Underwater foundation of building and construction method and construction equipment thereof

Abstract

The present invention provides an underwater foundation of a building and a construction method and construction equipment thereof, belonging to the technical field of buildings. The underwater foundation of the building includes a plurality of rotary bored piles, a cap, a pier, a cap outer mold caisson and a pier outer mold caisson, the cap is fixedly connected to the top of the plurality of rotary bored piles; the pier is fixedly connected to the top of the cap, and the upper part extends above the water surface; the cap outer mold caisson is arranged outside the cap; the pier outer mold caisson is arranged outside the pier. The construction method is used for the construction of the underwater foundation of the above-mentioned building. The construction equipment includes a construction platform and a continuous concrete pouring device arranged on the construction platform. The present invention forms a cap and a pier through a cap outer mold caisson and a pier outer mold caisson, and connects a certain number of rotary bored piles through the cap, which is conducive to improving the quality of pile foundation construction and the safety of the building, and is particularly suitable for the construction of water buildings such as wind power projects, bridges or drilling platforms.

Description

Technical Field

[0001] The present invention belongs to the technical field of buildings, and more specifically, relates to an underwater foundation of a building and a construction method and construction equipment thereof. Background Art

[0002] In some shallow waters, the foundations of water buildings such as wind power projects, bridges or drilling platforms usually adopt pile foundation structures, that is, piles are driven on the seabed or riverbed to form the foundation, and then the buildings are built. At present, more and more underwater pile foundations are constructed by rotary bored piles. However, with the increase in bearing capacity requirements, the pile diameter and pile length of rotary bored piles are also getting larger and larger. However, since hundreds of cubic meters of concrete need to be poured continuously, when pouring concrete directly into the hole with a pump truck or tank truck, the requirements for all aspects of construction are relatively high, especially the requirements for on-site dispatching capabilities are very high, which is prone to uneven pouring and intermittent material feeding, resulting in necking, mud or broken piles, affecting the construction quality of the bored piles. This leads to the fact that the size of the rotary bored piles is prone to quality problems. Directly using such large rotary bored piles as the foundation to build piers and upper buildings will pose a great safety hazard. Summary of the invention

[0003] The purpose of the present invention is to provide an underwater foundation for a building and a construction method and construction equipment thereof, so as to solve the technical problem in the prior art that directly using large-sized rotary bored piles as the foundation to build piers and upper buildings will pose great safety hazards.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an underwater foundation of a building, including a plurality of rotary bored cast-in-place piles, a cap, a pier, a cap outer mold caisson and a pier outer mold caisson, the cap is fixedly connected to the tops of the plurality of rotary bored cast-in-place piles; the pier is fixedly connected to the tops of the cap, and the upper part extends above the water surface; the cap outer mold caisson is arranged outside the cap; the pier outer mold caisson is arranged outside the pier.

[0005] To achieve the above object, the present invention also adopts a technical solution of providing a method for constructing the underwater foundation of the above building, comprising the following steps:

[0006] S100, determine the pile position, drive casing at the pile position and install the construction platform;

[0007] S200, using a rotary drilling rig to dig a pile hole along the casing, and pouring mud to solidify the wall;

[0008] S300, hanging a pile body steel cage into the pile hole, installing a concrete guide tube, and then pouring underwater concrete into the pile hole to form a rotary bored pile;

[0009] S400, processing the pile head of the rotary bored pile, lowering the cap outer formwork caisson prefabricated according to the shape of the cap, and then hanging the cap steel cage to the cap outer formwork caisson;

[0010] S500, lowering a pier column outer formwork caisson prefabricated according to the shape of the pier column, fixing the pier column outer formwork caisson on a construction platform, and then hanging a pier column steel reinforcement cage onto the pier column outer formwork caisson;

[0011] S600, install the concrete conduit so that the concrete conduit passes from the pier outer formwork caisson into the cap outer formwork caisson, and gradually pour underwater concrete into the cap outer formwork caisson and the pier outer formwork caisson to the top of the pier outer formwork caisson to form the cap and the pier.

