Large-tonnage formwork erecting grouting longitudinal movable type spherical bridge support construction system and method

Abstract

The invention relates to a large-tonnage formwork erecting grouting longitudinal movable type spherical bridge support construction system and method. The construction method comprises the following construction steps that S1, an integrated small mortar in-situ stirring device is installed; s2, a support padstone and support synchronous construction system is installed; s3, a support mortar finalization heat preservation box steam curing system is installed, and the support and the support padstone are cured; s4, a mold-closed grouting system is installed; and S5, the open type circulating grouting system is installed. According to the integrated small in-situ mortar stirring device, the electric steel wheels are arranged, so that movement is convenient, the stirring efficiency of mortar can be improved, and the construction speed is increased; according to the synchronous construction system for the support cushion stone and the support, the construction quality of the support and the support cushion stone can be improved, the integrity of the support and the support cushion stone is improved, and the whole support further has a good guiding effect; the support mortar finalization heat preservation box steam curing system effectively solves the problem that the heat preservation box steam curing degree is difficult to control, and the situation that the curing quality is affected by too high curing temperature and humidity is avoided.

Description

Technical Field

[0001] The invention relates to a large-tonnage formwork grouting longitudinally movable spherical bridge bearing construction system and method, belongs to the technical field of highway bridges, and is suitable for the construction of longitudinally movable spherical bridge bearings. Background Art

[0002] With the development of my country's social and economic construction, transportation infrastructure is becoming more and more complete. As the key to transportation infrastructure, the number of bridges is increasing year by year. Bridge bearings bear all the upper structure loads and traffic loads of the bridge. The quality of their construction determines the service life of the bearings, which has a vital impact on the safety of the bridge during construction and use. They are important force transmission devices of the bridge.

[0003] However, the current bearing construction encounters many problems. On the one hand, the causes of the quality defects of the bearing pad stone. The concrete strength of the bridge bearing pad stone does not meet the standard, which hides various quality problems that threaten the concrete quality, such as the height of the bearing pad stone does not meet the standard, the depth of the reserved hollow slab anchor bolt hole is not enough, and there is a series of quality problems and defects in the pad stone steel bar protection layer. On the other hand, the hazards caused by the quality defects of the bearing pad stone. The static load and dynamic load formed on the upper part of the bridge are directly transmitted to the lower part of the bridge and the foundation structure under the medium of the rubber bearing, so that this part receives a large amount of external pressure. Under the action of the dynamic load of the vehicle, the position of the bridge bearing pad stone is biased and compressed or emptied, which makes the rubber bearing and the bearing pad stone unevenly stressed, causing local severe deformation, shortening the overall service life of the bridge bearing pad stone, and thus causing the bridge deck system, expansion joint damage, and rubber bearing damage. If the cause cannot be found in time for repair and improvement, the cost of daily maintenance and replacement of rubber bearings will increase in the future.

[0004] For the construction of longitudinally movable spherical bridge bearings, it is urgent to propose a construction method that can improve construction efficiency while ensuring project quality and safety. Summary of the invention

[0005] The purpose of the present invention is to provide a large-tonnage formwork grouting longitudinal movable spherical bridge bearing construction method, which is used to improve the construction efficiency of the longitudinal movable spherical bridge bearing, ensure construction safety, and ensure the quality and safety of the project. To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A large-tonnage vertical formwork grouting longitudinal movable spherical bridge bearing construction method comprises the following specific steps:

[0007] S1. Install an integrated small-scale mortar in-situ mixing device: assemble the electric steel wheel, the bottom plate, the retractable support, the mixing tank and the fixed rod, install the electric steel wheel at the lower end of the bottom plate, install the fixed rod on the bottom plate, and install the mixing tank at the upper end of the fixed rod; at the same time, install the retractable support at the lower end of the bottom plate; then install the electric mixing system, which includes a motor, a mixing shaft, a mixing rod, a sealing bolt and a sleeve, install the motor on the bottom plate, install the mixing shaft in the mixing tank, and the lower end of the mixing shaft passes through the bottom of the mixing tank and is connected to the output shaft of the motor; install the mixing rod at the top of the mixing shaft, and finally make a pair of lifting ears and a pair of discharge ports symmetrically on the left and right sides of the mixing tank;

