Lattice column pile concrete pouring construction system based on ultra-deep pile foundation

Abstract

The invention discloses a latticed column pile concrete pouring construction system based on an ultra-deep pile foundation, which comprises a steel casing inserted into a pile hole, a reinforcement cage mounted at the bottom of the pile hole, a latticed column with the bottom end inserted into the reinforcement cage, a winch arranged on the periphery of an orifice of the pile hole, a pumping pipe for conveying concrete into the pile hole, a guide rail, a guide frame and a guide rope wheel, a pulling rope and a self-vibration pouring pipe; the natural vibration pouring pipe comprises a guide section, a vibration section and a vibration section which are sequentially connected from top to bottom, a plurality of blocking pieces which are evenly arranged in a staggered mode in the annular direction are arranged in a pipeline of the vibration section from top to bottom at intervals, and concrete conveyed into the vibration section impacts the blocking pieces to sequentially drive the vibration section and the vibration section inserted into the concrete to continuously vibrate. The problems that when concrete is poured into a latticed column pile of an ultra-deep pile foundation through a guide pipe, the guide pipe is prone to being clamped when the guide pipe is lowered and lifted, concrete pouring is uneven, and cavities are prone to being formed are solved.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, specifically relating to a lattice column pile concrete pouring construction system based on ultra-deep pile foundations. Background Technology

[0002] Existing lattice columns, such as Figure 1 As shown, it is made of welded and fixed members and gusset plates. The members can be made of angle steel, I-beams or channel steel, and the gusset plates are steel plates. The most common lattice column is made of four angle steels welded together with steel plates and reinforced with internal welded partitions.

[0003] When constructing lattice column piles, such as Figure 2 As shown, the process involves first drilling a hole using a rotary drilling rig, then lowering a steel casing. Next, the lattice column is lifted, and the reinforcing cage is welded to the bottom of the column. This cage is then lowered into the designed position inside the steel casing. Finally, a concrete tremie pipe is lowered to the bottom of the reinforcing cage for concrete pouring. During concrete pouring, the tremie pipe needs to be raised and embedded 2-6 meters into the concrete. Due to the limited space inside the pile hole, the following problems typically arise when pouring concrete through the tremie pipe:

[0004] First, when lowering the guide pipe, it needs to pass through the inside of the lattice column and be lowered to the designed position at the bottom of the steel cage. Because the space inside the lattice column is narrow and there are partitions, it is difficult to lower the guide pipe smoothly. It is necessary to frequently pull and swing the guide pipe for adjustment, which reduces construction efficiency and poses a certain risk of pipe jamming.

[0005] Secondly, during concrete pouring, the reverse impact force of the pumped concrete can significantly disturb the tail of the pipe, thereby compromising the verticality of the guide pipe. When lifting the guide pipe, the tail of the pipe is prone to scraping against the lattice column or reinforcing cage, which can also lead to pipe jamming in severe cases, preventing further concrete pouring and causing pile breakage. In particular, when the guide pipe is lifted to the junction of the lattice column and the reinforcing cage, the vertical space suddenly becomes smaller, making the tail of the pipe more prone to jamming.

[0006] Third, due to the narrow space inside the pile hole, when pouring to the location of the lattice column, especially at the junction of the lattice column and the reinforcing cage, the lattice column and the reinforcing cage will hinder the flow of concrete. Not only is it difficult to pour the concrete aggregate evenly, but it also cannot fully fill the narrow cavity, thus forming voids and reducing the quality of pouring.