[0012] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a construction equipment for the underwater foundation of the above-mentioned building, including a construction platform and a continuous concrete pouring device arranged on the construction platform, the continuous concrete pouring device includes a support body, a hopper, a pouring speed regulation assembly and a discharge pipe, the support body is arranged on the construction platform; the hopper is arranged on the support body; the pouring speed regulation assembly is arranged on the discharge port of the hopper; the discharge pipe is connected to the pouring speed regulation assembly and is connected to the concrete conduit.

[0013] In combination with the above technical solution, in a possible implementation, the perfusion speed regulating assembly is an auger perfusion speed regulating assembly, which is fixedly connected to the bracket body and is arranged at an angle.

[0014] In combination with the above technical solution, in a possible implementation, the perfusion speed regulation assembly includes an outer cylinder, a spiral shaft, a driver and a controller. The outer cylinder is connected to the bracket body, and one end is connected to the hopper for feeding, and the other end is connected to the discharge pipe for discharging; the spiral shaft is passed through the outer cylinder, and both ends extend to the outside of the outer cylinder, the spiral shaft and the outer cylinder are rotatably sealed, and the part located inside the outer cylinder is provided with spiral blades; the driver is connected to the bracket body, and the power output shaft is connected to one end of the spiral shaft to drive the spiral shaft to rotate; the controller is connected to the driver to control the speed and forward and reverse rotation of the driver.

[0015] In combination with the above technical solution, in a possible implementation method, the construction equipment of the underwater foundation of the building also includes an exhaust assembly, the exhaust assembly includes an air cylinder and an exhaust valve, the air cylinder is arranged on the outer cylinder, and the lower part is connected to the outer cylinder, and the upper part is provided with an exhaust pipe; the exhaust valve is arranged on the exhaust pipe.

[0016] In combination with the above technical solution, in a possible implementation, the exhaust assembly also includes an exhaust groove and a filter plate. The exhaust groove is arranged at the upper part of the outer tube along the main axis direction of the outer tube and extends from the lower end of the outer tube to the air storage cylinder; the filter plate is arranged on the exhaust groove.

[0017] In combination with the above technical scheme, in a possible implementation method, the exhaust assembly also includes an anti-condensation mechanism, and a connecting interface is provided at the lower end of the exhaust groove. The anti-condensation mechanism includes a clutch coupling, an air pump, an air inlet pipe, an air return pipe and a buffer air bag. The clutch coupling is connected to the outer cylinder or the bracket body, and is connected to the end of the spiral shaft; the air pump is connected to the clutch coupling or the bracket body, and is connected to the power output end of the clutch coupling; the air inlet pipe is connected to the air outlet end of the air pump, and is connected to the connecting interface; the air return pipe is connected to the air inlet end of the air pump, and is connected to the upper part of the air storage cylinder; the buffer air bag is arranged on the air inlet pipe.

[0018] In combination with the above technical solution, in a possible implementation method, a first three-way valve is provided on the air intake pipe, and the first three-way valve is used to connect the air pump with the connecting interface or to connect the air pump with the outside world; a second three-way valve is provided on the air return pipe, and the second three-way valve is used to connect the air pump with the upper part of the air cylinder or to connect the air pump with the outside world.

[0019] In combination with the above technical solution, in a possible implementation method, the exhaust assembly also includes a gas volume measuring mechanism, which includes a transparent cover, a float, a sliding rod and a marking body. The transparent cover is arranged on the top of the gas cylinder and is connected to the gas cylinder; the float is arranged in the gas cylinder; one end of the sliding rod is connected to the floating body, and the other end extends into the transparent cover; the marking body is connected to the other end of the sliding rod.

[0020] In combination with the above technical solution, in a possible implementation method, the hopper is also provided with a heightening retaining ring, which is detachably connected to the hopper, and an operating platform is provided on the hopper and the heightening retaining ring; the bracket body includes a hopper fixing section and a heightening section, the hopper fixing section is fixedly connected to the hopper and the perfusion speed regulation assembly, and the heightening section is detachably connected to the hopper fixing section.

