Construction method of foundation beam crossing underground pipeline

Abstract

The invention belongs to the technical field of building construction, and particularly relates to an underground pipeline crossing foundation beam construction method which comprises the following steps that firstly, multiple earthwork trapezoid drawing grooves are excavated on the two sides of an underground pipeline; secondly, anti-shear grooves are downwards excavated in the multiple earthwork trapezoid drawing grooves, and steel bar binding is conducted in the anti-shear grooves; thirdly, the lifting machine lifts the vertical steel beam into the shear-resistant groove through a lifting device, and the vertical steel beam is supported through an anti-overturning piece; fourthly, the transverse steel beams continue to be lifted to the position between every two adjacent vertical steel beams to be fixed, and reinforcement cages are placed on the peripheries of the vertical steel beams; fifthly, a formwork is erected in the earthwork trapezoid drawing groove, and concrete pouring is conducted; and sixthly, the anti-overturning piece is dismantled, earthwork backfilling is conducted on the earthwork trapezoid drawing groove, compared with the prior art, disturbance to the soil body around the underground pipeline is reduced, and safe and normal operation of the underground pipeline in the foundation beam construction process can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a construction method of a foundation beam spanning an underground pipeline. Background Art

[0002] At present, relocating underground pipelines or using ordinary concrete structural beams to cross pipelines is one of the commonly used construction methods for crossing underground structures. That is, simply relocating the underground pipelines that hinder the construction or excavating them and then tying steel bars for concrete pouring.

[0003] However, this construction method has the following problems: the overall relocation involves high costs; if ordinary concrete structural beams are used for spanning, the span of the underground structure that can be spanned is small, and the soil around the underground pipelines is disturbed; since the situation of the underground pipelines is unclear, it is easy to damage the underground pipelines, and the underground pipelines cannot operate normally during the construction process.

[0004] However, existing cranes directly lift the foundation beams, which may cause instability due to factors such as center of gravity shift. Summary of the invention

[0005] In view of the above problems, the present invention provides a construction method for a foundation beam spanning an underground pipeline.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: a construction method of a foundation beam across an underground pipeline, comprising the following steps: Step 1: Excavate multiple trapezoidal trenches on both sides of the underground pipeline; Step 2: dig shear grooves downward in multiple earthwork trapezoidal grooves, and tie steel bars in the shear grooves; Step 3: The crane lifts the vertical steel beam into the shear groove through the lifting device, and supports the vertical steel beam through the anti-overturning member; Step 4: Continue to lift the horizontal steel beam to fix it between two adjacent vertical steel beams, and lower the steel cage around the outer periphery of the vertical steel beam; Step 5: Set up formwork in the earthwork trapezoidal trench and pour concrete; Step 6: Remove the anti-overturning parts and backfill the trapezoidal trench with earth. Preferably, before excavating the trapezoidal trench for earthwork, a holographic underground detection instrument is used to scan and detect the excavation position, and anti-floating calculation is performed based on the detection results. BIM is used to simulate the anti-floating situation after excavation, and then the excavation method is determined based on the anti-floating calculation. The length of the trapezoidal trench for earthwork excavation is less than the length of the anti-floating calculation, so the middle section is excavated first, and then the two ends.

[0007] Preferably, the anti-tipping member is in an "eight" shape, and is made of I-beam, and is detachably connected to the vertical steel beam via an anchor plate.

[0008] Preferably, the lifting device includes a tripod and a flipping mechanism, a moving mechanism is installed above the tripod, a lifting ring is installed above the moving mechanism, the lifting ring cooperates with the crane, a driving motor 2 is installed below the flipping mechanism, a connecting plate is installed at the output end of the driving motor 2, and a clamping mechanism is installed below the connecting plate.

[0009] Preferably, the moving mechanism includes a guide rail and a servo motor, the guide rail is installed above the tripod, the servo motor is installed at the end of the guide rail, the output end of the servo motor is detachably connected to a ball screw, and the ball screw is equipped with a slider; the slider is slidably connected to the guide rail, a support is installed above the slider, and the lifting ring is installed on the side of the support.

