Bridge support-free jacking, dragging and translating device

Abstract

The utility model discloses a bridge support-free jacking, dragging and translating device which comprises two sets of existing cover beams and two sets of newly-built cover beams, the two sets of newly-built cover beams are located on one sides of the two sets of existing cover beams respectively, T-beam plates are arranged on the tops of the two sets of existing cover beams, tetrafluoro sliding plates are arranged on the tops of the existing cover beams, and the two sets of newly-built cover beams are connected with the T-beam plates. The teflon sliding plate is further provided with a plurality of sets of jacking jacks, the top of the teflon sliding plate is provided with a distribution beam base, the top of the distribution beam base is provided with a track distribution beam, the top of the track distribution beam is provided with a transverse partition plate, and the newly-built cover beam is provided with a traction jack. A temporary support does not need to be erected, rapid jacking translation of an upper structure assembly type beam plate is achieved, secondary translation is achieved after a lower structure pile foundation and a bridge pier cover beam are dismantled, newly built and replaced, and the technical problem that replacement construction of a lower structure is achieved under the condition that the beam plate does not need to be cut and dismantled is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of infrastructure construction, in particular to a bridge bracketless jacking, towing and translation device. Background Technique

[0002] The perfection degree of transportation infrastructure is related to the development space of the national economy. In recent years, with the increase of investment in infrastructure construction in China, the mileage of expressways has been increasing continuously. However, after the highways are built, the traffic load has increased sharply. As the operation time goes by, the early-built expressways in China cannot meet the growing traffic volume demand. The traffic volume of many expressways exceeds their designed traffic capacity, and the service level has been declining continuously, directly leading to expressway traffic congestion. Moreover, the roadbeds and pavements of many early-built expressways are severely damaged, affecting driving comfort and posing potential safety hazards, resulting in traffic accidents. Therefore, a large number of expressways need to be upgraded, reconstructed or expanded. At present, the reconstruction and expansion of expressways has become a hot topic in China's highway engineering construction.

[0003] In the widening reconstruction of expressway bridges, in order to make the best use of the superstructure as much as possible, some upper precast beam slabs need to be jacked and translated to the position of the newly built capping beam. After the lower structure of the old bridge is demolished and replaced with a new one, it is then translated back to the original bridge position. Due to the complex boundary conditions at the expressway reconstruction and expansion site and the great difficulty in construction organization, we need to propose a bridge bracketless jacking, towing and translation device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a bridge bracketless jacking, towing and translation device, which solves the technical problem of replacing the lower structure of the beam slab without cutting and demolishing, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A bridge bracketless jacking, towing and translation device includes two groups of existing capping beams and two groups of newly built capping beams. The two groups of newly built capping beams are respectively located on one side of the two groups of existing capping beams. T-shaped beam slabs are arranged on the tops of the two groups of existing capping beams. Tetrafluoroethylene sliders are arranged on the tops of the existing capping beams. A number of groups of jacking jacks are also arranged on the tetrafluoroethylene sliders. A distribution beam base is arranged on the top of the tetrafluoroethylene slider. A track distribution beam is arranged on the top of the distribution beam base. A diaphragm plate is installed on the top of the track distribution beam. A towing jack is installed on the newly built capping beam. The output end of the towing jack is connected with a high-strength threaded steel. One end of the high-strength threaded steel is connected with a high-strength threaded steel connecting nut.

[0007] Preferably, four groups of M chemical bolts are fixedly installed at the top of the distribution beam base, and the tops of the four groups of M chemical bolts are all connected to the diaphragm plate.

[0008] Preferably, the four groups of M chemical bolts are arranged at equal intervals, and the four groups of M chemical bolts are arranged in a single row on the center line of the distribution beam base.

[0009] Preferably, the distribution beam base and the track distribution beam are integrally formed, and the track distribution beam is in an H shape.

[0010] Preferably, one end of the high-strength steel bar penetrates through the track distribution beam and is connected to the high-strength steel bar connecting nut, and the high-strength steel bar connecting nut is installed on one side of the T-shaped beam slab.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] When the present utility model is used, there is no need to erect a temporary support, and rapid jacking and translation of the prefabricated beam slab of the upper structure can be realized. After the replacement of the pile foundation and the pier capping beam of the lower structure through demolition and new construction, secondary translation is carried out, solving the technical problem of replacement construction of the lower structure without cutting and demolishing the beam slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model before translation;

[0014] Figure 2 is a schematic structural diagram of the present utility model during translation;

[0015] Figure 3 is a schematic structural diagram of the distribution beam base and M24 chemical bolts of the present utility model.

[0016] In the figure: 1, existing capping beam; 2, new capping beam; 3, T-shaped beam slab; 4, tetrafluoroethylene slide plate; 5, jacking jack; 6, distribution beam base; 7, track distribution beam; 8, diaphragm plate; 9, traction jack; 10, high-strength steel bar; 11, high-strength steel bar connecting nut; 12, M24 chemical bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-3 , the present utility model provides a technical solution:

[0019] A bridge bracketless jacking, towing and translation device, comprising two groups of existing capping beams 1 and two groups of newly built capping beams 2. The two groups of newly built capping beams 2 are respectively located on one side of the two groups of existing capping beams 1. T-shaped beam plates 3 are arranged on the tops of the two groups of existing capping beams 1. Tetrafluoroethylene slide plates 4 are arranged on the tops of the existing capping beams 1. A number of groups of jacking jacks 5 are also arranged on the tetrafluoroethylene slide plates 4. A distribution beam base 6 is arranged on the top of the tetrafluoroethylene slide plate 4. A track distribution beam 7 is arranged on the top of the distribution beam base 6. A diaphragm plate 8 is installed on the top of the track distribution beam 7. A traction jack 9 is installed on the newly built capping beam 2. The output end of the traction jack 9 is connected with a high-strength deformed bar 10. One end of the high-strength deformed bar 10 is connected with a high-strength deformed bar connecting nut 11. A distribution beam base 6 (sliding shoe device) is arranged at the bottom of the diaphragm plate 8. Under the action of the traction jack 9, the traction jack 9 pulls and tension the device, drives the high-strength deformed bar 10 to move forward, and then translates the T-shaped beam plate 3;