[0021] The beneficial effect of the underwater foundation of the building provided by this embodiment is that compared with the prior art, the present invention forms a cap and a pier through a cap outer mold caisson and a pier outer mold caisson, and a certain number of rotary bored piles are connected through the cap to provide support for the building. There is no need to design the size of the rotary bored piles to be too large, which is beneficial to improving the quality of pile foundation construction and the safety of the building, and is particularly suitable for the construction of water buildings such as wind power projects, bridges or drilling platforms.

[0022] The beneficial effect of the method for constructing the underwater foundation of a building provided in this embodiment is that compared with the prior art, the present invention can realize the construction of the underwater foundation of the above-mentioned building through the above-mentioned steps, and can provide support for the building by connecting a certain number of rotary bored piles through the base, without designing the size of the rotary bored piles to be too large, which is beneficial to improving the quality of pile foundation construction and improving the safety of the building.

[0023] The beneficial effect of the construction equipment of the underwater foundation of the building provided by the present embodiment is that compared with the prior art, during construction, the present invention raises the hopper to a certain height through the support body, so that the concrete has a certain gravitational potential energy, and inserts the discharge pipe into the hole, and then transfers the concrete in the tank truck to the hopper through the hanging pipe or the pump truck, so that the hopper accumulates a certain amount of concrete, such as 20-40 cubic meters, and the pouring speed regulating component is used to control the pouring speed according to the amount of concrete in the hopper, so that the concrete can be poured into the hole continuously, evenly and stably; because the hopper plays the role of buffering incoming materials and increasing the potential energy of material discharge, timely incoming material compensation can make the concrete pour continuously, evenly and stably, without too fast or too slow material discharge, and without interruption, which can effectively reduce the difficulty of on-site scheduling, improve the quality of pile formation, and avoid necking, mud clamping or broken piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A schematic diagram of the structure of an underwater foundation of a building provided by an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the structure of a construction device for an underwater foundation of a building provided by an embodiment of the present invention;

[0027] Figure 3 A schematic structural diagram of a construction device for an underwater foundation of a building provided by another embodiment of the present invention;

[0028] Figure 4 A schematic cross-sectional view of a pouring speed regulating component of a construction equipment for an underwater foundation of a building provided by an embodiment of the present invention;

[0029] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle;

[0030] Figure 6 A schematic structural diagram of a construction device for an underwater foundation of a building provided in yet another embodiment of the present invention.

[0031] Among them, the reference numerals in the figures are as follows:

[0032] 10. Bracket body; 11. Hopper fixing section; 12. Heightening section;

[0033] 20. Hopper; 21. Heightening retaining ring; 22. Operating platform;

[0034] 30. Infusion speed regulating assembly; 31. Outer cylinder; 32. Screw shaft; 33. Driver; 34. Controller; 35. Damper;

[0035] 40. Feeding pipe;

[0036] 50. Exhaust assembly; 51. Air storage cylinder; 52. Exhaust valve; 53. Exhaust groove; 54. Filter plate;

[0037] 551, clutch coupling; 552, air pump; 553, air inlet pipe; 554, air return pipe; 555, buffer air bag;

[0038] 561, transparent cover; 562, floating body; 563, sliding rod; 564, marking body;

[0039] 61. Rotary bored cast-in-place piles; 62. Capping platform; 63. Pier column; 64. Capping platform outer formwork caisson; 65. Pier column outer formwork caisson. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0041] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0042] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0044] The underwater foundation of a building and its construction method and construction equipment provided by the present invention are now described.

[0045] like Figure 1 As shown, the first embodiment of the present invention provides an underwater foundation for a building, including a plurality of rotary bored cast-in-place piles 61, a cap 62, a pier 63, a cap outer mold caisson 64 and a pier outer mold caisson 65, the cap 62 is fixedly connected to the tops of the plurality of rotary bored cast-in-place piles 61; the pier 63 is fixedly connected to the tops of the cap 62, and the upper part extends above the water surface to support the building; the cap outer mold caisson 64 is arranged outside the cap 62; the pier outer mold caisson 65 is arranged outside the pier 63.

[0046] Compared with the prior art, the underwater foundation of the building provided in this embodiment forms a cap 62 and a pier 63 through a cap outer mold caisson 64 and a pier outer mold caisson 65, and a certain number of rotary bored piles 61 are connected through the cap 62 to provide support for the building. There is no need to design the size of the rotary bored piles 61 to be too large, which is beneficial to improving the quality of pile foundation construction and the safety of the building.

