Plugging device for pavement paving and rail bridge construction and construction method

Abstract

The plugging device for pavement paving and track bridge construction comprises a loading barrel, an air bag, an inflation inlet and a hoisting assembly, and the loading barrel is used for receiving sundries falling from a pavement wellhead or a pipe pile pipe opening in the pavement paving or track bridge construction process; the air bag covers the loading barrel; the inflation inlet is used for inflating the air bag; the hoisting assembly is connected with the loading barrel and used for fixing the loading barrel in a road surface wellhead or a pipe pile. The invention further discloses a construction method of the rail bridge. The construction method comprises the steps that S1, the pipe piles are plugged through the plugging device for road surface pavement and rail bridge construction; s2, the pipe pile is driven into the road surface to reach the designed elevation; s3, deflating the air bag, and lifting away the air bag; and finally, concrete in the pipe pile pipe is recharged. And a cement component used for rail traffic road surface facilities is poured at the upper end of the pipe pile. Impurities and dirt can be prevented from falling in the construction process, pipe holes of the pipe piles are effectively blocked, and high-quality construction of rail transit is assisted.

Description

Technical Field

[0001] The present application relates to the field of rail transit interchange or soft soil foundation construction, and specifically to a blocking device and a construction method for road paving and rail bridge construction. Background Art

[0002] Pile foundation is an important foundation form in civil engineering, transportation engineering, water conservancy engineering and other industries. Among them, pipe piles are widely used due to their controllable production quality, high quality and environmental friendliness. Especially in the context of the existing large-scale urban rail transit construction, a large number of elevated stations and rail lines are under construction, which requires a large number of pre-piped piles as the bearing foundation.

[0003] In the production process of pipe piles, the centrifugal force generated by the rotation of the centrifuge is often used to vibrate and compact the concrete used to prepare the pipe piles, thereby improving the quality of the pipe piles. Under such a process, the middle of the pipe pile cannot be filled with concrete, and it is in a hollow state. Due to the moment of inertia formula, the bending resistance of the pipe pile is reduced in the hollow state, but it also reduces the weight of the pipe pile, making it easier to transport and hoist. Therefore, in the project, after the pipe piles are completed, concrete needs to be poured back into the hollow part of the pipe pile to enhance the bending and load-bearing resistance of the piles.

[0004] When the piles are driven into the soft soil foundation, there are often impurities on the road surface of the construction site, such as soil, stones, plant residues, etc. When the piles are driven down through the road surface, the impurities on the road surface may be disturbed and fall due to vibration and impact. Especially in soft soil foundations, the soil has strong fluidity, and impurities are more likely to enter the pipe mouth of the piles, which will not only affect the internal cleanliness of the piles, but may also cause quality problems during the subsequent concrete pouring.

[0005] During the construction of rail transit viaduct columns, when the pipe piles are driven through the road surface, impurities such as soil, stones and other residues on the surrounding road surface may be disturbed and fall due to vibration and impact, which is called pipe internal pollution. After the construction of the pipe piles is completed, these impurities will easily affect the cleanliness of the inside of the pipe piles, especially when the pipe piles are connected to the cement support of the viaduct. They will also have an adverse effect on the subsequent concrete pouring and structural stability. After the piles are completed, if the debris is not cleaned up, the service performance of the pipe piles will be affected.

[0006] Therefore, in actual projects, it is required to clean up the debris in the pipe before refilling the concrete. There are two ways to solve the problem of debris in the pipe pile: one is to clean the pipe, and the other is to prevent dirt from falling into the pipe.

[0007] The usual practice in engineering is to use a high-pressure water gun to clean the inside of the pipe after the pile is formed to achieve the purpose of cleaning the debris inside the pipe. However, the pile body after the pile is completed is generally 8m to 40m, and the space inside the pipe is very narrow, so the high-pressure water gun cleaning method is often ineffective. This method also wastes a lot of water and produces a lot of mud, which is not environmentally friendly.

[0008] The publication number is CN106592595A, which discloses a PHC pipe pile hole plugging method with an air bag, in particular, a method for supplementing and improving the PHC pipe pile hole plugging method, and the specific steps are: first, putting an air bag into the hole of the pipe pile, and then using an air pump to inject air into the air bag to expand the air bag and fit tightly with the pipe wall of the pipe pile, thereby plugging the pipe hole of the pipe pile and preventing water and soil from flowing into the pipe hole of the pipe pile; before filling the core with concrete, deflate and recover the air bag.

