Large-area concrete underwater bottom sealing platform construction method

Abstract

According to the large-area concrete underwater bottom sealing platform construction method, by optimizing a pouring device and a construction process, the construction cost is remarkably reduced, the efficiency is improved, the problems of concrete segregation and water backflow are effectively avoided, and the construction efficiency is improved. According to the underwater bottom sealing device, the consistency and reliability of the bottom sealing quality are ensured, accurate pouring can be achieved in a complex environment through a flexible moving and positioning system, the engineering safety is greatly improved, the construction progress is greatly accelerated, and the problem that in the underwater bottom sealing process, water flows back into a grouting pipe, and consequently first sealing fails is solved.

Description

Technical Field

[0001] The invention relates to the field of underwater bottom sealing construction, and in particular to a construction method for a large-area concrete underwater bottom sealing platform. Background Art

[0002] In the construction process of engineering projects such as underwater bridge abutments and underground pump houses, caisson construction methods are widely used, especially in environments with abundant groundwater or where water operations are required. For the pouring of underwater bottom concrete in such projects, the traditional practice is usually to build a Bailey bridge platform and use conventional conduits for pouring. This method has obvious shortcomings when facing underwater concrete bottom sealing of large areas of warehouse surfaces: first, setting up a bridge platform is not only costly, but also has a long construction period, which affects the overall project progress; secondly, due to the large volume of the first seal concrete, the conventional conduit pouring method is difficult to ensure uniform distribution of concrete, which can easily lead to concrete segregation; in addition, in the case of turbulent water flow or large waves, water may flow back into the grouting pipe, which will seriously affect the quality of the concrete and even cause the first seal to fail. Summary of the invention

[0003] The main purpose of the present invention is to provide a large-area concrete underwater bottom sealing platform construction method, which solves the problem of water backflow into the grouting pipe during the underwater bottom sealing process, resulting in the failure of the first sealing.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a large-area concrete underwater bottom sealing platform construction method, the method comprising: S1. placing a pouring device on the wall of the caisson; S2, move the pouring device to the position where pouring is required, and then adjust the grouting assembly to move to the specified position; S3, after the grouting assembly reaches the designated position, the sinking assembly is lowered, and after the sinking assembly reaches the designated height, the grouting assembly starts grouting; S4. After the grouting is completed, the sinking assembly is folded up and the pouring device is moved to the next pouring area; S5. Repeat steps S1-S4 to complete the large-area concrete underwater bottom sealing work.

[0005] In the preferred embodiment, in step S1, the casting device includes a moving component, an extension component is provided on one side of the moving component, a movable grouting component is provided above the extension component, and a detachable sinking component is provided below the grouting component.

[0006] In a preferred embodiment, the mobile assembly includes a mobile top frame, a mobile inner frame is provided on the side of the mobile top frame facing the inside of the caisson, and a mobile outer frame is provided on the side outside the caisson; A plurality of vertical frames are arranged above the movable top frame, a double-shaft motor is arranged between the vertical frames, a transmission roller is arranged between the double-shaft motor and the vertical frames, and the transmission roller is rotatably connected to the vertical frames; A plurality of transverse moving brackets are also provided on one side of the vertical frame, a transverse moving motor is provided between the transverse moving brackets, a roller groove is provided below the transverse moving bracket, a plurality of rollers are provided in the roller groove, the rollers are connected to the transverse moving motor by a chain, and the rollers are used to walk on the caisson.

[0007] In the preferred embodiment, the mobile outer frame is arranged vertically with the mobile top frame, a balancing frame is provided on one side of the mobile outer frame, the balancing frame is arranged vertically with the mobile outer frame, and a counterweight box is provided at the tail end of the balancing frame; The counterweight box includes a distribution box and a counterweight block; A roller is also provided between the mobile outer frame and the outer wall of the caisson, a roller frame is provided on one side of the roller, a retractable clamping push rod is connected to one side of the roller frame, the clamping push rod is fixedly connected to the mobile outer frame, and the clamping push rod is used to make the roller close to the wall of the caisson.