[0020] Four groups of M24 chemical bolts 12 are fixedly installed on the top of the distribution beam base 6. The tops of the four groups of M24 chemical bolts 12 are all connected with the diaphragm plate 8. The distance between the two groups of M24 chemical bolts 12 is 0.4 - 0.5 m, and the implantation depth of the bolts is 20 cm. The width of the diaphragm plate 8 is generally 0.18 m - 0.2 m;

[0021] The four groups of M24 chemical bolts 12 are arranged at equal intervals, and the four groups of M24 chemical bolts 12 are arranged in a single row on the center line of the distribution beam base 6, which can better connect the distribution beam base 6 with the diaphragm plate 8, make the force uniform, and then facilitate the translation of the T-shaped beam plate 3;

[0022] The distribution beam base 6 and the track distribution beam 7 are integrally formed, and the track distribution beam 7 is in an H shape, which reduces the weight of the track distribution beam 7 and is convenient for transportation;

[0023] One end of the high-strength deformed bar 10 penetrates through the track distribution beam 7 and is connected with the high-strength deformed bar connecting nut 11. The high-strength deformed bar connecting nut 11 is installed on one side of the T-shaped beam plate 3;

[0024] It should be noted that the translation speed of the T-shaped beam slab 3 is controlled at 15-20 cm / min, that is, 9-12 m / h. Calculate the jacking time at a speed of 10 m / h. When starting to translate, the initial friction may be relatively large. When it is impossible to move using the traction jack 9, a starting jack can be set on the other side of the distribution beam base 6 for assistance. Before translation, carefully check whether there are foreign objects between the distribution beam base 6, the track distribution beam 7 and the tetrafluoroethylene slide plate 4 to avoid an increase in friction. When it is impossible to continue moving during the translation process, it is strictly prohibited to forcibly apply a force to move. It is necessary to stop the translation, find out the reason, and take measures before continuing to move. After starting to translate, strictly control the translation speed. The traction jack 9 applies a pulling force so that the T-shaped beam body starts to move. Before translation, mark the beam moving termination position at the corresponding position of the track distribution beam 7. When it is 10 cm away from the termination position, timely recheck the beam axis position again, slow down the translation speed, and at the same time strengthen the measurement of the beam axis position to prevent exceeding the design position. Before translation, calibrate the traction jack 9 and calculate the oil gauge reading before tensioning to ensure that the tensile force does not exceed 80% of the allowable tensile strength of the high-strength threaded steel 10. Along with the transverse movement process, timely recheck the beam axis position. When there is a large deviation, correct it in time to avoid excessive deviation when using the deviation correction device finally.

[0025] Working principle: When the utility model is in use, it avoids the secondary reinstallation after the demolition of the upper structure, and there is a certain damage to the original structure after the demolition of the upper structure. There is no need to set up a temporary support platform at the capping beam position. The on-site operation process is simple and controllable, which can greatly save the construction period and cost. There is no need to erect temporary supports, and the rapid jacking and translation of the prefabricated beam slab of the upper structure are realized. After the replacement of the pile foundation and the capping beam of the lower structure, the secondary translation is carried out, solving the technical problem of the replacement construction of the lower structure of the beam slab without cutting and demolition.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge bracketless jacking, towing and translation device, comprising two groups of existing capping beams (1) and two groups of newly built capping beams (2), characterized in that: Two groups of the newly-built capping beams (2) are respectively located on one side of two groups of existing capping beams (1). A T-shaped beam slab (3) is arranged on the top of the two groups of existing capping beams (1). A tetrafluoroethylene sliding plate (4) is arranged on the top of the existing capping beam (1). A number of groups of jacks (5) are also arranged on the tetrafluoroethylene sliding plate (4). A distribution beam base (6) is arranged on the top of the tetrafluoroethylene sliding plate (4). A track distribution beam (7) is arranged on the top of the distribution beam base (6). A diaphragm plate (8) is installed on the top of the track distribution beam (7). A traction jack (9) is installed on the newly-built capping beam (2). The output end of the traction jack (9) is connected with a high-strength threaded steel (10). One end of the high-strength threaded steel (10) is connected with a high-strength threaded steel connecting nut (11).

2. The jacking, towing and translation device for bridge without supports according to claim 1, wherein: Four groups of M24 chemical bolts (12) are fixedly installed on the top of the distribution beam base (6), and the tops of the four groups of M24 chemical bolts (12) are all connected with the diaphragm plate (8).

3. The bridge bracketless jacking, towing and translation device according to claim 2, characterized in that: The four groups of M24 chemical bolts (12) are arranged at equal intervals, and the four groups of M24 chemical bolts (12) are arranged in a single row on the center line of the distribution beam base (6).

4. A bridge bracketless jacking, towing and translation device according to claim 1, characterized in that: The distribution beam base (6) and the track distribution beam (7) are integrally formed, and the track distribution beam (7) is arranged in an H shape.

5. The bridge bracketless jacking, towing and translation device according to claim 1, characterized in that: One end of the high-strength threaded steel (10) penetrates through the track distribution beam (7) and is connected with the high-strength threaded steel connecting nut (11), and the high-strength threaded steel connecting nut (11) is installed on one side of the T-shaped beam slab (3).

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