[0007] In the construction of lattice column piles for ultra-deep pile foundations, since the pile hole depth can usually reach more than 90 meters, a longer tremie pipe is required for pouring. At this time, the tremie pipe needs to be extended by connecting multiple sections of pipe through flanges. With the tremie pipe being longer and the diameter of the flange connection suddenly increasing, the lowering and lifting of the tremie pipe will be more difficult to control and more prone to pipe jamming. Based on this, this application proposes a lattice column pile concrete pouring construction system based on ultra-deep pile foundations to solve the problems of easy pipe jamming during the lowering and lifting of the tremie pipe, as well as uneven concrete pouring and easy formation of voids when pouring concrete through the tremie pipe. Summary of the Invention

[0008] Based on the problems mentioned in the background art, this application provides a lattice column pile concrete pouring construction system based on ultra-deep pile foundations, which solves the problems of easy pipe jamming during the lowering and lifting of the tremie pipe, as well as uneven concrete pouring and easy formation of voids when pouring concrete for lattice column piles in ultra-deep pile foundations.

[0009] The present invention is achieved through the following technical solution.

[0010] A lattice column pile concrete pouring construction system based on ultra-deep pile foundations includes a steel casing inserted into the pile hole, a reinforcing cage installed at the bottom of the pile hole, a lattice column with its bottom end inserted into the reinforcing cage, a winch set around the pile hole opening, and a pumping pipe for conveying concrete into the pile hole. The system is characterized by further comprising:

[0011] The guide rail is fixed along the length of the lattice column in the cavity through which the lattice column and the reinforcing cage pass.

[0012] The guide frame is connected to the free end of the winch rope and can slide freely up and down along the guide rail.

[0013] A rope winding wheel is disposed at the end of the guide rail;

[0014] A traction rope, one end of which is connected to a guide frame, and the other end extends past a rope wheel to the opening of the pile hole to form a traction end;

[0015] The self-vibrating casting pipe includes a guide section, a vibration section, and a compaction section connected sequentially from top to bottom. The upper end of the guide section is connected to the discharge port of the pumping pipe. The self-vibrating casting pipe is installed on a guide frame through the guide section. Several baffles are arranged in a uniformly staggered circumferential direction at intervals from top to bottom inside the pipe of the vibration section. The concrete delivered to the vibration section impacts the baffles, which in turn drive the vibration section and the compaction section inserted into the concrete to vibrate continuously.

[0016] Preferably, the present invention further includes:

[0017] Rope threading holes are provided on the guide frame;

[0018] A limiting ball with a diameter larger than the diameter of the rope-threading hole;

[0019] The extension rope connected to the limit ball;

[0020] One end of the traction rope passes through the rope hole from bottom to top and extends to the opening of the pile hole to connect with the limiting ball to form the recovery end. The other end goes around the rope wheel and extends upward to the opening of the pile hole to form the traction end.

[0021] Preferably, the guide rail includes two steel rails, which are fixed parallel to each other along the axis of the pile hole and in the cavity through which the lattice column and the reinforcing cage pass.

[0022] Preferably, the rails are plain round steel bars with a diameter of 14-22mm, and the two rails are fixed to the steel cage or lattice column by welding the opposite sides of the rails with threaded bars.

[0023] Preferably, the guide frame includes a casting pipe sleeve inserted and sleeved outside the guide section. Multiple side support rods are provided on both sides of the casting pipe sleeve. The outer ends of the side support rods are connected to U-shaped limiting grooves. A pulley is rotatably installed in the groove of the U-shaped limiting groove. Two steel rails are respectively embedded in the grooves of the U-shaped limiting grooves on both sides and slide in contact with the pulleys.

[0024] Preferably, the side support rod includes a fixed rod, one end of which is fixedly connected to the side wall of the casting pipe sleeve, and the other end is provided with a sliding groove. A telescopic rod is slidably inserted into the sliding groove, and the outer end of the telescopic rod is connected to a U-shaped limiting groove. A spring is sleeved on the outside of the telescopic rod, one end of which is fixedly connected to the end of the fixed rod, and the other end is fixedly connected to the bottom of the U-shaped limiting groove.