[0010] Preferably, the flipping mechanism includes support member 2 and support member 3, and support member 2 and support member 3 are both installed at the bottom of the tripod, a rotating shaft passes through support member 2 and support member 3, a driving motor 1 is installed at the end of the rotating shaft, a flip plate is installed at the outer periphery of the rotating shaft, and the driving motor 2 is installed at the bottom of the flip plate; a groove 1 is opened above the flip plate, an electric push rod is installed in the groove 1, and a protrusion 1 is installed on the piston rod of the electric push rod; a groove 2 is opened below the tripod, and the protrusion 1 cooperates with the groove 2.

[0011] Preferably, the clamping mechanism includes a connecting piece and two guide rails 2, the connecting piece and the two guide rails 2 are installed below the connecting plate, and the connecting piece is located in the middle position of the two guide rails 2, one end of the two guide rails 2 are installed with a servo motor 2, the output end of the servo motor 2 is detachably connected with a ball screw 2, the ball screw 2 is matched with a slider 2, the slider 2 is slidably connected to the guide rail 2, and a clamping assembly is installed below the slider 2 and the connecting piece.

[0012] Preferably, the clamping assembly includes two support members four, and the two support members four are installed below the connecting member or the sliding block two, a bidirectional screw is passed through the two support members four, a driving motor three is installed at the end of the bidirectional screw, and two clamping members are matched on the upper part of the bidirectional screw; a slide groove one is opened below the connecting member and the sliding block two, and the upper parts of the two clamping members are located in the slide groove one.

[0013] Preferably, a laser rangefinder is installed on the side of the slider 2 away from the connecting piece.

[0014] Preferably, the moving mechanism is communicatively connected to the control system of the crane, and the second drive motor, the flipping mechanism and the clamping mechanism are all communicatively connected to the control system of the crane.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are: (1) Existing methods for relocating or crossing underground pipelines have many problems. The present invention, by performing trapezoidal trench excavation on both sides of the underground pipeline, significantly reduces the disturbance of the soil around the underground pipeline compared to large-area overall excavation, and can ensure the safety and normal operation of the underground pipeline during the foundation beam construction process.

[0016] (2) The excavation of the shear groove and subsequent construction steps are all carried out in the trapezoidal trench, which can limit the construction activities to a safe range away from the core area of ​​the underground pipeline, providing a reliable protective barrier for the underground pipeline; (3) Shear grooves are excavated in the trapezoidal grooves and steel bars are tied in the shear grooves. Vertical steel beams are placed in the shear grooves and supported by anti-overturning parts. Horizontal steel beams are connected and fixed to the vertical steel beams. Together with the steel cage on the periphery, a stable spatial structural system is formed, which enhances the overall shear resistance, bending resistance and bearing capacity of the foundation beam, enabling it to better adapt to complex stress environments and ensure the structural stability and safety of the foundation beam during use; (4) Existing hoists directly lift the foundation beam, while the present invention lifts the foundation beam by cooperating with the lifting device and the hoist. In addition, the present invention drives the ball screw 1 through a servo motor 1 to drive the slider to move accurately on the guide rail 1, so that the lifting ring can move to the optimal position to maintain the stability of the lifting; (5) The flipping mechanism uses a driving motor 1 to drive the rotating shaft to drive the flipping plate to rotate, and the electric push rod drives the protrusion 1 and the groove 2 to cooperate, which can realize the flipping of the flipping plate, so that the lifting device can adapt to the lifting requirements of different angles; (6) The clamping mechanism adopts the setting of two guide rails 2, and the servo motor 2 controls the position adjustment of the slide 2, which can adapt to the lifting requirements of foundation beams of different sizes; (7) The lifting device of the present invention uses a tripod as the main supporting body, and rationally integrates the moving mechanism, the turning mechanism and the clamping mechanism. The various mechanisms cooperate closely with each other and have a compact layout, which reduces the overall space occupied by the device and facilitates installation and use in various working environments. It is particularly suitable for places where space is limited but complex lifting operations are required. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following is a brief introduction to the drawings required for describing the embodiment: Figure 1 A flow chart of the construction method of the foundation beam across the underground pipeline provided in Example 1; Figure 2A front view of a hoisting device in the construction method of a foundation beam across an underground pipeline provided in Example 2; Figure 3 It is a schematic diagram of the hoisting device in the construction method of the foundation beam across the underground pipeline; Figure 4 It is a side view of the lifting device in the construction method of the foundation beam across the underground pipeline; Figure 5 This is the structural diagram of the lifting device in the construction method of the foundation beam across the underground pipeline.

