Blocking device and construction method for road paving and rail bridge construction

Abstract

The present application provides a blocking device for road paving and rail bridge construction, comprising a loading bucket, an airbag, an inflation port, and a hoisting assembly. The loading bucket is used to receive debris that falls from a road wellhead or a pipe pile opening during road paving or rail bridge construction. The airbag is enclosed in the loading bucket. The inflation port is used to inflate the airbag. The hoisting assembly is connected to the loading bucket, and the hoisting assembly is used to secure the loading bucket to the road wellhead or inside the pipe pile. A method for constructing a rail bridge is also disclosed: Step S1: Block the pipe pile using the blocking device for road paving and rail bridge construction described above; Step S2: Drive the pipe pile into the road surface to the designed elevation; Step S3: Deflate the airbag and hoist it away; Finally, refill the pipe pile with concrete; and then cast cement components for rail transit pavement facilities at the top of the pipe pile. The present application can prevent debris and dirt from falling into the pipe pile during construction, effectively block the pipe pile opening, and contribute to the high-quality construction of rail transit.

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 construction method for road paving and rail bridge construction. Background Art

[0002] Pile foundation is an important foundation form in industries such as civil engineering, transportation engineering, and water conservancy engineering. 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, and a large number of pre-piped piles are needed as the bearing foundation.

[0003] During the production process of pipe piles, the centrifugal force generated by the rotation of a centrifuge is often used to vibrate and compact the concrete used to form the piles, thereby improving the quality of the piles. This process results in the center of the pile being unable to be filled with concrete, resulting in a hollow state. Due to the moment of inertia formula, this hollow state reduces the bending resistance of the piles, but also reduces their weight, facilitating transportation and lifting. Therefore, in construction projects, after the piles are formed, concrete is backfilled into the hollow area to enhance the piles' bending and load-bearing resistance.

[0004] When driving piles into soft soil, the construction site's pavement often contains impurities such as soil, rocks, and plant debris. As the piles are driven downward through the pavement, vibration and impact can disturb and dislodge these impurities. Especially in soft soil, where the soil is highly fluid, impurities are more likely to enter the pile's opening, compromising its internal cleanliness and potentially causing quality issues during the subsequent concrete pour.

[0005] During the construction of rail transit viaduct columns, as the piles are driven through the road surface, vibration and impact can disturb and dislodge impurities from the surrounding road surface, such as soil, rocks, and other debris. This is known as pipe contamination. After the piles are constructed, especially as they connect to the viaduct's concrete supports, these impurities can easily affect the cleanliness of the piles, adversely affecting subsequent concrete pouring and structural stability. Failure to clean up these debris after the piles are completed will affect their service life.

[0006] Therefore, in actual engineering, it is required to clean the debris in the pipe before re-pouring 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 the pollution in the pipe.

[0007] A common practice in construction is to clean the pipe interior with a high-pressure water gun after pile construction to remove debris. However, the length of a completed pile is typically 8 to 40 meters, and the space inside the pipe is very narrow, making high-pressure water gun cleaning ineffective. This method also wastes a lot of water and produces a large amount of mud, which is environmentally unfriendly.

[0008] Publication number CN106592595A discloses a method for sealing the orifice of a PHC pipe pile with an air bag, particularly a method for supplementing and improving the orifice sealing method of a PHC pipe pile. The specific steps are: first, an air bag is placed into the orifice of the pipe pile, and then air is injected into the air bag with an air pump to expand the air bag and tightly fit the pipe wall of the pipe pile, thereby sealing 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, the air bag is deflated and recovered.

[0009] In the prior art PHC pile hole plugging method using an air bag, when the air bag is inflated, the inflation speed is slow and the inflation process takes a long time. When the air bag is deflated, the deflation time is fast. Debris, mud, cement slurry and other debris will fall from both sides of the air bag into the interior of the pile, which may easily lead to the need for additional cleaning work during subsequent construction, increase the complexity and time cost of construction, and have low plugging efficiency.