[0008] In the preferred embodiment, the movable inner frame and the movable top frame are arranged vertically, a plurality of roller brackets are arranged between the movable inner frame and the well wall inside the caisson, and rollers are arranged between the roller brackets and the well wall; A roller frame is provided on one side of the roller, and a retractable pressing push rod is connected to one side of the roller frame. The pressing push rod is fixedly connected to the roller frame, and the pressing push rod is used to make the roller close to the well wall; One side of the movable inner frame is connected to the extension assembly by bolts.

[0009] In a preferred embodiment, the extension assembly includes an extension bracket, one end of which is provided with an extension tail plate, and the extension tail plate is arranged vertically with the extension bracket; The extended tailboard is provided with a plurality of tailboard slots, a rotatable transmission wheel is provided in the tailboard slot, and a transmission belt is provided between the transmission wheel and the transmission roller; An oblique support bracket is also provided between the extension bracket and the movable inner frame.

[0010] In a preferred embodiment, the grouting assembly includes a grouting slide, which is arranged on the extension bracket and is slidably connected to the extension bracket; A hopper is provided above the grouting slide, winches are provided on both sides of the hopper, and sliding connectors are provided on the other two sides. The sliding connectors are connected to the transmission belt by bolts, and the grouting slide will be driven to move when the transmission belt moves; A flexible injection pipe is arranged at the bottom of the feeding hopper, and a bottom flange is arranged at the bottom end of the flexible injection pipe.

[0011] In a preferred embodiment, the bottom sinking assembly includes a hard injection pipe, a top flange is provided at the top end of the hard injection pipe, and the top flange is used to connect with the bottom flange; An outer cylinder is arranged below the hard injection pipe, an inner cylinder is arranged inside the outer cylinder, a top hole is arranged on the top of the inner cylinder, the top hole is communicated with the hard injection pipe, a bottom hole is also arranged at the bottom of the inner cylinder, and a plurality of branch pipes are arranged outside the outer cylinder.

[0012] In the preferred embodiment, the outlet of the branch pipe is lower than the bottom hole; A fixed rod is also provided on one side of the hard injection pipe, the fixed rod is hinged with the hard injection pipe, a pipe outer float is provided on one side of the outer end of the fixed rod, the pipe outer float and the fixed rod are connected by a hard rod, a rope is provided at one end inside the fixed rod, and a pipe inner plug is provided at the bottom end of the rope; A swing motor is also arranged above the fixed rod, and an electromagnetic pull rod is arranged on the swing motor. The electromagnetic pull rod is used for adsorbing the fixed rod.

[0013] In the preferred embodiment, the average density of the floating ball outside the pipe is between water and concrete, the average density of the plug inside the pipe is the same as that of concrete, and the shape of the plug inside the pipe is: the upper part is conical and the bottom surface is spherical; The weight of the floating ball outside the tube is greater than the weight of the plug inside the tube plus the impact force of the concrete. When the concrete is poured to the preset elevation, the top surface of the concrete contacts the floating ball outside the tube, the floating ball outside the tube is lifted, and the force is transmitted to the plug inside the tube along the hard rod. The plug inside the tube drops to the bottom hole at the bottom of the inner tube and blocks it.

[0014] The present invention provides a large-area concrete underwater bottom sealing platform construction method, which has the following beneficial effects: the large-area concrete underwater bottom sealing platform construction method provided by the present invention significantly reduces the construction cost and improves the efficiency by optimizing the casting device and the construction process. The method effectively avoids the problems of concrete segregation and water backflow, ensures the consistency and reliability of the bottom sealing quality, and the flexible movement and positioning system enables precise casting even in complex environments, greatly improving the safety of the project and the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a construction isometric view of the pouring device of the present invention; Figure 2 is an axonometric view of the casting device of the present invention; Figure 3 is a partial view of the mobile assembly of the present invention; Figure 4 is a cross-sectional view of the transverse support of the present invention; Figure 5 is an axonometric view of the grouting assembly of the present invention; Figure 6 It is a construction schematic diagram of the pouring device of the present invention; Figure 7 is a schematic diagram of a sinking assembly of the present invention; Figure 8 is a cross-sectional view of the gimbal of the present invention; Fig. 9 It is a cross-sectional view of the grouting assembly of the present invention.