[0018] Description of reference numerals: 1. Tripod; 2. Guide rail 1; 3. Slider 1; 4. Support part 1; 5. Lifting ring; 6. Servo motor 1; 7. Support part 2; 8. Support part 3; 9. Flip plate; 10. Drive motor 1; 11. Drive motor 2; 12. Connecting plate; 13. Guide rail 2; 14. Ball screw 2; 15. Servo motor 2; 16. Slider 2; 17. Connecting part; 18. Support part 4; 19. Clamping part; 20. Drive motor 3; 21. Bidirectional screw. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] Example 1 The following is combined with Figure 1 The present invention is further described as follows: a construction method for a foundation beam across an underground pipeline, such as Figure 1 As shown, the following steps are included: Step 1: Excavate multiple trapezoidal trenches on both sides of the underground pipeline; Step 2: dig shear grooves downward in multiple earthwork trapezoidal grooves, and tie steel bars in the shear grooves; Step 3: The crane lifts the vertical steel beam into the shear groove through the lifting device, and supports the vertical steel beam through the anti-overturning member; Step 4: Continue to lift the horizontal steel beam to fix it between two adjacent vertical steel beams, and lower the steel cage around the outer periphery of the vertical steel beam; Step 5: Set up formwork in the earthwork trapezoidal trench and pour concrete; Step 6: Remove the anti-overturning parts and backfill the trapezoidal trench with earth. In the present invention, before excavating the trapezoidal trench for earthwork, it is necessary to use a holographic underground detection instrument to scan and detect the excavation position, perform anti-floating calculation based on the detection results, use BIM to simulate the anti-floating situation after excavation, and then determine the excavation method based on the anti-floating calculation. The length of the trapezoidal trench for earthwork excavation is less than the length of the anti-floating calculation, so the middle section is excavated first, and then the two ends are excavated.

[0022] In the present invention, the anti-tipping member is in an "eight" shape, and the anti-tipping member adopts an I-beam, and the anti-tipping member is detachably connected to the vertical steel beam through an anchor plate.

[0023] In the present invention, the earthwork trapezoidal trench excavation adopts the slope excavation method.

[0024] In the present invention, the vertical steel beams are welded in sections by horizontal splicing.

[0025] Example 2 The main difference between this embodiment and embodiment 2 is: Figure 2-Figure 5 As shown, the lifting device includes a tripod 1 and a flipping mechanism, a moving mechanism is installed above the tripod 1, a lifting ring 5 is installed above the moving mechanism, the lifting ring 5 cooperates with the crane, a driving motor 11 is installed below the flipping mechanism, a connecting plate 12 is installed at the output end of the driving motor 11, and a clamping mechanism is installed below the connecting plate 12.

[0026] like Figure 2-Figure 4 As shown, the moving mechanism includes a guide rail 2 and a servo motor 6. The guide rail 2 is installed above the tripod 1, and the servo motor 6 is installed at the end of the guide rail 2. The output end of the servo motor 6 is detachably connected with a ball screw 1, and the ball screw 1 is equipped with a slider 3; the slider 3 is slidably connected to the guide rail 2, a support 4 is installed above the slider 3, and a lifting ring 5 is installed on the side of the support 4.