[0009] In the prior art, the air bag plugging method for the PHC pile hole is slow in inflation speed and takes a long time when the air bag is inflated, and deflated quickly, so that debris, mud, cement slurry and other debris may fall from both sides of the air bag into the pile, which may easily lead to the need for additional cleaning work in the subsequent construction process, increase the complexity and time cost of the construction, and result in low plugging efficiency.

[0010] Therefore, the construction method used in the prior art to prevent dirt from falling into pipes has further room for improvement. Summary of the invention

[0011] The purpose of the present application is to provide a blocking device and construction method for road paving and rail bridge construction, so as to solve the problem in the background technology that when the airbag is deflated, debris will fall into the inside of the pipe pile from both sides of the airbag, resulting in poor blocking efficiency and difficulty in cleaning.

[0012] To achieve the above-mentioned purpose, the present application provides a blocking device for road paving and rail bridge construction, comprising: A loading bucket, which is used to receive debris dropped from a road surface wellhead or a pipe pile mouth during road paving or rail bridge construction; An air bag, the air bag is wrapped around the loading bucket; An inflation port, the inflation port being used to inflate the airbag; A hoisting assembly is connected to the loading bucket, and the hoisting assembly is used to fix the loading bucket in a road surface wellhead or a pipe pile.

[0013] Compared with the prior art, the plugging device for road paving and rail bridge construction of the present application cooperates with an airbag and a loading bucket. When the airbag expands, it can fit tightly against the inner wall of the pipe pile. The whole process ensures that no debris on the road falls into the pipe pile during the pipe pile construction, effectively blocks the pipe hole of the pipe pile, and prevents debris and dirt from falling into the pipe pile during the construction process, thereby keeping the inside of the pipe pile clean. It can adapt to pipe piles of different diameters and lengths, has good versatility, and can meet a variety of construction requirements. Among them, the hoisting assembly can fix the plugging device in the pipe pile, and the loading bucket can receive the debris falling from the pipe mouth of the pipe pile to avoid the direct impact of the debris on the airbag. While reducing costs, it also greatly improves the on-site engineering efficiency, and also reduces the environmental pollution caused by cleaning the debris in the pipe pile, which helps green and low-carbon construction and helps the high-quality construction of rail transit.

[0014] Preferably, the blocking device further comprises an air release port and at least two handles, wherein the air release port is used to deflate the airbag; The two handles are connected to the lifting assembly, the handles are fixedly mounted on the loading bucket, and the two handles are symmetrically arranged along the center line of the loading bucket; The inflation port is arranged on the loading bucket or the air bag; The air release port is arranged on the loading bucket or the air bag.

[0015] In this embodiment, by providing an air release port and a handle, it is convenient for the operator to control the inflation and deflation processes. The inflation port can be provided on the loading bucket or on the airbag, which increases the flexibility of the design and improves the convenience of construction.

[0016] Preferably, the blocking device further comprises a deflation member and a pull rope, wherein the deflation member is connected to the pull rope, and the deflation member is pulled by the pull rope to achieve deflation of the airbag; The air release member is configured as an air release plug; or, The air release member is configured as an air release valve; The deflation member is used for deflation or sealing of the deflation port.

[0017] In this embodiment, the deflation piece is connected by a pull rope, and the operator can easily pull the pull rope to control the opening and closing of the deflation piece. The operator does not need to directly touch the deflation piece to achieve rapid deflation of the airbag, which reduces the complexity and potential risks of the operation and improves practical efficiency.

[0018] Preferably, the inner wall of the airbag is connected to the outer wall of the loading bucket, the highest point of the airbag is higher than the highest point of the loading bucket, and there is an arc-shaped transition between the inner side wall of the airbag and the inner side of its bottom; Wherein, the top of the airbag is at least partially connected to the inner wall of the loading bucket; or, The top of the air bag is at least partially connected to the outer wall of the loading bucket.

[0019] In this embodiment, the highest point of the airbag is higher than the highest point of the loading bucket to ensure that impurities can smoothly enter the loading bucket during use and avoid falling into the gap between the airbag and the loading bucket, thereby reducing the difficulty of cleaning.

[0020] Preferably, the blocking device further comprises a fixing member, and the end of the loading bucket is connected to the airbag via the fixing member; A sealing ring is provided between the fixing member and the airbag, and there are multiple fixing members, and a single fixing member corresponds to a single sealing ring.

