deflection control jack 17 on the deflection control device 4 close to the guide beam 2 side (outer side) remains unchanged, and the deflection control jack 17 away from the guide beam 2 side (inner side) is loaded, pushing the deflection control T beam 15 to rotate around the deflection control bolt 16 in the vertical plane, so that the deflection control T beam 15 is ready to receive the guide beam 2, and then the longitudinal jacking is continued until the lower inclined transverse plate at the front end of the guide beam 2 contacts the deflection control T beam 15, and the longitudinal jacking is stopped. Then the outer deflection control jack 17 is appropriately loaded, and the inner deflection control jack 17 is appropriately unloaded, so that the guide beam 2 is controlled at the standard height, eliminating the deflection caused by the cantilever effect during the front jacking process;

[0045] Transverse displacement control process: as the longitudinal jacking continues to advance, the steel box girder guide beam 6 enters the transverse displacement control clamping plate 21 in the middle of the transverse displacement control device 5, and then the transverse displacement control jacks 20 on both sides of the transverse displacement control device 5 are loaded, so that the transverse displacement control clamping plate 21 clamps the steel box girder guide beam 6, and then the transverse displacement control jacks 20 on both sides are loaded and unloaded according to the transverse displacement to be adjusted, so as to achieve the purpose of transverse displacement adjustment;

[0046] This construction control system realizes three-way linear control of steel box girder jacking construction through four processes: vertical displacement jacking, longitudinal displacement jacking, deflection control, and lateral displacement control. It improves construction efficiency, reduces energy and material loss, and greatly improves construction accuracy and safety.

[0047] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-way linear construction device applicable to the incremental launching construction of a steel box girder, comprising a steel box girder (1), a guide girder (2), a jacking control device (3), a deflection control device (4), and a lateral displacement control device (5), characterized in that, The steel box girder (1) is fixedly connected to the guide girder (2) by bolts. On both sides of the bottom of the steel box girder (1) and the guide girder (2), there are steel box girder guide girders (6). The jacking control device (3) is connected to the ground by bolts and includes: a guide girder limit groove (7), a jacking baffle (8), a jacking roller (9), a jacking limit groove (10), a control island (11), a longitudinal displacement jack (12), a vertical displacement jack (13), and jacking bolts (14). The jacking baffle (8) is fixedly connected to the left side wall of the jacking limit groove (10). The side wall of the jacking baffle (8) is provided with a longitudinal displacement jack (12), and the other end is connected to the control island (11). The control island (11) is provided with a vertical displacement jack (13). The other end of the vertical displacement jack (13) is fixedly connected to the guide girder limit groove (7) by jacking bolts (14). The control island (11) is arranged in the jacking limit groove (10), and the bottom of the jacking limit groove (10) is provided with a jacking roller (9). The deflection control device (4) is fixedly connected to the ground by bolts and includes: a deflection control T-beam (15), deflection control bolts (16), deflection control jacks (17), and a deflection control bottom plate (18). The deflection control bottom plate (18) is provided with deflection control jacks (17). The deflection control T-beam (15) is located above the deflection control jacks (17) and is connected to the deflection control jacks (17) by deflection control bolts (16). The lateral displacement control device (5) is fixedly connected to the ground by bolts and includes: lateral displacement control side plates (19), lateral displacement control jacks (20), lateral displacement control clamping plates (21), and a lateral displacement control bottom plate (22). The lateral displacement control side plates (19) are provided on both sides of the lateral displacement control bottom plate (22). At both ends of the inner wall of the lateral displacement control bottom plate (22), there are lateral displacement control jacks (20). The other ends of the lateral displacement control jacks (20) are provided with lateral displacement control clamping plates (21).

2. The three-way linear construction device applicable to the incremental launching construction of steel box girders according to claim 1, wherein: The side wall of the steel box girder guide girder (6) is provided with uniformly arranged circular holes. The steel box girder guide girder (6) is fixedly connected to the guide girder limit groove (7) by bolts.

3. The three-way linear construction device applicable to the incremental launching construction of steel box girders according to claim 1, wherein: The steel box girder guide girder (6) is welded to the steel box girder (1).

4. The three-way linear construction device applicable to the incremental launching construction of steel box girders according to claim 1, characterized in that: The lower side wall of the control island (11) is slidably connected to the upper surface of the jacking roller (9).

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