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

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

[0012] To achieve the above objectives, the present application provides a blocking device for road paving and rail bridge construction, comprising:

[0013] A loading bucket is used to receive debris dropped from a road surface wellhead or a pipe pile opening during road paving or rail bridge construction;

[0014] an airbag, the airbag being enclosed in the loading bucket;

[0015] an inflation port, the inflation port being used to inflate the airbag;

[0016] 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.

[0017] Compared with the existing technology, the present invention's blocking device for road paving and rail bridge construction uses an airbag and a loading bucket. When the airbag expands, it can fit tightly against the inner wall of the pile. The entire process ensures that no debris on the road falls into the pile during pile construction, effectively blocks the pile hole, and prevents debris and dirt from falling into the pile during construction, thereby keeping the interior of the pile clean. It can adapt to piles of different diameters and lengths, has good versatility, and can meet a variety of construction requirements. Among them, the lifting assembly can fix the blocking device inside the pile, and the loading bucket can receive debris that falls from the pile mouth, avoiding direct impact of the debris on the airbag. While reducing costs, it also greatly improves on-site engineering efficiency. It also reduces environmental pollution caused by cleaning debris inside the pile, contributing to green and low-carbon construction and high-quality rail transit construction.

[0018] 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;

[0019] The two handles are both 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;

[0020] The inflation port is arranged on the loading bucket or the air bag;

[0021] The air release port is arranged on the loading bucket or the air bag.

[0022] In this embodiment, by providing an air release port and a handle, the operator can conveniently control the inflation and deflation process. The inflation port can be provided on the loading bucket or on the air bag, which increases the flexibility of the design and improves the convenience of construction.

[0023] 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;

[0024] The air release member is configured as an air release plug;

[0025] or,

[0026] The air release member is configured as an air release valve;

[0027] The deflation member is used for deflation or sealing of the deflation port.

[0028] 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.

[0029] 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;

[0030] Wherein, the top of the airbag is at least partially connected to the inner wall of the loading bucket;

[0031] or,

[0032] The top of the air bag is at least partially connected to the outer wall of the loading bucket.

[0033] In this embodiment, the highest point of the airbag is higher than the highest point of the loading bucket, so as 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.

[0034] 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;

[0035] A sealing ring is provided between the fixing member and the airbag. There are multiple fixing members, and each fixing member corresponds to a single sealing ring.

[0036] In this embodiment, a sealing ring is provided between the fixing member and the airbag, which can effectively prevent gas leakage, ensure that the airbag remains in a well-sealed state during inflation and use, and improve overall safety.

[0037] 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.

[0038] In this embodiment, a limiter is provided to fix the position of the airbag, thereby preventing the airbag from sinking during inflation and ensuring that the gas can be evenly dispersed to both sides of the airbag, thereby improving the stability of the airbag.

[0039] The present application also provides a construction method for a track bridge, comprising the following steps:

[0040] Step S1: The pipe pile is sealed using the sealing device for road paving and rail bridge construction described above;

[0041] Step S2: driving the pipe piles into the road surface to the designed elevation;

[0042] Step S3: Deflate the airbag and lift it away; finally, refill the concrete in the pipe pile; and then cast cement components for rail transit pavement facilities on the upper end of the pipe pile.

[0043] Compared to existing technologies, the rail bridge construction method of the present application uses a blocking device to seal the pipe piles, effectively preventing soil, debris, or water from falling into the pipe piles during rail transit construction, thereby ensuring the structural integrity of the pipe piles. Furthermore, by providing an airbag that fully expands and presses against the inner wall of the pipe pile, the airbag ensures its sealing, providing a good foundation for subsequent construction. Operators can quickly and conveniently inflate and deflate the airbag, improving construction efficiency, reducing construction time, reducing costs and increasing efficiency, and enhancing the quality of pipe pile construction, ensuring the service performance of the pipe piles.

[0044] 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 steps are specifically further included:

[0045] Hoist the plugging device to the position below the pipe pile mouth;

[0046] Before driving the pipe pile into the road surface, block the air vent with an air vent, tie the lifting assembly to the handle, tie the pull rope to the air vent, and inflate the airbag through the inflation port to expand the airbag and press the inner wall of the pipe pile.