[0016] In the figure: caisson 1; pouring device 2; moving assembly 3; moving top frame 301; moving outer frame 302; vertical frame 303; double-shaft motor 304; driving roller 305; balancing frame 306; counterweight box 307; transverse support 308; transverse motor 309; roller groove 310; roller support 311; pressing push rod 312; roller frame 313; roller 314; distribution box 315; counterweight block 316; moving inner frame 317; extension assembly 4; extension support 401; extension tail plate 402; diagonal support 403 ; tail plate slot 404; transmission wheel 405; transmission belt 406; grouting assembly 5; grouting slide 501; sliding connector 502; winch 503; hopper 504; flexible injection pipe 505; bottom flange 506; sinking assembly 6; top flange 601; hard injection pipe 602; fixing rod 603; rope 604; float ball outside the pipe 605; plug inside the pipe 606; outer tube 607; branch pipe 608; inner tube 609; top hole 610; bottom hole 611; electromagnetic pull rod 612; swing motor 613. DETAILED DESCRIPTION

[0017] Example 1 like Figure 1-9 As shown, a large-area concrete underwater bottom sealing platform construction method comprises: S1, placing the pouring device 2 on the wall of the caisson 1; S2, move the pouring device 2 to the position where pouring is required, and then adjust the grouting assembly 5 to move to the specified position; S3, after the grouting assembly 5 reaches the designated position, the sinking assembly 6 is lowered, and after the sinking assembly 6 reaches the designated height, the grouting assembly 5 starts grouting; S4, after the grouting is completed, the sinking assembly 6 is retracted and the pouring device 2 is moved to the next pouring area; S5. Repeat steps S1-S4 to complete the large-area concrete underwater bottom sealing work.

[0018] In the preferred embodiment, in step S1 , the casting device 2 includes a moving component 3 , an extension component 4 is provided on one side of the moving component 3 , a movable grouting component 5 is provided above the extension component 4 , and a detachable bottom sinking component 6 is provided below the grouting component 5 .

[0019] In the preferred embodiment, the mobile assembly 3 includes a mobile top frame 301, a mobile inner frame 317 is provided on the side of the mobile top frame 301 facing the inside of the caisson 1, and a mobile outer frame 302 is provided on the side outside the caisson 1; A plurality of vertical frames 303 are arranged above the movable top frame 301, a double-shaft motor 304 is arranged between the vertical frames 303, a transmission roller 305 is arranged between the double-shaft motor 304 and the vertical frames 303, and the transmission roller 305 is rotatably connected to the vertical frames 303; A plurality of transverse moving brackets 308 are also provided on one side of the vertical frame 303, and a transverse moving motor 309 is provided between the transverse moving brackets 308. A roller groove 310 is provided below the transverse moving bracket 308, and a plurality of rollers 314 are provided in the roller groove 310. The rollers 314 are connected to the transverse moving motor 309 by a chain, and the rollers 314 are used to walk on the caisson 1.

[0020] In the preferred embodiment, the mobile outer frame 302 is arranged vertically with the mobile top frame 301, a balancing frame 306 is provided on one side of the mobile outer frame 302, the balancing frame 306 is arranged vertically with the mobile outer frame 302, and a counterweight box 307 is provided at the tail end of the balancing frame 306; The counterweight box 307 includes a distribution box 315 and a counterweight block 316; A roller 314 is also provided between the movable outer frame 302 and the outer wall of the caisson 1. A roller frame 313 is provided on one side of the roller 314. A retractable clamping push rod 312 is connected to one side of the roller frame 313. The clamping push rod 312 is fixedly connected to the movable outer frame 302. The clamping push rod 312 is used to make the roller 314 close to the wall of the caisson.

[0021] In the preferred embodiment, the movable inner frame 317 and the movable top frame 301 are arranged vertically, a plurality of roller brackets 311 are arranged between the movable inner frame 317 and the well wall inside the caisson 1, and rollers 314 are arranged between the roller brackets 311 and the well wall; A roller frame 313 is provided on one side of the roller 314, and a retractable pressing push rod 312 is connected to one side of the roller frame 313. The pressing push rod 312 is fixedly connected to the roller frame 311, and the pressing push rod 312 is used to make the roller 314 close to the well wall; One side of the movable inner frame 317 is connected to the extension assembly 4 by bolts.