[0047] The second embodiment of the present invention provides a method for constructing the underwater foundation of the above-mentioned building, comprising the following steps:

[0048] S100, determine the pile position, drive casing at the pile position and install the construction platform;

[0049] S200, using a rotary drilling rig to dig a pile hole along the casing, and pouring mud to solidify the wall;

[0050] S300, hanging a pile body steel cage into the pile hole, installing a concrete guide tube, and then pouring underwater concrete into the pile hole to form a rotary bored pile;

[0051] S400, processing the pile head of the rotary bored pile, lowering the cap outer mold caisson 64 prefabricated according to the shape of the cap 62, and then hanging the cap steel cage to the cap outer mold caisson 64;

[0052] S500, lowering the pier column outer formwork caisson 65 prefabricated according to the shape of the pier column 63, fixing the pier column outer formwork caisson 65 on the construction platform, and then hanging the pier column steel reinforcement cage to the pier column outer formwork caisson 65;

[0053] S600, install the concrete conduit so that the concrete conduit passes from the pier outer formwork caisson 65 into the cap outer formwork caisson 64, and gradually pour underwater concrete into the cap outer formwork caisson 64 and the pier outer formwork caisson 65 to the top of the pier outer formwork caisson 65 to form the cap 62 and the pier 63.

[0054] Compared with the prior art, the method for constructing the underwater foundation of a building provided in this embodiment can realize the construction of the underwater foundation of the above-mentioned building through the above-mentioned steps, and can provide support for the building by connecting a certain number of rotary bored piles 61 through the base 62. There is no need to design the size of the rotary bored piles 61 to be too large, which is beneficial to improving the quality of pile foundation construction and the safety of the building.

[0055] like Figure 2 and Figure 3 As shown, the third embodiment of the present invention provides a construction equipment for an underwater foundation of a building, including a support body 10, a hopper 20, a pouring speed regulation assembly 30 and a discharge pipe 40. The support body 10 is arranged on a construction platform, and the hopper 20 is arranged on the support body 10; the pouring speed regulation assembly 30 is arranged on the discharge port of the hopper 20; the discharge pipe 40 is connected to the pouring speed regulation assembly 30 and is connected to a concrete conduit.

[0056] The perfusion speed regulating component 30 can be a valve component such as a gate valve, a pipe valve, etc., or can be other forms capable of controlling flow.

[0057] Compared with the prior art, the construction equipment for underwater foundation of a building provided in the present embodiment is as follows. During construction, the hopper 20 is raised to a certain height by the support body 10 so that the concrete has a certain gravitational potential energy, and the discharge pipe 40 is inserted into the hole. Then, the concrete in the tank truck is transferred to the hopper 20 by a hanging pipe or a pump truck, so that the hopper 20 accumulates a certain amount of concrete, such as 20-40 cubic meters, and the pouring speed regulating component 30 is used to control the pouring speed according to the amount of concrete in the hopper 20, so that the concrete can be poured into the hole continuously, evenly and stably. Since the hopper 20 plays the role of buffering incoming materials and increasing the potential energy of material discharge, timely incoming material compensation can make the concrete pour continuously, evenly and stably without too fast or too slow material discharge and without interruption, which can effectively reduce the difficulty of on-site scheduling, improve the quality of pile formation, and avoid the occurrence of necking, mud inclusion or broken piles.

[0058] like Figure 6 As shown, a specific implementation manner provided by the present invention based on the first implementation manner is as follows:

[0059] The hopper 20 is also provided with a heightened retaining ring 21 to increase the capacity of the hopper 20 . The heightened retaining ring 21 is detachably connected to the hopper 20 so as to be installed and removed as needed. An operating platform 22 is provided on the hopper 20 and the heightened retaining ring 21 to facilitate workers to observe the situation inside the hopper 20 .