[0047] 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 steps are specifically further included:

[0048] Pass the lifting assembly and the pull rope through the next section of the pile; lift the next section of the pile and securely connect it to the previous section;

[0049] Deflate the airbag and lift it to the position below the mouth of the next section of the pile; repeat the above steps until the last section of the pile is driven into the road surface.

[0050] The present application also provides a road paving construction method, comprising the following steps:

[0051] Step S1: sealing the road surface wellhead using the above-mentioned sealing device for road paving and rail bridge construction;

[0052] Step S2: leveling or paving the road surface until the entire road surface is paved;

[0053] Step S3: Deflate the airbag and lift it away;

[0054] Step S4: Install auxiliary devices on the road surface wellhead.

[0055] Compared with the existing technology, the road paving construction method of the present application can effectively prevent soil, debris or water from falling into the road surface wellhead during construction by blocking the road surface wellhead, ensuring the smooth progress of the paving work, thereby improving the overall construction efficiency. In particular, during the paving or leveling of the road surface, there is no need to block the road surface wellhead with a manhole cover or other auxiliary device. The blocking device can conveniently and quickly protect the road surface wellhead. After the road surface is paved, 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

[0056] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0057] Figure 1 This is a schematic structural diagram of a blocking device in a structure of a blocking device and a construction method for road paving and rail bridge construction provided in one embodiment of the present application;

[0058] Figure 2 This is the construction sequence of the blocking device and construction method for road paving and rail bridge construction provided by an embodiment of the present application Figure 1 ;

[0059] Figure 3 This is the construction sequence of the blocking device and construction method for road paving and rail bridge construction provided by an embodiment of the present application Figure 2 ;

[0060] Figure 4 This is the construction sequence of the blocking device and construction method for road paving and rail bridge construction provided by an embodiment of the present application Figure 3 ;

[0061] Figure 5 This is the construction sequence of the blocking device and construction method for road paving and rail bridge construction provided by an embodiment of the present application Figure 4 ;

[0062] Figure 6 This is the construction sequence of the blocking device and construction method for road paving and rail bridge construction provided by an embodiment of the present application Figure 5 ;

[0063] Figure 7 This is the construction sequence of the blocking device and construction method for road paving and rail bridge construction provided by an embodiment of the present application Figure 6 ;

[0064] Figure 8 This is the construction sequence of the blocking device and construction method for road paving and rail bridge construction provided by an embodiment of the present application Figure 7 ;

[0065] Figure 9 This is the construction sequence of the blocking device and construction method for road paving and rail bridge construction provided by an embodiment of the present application Figure 8 ;

[0066] Figure 10 This is a schematic diagram of a pipe pile refilling concrete structure for a plugging device and construction method for road paving and rail bridge construction provided in one embodiment of the present application;

[0067] Figure 11 For the elevated urban rail station after construction using this application;

[0068] Figure 12 For the urban rail elevated line after construction using this application;

[0069] Figure 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.

[0070] Reference numerals:

[0071] 1. Pipe piles; 2. Sealing device; 3. Completed piles; 4. Elevated station; 5. Elevated route;

[0072] 21. Loading bucket; 22. Air bag; 23. Inflation port; 24. Lifting assembly; 25. Deflator; 26. Deflator; 27. Drawstring; 28. Fixing member; 29. ​​Limiting member;

[0073] 211. Handle; 261. Perforation. DETAILED DESCRIPTION

[0074] In order to enable those skilled in the art to better understand the technical solutions 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 intended to limit the present disclosure.

[0075] 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.

[0076] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing this 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 cannot be understood as limiting this application.

[0077] The present application will be described in further detail below with reference to the accompanying drawings. Figures 1 to 13 illustrate. Example 1

[0078] 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 certain city rail elevated section station and track, which requires pile foundation construction on the station and elevated line. Figures 1 to 12 As shown, the present embodiment provides a blocking device for road paving and rail bridge construction, which can be applied to pipe piles 1 of any shape in the pipe, and can even achieve blocking 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 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.