[0008] S2. Install the bearing pad stone and the bearing synchronous construction system: assemble the transverse displacement adjustment rod, the longitudinal I-beam distribution beam and the support rod together, fix the lower end of the support rod on the construction floor, install the longitudinal I-beam distribution beam on the top of the support rod, install the transverse displacement adjustment rod between the longitudinal I-beam distribution beams, and then assemble the bearing template and the bearing pad stone template, and connect the bearing template with the bearing pad stone template to form a whole; install a connecting rod at the upper end of the bearing template, and connect the upper end of the connecting rod to the transverse displacement adjustment rod through a height adjuster; cast the bearing and the bearing pad stone through the bearing template and the bearing pad stone template;

[0009] S3. Install the bearing mortar shaping insulation box steam curing system to maintain the bearing and bearing pad stone;

[0010] S4, installation mold closed grouting system;

[0011] S5. Install an open circulation grouting system.

[0012] Preferably, in step S1, a sealing bolt and a sleeve are installed at the top end of the stirring shaft, and the stirring rod is fastened to the top end of the stirring shaft by the sealing bolt and the sleeve.

[0013] Preferably, in step S1, a rod bottom reinforcing steel plate is welded at the bottom of the support rod to increase the supporting strength of the support rod.

[0014] Preferably, the specific operation method of step S3 is as follows: install an insulation box on the outside of the support and the support pad stone, install a steam input pipe and a data transmission line on the moisturizing box, and install a humidity sensor and a temperature sensor in the moisturizing box, the humidity sensor and the temperature sensor are both connected to the data transmission line, the data transmission line is simultaneously connected to an alarm device and a temperature and humidity measuring instrument, steam of a certain temperature is input into the moisturizing box through the steam input pipe, and the temperature and humidity inside the moisturizing box are monitored in real time through the temperature sensor and the humidity sensor; when the temperature or humidity in the moisturizing box exceeds a preset safety range, the alarm device sounds an alarm.

[0015] Preferably, the specific method of step S4 is as follows: first, a steel base plate, retaining concrete, sealing channel steel and steel cover plate are constructed, the steel base plate is arranged at the bottom of the retaining concrete, the sealing channel steel is arranged at the upper end of the retaining concrete, a sealing strip is arranged under the steel cover plate, the steel cover plate is arranged on the sealing channel steel, and the lower end of the steel cover plate is sealed and contacted with the sealing channel steel through the sealing strip; then, a grouting pipe, a slurry discharge pipe and a small exhaust steel pipe are installed on the sealing channel steel.

[0016] Preferably, the specific method of step S5 is as follows: the open circulation grouting system includes an integral steel formwork consisting of a bottom platform and a top platform, the top platform is connected to the bottom platform by anchor bolts, and a slurry outlet is set on the side of the bottom platform; a grouting port is set on the top platform.

[0017] The invention discloses a large-tonnage formwork grouting longitudinally movable spherical bridge bearing construction system, which is obtained by a large-tonnage formwork grouting longitudinally movable spherical bridge bearing construction method.

[0018] The beneficial effects of the present invention are:

[0019] (1) The integrated small-scale in-situ mortar mixing device is equipped with an electric steel wheel for easy movement, which can improve the mixing efficiency of the mortar and speed up the construction;

[0020] (2) The synchronous construction system of the bearing pad stone and the bearing can improve the construction quality of the bearing and the bearing pad stone, improve the integrity of the bearing and the bearing pad stone, and the overall support also has a good guiding effect;

[0021] (3) The support mortar shaping insulation box steam curing system effectively solves the problem of difficult control of the degree of steam curing of the insulation box, and avoids the impact of excessive curing temperature and humidity on the curing quality;

[0022] (4) The closed formwork grouting technology and the open circulation grouting technology are easy to construct, simple to operate, have reasonable force forms, and have good technical and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of an integrated small-scale mortar in-situ mixing device;

[0024] Figure 2 This is a schematic diagram of the system structure for synchronous construction of the support pad stone and the support;

[0025] Figure 3 It is a plan view of the synchronous construction system of the bearing pad stone and the bearing;

[0026] Figure 4 This is a schematic diagram of the steam curing system structure for the support mortar shaping insulation box;

[0027] Figure 5It is a structural schematic diagram of the closed grouting system of the vertical formwork;

[0028] Figure 6 It is a structural schematic diagram of an open circulation grouting system;