[0025] Preferably, the vibration section includes a plurality of vibration segments connected sequentially from top to bottom. Each vibration segment includes an elastic hose, a spring that loops around the elastic hose and is fixedly connected to the upper and lower ends of the elastic hose, and a vibrating rigid tube connected to the lower end of the elastic hose. The blocking plate is disposed inside the vibrating rigid tube to partially block the conveying channel of the vibrating rigid tube.

[0026] Preferably, the self-vibrating casting pipe also includes a connecting pipe, the upper end of which is connected to the guide section and the lower end of which is connected to the vibration section. The diameter of the connecting pipe gradually decreases, the diameter of the vibration section and the tamping section are the same, and the diameter of the guide section is larger than that of the vibration section.

[0027] Preferably, the guide section includes an upper guide pipe, an expansion pipe, and a lower guide pipe connected sequentially from top to bottom. The upper and lower guide pipes are rigid pipes, and the expansion pipe is a flexible hose. A barrier ring is fitted on the inner wall of the pipe opening where the lower guide pipe connects to the expansion pipe. The diameter of the cavity inside the barrier ring gradually decreases along the concrete conveying direction.

[0028] Preferably, the vibrating plate is inclined downwards from the inside of the tube to the outside of the tube, with an inclination angle of 30-40°.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1) In this invention, the guide rail formed by welding plain round steel bars with threaded bars can not only serve as part of the internal support system of the lattice column to improve the strength of the lattice column pile, but also enhance the connection strength between the lattice column and the steel cage to ensure that the steel cage and the lattice column as a whole can be smoothly aligned and lowered into the pile hole.

[0031] 2) When the pumping pipe is lowered or raised, the self-vibrating casting pipe and the pumping pipe of the present invention are always in a straight state in the cavity through which the lattice column and the steel cage are connected, and there will be no pipe jamming, which helps to improve construction efficiency.

[0032] 3) In this invention, the concrete impact barrier plate delivered to the vibration section is cleverly utilized. No additional power is required. The barrier plate can drive the vibration section and the vibrating section inserted into the concrete to vibrate continuously, so as to vibrate the concrete and prevent uneven concrete pouring and the formation of voids. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of a lattice column in the prior art;

[0034] Figure 2 This is a schematic diagram of the casting construction of lattice column piles in the existing technology;

[0035] Figure 3 This is a schematic diagram of the main structure of the present invention;

[0036] Figure 4 A schematic diagram of the main structure for installing a self-vibrating casting pipe on a guide frame;

[0037] Figure 5 for Figure 4 Cross-sectional view at point AA;

[0038] Figure 6 for Figure 4 Sectional view at point BB;

[0039] Figure 7 Front view of the self-vibrating casting pipe installed on the guide frame;

[0040] Figure 8 for Figure 7 Cross-sectional view at point CC (rail embedded in U-shaped limiting groove);

[0041] Figure 9 This is the front view of the self-vibrating cast-in-place pipe;

[0042] Figure 10 This is a schematic diagram showing the distribution of the barrier sheets;

[0043] Figure 11 A schematic diagram showing the lowering of the guide frame and the self-vibrating casting pipe using a traction rope.

[0044] Figure 12 A schematic diagram showing the guide rail installed in the lattice column and the through cavity of the reinforcing cage;

[0045] Figure 13 A schematic diagram showing the hoisting and lowering of the lattice column and the reinforcing cage;

[0046] Figure 14 A schematic diagram for extending and retrieving the traction rope;

[0047] Figure 15 A schematic diagram showing the guide frame and pouring pipe sleeve being lowered to the designed position inside the pile hole;

[0048] Figure 16 This is a schematic diagram illustrating the use of this system for concrete pouring.