[0079] In this embodiment, through the cooperation of the airbag 22 and the loading bucket 21, when the airbag 22 expands, the inflation speed is relatively fast, and it can closely fit the inner wall of the pipe pile 1. The entire process ensures that no debris falls into the pipe pile 1 during the construction of the road surface wellhead or pipe pile 1, effectively blocking the pipe hole of the pipe pile 1, preventing debris and dirt from falling into it during construction, thereby maintaining the cleanliness of the road surface wellhead or pipe pile 1. It can adapt to pipe piles 1 of different diameters and lengths, has good versatility, and can meet various construction requirements. Among them, the lifting assembly 24 can fix the plugging device 2 within the pipe pile 1, and the loading bucket 21 can receive debris that falls from the road surface wellhead or pipe pile 1, preventing direct impact of the debris on the airbag 22, thereby enhancing the stability and durability of the plugging device 2, reducing costs and greatly improving on-site engineering efficiency. It also reduces the environmental pollution caused by cleaning debris in the pipe pile 1, promoting green and low-carbon construction and promoting high-quality rail transit construction.

[0080] Preferably, Figure 1 As shown, the blocking device 2 also includes an air deflation port 25 and at least two handles 211. The handles 211 can be made of rigid material. The air deflation port 25 is used to deflate 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. The two handles 211 are fixed to the inner wall of the loading bucket 21 by welding. 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 deflation port 25 away from the bottom of the loading bucket 21. The inflation port 23 is arranged on the loading bucket 21, and the air deflation port 25 is arranged on the loading bucket 21.

[0081] 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.

[0082] In this embodiment, the two handles 211 cooperate with the lifting assembly 24, allowing the operator to pull the lifting assembly 24 to pull the plugging device 2, thereby facilitating operation. Furthermore, the provision of the air release port 25 and the handle 211 facilitates operator control during the inflation and deflation processes. The inflation port 23 can be provided on the loading barrel 21 or the airbag 22, increasing design flexibility and enhancing construction convenience.

[0083] Preferably, Figure 1 As shown, the blocking device 2 also includes a deflation member 26 and a pull cord 27. The pull cord 27 is made of a steel wire rope and is connected to the deflation member 26. The deflation member 26 is located at the end of the deflation port 25 away from the handle 211. Pulling the deflation member 26 by the pull cord 27 deflates the airbag 22. The deflation member 26 is configured as a deflation plug and is used to deflate or block the deflation port 25. The deflation member 26 is provided with a through-hole 261 for the pull cord 27 to pass through. The pull cord 27 is connected to the deflation member 26 through the through-hole 261, allowing the operator to pull the pull cord 27 smoothly during operation, thereby improving work efficiency.

[0084] In this embodiment, the deflation member 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 member 26. The operator does not need to directly touch the deflation member 26 to achieve rapid deflation of the airbag 22, which reduces the complexity and potential risks of the operation and improves practical efficiency.

[0085] Preferably, Figure 1As shown, the loading bucket 21 is a cylindrical 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 glued to the outer wall of the loading bucket 21. The airbag 22 is symmetrically arranged along the centerline of the loading bucket 21. The highest point of the airbag 22 is higher than the highest point of the loading bucket 21. The loading bucket 21 is smaller than the size of the airbag 22. There is an arc-shaped transition between the inner sidewall of the airbag 22 and the inner side of its bottom. The top of the airbag 22 is at least partially connected to the inner wall of the loading bucket 21, or at least partially connected to the outer wall of the loading bucket 21.

[0086] In this embodiment, the highest point of the airbag 22 is higher than the highest point of the loading bucket 21. This ensures 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, reducing the difficulty of cleaning. The inner wall of the airbag 22 is bonded to the outer wall of the loading bucket 21 with glue, which can enhance the connection strength between the airbag 22 and the loading bucket 21 and improve the sealing effect. Specifically, the right inner wall of the airbag 22 and the inner side of the bottom of the airbag 22 have an arc-shaped transition, the left inner wall of the airbag 22 and the inner side of the bottom of the airbag 22 have an arc-shaped transition, the right outer wall of the airbag 22 and the outer side of the bottom of the airbag 22 have a right-angled transition, and the left outer wall of the airbag 22 and the outer side of the bottom of the airbag 22 have a right-angled transition. This allows the airbag 22 to fit tightly against the inner wall of the pile 1 after inflation, preventing the airbag 22 from becoming spherical after inflation. This facilitates the uniform flow of gas to both sides of the airbag 22 during inflation, ensuring 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, which prevents the connection between the airbag 22 and the loading bucket 21 from being damaged or leaking after long-term use, thereby enhancing the stability of the airbag 22 and extending the use time.

