CN114808721B - Intelligent counterweight construction method and system for closure section of cast-in-situ continuous beam bridge - Google Patents
Intelligent counterweight construction method and system for closure section of cast-in-situ continuous beam bridge Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 255
- 238000005303 weighing Methods 0.000 claims abstract description 57
- 238000004873 anchoring Methods 0.000 claims abstract description 4
- 238000005266 casting Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims 1
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- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention discloses an intelligent counterweight construction method and system for a closure section of a cast-in-situ continuous beam bridge, wherein the intelligent construction steps are as follows: (1) Installing closure section intelligent water tank counterweight systems on the beam bodies at two sides of the closure section, installing weighing modules between the hanger anchoring bolts and the beam bodies at two sides of the closure section, leveling, and reading stable initial weighing by a central controller; (2) The weight load of the near end and the far end in the initial state is determined by the construction balance design, and the water tank is quantitatively added with water for balancing; (3) After closure locking, the lowest temperature of the current day is selected to pour concrete, a weighing module transmits data to a central controller in real time during pouring, the central controller converts the weight increment of the concrete into the water quantity decrement of a water tank, and synchronously transmits signals to a quantitative switch to discharge water in real time with equal mass; and (4) pouring the closure section. The construction method has the advantages that the load change is mastered in real time, the counterweight of the water tank is intelligently adjusted according to the feeding condition, and the overall weight is ensured not to change in the bridge pouring process.
Description
Technical Field
The invention relates to the technical field of bridge closure counterweight construction, in particular to an intelligent counterweight construction method and system for a closure section of a cast-in-situ continuous beam bridge.
Background
With the rapid development of the economic society in China, the traffic demand is continuously increased, and the proportion of continuous girder bridges, continuous rigid frame bridges and arch bridges constructed by sections in highway engineering is increased. Closure is an important link of continuous beam, continuous rigid frame construction and system conversion, and closure section construction must meet the design requirement of stress state, maintain beam body linearity and control closure section construction error.
However, the traditional closure section construction generally adopts a mode of respectively stacking sand bags, water tanks, water bags or concrete precast blocks on the beam bodies at two sides of the closure section for counterweight, and the counterweight modes are often complex in operation procedure and low in efficiency, cannot obtain the actual concrete pouring amount in the weight reduction process, cannot uniformly and symmetrically reduce the balance weight at two sides, and cannot well guarantee the construction quality of the closure section. Therefore, how to accurately acquire the weight change of the closure section and balance the load of the poured concrete and the counterweight in real time is a very critical construction technical measure.
Disclosure of Invention
The invention aims to provide an intelligent counterweight construction method and system for a closure section of a cast-in-situ continuous beam bridge, and the intelligent water tank counterweight system and the counterweight method can solve the technical problems, are simple in components and convenient to install, can grasp load change in real time, intelligently adjust the water tank counterweight according to feeding conditions, ensure that the total weight is not changed in the pouring process of the bridge, and further complete closure section system conversion.
In order to achieve the purpose of the invention, the technical scheme adopted is as follows:
the intelligent counterweight construction method of the closure section of the cast-in-situ continuous beam bridge comprises the following steps:
(1) And installing closure section intelligent water tank counterweight systems on the beam bodies at two sides of the closure section, wherein the hanging bracket directly adopts a bottom basket and a template system of a construction hanging basket, a weighing module is additionally arranged between the hanging bracket anchoring bolt and the beam bodies at two sides of the closure section and is leveled, and a central controller reads stable initial weighing.
(2) The weight load of the near end and the far end in the initial state is determined by the construction balance design, the weight load is converted into water quantity, a central controller sends out a quantitative water adding instruction, and a quantitative switch automatically closes a water inlet valve after the water tank reaches the preset water quantity, so that the weight application is completed.
(3) After closure locking, the lowest temperature of the current day is selected to pour concrete, a weighing module transmits data to a central controller in real time during pouring, the central controller converts the weight increment of the concrete into the water quantity decrement of a water tank, and synchronously transmits signals to a quantitative switch of a counterweight system to discharge water in real time with equal mass; an electromagnetic flowmeter is arranged on the pump pipe, and the readings are used as concrete weight references, so that accurate readings are ensured.
(4) And (5) pouring the closure section.