[0060] The bracket body 10 includes a hopper fixing section 11 and a heightening section 12. A plurality of heightening sections 12 can be provided as needed. The hopper fixing section 11 is fixedly connected to the hopper 20 and the pouring speed regulating assembly 30 to form a whole, so as to play a certain protective role and prevent the hopper 20, the pouring speed regulating assembly 30 and the discharge pipe 40 from being damaged due to collision and the like during transportation. The heightening section 12 is detachably connected to the hopper fixing section 11, so as to be easily set up as needed and to facilitate turnover.

[0061] like Figures 3 to 5 As shown, a specific implementation mode provided by the present invention based on the first implementation mode is as follows:

[0062] The perfusion speed regulating assembly 30 is an auger perfusion speed regulating assembly, which is fixedly connected to the support body 10 and is arranged tilted.

[0063] The perfusion speed regulation assembly 30 includes an outer cylinder 31, a spiral shaft 32, a driver 33 and a controller 34. The outer cylinder 31 is connected to the bracket body 10, and one end is connected to the hopper 20 for feeding, and the other end is connected to the discharge pipe 40 for discharging; the spiral shaft 32 is passed through the outer cylinder 31, and both ends extend to the outside of the outer cylinder 31. The spiral shaft 32 and the outer cylinder 31 are rotatably sealed, and the part located in the outer cylinder 31 is provided with spiral blades; the driver 33 is connected to the bracket body 10, and the power output shaft is connected to one end of the spiral shaft 32 to drive the spiral shaft 32 to rotate; the controller 34 is connected to the driver 33 to control the speed and forward and reverse rotation of the driver 33.

[0064] Specifically and preferably, the driver 33 is a variable frequency reduction motor, and the controller 34 includes a PLC controller, a single chip microcomputer or an industrial computer electrically connected to the driver 33 .

[0065] When in use, concrete materials enter the outer cylinder 31 from the discharge port at the bottom of the hopper 20, and the operator controls the output power of the driver 33 through the controller 34, thereby controlling the forward and reverse rotation and speed of the screw shaft 32, thereby controlling the speed of the concrete materials passing through the outer cylinder 31, thereby keeping the concrete materials continuously, evenly and stably entering the hole from the discharge pipe 40.

[0066] Specifically, when pouring concrete materials with good fluidity, the screw shaft 32 can be controlled to rotate forward or reverse at a low speed to prevent the concrete materials from flowing downward too quickly; when the fluidity of the concrete materials deteriorates due to long-term waiting for materials or special materials, the screw shaft 32 can be controlled to rotate forward at a higher speed to increase the material discharge speed and ensure the continuity of pouring.

[0067] In order to improve the controllability of the material discharge speed, a damper 35 can be installed on the screw shaft 32. The damper 35 is connected to the outer cylinder 31 or the bracket body 10 to provide damping for the rotation of the screw shaft 32 to avoid significant changes in the rotation speed of the screw shaft 32 due to differences in material fluidity.

[0068] like Figures 3 to 5 As shown, in order to prevent the gas contained in the concrete from affecting the molding quality of the cast-in-place piles, the construction equipment of the underwater foundation of the building is also provided with an exhaust component 50, the exhaust component 50 includes an air storage cylinder 51 and an exhaust valve 52, the air storage cylinder 51 is arranged on the outer cylinder 31, and the lower part is connected to the outer cylinder 31, and the upper part is provided with an exhaust pipe; the exhaust valve 52 is arranged on the exhaust pipe.

[0069] At the beginning of pouring, the exhaust valve 52 is first opened to allow the concrete material to enter the gas cylinder 51, and then the exhaust valve 52 is closed; during the pouring process, the exhaust valve 52 is kept closed, so that the gas cylinder 51 becomes a closed space connected to the outer cylinder 31, and then the air in the concrete material is stirred by the spiral shaft 32, and after passing through the gas cylinder 51, it will gradually gather in the gas cylinder 51, so that the liquid level of the concrete material in the gas cylinder 51 gradually decreases; and after a certain amount of gas is accumulated in the gas cylinder 51, the exhaust valve 52 is opened to exhaust, so that the concrete material enters the gas cylinder 51 again, and then the exhaust valve 52 is closed, and this cycle is repeated until the pouring is completed.