[0022] In the preferred embodiment, the extension assembly 4 includes an extension bracket 401, one end of which is provided with an extension tail plate 402, and the extension tail plate 402 is arranged vertically with the extension bracket 401; The extended tail plate 402 is provided with a plurality of tail plate slots 404, a rotatable transmission wheel 405 is provided in the tail plate slot 404, and a transmission belt 406 is provided between the transmission wheel 405 and the transmission roller 305; A diagonal support bracket 403 is further provided between the extension bracket 401 and the movable inner frame 317 .

[0023] In the preferred embodiment, the grouting assembly 5 includes a grouting slide 501, which is arranged on the extension bracket 401, and the grouting slide 501 is slidably connected to the extension bracket 401; A hopper 504 is provided above the grouting slide 501, winches 503 are provided on both sides of the hopper 504, and sliding connectors 502 are provided on the other two sides. The sliding connectors 502 are connected to the transmission belt 406 by bolts, and the grouting slide 501 is driven to move when the transmission belt 406 moves; A flexible injection pipe 505 is provided at the bottom of the feeding hopper 504 , and a bottom flange 506 is provided at the bottom end of the flexible injection pipe 505 .

[0024] In the preferred embodiment, the bottom sinking assembly 6 includes a hard injection pipe 602, and a top flange 601 is provided at the top of the hard injection pipe 602, and the top flange 601 is used to connect with the bottom flange 506; An outer cylinder 607 is provided below the hard injection tube 602, an inner cylinder 609 is provided inside the outer cylinder 607, a top hole 610 is provided at the top of the inner cylinder 609, the top hole 610 is communicated with the hard injection tube 602, a bottom hole 611 is also provided at the bottom of the inner cylinder 609, and multiple branch pipes 608 are provided outside the outer cylinder 607.

[0025] In the preferred embodiment, the outlet of the branch pipe 608 is lower than the bottom hole 611; A fixed rod 603 is also provided on one side of the hard injection tube 602, and the fixed rod 603 is hinged to the hard injection tube 602. A tube outer float 605 is provided on one side of the outer end of the fixed rod 603, and the tube outer float 605 is connected to the fixed rod 603 through a hard rod. A rope 604 is provided at one end of the fixed rod 603, and a tube inner plug 606 is provided at the bottom end of the rope 604. A swing motor 613 is also provided above the fixed rod 603 , and an electromagnetic pull rod 612 is provided on the swing motor 613 . The electromagnetic pull rod 612 is used to adsorb the fixed rod 603 .

[0026] In the preferred embodiment, the average density of the outer floating ball 605 is between water and concrete, and the average density of the inner plug 606 is the same as that of concrete. The shape of the inner plug 606 is: the upper part is conical and the bottom surface is spherical; The weight of the floating ball 605 outside the tube is greater than the weight of the plug 606 inside the tube plus the impact force of the concrete. When the concrete is poured to the preset elevation, the top surface of the concrete contacts the floating ball 605 outside the tube, and the floating ball 605 outside the tube is lifted up. The force is transmitted to the plug 606 inside the tube along the hard rod. The plug 606 inside the tube descends to the bottom hole 611 at the bottom of the inner tube 609 and blocks it. Example 2 Further illustrate with reference to Example 1, Figure 6-7In the structure shown, the sinking assembly 6 operates as follows: when the concrete is first sealed, the extension assembly 4 is in a horizontal state, and the grouting assembly 5 is at a predetermined pouring point. Concrete is transported into the hopper 504. At this time, the fixing rod 603 is in a horizontal state due to the retraction of the electromagnetic pull rod 612. The poured concrete tilts down along the hard injection pipe 602 and flows down through the gap between the inner tube 609 and the plug 606 inside the pipe. The water flows from the bottom hole 611 under the inner cylinder 609 to the bottom of the outer cylinder 607, gradually accumulates to the top of the outer cylinder 607, flows into the branch pipe 608, and finally flows out. At this time, due to the arrangement of the inner cylinder 609 and the outer cylinder 607, when the concrete pouring speed is lower than the material discharge speed, the outer cylinder 607 is filled with concrete, which can prevent water from flowing back into the hard injection pipe 602, causing concrete segregation and first sealing failure. After the first sealing is completed, the concrete pouring continues until it reaches the preset elevation.