[0049] The meanings of the labels in the above figures are as follows: 1. Pile hole; 2. Steel casing; 3. Lattice column; 4. Reinforcing cage; 5. Pumping pipe; 6. Guide rail; 601. Rail; 7. Guide frame; 701. Casting pipe sleeve; 702. Side support rod; 7021. Fixed rod; 7022. Telescopic rod; 7022. U-shaped limiting groove; 703. Pulley; 704. Self-vibrating casting pipe; 8. Guide section; 801. Upper guide pipe; 8011. Expansion pipe; 8012. Lower guide pipe; 8013. Barrier ring; 8014. Vibrating section; 802. Elastic hose; 8021. Spring; 8022. Vibrating rigid pipe; 8023. Vibrating section; 803. Barrier plate; 804. Connecting pipe; 805. Traction rope; 9. Rope wheel; 10. Rope hole; 11. Limiting ball; 12. Extension rope; 13. Flange; 14. Winch; 15. Lid; 16. Connecting plate; 17. Partition plate; 18.

[0050] Specific real-time methods

[0051] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the following embodiments are merely illustrative examples of the present invention, and the scope of protection of the present invention is not limited thereto. The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] Example 1

[0053] This embodiment provides a lattice column pile concrete pouring construction system based on ultra-deep pile foundations. Please refer to [link to relevant documentation]. Figures 3 to 15 ,include:

[0054] A steel casing 2 is inserted into pile hole 1;

[0055] The reinforcing cage 4 is installed at the bottom of pile hole 1;

[0056] The bottom end of the lattice column 3 is inserted into the steel cage 4;

[0057] A winch 15 is installed around the opening of pile hole 1;

[0058] Pumping pipe 5 is used to deliver concrete into pile hole 1;

[0059] Guide rail 6, which is fixed along the axis of pile hole 1 in the cavity through which the lattice column 3 and the steel cage 4 pass.

[0060] Guide frame 7 is connected to the free end of the rope of winch 15 and can slide freely up and down along guide rail 6;

[0061] A rope winding wheel 10 is disposed at the end of the guide rail 6;

[0062] The traction rope 9 has one end connected to the guide frame 7 and the other end extending past the rope wheel 10 to the opening of the pile hole 1 to form a traction end.

[0063] The self-vibrating pouring pipe 8 includes a guide section 801, a vibration section 802, and a compaction section 803 connected sequentially from top to bottom. The upper end of the guide section 801 is connected to the discharge port of the pumping pipe 5. The self-vibrating pouring pipe 8 is installed on the guide frame 7 through the guide section 801 so that the self-vibrating pouring pipe 8 can slide freely up and down along the guide rail 6 with the guide frame 7. Several baffles 804 are arranged in a uniformly staggered circumferential direction from top to bottom inside the pipe of the vibration section 802. The concrete impact baffles 804 delivered to the vibration section 802 will drive the vibration section 802 and the compaction section 803 inserted into the concrete to vibrate continuously.

[0064] In the above structure, the steel casing 2, the reinforcing cage 4, and the lattice column 3 are conventional structures in the construction of lattice column piles, which can be implemented according to construction needs or general design requirements of building engineering; the pumping pipe 5 is a three-layer composite hose, with an inner polyurethane wear-resistant layer, a middle stainless steel wire braided layer, and an outer anti-static TPU layer; the rope wheel 10 is a steel wheel with a diameter of 5-10cm, which is fixed to the end of the guide rail 6 by a bracket; the traction rope 9 is a thin steel wire rope with a diameter of 3-6mm; the vibrating section 803 is a stainless steel pipe with a pressure resistance rating of PN16; the upper end of the guide section 801 can be detachably connected to the discharge port of the pumping pipe 5 through the flange 14; the length of the guide section 801 is 2-3m, the length of the vibrating section 802 is 2-3m, and the length of the vibrating section 803 is 3-4m;