[0070] Furthermore, in order to improve the exhaust efficiency, the exhaust component 50 also includes an exhaust groove 53 and a filter plate 54. The exhaust groove 53 is arranged at the upper part of the outer cylinder 31 along the main axis direction of the outer cylinder 31, and extends from the lower end of the outer cylinder 31 to a position higher than the concrete material in the gas storage cylinder 51 to prevent the concrete material in the gas storage cylinder 51 from being poured into the concrete material; the filter plate 54 is arranged on the exhaust groove 53, and also extends to a position higher than the concrete material in the gas storage cylinder 51 to prevent the concrete material in the gas storage cylinder 51 from being poured into the concrete material.

[0071] Specifically, the filter plate 54 can be a plate-shaped or strip-shaped filter structure composed of multiple layers of steel wire mesh, or a steel wire mesh with non-woven fabric or other filter materials sandwiched between them, or other wear-resistant forms that can filter out gas in concrete.

[0072] When in use, the air in the concrete material rises, contacts the filter plate 54, passes through the filter plate 54 and enters the exhaust groove 53, and finally gathers in the air storage cylinder 51; thus, most of the length of the outer cylinder 31 can be used for exhaust, which is beneficial to increase the exhaust contact surface of the concrete material, thereby improving the exhaust efficiency.

[0073] In order to accurately know the amount of concrete material in the gas cylinder 51, the exhaust assembly 50 also includes a gas volume measuring mechanism, which includes a transparent cover 561, a float 562, a slide bar 563 and a marking body 564. The transparent cover 561 is arranged on the top of the gas cylinder 51 and is connected to the gas cylinder 51; the float 562 is arranged in the gas cylinder 51; one end of the slide bar 563 is connected to the float 562, and the other end extends into the transparent cover 561; the marking body 564 is connected to the other end of the slide bar 563.

[0074] The float 562 can float on the liquid surface of the concrete material in the gas storage cylinder 51, and drive the marking body 564 to move up and down in the transparent cover 561 through the sliding rod 563, so that the operator can observe the remaining amount of concrete material in the gas storage cylinder 51 through the marking body 564 in the transparent cover 561, so as to open the exhaust valve 52 in time to exhaust.

[0075] In order to prevent the consolidation of concrete from affecting its use during long-term use, the float 562 can adopt a float structure with a non-stick coating on the surface to reduce the possibility of concrete adhering to the float 562; at the same time, the float can also be a piston structure sealed with the inner wall of the air storage cylinder 51 to play a certain sealing role on the concrete material.

[0076] Since a small amount of slurry in the concrete will enter the exhaust groove 53 through the filter plate 54 when filtering out the air, in order to prevent the slurry from solidifying in the exhaust groove 53 and causing blockage, the exhaust assembly 50 also includes an anti-condensation mechanism. A connecting interface is provided at the lower end of the exhaust groove 53. The anti-condensation mechanism includes a clutch coupling 551, an air pump 552, an air inlet pipe 553, an air return pipe 554 and a buffer air bag 555. The clutch coupling 551 is connected to the outer cylinder 31 or the bracket body 10, and is connected to the end of the spiral shaft 32; the air pump 552 is connected to the clutch coupling 551 or the bracket body 10, and is connected to the power output end of the clutch coupling 551; the air inlet pipe 553 is connected to the air outlet end of the air pump 552, and is connected to the connecting interface; the air return pipe 554 is connected to the air inlet end of the air pump 552, and is connected to the upper part of the air storage cylinder 51; the buffer air bag 555 is arranged on the air inlet pipe 553. The clutch coupling 551 is a coupling that can connect and separate the shafts at both ends by manual or automatic operation.

[0077] When in use, the air pump 552 is connected to the end of the screw shaft 32 using the clutch coupling 551 as needed, so that the screw shaft 32 can drive the air pump 552 to operate, allowing air to circulate in the air pump 552, the air inlet pipe 553, the exhaust groove 53, the return air pipe 554 and the buffer air bag 555, and the slurry in the exhaust groove 53 is blown into the air storage cylinder 51.