[0027] At this time, the top surface of the concrete contacts the outer floating ball 605, and the outer floating ball 605 is lifted up, and the force is transmitted to the inner plug 606 along the connecting line 4-12, and the inner plug 606 drops to the bottom hole 611 at the bottom of the inner tube 609 and blocks it. Then, the winch 503 is turned on to pull up the flexible injection tube 505. At this time, the outer floating ball 605 is no longer lowered by the buoyancy of the concrete, and the inner plug 606 is pulled up, and the remaining concrete in the hard injection tube 602 continues to flow out, completing the concrete pouring at this position.

[0028] Then, the transverse movement motor 309 is turned on to move to the next pouring point to continue pouring.

[0029] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A method for constructing a large-area concrete underwater bottom sealing platform. Its characteristics are: The method includes: S1, placing a pouring device (2) on the wall of the caisson (1); S2, moving the pouring device (2) to the position where pouring is required, and then adjusting the grouting assembly (5) to move to the designated position; S3, after the grouting assembly (5) reaches the designated position, the sinking assembly (6) is lowered, and after the sinking assembly (6) reaches the designated height, the grouting assembly (5) starts grouting; S4, after the grouting is completed, the sinking assembly (6) is retracted and the pouring device (2) is moved to the next pouring area; S5. Repeat steps S1-S4 to complete the large-area concrete underwater bottom sealing work.

2. A method for constructing a large-area concrete underwater bottom sealing platform according to claim 1, Its characteristics are: In step S1, the casting device (2) comprises a moving component (3), an extension component (4) is provided on one side of the moving component (3), a movable grouting component (5) is provided above the extension component (4), and a detachable bottom sinking component (6) is provided below the grouting component (5).

3. A method for constructing a large-area concrete underwater bottom sealing platform according to claim 2, Its characteristics are: The mobile assembly (3) comprises a mobile top frame (301), a side of the mobile top frame (301) facing the inside of the caisson (1) is provided with a mobile inner frame (317), and a side of the mobile top frame (301) facing the outside of the caisson (1) is provided with a mobile outer frame (302); A plurality of vertical frames (303) are arranged above the movable top frame (301), a double-shaft motor (304) is arranged between the vertical frames (303), a transmission roller (305) is arranged between the double-shaft motor (304) and the vertical frames (303), and the transmission roller (305) is rotatably connected to the vertical frames (303); A plurality of transverse moving brackets (308) are further provided on one side of the vertical frame (303), a transverse moving motor (309) is provided between the transverse moving brackets (308), a roller groove (310) is provided below the transverse moving bracket (308), a plurality of rollers (314) are provided in the roller groove (310), the rollers (314) are connected to the transverse moving motor (309) via a chain, and the rollers (314) are used to travel on the caisson (1).

4. A method for constructing a large-area concrete underwater bottom sealing platform according to claim 3, Its characteristics are: The movable outer frame (302) and the movable top frame (301) are arranged vertically, a balancing frame (306) is provided on one side of the movable outer frame (302), the balancing frame (306) and the movable outer frame (302) are arranged vertically, and a counterweight box (307) is provided at the rear end of the balancing frame (306); The counterweight box (307) includes a distribution box (315) and a counterweight block (316); A roller (314) is further provided between the movable outer frame (302) and the outer wall of the caisson (1); a roller frame (313) is provided on one side of the roller (314); a retractable pressing push rod (312) is connected to one side of the roller frame (313); the pressing push rod (312) is fixedly connected to the movable outer frame (302); and the pressing push rod (312) is used to allow the roller (314) to be in close contact with the wall of the caisson.