[0065] In this invention, the guide rail 6 is fixed along the axis of the pile hole 1 within the cavity through which the lattice column 3 and the reinforcing cage 4 pass. Please refer to [link / reference]. Figure 3 and Figure 11During the lowering of the pipe, the traction end of the traction rope 9 is pulled. Through the combined traction of the traction rope 9 and the rope wheel 10, and utilizing the self-weight of the self-vibrating pouring pipe 8 and the guide frame 7, the self-vibrating pouring pipe 8 at the tail end will slide downwards along the guide rail 6 to the designed position, following the guide frame 7. Simultaneously, the pumping pipe 5 is slowly lowered into the pile hole opening, and the pumping pipe 5 is kept straight. The self-vibrating pouring pipe 8 and the pumping pipe 5 remain straight throughout the cavity connecting the lattice column 3 and the reinforcing cage 4. The self-vibrating pouring pipe 8 and the pumping pipe 5 can be lowered into place in one go without repeated pulling and adjustment, preventing pipe jamming. Similarly, when pouring concrete to lift the pipe, please refer to... Figure 16 The guide frame 7 is raised by the rope traction of the winch, and the self-vibrating pouring pipe 8 follows the guide frame 7 and is lifted upward along the guide rail 6. Simultaneously, the pumping pipe 5 is wound up, keeping it in a straight state. The self-vibrating pouring pipe 8 and the pumping pipe 5 remain straight throughout the cavity connecting the lattice column 3 and the reinforcing cage 4, preventing pipe jamming. When pouring concrete, please refer to... Figure 4 , Figure 6 , Figure 7 and Figure 9 The concrete impact barrier 804, which is conveyed to the vibrating section 802, drives the vibrating section 802 and the vibrating section 803 inserted into the concrete to vibrate continuously, so as to vibrate the concrete and prevent uneven concrete pouring and the formation of voids.

[0066] Furthermore, in a preferred embodiment, please refer to... Figure 11 and Figure 14 The present invention also includes:

[0067] Rope threading hole 11 is provided on guide frame 7;

[0068] A limiting ball 12 with a diameter larger than the diameter of the rope hole 11;

[0069] Extension rope 13 connected to the limiting ball 12;

[0070] One end of the traction rope 9 extends from bottom to top through the rope hole 11 to the opening of the pile hole 1 and connects with the limiting ball 12 to form a recovery end. The other end extends upward around the rope wheel 10 to the opening of the pile hole 1 to form a traction end. The diameter of the rope hole 11 is larger than that of the traction rope 9, and the extension rope 13 is a nylon rope with a diameter of 3-10mm.

[0071] Based on the above structural configuration, since the limiting ball 12 cannot pass through the rope hole 11, when the traction rope 9 is pulled and the extension rope 13 is lowered simultaneously, the cooperation of the traction rope 9, the limiting ball 12 and the rope hole 11 can provide a downward pulling force to the guide frame 7. Recording the length of the traction rope 9 pulled out of the pile hole or the length of the extension rope 13 inserted into the pile hole can more quickly determine whether the guide frame 7 has moved to the design position. After the guide frame 7 slides down to the design position, the winch 15 is turned off and the extension rope 13 is pulled outward. The extension rope 13, the traction rope 9 and the limiting ball 12 can be retrieved and reused. At the same time, it can prevent the extension rope 13 and the traction rope 9 from being left in the pile hole and affecting the concrete pouring quality.

[0072] In this invention, the guide rail needs to be fixedly installed in the cavity through which the lattice column 3 and the reinforcing cage 4 pass vertically. Therefore, after the concrete is poured, the guide rail will remain inside the pile. To avoid the guide rail having an adverse effect on the quality of the lattice column pile, further, in a preferred embodiment, please refer to... Figure 3 , Figure 11 and Figure 12 The guide rail 6 includes two steel rails 601, which are fixed parallel to each other along the length of the lattice column 3 and the cavity through which the reinforcing cage 4 passes. Specifically, the steel rails 601 are plain round steel bars with a diameter of 14-22mm. The opposite sides of the two steel rails 601 are fixed to the reinforcing cage 4 or the lattice column 3 by welding with threaded bars. Based on this setting, without affecting the sliding of the guide frame 7 along the guide rail, the guide rail formed by welding the plain round steel bars with threaded bars can serve as part of the internal support system of the lattice column. In addition, since the reinforcing cage must be connected and fixed to the lattice column before it is lifted and lowered, the guide rail can also enhance the connection strength between the lattice column and the reinforcing cage, ensuring that the reinforcing cage and the lattice column as a whole can be smoothly aligned and lowered into the pile hole.