Further preferred is: the intelligent water tank counterweight system comprises a hanging bracket, a weighing module, a counterweight module and a central controller, wherein the hanging bracket is hung at the bottoms of two side beam bodies of the closure section through hanging straps, and a lower longitudinal beam is arranged at the bottom support of the hanging bracket; the hanging strip penetrates through the lower longitudinal beam and the beam bodies on two sides of the closure section, anchoring bolts are tightened on the hanging strip on the bottom surface of the lower longitudinal beam and the top surface of the beam bodies on two sides of the closure section, a sleeve for isolating from concrete is sleeved on the hanging strip, and the diameter of the sleeve is slightly larger than that of the hanging strip; the weighing module is arranged between the anchor bolt and the leveling device, and the top surface and the bottom surface of the leveling device are respectively clung to the bottom of the weighing module and the tops of the two side beams of the closure section; two groups of counterweight modules are symmetrically arranged on the top surfaces of the beam bodies at two sides of the closure section, and each group of counterweight module comprises a water tank and a water pump for filling and draining counterweights into the water tank; the central controller reads the weight information of the weighing module and controls the water pump to fill and drain water.
Further preferred is: the weighing module is a pressure sensor, a wiring port is reserved on the weighing module, the weighing module is connected with the central controller through a connecting wire, data are transmitted to the central controller through the connecting wire, and the weighing module is positioned in an inner box of the bridge, and the connecting wire penetrates through the sleeve and extends out of the bridge deck to be connected with the central controller; the measuring range of the weighing module is larger than the total balance weight load/suspender quantity; the central controller comprises a wiring port, a display and a controller, one end of a connecting wire is connected with the wiring port of the central controller, and the other end of the connecting wire is respectively connected with the weighing module.
Further preferred is: the middle part of the leveler is provided with a hole, and the aperture is matched with the diameter of the hanging strip; the top surface of the leveler is provided with a universal leveling bubble, and the bottom of the leveler is provided with a plurality of adjustable supporting legs for fine leveling.
Further preferred is: the upper part of the water tank is provided with a water inlet valve, the lower part of the water tank is provided with a water outlet valve, and the water inlet valve and the water outlet valve have the same pipe diameters and are matched with the water inlet end and the water outlet end of the water pump.
Further preferred is: the water pump is provided with a quantitative switch for controlling the water yield and the water outlet flow rate; the quantitative switch is connected with the central controller through a connecting wire.
Further preferred is: when the weight of the water tank is reduced, the water outlet valve is connected with the water inlet end of the water pump, and the pumped water is discharged along the water inlet pipe through the water outlet end of the water pump; and after the water inlet and outlet flow indicated by the central controller is reached, the quantitative switch is automatically turned off.
Further preferred is: and pouring concrete is conveyed between the beam bodies on two sides of the closure section through pump pipes, an electromagnetic flowmeter is arranged between the two sections of pump pipes close to the discharge hole, pipe diameters of two ends of the electromagnetic flowmeter are matched with the pump pipes, a wiring port is reserved, and the electromagnetic flowmeter is connected with the central controller through a connecting wire.
The intelligent counterweight construction method and system for the closure section of the cast-in-situ continuous beam bridge have the advantages that:
1. the weight increment of the concrete can be directly read through the weighing module, the reading of the electromagnetic flowmeter can be used as the reading reference of the concrete square quantity, the water inlet and outlet amount of the water tank is determined by the central controller in a conversion way, the data acquisition is more standard and scientific, the concrete is poured, the concrete is weighed immediately, then the water valve is automatically controlled to discharge water with the same weight as the newly poured concrete, the total weight is ensured not to change in the bridge pouring process, the weight is accurately controlled and adjusted in real time, the beam height is not changed before the newly poured concrete is not coagulated, and cracks caused by deflection of the concrete are avoided.
2. The central controller sends out a quantitative water adding instruction, synchronous and uniform water adding of the water tanks at two sides of the closure section is realized through a quantitative switch, the water inlet valve is automatically closed after the preset water amount is reached, and the counterweight application has the obvious advantages of synchronization and accuracy; in the pouring process, the weighing module feeds back the weight increment of concrete in real time, the central controller converts the weight increment into the water quantity decrement of the water tank, and sends a quantitative water adding instruction to the quantitative switch, the water tank automatically shuts off the water inlet valve after reaching the preset water quantity, the counterweight application is completed, and the weight reduction process has the obvious advantages of synchronization and accuracy.