[0078] Since the slurry is relatively heavy, after being blown into the air storage cylinder 51, it will gradually settle, and only a small amount will enter the return air pipe 554; in order to prevent the slurry from entering the return air pipe 554 and affecting the operation of the air pump, a baffle can be set at the outlet of the exhaust groove 53 to prevent the slurry at the outlet of the exhaust groove 53 from directly entering the return air pipe 554, and a filter material can also be set on the return air pipe 554 or in the buffer air bag 555 for filtering.

[0079] Furthermore, in order to improve the exhaust efficiency of the air cylinder 51 and avoid back suction at the exhaust valve 52 during low-speed filling, a first three-way valve is provided on the air inlet pipe 553, and the first three-way valve is used to connect the air pump 552 with the connecting interface or to connect the air pump 552 with the outside world; a second three-way valve is provided on the return air pipe 554, and the second three-way valve is used to connect the air pump 552 with the upper part of the air cylinder 51 or to connect the air pump 552 with the outside world.

[0080] When negative pressure is generated at the air storage cylinder 51, the first three-way valve of the air intake pipe 553 can be used to connect the air pump 552 with the outside, and the second three-way valve on the air return pipe 554 can be used to connect the air pump 552 with the upper part of the air storage cylinder 51, and the exhaust valve 52 is kept closed. At this time, the air intake pipe 553 and the connecting interface are in a closed state, and the gas in the air storage cylinder 51 can be discharged through the first three-way valve of the air intake pipe 553 by using the suction force of the air pump 552;

[0081] When the pouring process is slow and the concrete material in the air storage cylinder 51 is retained for a long time, in order to prevent the concrete material in the air storage cylinder 51 from solidifying, the first three-way valve of the air inlet pipe 553 can be used to connect the air pump 552 with the connecting interface, and the second three-way valve on the return pipe 554 can be used to connect the air pump 552 with the outside world, and the exhaust valve 52 is kept closed. At this time, the return pipe 554 and the upper part of the air storage cylinder 51 are in a closed state, and the pumping capacity of the air pump 552 can be used to inhale air from the outside world at the second three-way valve on the return pipe 554 and pump it into the air storage cylinder 51, so that the concrete material in the air storage cylinder 51 is pressed into the outer cylinder 31 and poured into the pile hole. After a period of time, the fresh concrete material is introduced into the air storage cylinder 51 by exhausting the air storage cylinder 51.

[0082] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction device for underwater foundation of a building, characterized in that: It comprises a construction platform and a continuous concrete pouring device arranged on the construction platform, and the continuous concrete pouring device comprises: A support body (10) is arranged on the construction platform; A hopper (20) is arranged on the support body (10); A pouring speed regulating component (30) is arranged on the discharge port of the hopper (20); A feed pipe (40) connected to the pouring speed regulating assembly (30) and to the concrete conduit; The perfusion speed regulating component (30) is an auger perfusion speed regulating component, which is fixedly connected to the support body (10) and arranged in an inclined manner; the perfusion speed regulating component (30) comprises: An outer cylinder (31) is connected to the support body (10), one end of which is connected to the hopper (20) for feeding, and the other end of which is connected to the discharge pipe (40) for discharging; A spiral shaft (32) is inserted into the outer cylinder (31) and has two ends extending to the outside of the outer cylinder (31). The spiral shaft (32) and the outer cylinder (31) are rotatably sealed and matched, and a portion located inside the outer cylinder (31) is provided with spiral blades. A driver (33) is connected to the support body (10), and a power output shaft is connected to one end of the screw shaft (32) to drive the screw shaft (32) to rotate; A controller (34) connected to the driver (33) to control the speed and forward and reverse rotation of the driver (33); The construction equipment for the underwater foundation of a building further comprises an exhaust assembly (50), wherein the exhaust assembly (50) comprises: An air storage cylinder (51) is arranged on the outer cylinder (31), the lower part of which is in communication with the outer cylinder (31) and the upper part of which is provided with an exhaust pipe; An exhaust valve (52) is arranged on the exhaust pipe; The exhaust assembly (50) further comprises: An exhaust groove (53) is provided at the upper portion of the outer cylinder (31) along the main axis direction of the outer cylinder (31) and extends from the lower end of the outer cylinder (31) into the air storage cylinder (51); A filter plate (54) is arranged on the exhaust groove (53); The exhaust assembly (50) further comprises an anti-coagulation mechanism, a communication interface is provided at the lower end of the exhaust groove (53), and the anti-coagulation mechanism comprises: A clutch coupling (551) connected to the outer cylinder (31) or the bracket body (10), and connected to the end of the spiral shaft (32); An air pump (552) connected to the clutch coupling (551) or the bracket body (10), and connected to the power output end of the clutch coupling (551); An air inlet pipe (553) connected to the air outlet end of the air pump (552) and connected to the communication interface; An air return pipe (554) connected to the air inlet end of the air pump (552) and in communication with the upper portion of the air storage cylinder (51); The buffer air bag (555) is arranged on the air inlet pipe (553).