[0029] Figure 7 It is a side view of an open circulation grouting system;

[0030] Description of the accompanying drawings: 1. Electric steel wheel, 2. Motor, 3. Retractable support, 4. Fixed rod, 5. Bottom plate, 6. Discharge port, 7. Stirring shaft, 8. Stirring rod, 9. Sealing bolt, 10. Sleeve, 11. Lifting ear, 12. Stirring tank, 13. Support template, 14. Support pad stone template, 15. Rod bottom reinforcement steel plate, 16. Steel pad, 17. Vertical height adjuster, 18. Horizontal displacement adjustment rod, 19. Longitudinal I-beam distribution beam, 20. Support rod, 21. Support, 2 2. Support pad stone, 23. Steam input pipe, 24. Insulation box, 25. Data transmission line, 26. Temperature and humidity measuring instrument, 27. Alarm device, 28. Steel bottom plate, 29. Grouting pipe, 30. Sealing channel steel, 31. Small exhaust steel pipe, 32. Steel cover plate, 33. Sealing strip, 34. Slurry discharge pipe, 35. Sealing concrete, 36. Slurry outlet, 37. Steel formwork, 38. Anchor bolt, 39. Grouting port, 40. Bottom platform, 41. Top platform, 42. Connecting rod. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. In addition, it should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0032] Embodiment 1:

[0033] The construction method of large-tonnage vertical formwork grouting longitudinal movable spherical bridge bearing includes the following specific steps:

[0034] S1. Install an integrated small-scale mortar in-situ mixing device: assemble the electric steel wheel 1, the base plate 5, the telescopic support 3, the mixing tank 12 and the fixed rod 4, install the electric steel wheel 1 at the lower end of the base plate 5, install the fixed rod 4 on the base plate 5, and install the mixing tank 12 on the upper end of the fixed rod 4; at the same time, install the telescopic support 3 at the lower end of the base plate 5; then install the electric mixing system, which includes a motor 2, a mixing shaft 7, a mixing rod 8, a sealing bolt 9 and a sleeve 10, install the motor 2 on the base plate 5, and the mixing shaft 7 in the mixing tank 12, and the lower end of the mixing shaft 7 passes through the bottom of the mixing tank 12 and is connected to the output shaft of the motor 2; install the mixing rod 8 on the top of the mixing shaft 7, and then install the sealing bolt 9 and the sleeve 10 on the top of the mixing shaft 7, and fasten the mixing rod 8 to the top of the mixing shaft 7 through the sealing bolt 9 and the sleeve 10; finally, a pair of lifting ears 11 and a pair of discharge ports 6 are symmetrically applied on the mixing tank 12.

[0035] S2. Install the bearing pad stone and the bearing synchronous construction system: assemble the transverse displacement adjustment rod 18, the longitudinal I-beam distribution beam 19 and the support rod 20 together, fix the lower end of the support rod 20 on the construction floor, and weld the bottom reinforcement steel plate 15 at the bottom of the support rod 20 to increase the supporting strength of the support rod; the longitudinal I-beam distribution beam 19 is installed on the top of the support rod 20, and the transverse displacement adjustment rod 18 is installed between the longitudinal I-beam distribution beams 19, and then assemble the bearing formwork 13 and the bearing pad stone formwork 14, and connect the bearing formwork 13 with the bearing pad stone formwork 14 to form a whole; install a connecting rod 42 at the upper end of the bearing formwork 13, and the upper end of the connecting rod 42 is connected to the transverse displacement adjustment rod 18 through a height adjuster 17; cast the bearing 21 and the bearing pad stone 22 through the bearing formwork 13 and the bearing pad stone formwork 14.

[0036] S3. Install the bearing mortar-shaped insulation box steam curing system: After the bearing 21 and the bearing cushion stone 22 are cast, remove the bearing formwork 13 and the bearing cushion stone formwork 14, install the insulation box 24 on the outside of the bearing 21 and the bearing cushion stone 22, install the steam input pipe 23 and the data transmission line 25 on the moisturizing box 24, and install a humidity sensor and a temperature sensor in the moisturizing box 24. The humidity sensor and the temperature sensor are both connected to the data transmission line 25. The data transmission line 25 is also connected to the alarm device 27 and the temperature and humidity measuring instrument 26. Steam of a certain temperature is input into the moisturizing box 24 through the steam input pipe 23. The temperature and humidity inside the moisturizing box 24 are monitored in real time through the temperature sensor and the humidity sensor. When the temperature or humidity in the moisturizing box exceeds the preset safety range, the alarm device 27 sounds an alarm to prompt the construction personnel to adjust the temperature or humidity in the insulation box 24 in time.