3. The components are simple and convenient to install, and a set of central controller is adopted to process information, so that great guarantee is provided for the synchronism of data transmission and counterweight control.
Drawings
FIG. 1 is a schematic diagram of the overall structural arrangement of an intelligent water tank counterweight system employed;
FIG. 2 is a schematic diagram of a connection arrangement of a central control module employed;
FIG. 3 is a schematic view of a mounting arrangement for a hanger;
FIG. 4 is a schematic diagram of an employed counterweight module;
FIG. 5 is a schematic diagram of an employed loading module;
FIG. 6 is a schematic view of the weighing module installation of FIG. 3;
FIG. 7 is a schematic diagram of the central controller of FIG. 2;
the names corresponding to the serial numbers in the figures are:
1. a hanging bracket; 2. a weighing module; 3. a water tank; 4. a water pump; 5. a leveler; 6. beam bodies at two sides of the closure section; 7. a side sill; 8. a hanging belt; 9. an anchor bolt, 10, a sleeve; 11. a connecting wire; 12. a water inlet valve; 13. a water outlet valve; 14. a water inlet end; 15. a water outlet end; 16. a quantitative switch; 17. a pump tube; 18. an electromagnetic flowmeter; 19. a wiring port; 20. a display; 21. a controller; 22. leveling the air bubble; 23. the legs can be adjusted.
Detailed Description
For a clearer description of the present technology, the present technology is further described in detail below with reference to the accompanying drawings and examples.
Example 1
The construction of the cast-in-situ continuous beam bridge closure section counterweight can be completed through the following steps:
(1) The intelligent water tank counterweight system of the closure section is arranged on the beam bodies at two sides of the closure section and comprises a hanger 1, a weighing module 2, a counterweight module and a central controller. The hanging bracket 1 directly adopts a bottom basket and template system of a construction hanging basket, the hanging bracket 1 is hung on beam bodies 6 on two sides of a closure section through hanging straps 8, a lower longitudinal beam 7 is arranged at the bottom to support the hanging straps 8, the hanging straps 8 penetrate through the lower longitudinal beam 7 and the beam bodies 6 on two sides of the closure section, two ends of the hanging straps are respectively tightened by anchor bolts 9, sleeves 10 are externally penetrated by the hanging straps 8 to be isolated from concrete, the diameter of each sleeve 10 is slightly larger than that of the hanging straps 1, the weighing module 2 is arranged between the anchor bolts 9 and the leveling device 5, the top surface and the bottom surface of the leveling device 5 are respectively clung to the bottom of the weighing module 2 and the top of the beam bodies 6 on two sides of the closure section, and a central controller reads stable initial weighing; the weighing module 2 is a pressure type sensor, is connected with the central controller through a connecting wire 11, and is positioned in the weighing module 2 of the inner box, and the connecting wire 11 of the weighing module passes through the sleeve 10 to extend out of the bridge deck to be connected with the central controller; the weighing module 2 is reserved with a wiring port 19, and data are transmitted to the central controller through a connecting wire 11; the measuring range of the weighing module 2 should be larger than the total balance weight load/boom number; the middle part of the leveler 5 is provided with a hole, and the aperture is matched with the diameter of the hanging strip 8; the top surface of the leveler 5 is provided with universal leveling bubbles 22, and the bottom is provided with a plurality of adjustable supporting legs 23 for fine leveling.
(2) The weight load of the near end and the far end in the initial state is determined by construction balance design, two groups of beam bodies 6 on two sides of the closure section are symmetrically arranged in the weight system, each group of weight system comprises a water tank 3 and a water pump 4, the upper part of the water tank 3 is provided with a water inlet valve 12, the lower part of the water tank is provided with a water outlet valve 13, the pipe diameters of the water inlet valve 12 and the water outlet valve 13 are the same, the water inlet valve 12 and the water outlet valve 13 are matched with a water inlet end 14 and a water outlet end 15 of the water pump 4, and the water pump 4 controls the water outlet quantity and the water outlet flow rate by a quantitative switch 16; when the water tank 3 is filled with water and is balanced, the water inlet valve 12 is connected with the water outlet end 15 of the water pump 4, the water inlet end 14 of the water pump 4 is provided with a water inlet pipe for collecting water from a water source, a central controller sends out a quantitative water adding instruction after the balance weight load is converted into water quantity, the water tank 3 is filled with water and is balanced through the water pump 4, and a quantitative switch 16 automatically closes the water inlet valve after the water tank 3 reaches the preset water quantity, so that the balance weight application is completed.