[0021] In this embodiment, a sealing ring is provided between the fixing member and the airbag, which can effectively prevent gas leakage and ensure that the airbag remains in a well-sealed state during inflation and use, thereby improving overall safety.

[0022] Preferably, a limiting member is provided between the bottom of the loading bucket and the airbag, the limiting member is located in the middle of the loading bucket, and the limiting member is used to fix the position of the airbag.

[0023] In this embodiment, a limiter is provided to fix the position of the airbag to prevent the airbag from sinking during inflation, thereby ensuring that the gas can be evenly dispersed to both sides of the airbag, thereby improving the stability of the airbag.

[0024] The present application also provides a construction method for a track bridge, comprising the following steps: Step S1: blocking the pipe pile with the above-mentioned blocking device for road paving and rail bridge construction; Step S2: driving the pipe piles into the road surface to the designed elevation; Step S3: Deflate the airbag and lift it away; finally, refill the concrete in the pipe pile; and then pour cement components for rail transit pavement facilities on the upper end of the pipe pile.

[0025] Compared with the prior art, the construction method of a rail bridge of the present application can effectively prevent soil, debris or water from falling into the pipe pile during rail transit construction by using a blocking device to block the pipe pile, thereby ensuring the structural integrity of the pipe pile. In addition, by providing an airbag, the airbag can be fully expanded and pressed against the inner wall of the pipe pile, thereby ensuring the sealing of the airbag and providing a good foundation for subsequent construction. Operators can quickly and conveniently operate the inflation and deflation of the airbag, thereby improving the efficiency of construction, reducing construction time, reducing costs and increasing efficiency, and improving the quality of pipe pile construction, thereby ensuring the service performance of the pipe pile.

[0026] In the construction method of the track bridge provided in the embodiment of the present application, after step S1 and before step S2, the following is specifically included: Lift the plugging device to the position below the pipe opening of the pipe pile; Before the pipe pile is driven into the road surface, the vent is blocked with a venting piece, the lifting assembly is tied to the handle, the pull rope is tied to the venting piece, and air is inflated into the airbag through the inflation port to expand the airbag and press the inner wall of the pipe pile.

[0027] In the construction method of the track bridge provided in the embodiment of the present application, after step S2 and before step S3, the following is specifically included: Pass the lifting assembly and the pull rope through the next section of the pile pipe; lift the next section of the pile and fix it with the previous section of the pile; Deflate the airbag and lift it to the position below the mouth of the next section of the pipe pile; repeat the above steps until the last section of the pipe pile is driven into the road surface.

[0028] The present application also provides a road paving construction method, comprising the following steps: Step S1: sealing the road surface wellhead with the above-mentioned sealing device for road surface paving and rail bridge construction; Step S2: leveling or paving the road surface until the entire road surface is paved; Step S3: Deflate the airbag and lift it away; Step S4: installing auxiliary devices on the road surface wellhead.

[0029] Compared with the prior art, the road paving construction method of the present application can effectively prevent soil, debris or water from falling into the road surface wellhead during the construction process by blocking the road surface wellhead, ensuring the smooth progress of the paving work, thereby improving the overall construction efficiency. In the process of paving or leveling the road surface, it is not necessary to block the road surface wellhead with a manhole cover or other auxiliary devices. The blocking device can protect the road surface wellhead conveniently and quickly, and after the road surface paving is completed, the blocking device can be easily lifted away, and the inside of the road surface wellhead remains clean without the need for additional cleaning, thereby reducing construction time and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a structural schematic diagram of a blocking device in the structure of a blocking device and a construction method for road paving and rail bridge construction provided in one embodiment of the present application; Figure 2 The construction sequence of the blocking device and construction method for road paving and rail bridge construction provided in one embodiment of the present application is Figure 1 ; Figure 3 The construction sequence of the blocking device and construction method for road paving and rail bridge construction provided in one embodiment of the present application is Figure 2 ; Figure 4 The construction sequence of the blocking device and construction method for road paving and rail bridge construction provided in one embodiment of the present application is Figure 3 ; Figure 5 The construction sequence of the blocking device and construction method for road paving and rail bridge construction provided in one embodiment of the present application is Figure 4 ; Figure 6 The construction sequence of the blocking device and construction method for road paving and rail bridge construction provided in one embodiment of the present application is Figure 5 ; Figure 7 The construction sequence of the blocking device and construction method for road paving and rail bridge construction provided in one embodiment of the present application is Figure 6 ; Figure 8 The construction sequence of the blocking device and construction method for road paving and rail bridge construction provided in one embodiment of the present application is Figure 7 ; Fig. 9 The construction sequence of the blocking device and construction method for road paving and rail bridge construction provided in one embodiment of the present application is Figure 8 ; Fig.10 It is a schematic diagram of a pipe pile backfill concrete structure of a plugging device and a construction method for road paving and rail bridge construction provided in one embodiment of the present application; Fig.11 For the elevated urban rail stations constructed using this application; Fig.12 For the elevated urban rail lines constructed using this application; Fig.13 It is a structural schematic diagram of a blocking device and a construction method for road paving and rail bridge construction provided in one embodiment of the present application.