[0087] 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 .

[0088] Preferably, Figure 1 As shown, the blocking device 2 also includes a fixing part 28, which is set as a rivet. The end of the loading bucket 21 is connected to the airbag 22 through the fixing part 28. A plurality of sealing rings are provided between the fixing part 28 and the airbag 22. There are multiple fixing parts 28, and the multiple fixing parts 28 are arranged at intervals. A single fixing part 28 corresponds to a single sealing ring.

[0089] In addition, the fixing member 28 may also be other devices with a fixed connection function and is not limited to the above embodiment, as long as it can achieve fixation.

[0090] In this embodiment, a sealing ring is provided between the fixing member 28 and the airbag 22 to effectively prevent gas leakage, ensuring that the airbag 22 remains tightly sealed during inflation and use, thereby improving overall safety. Each fixing member 28 corresponds to a single sealing ring, making replacement of the sealing ring more convenient. Maintenance personnel can quickly identify and replace damaged sealing rings, reducing maintenance costs and time.

[0091] Refer to Figure 11 As shown, when it is an urban rail elevated station 4, cement components for rail transit pavement facilities are poured between the completed piles 3 and the elevated station 4, referring to FIG. Figure 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.

[0092] The present application also provides a construction method for a track bridge, comprising the following steps:

[0093] Step S1: The pipe pile 1 is sealed with the sealing device 2 for road paving and rail bridge construction;

[0094] Step S2: driving the pipe pile 1 into the road surface to the designed elevation;

[0095] Step S3: Deflate the airbag 22 and lift it away; finally, refill the concrete in the pipe pile 1; and then cast cement components for rail transit pavement facilities on the upper end of the pipe pile 1.

[0096] Reference Figures 2 to 4 As shown, after step S1 and before step S2, the following steps are specifically included: hoisting the blocking 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, blocking the air vent 25 with the air release member 26, tying the lifting assembly 24 to the handle, tying the pull rope 27 to the air release member 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.

[0097] 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 release member 26. A 14 m 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 air bag 22 through the inflation port 23. The inflation pressure value range is 0.2 MPa, so that the air bag 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. The air release member 26 is pulled out by pulling the rope 27. The gas flows out from the air release port 25, which reduces the pressure of the airbag 22 and the friction between the airbag 22 and the inner wall of the pipe pile 1 until the two are separated. This allows the airbag 22 to move unhindered in the pipe pile 1. The airbag 22 is then hoisted away and the pipe pile 1 is filled with C35 concrete for re-injection. The operation is convenient, the construction efficiency is high and the cost is low.

[0098] Reference Figures 5 to 12 As shown, after step S2 and before step S3, the following steps are specifically included:

[0099] Pass the lifting assembly 24 and the pull rope 27 into the next section of the pile; lift the next section of the pile and fix it to the previous section; 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.

[0100] In this embodiment, the pipe pile 1 can be assembled from multiple sections, with adjacent piles 1 welded together to accommodate varying pile lengths. If the pipe pile 1 consists of two sections, from bottom to top, the first and second sections are identified. After the first section is driven into the road surface, the hoisting assembly 24 and the pull rope 27 are passed through the second section. The second section is then hoisted and welded to the first. The airbag 22 is then deflated and raised to a position below the opening of the second section. If the pipe pile 1 consists of three or more sections, the above steps are repeated until the last section is driven into the road surface.

[0101] Preferably, step S3 further includes: S31: pulling the deflation member 26 out of the deflation port 25 by the pull rope 27, so that the gas flows out of the deflation port 25, thereby reducing the pressure of the airbag 22 until the airbag 22 is separated from the inner wall of the pipe pile 1.