(3) After closure locking, casting concrete at the lowest temperature of the same day is selected, casting concrete between two side beam bodies 6 of the closure section through pump pipes 17, an electromagnetic flowmeter 18 is arranged between two sections of pump pipes 17 close to a discharge hole, pipe diameters of two ends of the electromagnetic flowmeter 18 are matched with the pump pipes 17, and a wiring port 19 is reserved; the central controller comprises a wiring port 19, a display 20 and a controller 21, one end of a connecting wire 11 is connected with the wiring port 19 of the central controller, and the other end of the connecting wire is respectively connected with the weighing module 2, the electromagnetic flowmeter 18 and the quantitative switch 16; the weighing module 2 transmits data to the central controller in real time during pouring, the controller 21 converts the weight increment of concrete into the water quantity decrement of the water tank 3, synchronously transmits signals to the counterweight system quantitative switch 16, when the weight of water in the water tank 3 is reduced, the water outlet valve 13 is connected with the water inlet end 14 of the water pump 4, and the pumped water is discharged along the water inlet pipe through the water outlet end 15 of the water pump 4, so that real-time equal-quality water discharge is finally realized. The reading of the electromagnetic flowmeter 18 of the pump pipe 17 is used as a concrete weight reference, so that accurate reading is ensured.
(4) And (5) pouring the closure section.
Example 2
The construction of the cast-in-situ continuous beam bridge closure section counterweight can be completed through the following steps:
(1) The intelligent water tank counterweight system of the closure section is arranged on the beam bodies at two sides of the closure section and comprises a hanger 1, a weighing module 2, a counterweight module and a central controller. The hanging bracket 1 directly adopts a bottom basket and template system of a construction hanging basket, the hanging bracket 1 is hung on beam bodies 6 on two sides of a closure section through hanging straps 8, a lower longitudinal beam 7 is arranged at the bottom to support the hanging straps 8, the hanging straps 8 penetrate through the lower longitudinal beam 7 and the beam bodies 6 on two sides of the closure section, two ends of the hanging straps are respectively tightened by anchor bolts 9, sleeves 10 are externally penetrated by the hanging straps 8 to be isolated from concrete, the diameter of each sleeve 10 is slightly larger than that of the hanging straps 1, the weighing module 2 is arranged between the lower parts of the anchor bolts 9 and the upper parts of the lower longitudinal beams 7, and a central controller reads stable initial weighing; the weighing module 2 is an axial force type sensor, the weighing module 2 is a part of a sling 8 and bears load together, the weighing module 2 is connected with the central controller through a connecting wire 11, and the connecting wire 11 of the weighing module 2 positioned in the inner box extends out of the bridge deck through a sleeve 10 and is connected with the central controller; the weighing module 2 is reserved with a wiring port 19, and data are transmitted to the central controller through a connecting wire 11; the scale of the weighing module 2 should be greater than the total balance weight load/boom count.
(2) The weight load of the near end and the far end in the initial state is determined by construction balance design, two groups of beam bodies 6 on two sides of the closure section are symmetrically arranged in the weight system, each group of weight system comprises a water tank 3 and a water pump 4, the upper part of the water tank 3 is provided with a water inlet valve 12, the lower part of the water tank is provided with a water outlet valve 13, the pipe diameters of the water inlet valve 12 and the water outlet valve 13 are the same, the water inlet valve 12 and the water outlet valve 13 are matched with a water inlet end 14 and a water outlet end 15 of the water pump 4, and the water pump 4 controls the water outlet quantity and the water outlet flow rate by a quantitative switch 16; when the water tank 3 is filled with water and is balanced, the water inlet valve 12 is connected with the water outlet end 15 of the water pump 4, the water inlet end 14 of the water pump 4 is provided with a water inlet pipe for collecting water from a water source, a central controller sends out a quantitative water adding instruction after the balance weight load is converted into water quantity, the water tank 3 is filled with water and is balanced through the water pump 4, and a quantitative switch 16 automatically closes the water inlet valve after the water tank 3 reaches the preset water quantity, so that the balance weight application is completed.