[0031] Reference numerals: 1. Pipe piles; 2. Sealing device; 3. Completed piles; 4. Elevated station; 5. Elevated route; 21. Loading bucket; 22. Air bag; 23. Inflation port; 24. Lifting assembly; 25. Air release port; 26. Deflation part; 27. Draw rope; 28. Fixing part; 29. ​​Limiting part; 211. Handle; 261. Perforation. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is described in detail, clearly and completely in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure.

[0033] In the description of this application, if there is a description of first or second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] Those skilled in the art should understand that, in the disclosure of the present application, the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present application.

[0035] The present application is further described in detail below in conjunction with the accompanying drawings. Figures 1 to 13 illustrate. Embodiment 1

[0036] This embodiment provides a blocking device and construction method for road paving and rail bridge construction, which is applied in the field of rail transit interchange or soft soil foundation construction technology. This embodiment is a pile foundation project for a station and track of an elevated section of a certain city rail, and pile foundation construction is required on the station and elevated line. Figures 1 to 12 As shown, the plugging device provided in this embodiment for road paving and rail bridge construction can be applied to pipe piles 1 of any pipe shape, and can even achieve plugging of variable cross-sections, with strong adaptability. Figures 1 to 12 As shown, it includes a loading bucket 21, an airbag 22, an inflation port 23 and a lifting component 24. The lifting component 24 is made of steel wire rope material, and the airbag 22 is made of flexible material. The loading bucket 21 is used to receive debris dropped from the road surface wellhead or the pipe mouth of the pipe pile 1 during road paving or rail bridge construction; the airbag 22 is outsourced to the loading bucket 21, and the inflation port 23 is used to inflate the airbag 22. The lifting component 24 is connected to the loading bucket 21, and the lifting component 24 is used to fix the loading bucket 21 in the road surface wellhead or the pipe pile 1.

[0037] In this embodiment, through the cooperation of the airbag 22 and the loading bucket 21, when the airbag 22 expands, the inflation speed is fast, and it can fit closely to the inner wall of the pipe pile 1. The whole process ensures that no debris falls into the pipe pile 1 during the construction of the road wellhead or the pipe pile 1, effectively blocks the pipe hole of the pipe pile 1, and prevents debris and dirt from falling into the pipe pile 1 during the construction process, thereby keeping the road wellhead or the inside of the pipe pile 1 clean, and can adapt to pipe piles 1 of different diameters and lengths, with good versatility, and can meet a variety of construction requirements. Among them, the hoisting assembly 24 can fix the plugging device 2 in the pipe pile 1, and the loading bucket 21 can receive the debris falling from the road wellhead or the pipe mouth of the pipe pile 1, avoiding the direct impact of the debris on the airbag 22, enhancing the stability and durability of the plugging device 2, while reducing costs, and greatly improving the on-site engineering efficiency, while also reducing the environmental pollution caused by cleaning the debris in the pipe pile 1, helping green and low-carbon construction, and helping the high-quality construction of rail transit.

[0038] Preferably, Figure 1 As shown, the blocking device 2 also includes an air vent 25 and at least two handles 211. The handles 211 can be made of rigid material, and the air vent 25 is used to deflate the airbag 22; the two handles 211 are both connected to the lifting assembly 24, and the handles 211 are fixedly mounted on the loading bucket 21. The two handles 211 are fixed to the inner wall of the loading bucket 21 by welding, and the two handles 211 are symmetrically arranged along the center line of the loading bucket 21. The two handles 211 are respectively located on one side of the air vent 25 away from the bottom of the loading bucket 21, the inflation port 23 is arranged on the loading bucket 21, and the air vent 25 is arranged on the loading bucket 21.