[0037] S4. Install the closed grouting system: first, construct the steel bottom plate 28, the retaining concrete 35, the sealing channel steel 30 and the steel cover plate 32. The steel bottom plate 28 is set at the bottom of the retaining concrete 35. The sealing channel steel 30 is set at the upper end of the retaining concrete 35. A sealing strip 33 is set under the steel cover plate 32. The steel cover plate 32 is set on the sealing channel steel 30. The lower end of the steel cover plate 32 is sealed and contacted with the sealing channel steel 30 through the sealing strip 33. Then, the grouting pipe 29, the slurry discharge pipe 34 and the exhaust small steel pipe 31 are installed on the sealing channel steel 30.

[0038] S5. Install an open circulation grouting system: The open circulation grouting system includes an integral steel formwork 37 consisting of a bottom platform 40 and a top platform 41. The top platform 41 is connected to the bottom platform 40 by anchor bolts 38. A grout outlet 36 is provided on the side of the bottom platform 40; and a grouting port 39 is provided on the top platform 41.

[0039] Embodiment 2:

[0040] The present invention relates to a large-tonnage formwork grouting longitudinally movable spherical bridge bearing construction system, comprising an integrated small-scale mortar in-situ stirring device, a bearing cushion stone and bearing synchronous construction system, a bearing mortar shaping insulation box steam curing system, a formwork closed grouting system, and an open circulation grouting system.

[0041] like Figure 1As shown, the integrated small-scale in-situ mortar mixing device is composed of an upper structure and a lower structure. The upper structure includes a discharge port 6, a stirring shaft 7, a stirring rod 8, a sealing bolt 9, a sleeve 10, a stirring tank 12 and a lifting ear 11; the stirring shaft 7 penetrates into the stirring tank 12 from the bottom of the stirring tank 12, the stirring rod 8 is installed on the stirring shaft 7, the sleeve 10 and the sealing bolt 9 are connected to the upper end of the stirring shaft 7, the stirring rod 8 is fixed to the stirring shaft 7 by the sealing bolt 9 and the sleeve 10, and the lifting ear 11 is arranged on both sides of the upper end of the stirring tank 12; the discharge port 6 is arranged on both sides of the bottom of the stirring tank 12; the lower structure is composed of an electric steel wheel 1, a motor 2, a telescopic support 3, a fixing rod 4 and a bottom plate 5, and the bottom plate 5 is connected to the bottom of the stirring tank 12 through the fixing rod 4. The electric steel wheel 1 is arranged at the bottom of the bottom plate 5, the motor 2 is arranged on the bottom plate 5, and the output shaft of the motor 2 is connected to the lower end of the stirring shaft 7 for driving the stirring shaft 7 to rotate. The retractable support 3 is arranged at the bottom of the mixing tank 12. When the integrated small-sized mortar in-situ mixing device is in use, the retractable support 3 is in an extended state and the lower end of the retractable support 3 is in contact with the ground, and the mixing tank 12 is supported by the retractable support 3. When the integrated small-sized mortar in-situ mixing device is in a moving state, the retractable support 3 is retracted, and the lower end of the retractable support 3 is out of contact with the ground, so that the electric steel wheel 1 is in contact with the ground. In the present application, the electric steel wheel 1 is a walking device driven by a motor, which is used to drive the integrated small-sized mortar in-situ mixing device to move. The integrated small-sized mortar in-situ mixing device is used to mix concrete and provide raw materials for subsequent concrete pouring construction.