(3) After closure locking, casting concrete at the lowest temperature of the same day is selected, casting concrete between two side beam bodies 6 of the closure section through pump pipes 17, an electromagnetic flowmeter 18 is arranged between two sections of pump pipes 17 close to a discharge hole, pipe diameters of two ends of the electromagnetic flowmeter 18 are matched with the pump pipes 17, and a wiring port 19 is reserved; the central controller comprises a wiring port 19, a display 20 and a controller 21, one end of a connecting wire 11 is connected with the wiring port 19 of the central controller, and the other end of the connecting wire is respectively connected with the weighing module 2, the electromagnetic flowmeter 18 and the quantitative switch 16; the weighing module 2 transmits data to the central controller in real time during pouring, the controller 21 converts the weight increment of concrete into the water quantity decrement of the water tank 3, synchronously transmits signals to the counterweight system quantitative switch 16, when the weight of water in the water tank 3 is reduced, the water outlet valve 13 is connected with the water inlet end 14 of the water pump 4, and the pumped water is discharged along the water inlet pipe through the water outlet end 15 of the water pump 13, so that real-time equal-quality water discharge is finally realized. The reading of the electromagnetic flowmeter 18 of the pump pipe 17 is used as a concrete weight reference, so that accurate reading is ensured.
(4) And (5) pouring the closure section.
Example 3
The construction of the cast-in-situ continuous beam bridge closure section counterweight can be completed through the following steps:
(1) And the beam bodies at two sides of the closure section are provided with an intelligent water tank counterweight system of the closure section, and the intelligent water tank counterweight system comprises a hanging bracket 1, a counterweight module and a central controller. The hanging bracket 1 directly adopts a bottom basket and a template system of a construction hanging basket, the hanging bracket 1 is hung on beam bodies 6 on two sides of a closure section through hanging straps 8, a lower longitudinal beam 7 is arranged at the bottom to support the hanging straps 8, the hanging straps 8 penetrate through the lower longitudinal beam 7 and the beam bodies 6 on two sides of the closure section, two ends of the hanging straps are respectively tightened by anchor bolts 9, a sleeve 10 is penetrated outside the hanging straps 8 to be isolated from concrete, and the diameter of the sleeve 10 is slightly larger than that of the hanging straps 1.
(2) The weight load of the near end and the far end in the initial state is determined by construction balance design, two groups of beam bodies 6 on two sides of the closure section are symmetrically arranged in the weight system, each group of weight system comprises a water tank 3 and a water pump 4, the upper part of the water tank 3 is provided with a water inlet valve 12, the lower part of the water tank is provided with a water outlet valve 13, the pipe diameters of the water inlet valve 12 and the water outlet valve 13 are the same, the water inlet valve 12 and the water outlet valve 13 are matched with a water inlet end 14 and a water outlet end 15 of the water pump 4, and the water pump 4 controls the water outlet quantity and the water outlet flow rate by a quantitative switch 16; when the water tank 3 is filled with water and is balanced, the water inlet valve 12 is connected with the water outlet end 15 of the water pump 4, the water inlet end 14 of the water pump 4 is provided with a water inlet pipe for collecting water from a water source, a central controller sends out a quantitative water adding instruction after the balance weight load is converted into water quantity, the water tank 3 is filled with water and is balanced through the water pump 4, and a quantitative switch 16 automatically closes the water inlet valve after the water tank 3 reaches the preset water quantity, so that the balance weight application is completed.
(3) After closure locking, casting concrete at the lowest temperature of the same day is selected, casting concrete between two side beam bodies 6 of the closure section through pump pipes 17, an electromagnetic flowmeter 18 is arranged between two sections of pump pipes 17 close to a discharge hole, pipe diameters of two ends of the electromagnetic flowmeter 18 are matched with the pump pipes 17, and a wiring port 19 is reserved; the electromagnetic flowmeter 18 of the pump pipe 17 is connected with the central controller through a connecting wire 11, and the concrete pouring amount is read in real time; the central controller comprises a wiring port 19, a display 20 and a controller 21, one end of a connecting wire 11 is connected with the wiring port 19 of the central controller, and the other end of the connecting wire is respectively connected with the weighing module 2, the electromagnetic flowmeter 18 and the quantitative switch 16; the weighing module 2 transmits data to the central controller in real time during pouring, the controller 21 converts the increment of the concrete square quantity into the decrement of the water quantity of the water tank 3, synchronously transmits signals to the counterweight system quantitative switch 16, when the water tank 3 is discharged and the weight is reduced, the water outlet valve 13 is connected with the water inlet end 14 of the water pump 4, and the pumped water is discharged along the water inlet pipe through the water outlet end 15 of the water pump 13, so that real-time equal-quality water discharge is finally realized.