[0027] like Figure 2-Figure 4 As shown, the flip mechanism includes support member 2 7 and support member 3 8, and support member 2 7 and support member 3 8 are both installed at the bottom of the tripod 1. A rotating shaft runs through support member 2 7 and support member 3 8, a driving motor 10 is installed at the end of the rotating shaft, a flip plate 9 is installed at the periphery of the rotating shaft, and a driving motor 2 11 is installed at the bottom of the flip plate 9; a groove 1 is opened above the flip plate 9, an electric push rod is installed in the groove 1, and a protrusion 1 is installed on the piston rod of the electric push rod; a groove 2 is opened at the bottom of the tripod 1, and the protrusion 1 cooperates with the groove 2.

[0028] like Figure 2-Figure 4As shown, the clamping mechanism includes a connecting member 17 and two guide rails 13. The connecting member 17 and the two guide rails 13 are both installed below the connecting plate 12, and the connecting member 17 is located in the middle of the two guide rails 13. A servo motor 15 is installed at one end of the two guide rails 13. The output end of the servo motor 15 is detachably connected to a ball screw 14. The ball screw 14 is equipped with a slider 16. The slider 16 is slidably connected to the guide rail 13. A clamping assembly is installed below the slider 16 and the connecting member 17.

[0029] like Figure 2-Figure 4 As shown, the clamping assembly includes two support members four 18, and the two support members four 18 are installed below the connecting member 17 or the sliding block two 16. A bidirectional screw 21 passes through the two support members four 18, and a driving motor three 20 is installed at the end of the bidirectional screw 21. Two clamping members 19 are matched on the upper part of the bidirectional screw 21; a slide groove one is opened at the lower part of the connecting member 17 and the sliding block two 16, and the upper part of the two clamping members 19 is located in the slide groove one.

[0030] In the present invention, a counterweight block 1 is installed at the end of the guide rail 2 away from the servo motor 6, a groove 3 is opened on the side of the counterweight block 1 close to the ball screw 1, a bearing 1 is installed in the groove 3, and the end of the ball screw 1 is installed in the bearing 1.

[0031] In the present invention, a drive motor three 20 is installed on the side of one of the support members four 18, the output end of the drive motor three 20 is fixedly connected to the end of the bidirectional screw 21, and a counterweight block two is installed on the side of the other support member four 18, and a groove four is provided on the side of the counterweight block two close to the ball screw two 14, a bearing two is installed in the groove four, and the end of the ball screw two 14 is installed in the bearing two.

[0032] In the present invention, a laser rangefinder is installed on the side of the slider 2 16 away from the connecting member 17 .

[0033] In the present invention, the laser rangefinder is spaced a distance from the middle of the second slider 16 , and the laser rangefinder and the side surface of the second slider 16 are inclined at a certain angle.

[0034] In the present invention, the initial position of the lifting ring 5 is the middle position of the guide rail 2.

[0035] In the present invention, the moving mechanism is connected to the control system of the crane in communication, and the driving motor 11, the turning mechanism and the clamping mechanism are all connected to the control system of the crane in communication.

[0036] In the present invention, the servo motor 1 6, the drive motor 1 10, the electric push rod, the servo motor 2 15, the drive motor 3 20 and the laser rangefinder are all connected to the control system of the crane in communication.

[0037] In the present invention, the servo motor 1 6, the drive motor 1 10, the electric push rod, the servo motor 2 15, the drive motor 3 20 and the laser rangefinder are all electrically connected to the power supply system of the crane.

[0038] The working principle of this embodiment is as follows: before lifting, the hook of the crane needs to be detachably connected to the lifting ring 5, and then the crane drives the lifting ring 5 to move to the position of the vertical steel beam, and the servo motor 2 15 at one end of the guide rail 2 13 is started, driving the ball screw 2 14 to rotate, so that the slider 2 16 moves along the guide rail 2 13, and adjusts the distance between the two sliders 2 16 and the relative position between the slider 2 16 and the connecting piece 17 so that the clamping assembly can adapt to vertical steel beams of different lengths. After moving to the appropriate position, the crane continues to be lowered, and the drive motor 3 20 is turned on. The drive motor 3 20 drives the bidirectional screw 21 to rotate. Since the bidirectional screw 21 is equipped with two clamping members 19, and the upper parts of the two clamping members 19 are located in the slide groove 1 below the connecting piece 17 or the slider 2 16, the rotation of the bidirectional screw 21 will make the two clamping members 19 approach each other, thereby achieving the clamping of the vertical steel beam.