[0039] It should be noted that the inflation port 23 can also be set on the airbag 22, and the deflation port 25 can also be set on the airbag 22; or, the inflation port 23 can also be set on the loading bucket 21, and the deflation port 25 can also be set on the airbag 22; or, the inflation port 23 can also be set on the airbag 22, and the deflation port 25 can also be set on the loading bucket 21.

[0040] In this embodiment, through the cooperation of the two handles 211 and the hoisting assembly 24, the staff can pull the plugging device 2 by pulling the hoisting assembly 24, which is convenient for the staff to operate. Among them, by providing the air release port 25 and the handle 211, it is convenient for the operator to control during the inflation and deflation process. The inflation port 23 can be provided on the loading bucket 21 or the air bag 22, which increases the flexibility of the design and improves the convenience of construction.

[0041] Preferably, Figure 1As shown, the blocking device 2 also includes a deflation member 26 and a pull rope 27. The pull rope 27 is made of a steel wire rope material. The deflation member 26 is connected to the pull rope 27. The deflation member 26 is arranged at one end of the deflation port 25 away from the handle 211. The deflation member 26 is pulled by the pull rope 27 to achieve deflation of the airbag 22. The deflation member 26 is set as a deflation plug. The deflation member 26 is used to deflate or block the deflation port 25. Among them, the deflation member 26 is provided with a through hole 261 for the pull rope 27 to pass through. The pull rope 27 is connected to the deflation member 26 through the through hole 261, so that the pull rope 27 can be smoothly pulled when the staff operates, thereby improving work efficiency.

[0042] In this embodiment, the deflation piece 26 is connected by a pull rope 27, and the operator can easily pull the pull rope 27 to control the opening and closing of the deflation piece 26. The operator does not need to directly touch the deflation piece 26 to achieve rapid deflation of the airbag 22, which reduces the complexity and potential risks of the operation and improves practical efficiency.

[0043] Preferably, Figure 1 As shown, the loading bucket 21 is a columnar structure, the inner wall of the airbag 22 is connected to the outer wall of the loading bucket 21, the inner wall of the airbag 22 is bonded to the outer wall of the loading bucket 21 by glue, the airbag 22 is symmetrically arranged along the center line of the loading bucket 21, the highest point of the airbag 22 is higher than the highest point of the loading bucket 21, and the size of the loading bucket 21 is smaller than the size of the airbag 22. There is an arc transition between the inner side wall of the airbag 22 and the inner side of its bottom; wherein, at least part of the top of the airbag 22 is connected to the inner wall of the loading bucket 21; or at least part of the top of the airbag 22 is connected to the outer wall of the loading bucket 21.

[0044] In this embodiment, the highest point of the airbag 22 is higher than the highest point of the loading bucket 21, so as to ensure that impurities can smoothly enter the loading bucket 21 during use, and avoid falling into the gap between the airbag 22 and the loading bucket 21, thereby reducing the difficulty of cleaning. The inner wall of the airbag 22 is bonded to the outer wall of the loading bucket 21 by glue, which can enhance the connection strength between the airbag 22 and the loading bucket 21 and improve the sealing effect. Among them, there is an arc transition between the right inner wall of the airbag 22 and the inner side of its bottom, an arc transition between the left inner wall of the airbag 22 and the inner side of its bottom, a right-angle transition between the right outer wall of the airbag 22 and the outer side of its bottom, and a right-angle transition between the left outer wall of the airbag 22 and the outer side of its bottom, so that the airbag 22 can fit closely to the inner wall of the pipe pile 1 after inflation, and can avoid the airbag 22 from becoming spherical after inflation, which is conducive to the gas flowing evenly to both sides when the airbag 22 is inflated, and ensures that it can withstand greater stress during use. The top of the airbag 22 is at least partially connected to the inner wall of the loading bucket 21, so as to avoid damage and air leakage at the connection between the airbag 22 and the loading bucket 21 after long-term use, thereby enhancing the stability of the airbag 22 and extending the use time.

[0045] It should be noted that at least a portion of the top of the airbag 22 may also be connected to the outer wall of the loading bucket 21 , thereby increasing the service life of the airbag 22 .

[0046] Preferably, Figure 1 As shown, the blocking device 2 also includes a fixing part 28, which is configured as a rivet. The end of the loading bucket 21 is connected to the airbag 22 via the fixing part 28. A plurality of sealing rings are provided between the fixing part 28 and the airbag 22. There are a plurality of fixing parts 28, and the plurality of fixing parts 28 are arranged at intervals. A single fixing part 28 corresponds to a single sealing ring.