5. A method for constructing a large-area concrete underwater bottom sealing platform according to claim 3, Its characteristics are: The movable inner frame (317) and the movable top frame (301) are arranged vertically, a plurality of roller brackets (311) are arranged between the movable inner frame (317) and the well wall inside the caisson (1), and rollers (314) are arranged between the roller brackets (311) and the well wall; A roller frame (313) is provided on one side of the roller (314), a retractable pressing push rod (312) is connected to one side of the roller frame (313), the pressing push rod (312) is fixedly connected to the roller frame (311), and the pressing push rod (312) is used to make the roller (314) close to the well wall; One side of the movable inner frame (317) is connected to the extension assembly (4) by means of bolts.

6. A method for constructing a large-area concrete underwater bottom sealing platform according to claim 2, Its characteristics are: The extension component (4) comprises an extension bracket (401), one end of the extension bracket (401) is provided with an extension tail plate (402), and the extension tail plate (402) is arranged vertically to the extension bracket (401); The extended tail plate (402) is provided with a plurality of tail plate slots (404), a rotatable transmission wheel (405) is provided in the tail plate slot (404), and a transmission belt (406) is provided between the transmission wheel (405) and the transmission roller (305); A diagonal support bracket (403) is further provided between the extension bracket (401) and the movable inner frame (317).

7. According to claim 2, a large-area concrete underwater bottom sealing platform construction method, Its characteristics are: The grouting assembly (5) comprises a grouting slide (501), the grouting slide (501) is arranged on the extension bracket (401), and the grouting slide (501) is slidably connected to the extension bracket (401); A hopper (504) is provided above the grouting slide (501), winches (503) are provided on both sides of the hopper (504), and sliding connectors (502) are provided on the other two sides. The sliding connectors (502) are connected to the transmission belt (406) by bolts, and when the transmission belt (406) moves, it drives the grouting slide (501) to move; A flexible injection pipe (505) is provided at the bottom of the feeding hopper (504), and a bottom flange (506) is provided at the bottom end of the flexible injection pipe (505).

8. According to claim 2, a large-area concrete underwater bottom sealing platform construction method, Its characteristics are: The bottom sinking assembly (6) comprises a hard injection pipe (602), a top end of the hard injection pipe (602) is provided with a top flange (601), and the top flange (601) is used to be connected to the bottom flange (506); An outer cylinder (607) is provided below the hard injection tube (602), an inner cylinder (609) is provided inside the outer cylinder (607), a top hole (610) is provided at the top of the inner cylinder (609), the top hole (610) is connected to the hard injection tube (602), a bottom hole (611) is also provided at the bottom of the inner cylinder (609), and a plurality of branch pipes (608) are provided outside the outer cylinder (607).

9. A method for constructing a large-area concrete underwater bottom sealing platform according to claim 8, Its characteristics are: The outlet of the branch pipe (608) is lower than the bottom hole (611); A fixing rod (603) is further provided on one side of the hard injection tube (602), the fixing rod (603) being hinged to the hard injection tube (602), an outer tube floating ball (605) being provided on one side of the outer end of the fixing rod (603), the outer tube floating ball (605) and the fixing rod (603) being connected via a hard rod, a rope (604) being provided at one end inside the fixing rod (603), and an inner tube plug (606) being provided at the bottom end of the rope (604); A swing motor (613) is also provided above the fixed rod (603), and an electromagnetic pull rod (612) is provided on the swing motor (613). The electromagnetic pull rod (612) is used to adsorb the fixed rod (603).

10. A method for constructing a large-area concrete underwater bottom sealing platform according to claim 9, Its characteristics are: The average density of the floating ball (605) outside the pipe is between that of water and concrete, and the average density of the plug (606) inside the pipe is the same as that of concrete. The plug (606) inside the pipe has a shape of a conical top and a spherical bottom. The weight of the outer floating ball (605) is greater than the weight of the inner plug (606) plus the impact force of the concrete. When the concrete is poured to a preset elevation, the top surface of the concrete contacts the outer floating ball (605), the outer floating ball (605) is lifted, and the force is transmitted to the inner plug (606) along the hard rod. The inner plug (606) descends to the bottom hole (611) at the bottom of the inner tube (609) and blocks it.

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