[0039] Turn on the laser rangefinder to measure the distance between the end of the vertical steel beam and the slider 2 16. Since the laser rangefinder transmits the value to the control system of the crane, turn off the laser rangefinder, and the control system of the crane calculates the optimal position of the lifting ring 5, turn on the servo motor 6, and the servo motor 6 drives the ball screw 1 to rotate. Since the slider 13 cooperates with the ball screw 1 and is slidably connected with the guide rail 12, under the rotation of the ball screw 1, the slider 3 moves along the guide rail 2, and the support 14 above the slider 3 and the lifting 5 on the side also move accordingly. After the lifting ring 5 moves to the optimal position, turn off the servo motor 6, and the crane lifts the vertical steel beam to above the earthwork trapezoidal groove.

[0040] Turn on the electric push rod, which drives protrusion 1 to descend until protrusion 1 is disengaged from groove 2, turn off the electric push rod, turn on drive motor 10, drive motor 10 drives flip plate 9 to rotate 90°, turn off drive motor 10, turn on drive motor 2 11, drive motor 2 11 drives connecting plate 12 to rotate, so that the vertical steel beam changes from horizontal direction to vertical direction, turn off drive motor 2 11, and the crane continues to lower the vertical steel beam into the shear groove.

[0041] In the present invention, when the horizontal steel beam needs to be lifted, the method is similar to that of lifting the vertical steel beam. When lifting the horizontal steel beam, the electric push rod does not need to drive the protrusion 1 to descend, and there is no need to turn on the drive motor 10 and the drive motor 2 11.

[0042] In the present invention, the lifting ring 5 moves along the guide rail 1 2 in order to adjust the center of gravity of the lifting and ensure the stability of the lifting. And the control system of the crane obtains the optimal position of the lifting ring 5 according to the value of the laser rangefinder: the distance between the laser rangefinder and the middle position of the slider 2 16, the angle between the laser rangefinder and the slider 2 16, and the distance between the ends of the vertical steel beam measured by the laser rangefinder. The distance from the slider 2 16 to the end of the vertical steel beam can be obtained by the cosine theorem, and the center of gravity of the vertical steel beam is obtained according to the distance between the two sliders 2 16 and the corresponding ends of the vertical steel beam, so that the lifting ring 5 is moved to this position.

[0043] The above lifting steps can be adjusted according to the on-site conditions.

[0044] As the technical solution of the present invention, the hardware setting provided is only for the convenience of realizing specific braking control based on the hardware facilities. How to realize braking control and braking control method specifically is not the technical problem to be solved by the present invention and the object of protection. At the same time, the communication method between the devices adopts the existing communication method, which is not the inventive point of the present invention.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A construction method for a foundation beam across an underground pipeline, characterized in that: The following steps are involved: Step 1: Excavate multiple trapezoidal trenches on both sides of the underground pipeline; Step 2: dig shear grooves downward in multiple earthwork trapezoidal grooves, and tie steel bars in the shear grooves; Step 3: The crane lifts the vertical steel beam into the shear groove through the lifting device, and supports the vertical steel beam through the anti-overturning member; Step 4: Continue to lift the horizontal steel beam to fix it between two adjacent vertical steel beams, and lower the steel cage around the outer periphery of the vertical steel beam; Step 5: Set up formwork in the earthwork trapezoidal trench and pour concrete; Step 6: Remove the anti-overturning parts and backfill the trapezoidal trench with earth.