[0047] In addition, the fixing member 28 may also be other devices with a fixing connection function and is not limited to the above embodiments, as long as it can achieve fixing.

[0048] In this embodiment, a sealing ring is provided between the fixing member 28 and the airbag 22, which can effectively prevent gas leakage, ensure that the airbag 22 is kept in a good sealed state during inflation and use, and improve overall safety. A single fixing member 28 corresponds to a single sealing ring, and when the sealing ring needs to be replaced, the operation is more convenient, and the maintenance personnel can quickly identify and replace the damaged sealing ring, reducing maintenance costs and time.

[0049] Refer to Fig.11 As shown, when it is an elevated urban rail station 4, a cement component for rail transit pavement facilities is poured between the completed pile 3 and the elevated station 4, referring to Fig.12 As shown, when it is an urban rail elevated line 5, cement components for rail transit pavement facilities are poured between the completed piles 3 and the elevated line 5.

[0050] The present application also provides a construction method for a track bridge, comprising the following steps: Step S1: The pipe pile 1 is blocked by the blocking device 2 for road paving and rail bridge construction; Step S2: driving the pipe pile 1 into the road surface to the designed elevation; Step S3: Deflate the airbag 22 and lift it away; finally, refill the concrete in the pipe pile 1; and then pour cement components for rail transit pavement facilities on the upper end of the pipe pile 1.

[0051] Reference Figures 2 to 4 As shown, after step S1 and before step S2, the method further includes: hoisting the plugging device 2 to the position below the pipe opening of the pipe pile 1; before the pipe pile 1 is driven into the road surface, plugging the air vent 25 with the air vent 26, tying the hoisting assembly 24 to the handle, tying the pull rope 27 to the air vent 26, and inflating the airbag 22 through the inflation port 23 to expand the airbag 22 and press the inner wall of the pipe pile 1.

[0052] In this embodiment, the pipe pile 1 can be a whole pipe pile. In order to prevent dirt from falling into the pipe pile 1, the blocking device 2 is first hoisted to 100 mm below the pipe mouth of the prefabricated steel pipe. Before the pipe pile 1 is driven into the road surface, the air vent 25 is blocked with an air vent 26. A 14m steel rope is used as a hoisting component 24 and a pull rope 27. The hoisting component 24 is tied to the two handles 211, and the pull rope 27 is tied to the threading hole. An air compressor is used to inflate the airbag 22 through the inflation port 23. The inflation pressure value range is 0.2MPa, so that the airbag 22 expands. The airbag 22 is expanded and pressed against the inner wall of the pipe pile 1 to seal the inner diameter of the pipe pile 1; secondly, the first section of the pipe pile 1 is driven into the road surface to the designed elevation, and the deflation piece 26 is pulled out by pulling the rope 27, and the gas flows out from the deflation port 25, so that the pressure of the airbag 22 is reduced, and the friction between the airbag 22 and the inner wall of the pipe pile 1 is reduced until the two are separated, so that the airbag 22 can move in the pipe pile 1 without obstruction, and the airbag 22 is lifted away, and finally the pipe pile 1 is filled with C35 concrete for recharging, which is convenient to operate, has high construction efficiency and low cost.

[0053] Reference Figures 5 to 12 As shown, after step S2 and before step S3, the method further includes: Pass the hoisting assembly 24 and the pull rope 27 into the next section of the pile; hoist the next section of the pile and fix it with the previous section of the pile; deflate the airbag 22 and lift it to the position below the mouth of the next section of the pile; repeat steps S2 to S3 until the last section of the pile is driven into the road surface.

[0054] In this embodiment, the pipe pile 1 can be formed by splicing multiple sections of pipe piles, and two adjacent pipe piles 1 are welded to meet the needs of different pile lengths. If the number of pipe piles 1 is two sections, from bottom to top, they are the first section of pipe pile and the second section of pipe pile. After the first section of pipe pile is driven into the road surface, the lifting assembly 24 and the pull rope 27 are passed through the second section of pipe pile pipe, and then the second section of pipe pile is lifted and welded to the first section of pipe pile, and then the airbag 22 is deflated and lifted to the position below the pipe mouth of the second section of pipe pile. If the number of pipe piles 1 is three or more sections, repeat the above steps until the last section of pipe pile 1 is driven into the road surface.