[0102] Preferably, after the airbag 22 is inflated, the loading bucket 21 can receive debris dropped from the pipe opening 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.

[0103] 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.

[0104] 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.

[0105] Refer to Figure 3 As shown, the length of the pipe pile 1 is L1, the length of the lifting component 24 and the pull rope 27 are both L2, 1.5L1<L2<2L1. The setting of the length range allows the operator to easily pull the lifting component 24 and the pull rope 27 without restriction when deflation or fixing, so as to meet different working environments and operation requirements, and improve the convenience and efficiency of operation.

[0106] The present application also provides a construction method for a track bridge, comprising the following steps:

[0107] Step S1: The road surface wellhead is sealed with the sealing device 2 for road paving and rail bridge construction;

[0108] Step S2: leveling or paving the road surface until the entire road surface is paved;

[0109] Step S3: Deflate the airbag 22 and lift the airbag 22 away;

[0110] Step S4: Install auxiliary devices on the road surface wellhead.

[0111] 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, reducing the pressure of the airbag 22 and 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 unimpeded 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.

[0112] In this embodiment, by installing a sealing device 2 at the pavement wellhead, soil, debris, or water can be effectively prevented from falling into the pavement wellhead during construction, ensuring smooth paving work and improving overall construction efficiency. During the pavement paving or leveling process, there is no need to seal the pavement wellhead with a manhole cover or other auxiliary device. The sealing device 2 can conveniently and quickly protect the pavement wellhead. After the pavement is paved, the sealing device 2 can be easily removed, and the interior of the pavement wellhead remains clean, eliminating the need for additional cleaning. This reduces construction time and saves costs. Example 2

[0113] 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 seal the air vent 25. The venting valve can accurately release gas to meet different venting needs. Example 3

[0114] The difference between this embodiment and the first embodiment is that, in this embodiment, Figure 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 of the loading bucket 21 and is used to fix the position of the airbag 22 .

[0115] 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.

[0116] The present application has been described in detail above. Specific examples have been used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application and its core concepts. It should be noted that, without departing from the principles of the present application, a number of improvements and modifications may be made to the present application by a person skilled in the art, and such improvements and modifications shall 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) is used to receive debris dropped from a road surface wellhead or a pipe opening of a pipe pile (1) during road paving or rail bridge construction; An air bag (22), the air bag (22) being enclosed in 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); 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 inner wall of the airbag (22) is connected to the outer wall of the loading bucket (21), and the highest point of the airbag (22) is higher than the highest point of the loading bucket (21).

2. The blocking device for road paving and rail bridge construction according to claim 1, 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 hoisting 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 provided on the loading bucket (21) or the air bag (22); The air release port (25) is provided on the loading bucket (21) or the air bag (22).

3. The blocking device for road paving and rail bridge construction according to claim 2, characterized in that: The degassing member (26) is configured as a degassing 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, characterized in that: There is an arc-shaped transition between the inner side wall of the airbag (22) and the inner side of its bottom; Wherein, the top of the air bag (22) is at least partially 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, characterized in that: The blocking device (2) further includes a fixing member (28), and the 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), and there are multiple fixing members (28), with each fixing member (28) corresponding to a single sealing ring.

6. The blocking device for road paving and rail bridge construction according to claim 1, 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 is used to fix the position of the airbag (22).

7. A construction method for a track bridge, characterized in that: The method comprises the following steps: Step S1: blocking the pipe pile using the blocking device for road paving and rail bridge construction according to 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 cast 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: Hoist the plugging device to the position below the pipe pile mouth; Before driving the pipe pile into the road surface, block the air vent with an air vent, tie the lifting assembly to the handle, tie the pull rope to the air vent, and inflate 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; lift the next section of the pile and securely connect it to the previous section; Deflate the airbag and lift it to the position below the mouth of the next section of the pile; repeat the above steps until the last section of the 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 a road surface wellhead using the sealing device for road paving and rail bridge construction according to any one of claims 1 to 6; Step S2: leveling or paving the road surface until the road surface is paved; Step S3: Deflate the airbag and lift it away; Step S4: Install auxiliary devices on the road surface wellhead.

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