2. The construction method of the foundation beam across underground pipelines according to claim 1 is characterized in that: Before excavating the trapezoidal trench for earthwork, it is necessary to use a holographic underground detection instrument to scan and detect the excavation position, perform anti-floating calculations based on the detection results, use BIM to simulate the anti-floating situation after excavation, and then determine the excavation method based on the anti-floating calculation. The length of the trapezoidal trench for earthwork excavation is less than the length of the anti-floating calculation, so the middle section should be excavated first, and then the two ends.

3. The construction method of the foundation beam across underground pipelines according to claim 1 is characterized in that: The anti-tipping member is in an "eight" shape and is made of I-beam. The anti-tipping member is detachably connected to the vertical steel beam through an anchor plate.

4. The construction method of the foundation beam across underground pipelines according to claim 3 is characterized in that: The lifting device comprises a tripod (1) and a turning mechanism, a moving mechanism is installed above the tripod (1), a lifting ring (5) is installed above the moving mechanism, the lifting ring (5) cooperates with the hoist, a second driving motor (11) is installed below the turning mechanism, a connecting plate (12) is installed at the output end of the second driving motor (11), and a clamping mechanism is installed below the connecting plate (12).

5. The construction method of the foundation beam across underground pipelines according to claim 4 is characterized in that: The moving mechanism comprises a guide rail (2) and a servo motor (6), wherein the guide rail (2) is mounted above the tripod (1), and the servo motor (6) is mounted at the end of the guide rail (2). The output end of the servo motor (6) is detachably connected to a ball screw (1), and the ball screw (1) is matched with a slider (3). The slider one (3) is slidably connected to the guide rail one (2); a support member one (4) is installed above the slider one (3); and the lifting ring (5) is installed on the side of the support member one (4).

6. The construction method of the foundation beam across underground pipelines according to claim 5 is characterized in that: The flip mechanism comprises a second support member (7) and a third support member (8), wherein the second support member (7) and the third support member (8) are both mounted below the tripod (1), a rotating shaft passes through the second support member (7) and the third support member (8), a driving motor (10) is mounted on the end of the rotating shaft, a flip plate (9) is mounted on the outer periphery of the rotating shaft, and the second driving motor (11) is mounted below the flip plate (9); A groove 1 is provided above the flip plate (9), an electric push rod is installed in the groove 1, a piston rod of the electric push rod is installed with a protrusion 1, and a groove 2 is provided below the tripod (1), the protrusion 1 cooperates with the groove 2.

7. The construction method of the foundation beam across the underground pipeline according to claim 6 is characterized in that: The clamping mechanism comprises a connecting piece (17) and two guide rails (13). The connecting piece (17) and the two guide rails (13) are both mounted below the connecting plate (12), and the connecting piece (17) is located in the middle of the two guide rails (13). A servo motor (15) is mounted at one end of the two guide rails (13). The output end of the servo motor (15) is detachably connected to a ball screw (14). The ball screw (14) is matched with a slider (16). The slider (16) is slidably connected to the guide rail (13). A clamping assembly is mounted below the slider (16) and the connecting piece (17).

8. The construction method of the foundation beam across underground pipelines according to claim 7 is characterized in that: The clamping assembly comprises two support members four (18), the two support members four (18) are both installed below the connecting member (17) or the sliding block two (16), a bidirectional screw rod (21) passes through the two support members four (18), a driving motor three (20) is installed at the end of the bidirectional screw rod (21), and two clamping members (19) are matched on the upper part of the bidirectional screw rod (21); A slide groove 1 is provided below the connecting member (17) and the sliding block 2 (16), and the tops of the two clamping members (19) are located in the slide groove 1.

9. The construction method of the foundation beam across underground pipelines according to claim 8, characterized in that: A laser rangefinder is installed on the side of the second sliding block (16) away from the connecting piece (17).

10. The construction method of foundation beam across underground pipelines according to claim 4, characterized in that: The moving mechanism is connected to the control system of the crane in communication, and the second drive motor (11), the turning mechanism and the clamping mechanism are all connected to the control system of the crane in communication.

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