[0055] Preferably, step S3 specifically includes: S31: pulling out the deflation member 26 from the deflation port 25 by the pull rope 27, and the gas flows out from the deflation port 25, so that the pressure of the airbag 22 is reduced until the airbag 22 is separated from the inner wall of the pipe pile 1.

[0056] Preferably, after the airbag 22 is inflated, the loading bucket 21 can receive debris dropped from the pipe mouth of the pipe pile 1; when the loading bucket 21 is full, the airbag 22 can be deflated, the airbag 22 can be lifted out of the pipe pile 1, and the debris can be dumped out before continued use.

[0057] Refer to Figure 2 As shown, the airbag 22 should be kept away from the pipe opening of the pipe pile 1 to avoid the equipment crushing the airbag 22 when the pipe pile 1 is driven into the road surface, and to avoid scalding the airbag 22 when welding two sections of the pipe pile 1.

[0058] Refer to Figure 3 As shown, the cross-sectional shapes of the loading bucket 21 and the airbag 22 are set according to the inner shape of the pipe pile 1. When the airbag 22 is inflated, the size of the airbag 22 is larger than the inner size of the pipe pile 1; when the airbag 22 is deflated, the size of the airbag 22 is smaller than the inner size of the pipe pile 1.

[0059] Refer to Figure 3 As shown, the length of the pipe pile 1 is L1, the lengths of the lifting assembly 24 and the pull rope 27 are both L2, 1.5L1<L2<2L1. The setting of the length range enables the operator to easily pull the lifting assembly 24 and the pull rope 27 without restriction when deflating or fixing, so as to meet different working environments and operating requirements, and improve the convenience and efficiency of operation.

[0060] The present application also provides a construction method for a track bridge, comprising the following steps: Step S1: The road surface wellhead is blocked with the blocking device 2 for road surface paving and rail bridge construction; Step S2: leveling or paving the road surface until the entire road surface is paved; Step S3: Deflate the airbag 22 and lift the airbag 22 away; Step S4: installing auxiliary devices on the road surface wellhead.

[0061] Specifically, the road surface wellhead is first sealed with the sealing device 2, and then the road surface is leveled or paved with concrete or asphalt until the entire road surface is paved. Then, the deflation piece 26 is pulled out by the pull rope 27 to deflate the airbag 22. The gas flows out from the deflation port 25, thereby reducing the pressure of the airbag 22 and reducing the friction between the airbag 22 and the inner wall of the road surface wellhead until the two are separated, so that the airbag 22 can move unhindered in the road surface wellhead, and the airbag 22 is lifted away. Finally, auxiliary devices are installed on the road surface wellhead, such as manhole covers and other auxiliary devices.

[0062] In this embodiment, by setting a plugging device 2 for the road surface wellhead, it is possible to effectively prevent soil, debris or water from falling into the road surface wellhead during the construction process, ensuring that the paving work proceeds smoothly, thereby improving the overall construction efficiency. In the process of paving or leveling the road surface, it is not necessary to plug the road surface wellhead with a manhole cover or other auxiliary devices. The plugging device 2 can conveniently and quickly protect the road surface wellhead, and after the road surface paving is completed, the plugging device 2 can be easily lifted away, and the inside of the road surface wellhead remains clean without the need for additional cleaning, thereby reducing construction time and saving costs. Embodiment 2

[0063] This embodiment is different from the first embodiment in that, in this embodiment, the venting member 26 can also be set as a venting valve, which is connected to the pull rope 27. The venting valve is used to deflate or block the air vent 25. The venting valve can accurately release gas to meet different deflation requirements. Embodiment 3

[0064] This embodiment is different from the first embodiment in that, in this embodiment, Fig.13 As shown, a limiting member 29 is provided between the bottom of the loading bucket 21 and the airbag 22 . The limiting member 29 can be set as a rope. The limiting member 29 is located in the middle position of the loading bucket 21 . The limiting member 29 is used to fix the position of the airbag 22 .

[0065] In this embodiment, by setting a limit member 29, the limit member 29 can pull the airbag 22. The limit member 29 is used to fix the position of the airbag 22 to prevent the airbag 22 from sinking during the inflation process, ensuring that the gas can be evenly dispersed to both sides of the airbag 22, thereby improving the stability of the airbag 22.