2. The construction equipment for underwater foundation of a building according to claim 1, characterized in that: The air inlet pipe (553) is provided with a first three-way valve, and the first three-way valve is used to connect the air pump (552) with the connecting interface or connect the air pump (552) with the outside world; the air return pipe (554) is provided with a second three-way valve, and the second three-way valve is used to connect the air pump (552) with the upper part of the air storage cylinder (51) or connect the air pump (552) with the outside world.

3. The construction equipment for underwater foundation of a building according to claim 1, characterized in that: The exhaust assembly (50) further comprises an air volume measuring mechanism, wherein the air volume measuring mechanism comprises: A transparent cover (561) is disposed on the top of the gas storage cylinder (51) and is in communication with the gas storage cylinder (51); A floating body (562) is arranged in the gas storage cylinder (51); A sliding rod (563), one end of which is connected to the floating body (562), and the other end of which extends into the transparent cover (561); The marking body (564) is connected to the other end of the sliding rod (563).

4. The construction equipment for underwater foundation of a building according to claim 1, characterized in that: The hopper (20) is also provided with a heightened retaining ring (21), the heightened retaining ring (21) is detachably connected to the hopper (20), and an operating platform (22) is provided on both the hopper (20) and the heightened retaining ring (21); the support body (10) comprises a hopper fixing section (11) and a heightened section (12), the hopper fixing section (11) is fixedly connected to the hopper (20) and the pouring speed regulating assembly (30), and the heightened section (12) is detachably connected to the hopper fixing section (11).

5. An underwater foundation of a building, characterized in that: The underwater foundation of a building is constructed using the construction equipment of any one of claims 1 to 4, comprising: A plurality of rotary bored piles (61); A cap (62) is fixedly connected to the tops of a plurality of the rotary bored piles (61); A pier column (63) is fixedly connected to the top of the pedestal (62), and the upper part of the pier column extends above the water surface; A capping platform outer mold caisson (64) is arranged outside the capping platform (62); The pier outer mold caisson (65) is arranged outside the pier (63).

6. A method for constructing an underwater foundation of a building, characterized in that: The construction method using the construction equipment of the underwater foundation of a building as claimed in any one of claims 1 to 4 comprises the following steps: S100, determine the pile position, drive casing at the pile position and install the construction platform; S200, using a rotary drilling rig to dig a pile hole along the casing, and pouring mud to solidify the wall; S300, hanging a pile body steel cage into the pile hole, installing a concrete guide tube, and then pouring underwater concrete into the pile hole to form a rotary bored pile; S400, processing the pile head of the rotary bored pile, lowering the cap outer mold caisson (64) prefabricated according to the shape of the cap (62), and then hanging the cap steel cage to the cap outer mold caisson (64); S500, lowering a pier column outer formwork caisson (65) prefabricated according to the shape of the pier column (63), fixing the pier column outer formwork caisson (65) on a construction platform, and then hanging a pier column reinforcement cage onto the pier column outer formwork caisson (65); S600, installing a concrete conduit so that the concrete conduit passes from the pier outer formwork caisson (65) into the cap outer formwork caisson (64), and gradually pouring underwater concrete into the cap outer formwork caisson (64) and the pier outer formwork caisson (65) to the top of the pier outer formwork caisson (65), so as to form the cap (62) and the pier (63).

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