(4) And (5) pouring the closure section.
The above description is not intended to limit the present application to the particular embodiments disclosed, but is not intended to limit the scope of the present application to such alternatives, modifications, additions and substitutions as would be apparent to those skilled in the art within the spirit and scope of the present application.
Claims (3)
1. A cast-in-situ continuous beam bridge closure section intelligent counterweight construction method is characterized in that: the construction steps of the intelligent counterweight are as follows:
(1) The beam bodies at two sides of the closure section are provided with closure section intelligent water tank counterweight systems; the intelligent water tank counterweight system comprises a hanging bracket (1), a weighing module (2), a counterweight module and a central controller, wherein the hanging bracket (1) is hung at the bottoms of two side beam bodies (6) of the closure section through hanging straps (8), and a side sill (7) is arranged at the bottom of the hanging bracket (1) in a supporting manner; the hanging strip (8) penetrates through the lower longitudinal beam (7) and the two side beam bodies (6) of the closure section, an anchor bolt (9) is tightened on the hanging strip (8) on the bottom surface of the lower longitudinal beam (7) and the top surface of the two side beam bodies (6) of the closure section, and a sleeve (10) for isolating from concrete is sleeved on the hanging strip (8); the weighing module (2) is arranged between the anchor bolt (9) and the leveling device (5), and the top surface and the bottom surface of the leveling device (5) are respectively clung to the bottom of the weighing module (2) and the tops of the two side beam bodies (6) of the closure section; two groups of counterweight modules are symmetrically arranged on the top surfaces of two side beam bodies (6) of the closure section, and each group of counterweight modules comprises a water tank (3) and a water pump (4) for injecting and discharging counterweight into the water tank (3); the central controller reads the weight information of the weighing module (2) and controls the water pump (4) to perform water filling and draining work, and the water pump (4) is provided with a quantitative switch (16) for controlling the water yield and the water outlet flow rate; the quantitative switch (16) is connected with the central controller through a connecting wire (11); the weighing module (2) is a pressure sensor, a wiring port (19) is reserved in the weighing module (2), the weighing module is connected with the central controller through a connecting wire (11), the weighing module (2) with data positioned in an inner box of a bridge is transmitted to the central controller through the connecting wire (11), and the connecting wire (11) penetrates through a sleeve (10) to extend out of a bridge deck to be connected with the central controller; the measuring range of the weighing module (2) is larger than the total balance weight load/boom quantity; the central controller comprises a wiring port (19), a display (20) and a controller (21), one end of a connecting wire (11) is connected with the wiring port (19) of the central controller, and the other end of the connecting wire is respectively connected with the weighing module (2); the middle part of the leveler (5) is provided with an opening, and the aperture is matched with the diameter of the hanging strip (8); the top surface of the leveler (5) is provided with a universal leveling bubble (22), and the bottom of the leveler is provided with a plurality of adjustable supporting legs (23) for fine leveling; the hanging bracket directly adopts a bottom basket and template system of a construction hanging basket, a weighing module is additionally arranged between a hanging bracket anchoring bolt and beam bodies at two sides of a closure section and is leveled, and a central controller reads stable initial weighing;
(2) The weight load of the near end and the far end in the initial state is determined by the construction balance design, after the weight load is converted into water quantity, a central controller sends out a quantitative water adding instruction, and after the water tank reaches the preset water quantity, a quantitative switch automatically closes a water inlet valve to finish weight application;
(3) After closure locking, the lowest temperature of the current day is selected to pour concrete, a weighing module transmits data to a central controller in real time during pouring, the central controller converts the weight increment of the concrete into the water quantity decrement of a water tank, and synchronously transmits signals to a quantitative switch of a counterweight system to discharge water in real time with equal mass; the two side beams (6) of the closure section are used for conveying casting concrete through pump pipes (17), an electromagnetic flowmeter (18) is arranged between the two sections of pump pipes (17) close to the discharge port, pipe diameters at two ends of the electromagnetic flowmeter (18) are matched with the pump pipes (17), a wiring port (19) is reserved, and the electromagnetic flowmeter (18) is connected with a central controller through a connecting wire (11); an electromagnetic flowmeter is arranged on the pump pipe, and the reading is used as a concrete weight reference, so that accurate reading is ensured;
(4) And (5) pouring the closure section.