[0042] like Figure 2 , Figure 3As shown, the bearing pad stone and bearing synchronous construction system includes a bearing template 13, a bearing pad stone template 14 and a frame support adjustment system arranged on the construction floor. The bearing template 13 is arranged on the bearing pad stone template 14. The frame support adjustment system includes a support rod 20, a rod bottom reinforcement steel plate 15, a longitudinal I-beam distribution beam 19, a lateral displacement adjustment rod 18, a steel pad 16, and a vertical height adjuster 17. The lower end of the support rod 20 is provided with a rod bottom reinforcement steel plate 15, and the longitudinal I-beam distribution beam 19 is arranged at the upper end of the support rod 20. The longitudinal I-beam distribution beam 19 is supported by the support rod 20; The transverse displacement adjustment rod 18 is arranged between the longitudinal I-beam distribution beams 19, and the transverse displacement adjustment rod 18 can be moved and adjusted along the length direction of the longitudinal I-beam distribution beam 19; the support formwork 13 is connected to the transverse displacement adjustment rod 18 through the connecting rod 42, the lower end of the transverse displacement adjustment rod 18 is connected to the support formwork 13, and the upper end of the transverse displacement adjustment rod 18 is connected to the transverse displacement adjustment rod 18 through the vertical height adjuster 17, and the steel pad 16 is arranged between the vertical height adjuster 17 and the transverse displacement adjustment rod 18, and the height of the support formwork 13 is adjusted by the vertical height adjuster 17. A gasket is arranged between the vertical height adjuster 17 and the transverse displacement adjustment rod 18. The support 21 and the support pad stone 22 are cast and constructed through the support formwork 13 and the support pad stone formwork 14.

[0043] like Figure 4 As shown, the support mortar shaping insulation box steam curing system includes an insulation box, in which a steam input pipe 23 and a data transmission line 25 are connected. The data transmission line 25 is connected to a temperature sensor and a humidity sensor arranged inside the insulation box 24. The data transmission line 25 is also connected to an alarm device 27 and a temperature and humidity measuring instrument 26. The temperature and humidity inside the moisturizing box 24 are monitored in real time through the temperature sensor and the humidity sensor.

[0044] like Figure 5 As shown, the closed grouting system of the vertical formwork includes a steel bottom plate 28, a sealing concrete 35, a sealing channel steel 30, a grouting pipe 29, a grouting pipe 34, and a small exhaust steel pipe 31. The sealing concrete 35 is annular in structure. The sealing channel steel 30 is arranged at the upper end of the sealing concrete 35. The steel bottom plate 28 is located at the bottom of the sealing concrete 35. The steel cover plate 32 is arranged on the sealing channel steel 30. A sealing strip 33 is arranged at the lower end of the steel cover plate 32. The sealing strip 33 makes the lower end of the steel cover plate 32 and the sealing channel steel 30 in sealed contact. The grouting pipe 29, the grouting pipe 34, and the small exhaust steel pipe 31 are all arranged on the sealing channel steel 30. The grouting pipe 29 and the grouting pipe 34 are located on both sides of the sealing channel steel 30. The sealing concrete 35, the steel bottom plate 28, the sealing channel steel 30, and the steel cover plate 32 together enclose a casting space, and concrete is injected into the casting space through the grouting pipe 29.

[0045] like Figure 6, Figure 7 As shown, the open circulation grouting system includes an integral steel formwork 37 consisting of a bottom platform 40 and a top platform 41, wherein a grout outlet 36 is provided on the side of the bottom platform 40; the top platform 41 is cylindrical, and a grouting port 39 is provided on the top platform 41, and the top platform 41 is connected to the bottom platform 40 through an anchor bolt 38. A casting space is provided in the bottom platform 40 and the top platform 41, and concrete is injected into the casting space through the grouting port 39.

[0046] Among them, the open circulation grouting system and the vertical formwork closed grouting system are both used to cast the concrete base, and the concrete base is used to install the spherical bridge bearing.