[0066] The present application is described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A blocking device for road paving and rail bridge construction, characterized in that: include: A loading bucket (21), the loading bucket (21) being used to receive debris dropped from a road surface wellhead or a pipe opening of a pipe pile (1) during road surface paving or rail bridge construction; An air bag (22), the air bag (22) being wrapped around the loading bucket (21); An inflation port (23), the inflation port (23) being used to inflate the airbag (22); A hoisting assembly (24), the hoisting assembly (24) being connected to the loading bucket (21), the hoisting assembly (24) being used to fix the loading bucket (21) in a road surface wellhead or in a pipe pile (1).

2. The blocking device for road paving and rail bridge construction according to claim 1 is characterized in that: The blocking device (2) further comprises an air release port (25) and at least two handles (211), wherein the air release port (25) is used to release air from the airbag (22); The two handles (211) are both connected to the lifting assembly (24); the handles (211) are fixedly mounted on the loading bucket (21); and the two handles (211) are symmetrically arranged along the center line of the loading bucket (21); The inflation port (23) is arranged on the loading bucket (21) or on the air bag (22); The air release port (25) is arranged on the loading bucket (21) or on the air bag (22).

3. The blocking device for road paving and rail bridge construction according to claim 2 is characterized in that: The blocking device (2) further comprises a deflation member (26) and a pull rope (27), wherein the deflation member (26) is connected to the pull rope (27), and the deflation member (26) is pulled by the pull rope (27) to achieve deflation of the airbag (22); The air release member (26) is configured as an air release plug; or, The air release member (26) is configured as an air release valve; The deflation member (26) is used to deflate or seal the deflation port (25).

4. The blocking device for road paving and rail bridge construction according to claim 1 is characterized in that: The inner wall of the airbag (22) is connected to the outer wall of the loading bucket (21), the highest point of the airbag (22) is higher than the highest point of the loading bucket (21), and there is an arc-shaped transition between the inner side wall of the airbag (22) and the inner side of its bottom; Wherein, at least a portion of the top of the airbag (22) is connected to the inner wall of the loading bucket (21); or, The top of the air bag (22) is at least partially connected to the outer wall of the loading bucket (21).

5. The blocking device for road paving and rail bridge construction according to claim 1 is characterized in that: The blocking device (2) further comprises a fixing member (28), and an end of the loading bucket (21) is connected to the airbag (22) via the fixing member (28); A sealing ring is provided between the fixing member (28) and the airbag (22); there are a plurality of fixing members (28), and a single fixing member (28) corresponds to a single sealing ring.

6. The blocking device for road paving and rail bridge construction according to claim 1 is characterized in that: A limiting member (29) is provided between the bottom of the loading bucket (21) and the airbag (22); the limiting member (29) is located in the middle of the loading bucket (21); and the limiting member (29) is used to fix the position of the airbag (22).

7. A construction method for a rail bridge, characterized in that: The method comprises the following steps: Step S1: blocking the pipe pile with the blocking device for road paving and rail bridge construction as claimed in any one of claims 1 to 6; Step S2: driving the pipe piles into the road surface to the designed elevation; Step S3: Deflate the airbag and lift it away; finally, refill the concrete in the pipe pile; and then pour cement components for rail transit pavement facilities on the upper end of the pipe pile.

8. The construction method of a track bridge according to claim 7, characterized in that: After step S1 and before step S2, the method further includes: Lift the plugging device to the position below the pipe opening of the pipe pile; Before the pipe pile is driven into the road surface, the vent is blocked with a venting piece, the lifting assembly is tied to the handle, the pull rope is tied to the venting piece, and air is inflated into the airbag through the inflation port to expand the airbag and press the inner wall of the pipe pile.

9. The construction method of a track bridge according to claim 7, characterized in that: After step S2 and before step S3, the method further includes: Pass the lifting assembly and the pull rope through the next section of the pile pipe; lift the next section of the pile and fix it with the previous section of the pile; Deflate the airbag and lift it to the position below the mouth of the next section of the pipe pile; repeat the above steps until the last section of the pipe pile is driven into the road surface.

10. A road paving construction method, characterized in that: The method comprises the following steps: Step S1: sealing the road surface wellhead with the sealing device for road surface paving and rail bridge construction as claimed in any one of claims 1 to 6; Step S2: leveling or paving the road surface until the road surface paving is completed; Step S3: Deflate the airbag and lift it away; Step S4: installing auxiliary devices on the road surface wellhead.

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