2. The intelligent counterweight construction method for the closure section of the cast-in-situ continuous beam bridge according to claim 1, wherein the construction method comprises the following steps: the upper part of the water tank (3) is provided with a water inlet valve (12), the lower part is provided with a water outlet valve (13), and the water inlet valve (12) and the water outlet valve (13) have the same pipe diameter and are matched with a water inlet end (14) and a water outlet end (15) of the water pump (4).
3. The intelligent counterweight construction method for the closure section of the cast-in-situ continuous beam bridge according to claim 2, wherein the construction method comprises the following steps: when the water tank (3) is filled with water and is balanced, the water inlet valve (12) is connected with the water outlet end (15) of the water pump (4), the water inlet end (14) of the water pump (4) is connected with the water inlet pipe to collect water from a water source, when the water outlet is reduced in weight, the water outlet valve (13) is connected with the water inlet end (14) of the water pump (4), and the pumped water is discharged along the water inlet pipe through the water outlet end (15) of the water pump (4); the quantitative switch (16) is automatically turned off after the water inlet and outlet flow indicated by the central controller is reached.
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| CN202210491314.0A CN114808721B (en) | 2022-05-07 | 2022-05-07 | Intelligent counterweight construction method and system for closure section of cast-in-situ continuous beam bridge |
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| JP2000110114A (en) * | 1998-10-02 | 2000-04-18 | Ps Corp | Construction method for overhang-erected girder bridge using corrugated steel plate web and equipment for overhang erection work |
| CN110644378A (en) * | 2019-09-04 | 2020-01-03 | 中国一冶集团有限公司 | Automatic counterweight unloading adjusting system for closure segment construction and construction adjusting method thereof |
| CN111794125A (en) * | 2020-05-19 | 2020-10-20 | 陕西高速公路工程咨询有限公司 | Adjusting device and method for controlling height difference of closure section of curved bridge |
| CN112252192A (en) * | 2020-10-13 | 2021-01-22 | 江苏常凌交通工程有限公司 | Bridge cantilever closes up section and pours equipment |
| CN113832870A (en) * | 2021-08-31 | 2021-12-24 | 中交基础设施养护集团有限公司 | Construction method of rhombic hanging basket |
| CN215561994U (en) * | 2021-08-31 | 2022-01-18 | 中交基础设施养护集团有限公司 | A counter weight device for pre-compaction |
| CN215714638U (en) * | 2021-02-06 | 2022-02-01 | 中铁十二局集团第一工程有限公司 | Continuous beam counterweight system |
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2022
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|---|---|---|---|---|
| JP2000110114A (en) * | 1998-10-02 | 2000-04-18 | Ps Corp | Construction method for overhang-erected girder bridge using corrugated steel plate web and equipment for overhang erection work |
| CN110644378A (en) * | 2019-09-04 | 2020-01-03 | 中国一冶集团有限公司 | Automatic counterweight unloading adjusting system for closure segment construction and construction adjusting method thereof |
| CN111794125A (en) * | 2020-05-19 | 2020-10-20 | 陕西高速公路工程咨询有限公司 | Adjusting device and method for controlling height difference of closure section of curved bridge |
| CN112252192A (en) * | 2020-10-13 | 2021-01-22 | 江苏常凌交通工程有限公司 | Bridge cantilever closes up section and pours equipment |
| CN215714638U (en) * | 2021-02-06 | 2022-02-01 | 中铁十二局集团第一工程有限公司 | Continuous beam counterweight system |
| CN113832870A (en) * | 2021-08-31 | 2021-12-24 | 中交基础设施养护集团有限公司 | Construction method of rhombic hanging basket |
| CN215561994U (en) * | 2021-08-31 | 2022-01-18 | 中交基础设施养护集团有限公司 | A counter weight device for pre-compaction |
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| CN114808721A (en) | 2022-07-29 |
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