[0047] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A large-tonnage vertical formwork grouting longitudinal movable spherical bridge bearing construction method, characterized in that: The specific steps include: S1. Installing an integrated small-sized mortar in-situ mixing device: assembling an electric steel wheel (1), a base plate (5), a retractable support (3), a mixing tank (12) and a fixed rod (4); installing the electric steel wheel (1) at the lower end of the base plate (5); installing the fixed rod (4) on the base plate (5); and installing the mixing tank (12) at the upper end of the fixed rod (4); and installing the retractable support (3) at the lower end of the base plate (5); and then installing an electric mixing system, which includes an electric mixing system; A motor (2), a stirring shaft (7), a stirring rod (8), a sealing bolt (9) and a sleeve (10); the motor (2) is mounted on a bottom plate (5); the stirring shaft (7) is mounted in a stirring tank (12); the lower end of the stirring shaft (7) passes through the bottom of the stirring tank (12) and is connected to the output shaft of the motor (2); the stirring rod (8) is mounted on the top of the stirring shaft (7); and finally, a pair of lifting ears (11) and a pair of discharge ports (6) are symmetrically provided on the stirring tank (12); S2, installation of the bearing pad stone and bearing synchronous construction system: assemble the transverse displacement adjustment rod (18), the longitudinal I-beam distribution beam (19) and the support rod (20) together, fix the lower end of the support rod (20) on the construction floor, install the longitudinal I-beam distribution beam (19) on the top of the support rod (20), install the transverse displacement adjustment rod (18) between the longitudinal I-beam distribution beam (19), and then assemble the bearing template (13) and the bearing pad stone template (14), and connect the bearing template (13) with the bearing pad stone template (14) to form a whole; install a connecting rod (42) at the upper end of the bearing template (13), and the upper end of the connecting rod (42) is connected to the transverse displacement adjustment rod (18) through the height adjuster (17); cast the bearing (21) and the bearing pad stone (22) through the bearing template (13) and the bearing pad stone template (14); S3, installing a support mortar shaping insulation box steam curing system to cure the support (21) and the support pad stone (22); S4, installation mold closed grouting system; S5. Install an open circulation grouting system.

2. The large-tonnage vertical grouting longitudinal movable spherical bridge bearing construction method according to claim 1 is characterized in that: In step S1, a sealing bolt (9) and a sleeve (10) are installed at the top end of the stirring shaft (7), and the stirring rod (8) is fastened and installed at the top end of the stirring shaft (7) by the sealing bolt (9) and the sleeve (10).

3. The large-tonnage vertical grouting longitudinal movable spherical bridge bearing construction method according to claim 1 is characterized in that: In step S1, a rod bottom reinforcement steel plate (15) is welded at the bottom of the support rod (20) to increase the support strength of the support rod (20).

4. The large-tonnage vertical grouting longitudinal movable spherical bridge bearing construction method according to claim 1 is characterized in that: The specific operation method of step S3 is as follows: an insulation box (24) is installed on the outer side of the support (21) and the support pad stone (22), a steam input pipe (23) and a data transmission line (25) are installed on the moisturizing box (24), and a humidity sensor and a temperature sensor are installed in the moisturizing box (24), the humidity sensor and the temperature sensor are both connected to the data transmission line (25), and the data transmission line (25) is simultaneously connected to an alarm device (27) and a temperature and humidity measuring instrument (26), steam of a certain temperature is input into the moisturizing box (24) through the steam input pipe (23), and the temperature and humidity inside the moisturizing box (24) are monitored in real time through the temperature sensor and the humidity sensor; when the temperature or humidity in the moisturizing box exceeds a preset safety range, the alarm device (27) sends an alarm.

5. The large-tonnage vertical grouting longitudinal movable spherical bridge bearing construction method according to claim 1 is characterized in that: The specific method of step S4 is as follows: first, a steel base plate (28), a sealing concrete (35), a sealing channel steel (30) and a steel cover plate (32) are constructed, wherein the steel base plate (28) is arranged at the bottom of the sealing concrete (35), the sealing channel steel (30) is arranged at the upper end of the sealing concrete (35), a sealing strip (33) is arranged under the steel cover plate (32), the steel cover plate (32) is arranged on the sealing channel steel (30), and the lower end of the steel cover plate (32) is sealed and contacted with the sealing channel steel (30) through the sealing strip (33); then, a grouting pipe (29), a grouting pipe (34) and a small exhaust steel pipe (31) are installed on the sealing channel steel (30).

6. The large-tonnage vertical grouting longitudinal movable spherical bridge bearing construction method according to claim 1 is characterized in that: The specific method of step S5 is as follows: the open circulating grouting system includes an integral steel formwork (37) consisting of a bottom platform (40) and a top platform (41); the top platform (41) is connected to the bottom platform (40) by anchor bolts (38); a grout outlet (36) is provided on the side of the bottom platform (40); and a grouting port (39) is provided on the top platform (41).

7. A large-tonnage vertical formwork grouting longitudinally movable spherical bridge bearing construction system, characterized in that: The large-tonnage vertical formwork grouting longitudinally movable spherical bridge bearing is constructed by the construction method described in any one of claims 1-6.

Images