[0073] Furthermore, in a preferred embodiment, please refer to... Figure 4 , Figure 5 , Figure 7 and Figure 8The guide frame 7 includes a casting pipe sleeve 701 that is inserted and fitted onto the outside of the guide section 801. Multiple side support rods 702 are provided on both sides of the casting pipe sleeve 701. The outer ends of the side support rods 702 are connected to U-shaped limiting grooves 703. A pulley 704 is rotatably installed in the opening of the U-shaped limiting groove 703. Two steel rails 601 are respectively embedded in the openings of the U-shaped limiting grooves 703 on both sides and slide in contact with the pulleys 704. The limiting effect of the U-shaped limiting grooves 703 ensures that the guide frame 7 will not slip off the steel rails 601. Preferably, the inner diameter of the casting pipe sleeve 701 is 1-3 mm larger than the outer diameter of the self-vibrating casting pipe 8, allowing the self-vibrating casting pipe 8 to be inserted entirely into the casting pipe sleeve 701 from top to bottom until the casting pipe sleeve 701 is inserted and fitted onto the outside of the guide section 801, and guided... The flange 14 at the upper end of section 801 is limited and suspended on the casting pipe sleeve 701; preferably, the side support rod 702 includes a fixed rod 7021, one end of the fixed rod 7021 is fixedly connected to the side wall of the casting pipe sleeve 701, and the other end has a sliding groove. A telescopic rod 7022 is slidably inserted in the sliding groove. The outer end of the telescopic rod 7022 is connected to a U-shaped limiting groove 703. A spring is sleeved on the outside of the telescopic rod 7022. One end of the spring is fixedly connected to the end of the fixed rod 7021, and the other end is fixedly connected to the bottom of the U-shaped limiting groove 703. Based on this, through the cooperation of the telescopic rod 7022, the fixed rod 7021 and the spring, the pulleys 704 on both sides can adapt to a certain range of spacing changes between the two rails 601. In addition, it can also buffer the vibration transmitted from the self-vibrating casting pipe 8 to the rails 601.

[0074] Furthermore, in a preferred embodiment, please refer to... Figure 4 , Figure 7 and Figure 9 The vibrating section 802 includes multiple vibrating segments connected sequentially from top to bottom. Each vibrating segment includes an elastic hose 8021, a spring 8022 that loops around the elastic hose 8021 and is fixedly connected to its upper and lower ends, and a vibrating rigid tube 8023 connected to the lower end of the elastic hose 8021. A blocking plate 804 is disposed within the vibrating rigid tube 8023 to partially block the conveying channel of the vibrating rigid tube 8023. Based on this arrangement, through the cooperation of the elastic hose 8021 and the spring 8022, the vibration of the vibrating rigid tube 8023 can be restricted without affecting the concrete conveying process. The vibration amplitude in both horizontal and vertical directions, as well as the reciprocating vibration of the vibrating rigid pipe 8023, are achieved. In addition, the baffles 804 of each vibrating section are arranged at intervals from top to bottom and uniformly staggered along the circumference. Therefore, each baffle 804 can be continuously and effectively impacted by the concrete without affecting each other. Furthermore, by setting multiple vibrating sections, the vibrations of each vibrating section are superimposed to generate resonance, which in turn drives the vibrating section 803 embedded in the concrete to generate high-frequency vibration, vibrating the concrete and preventing uneven concrete pouring and the formation of voids. Under normal circumstances, setting 2-4 vibrating sections in the vibrating section 802 is sufficient to meet the construction requirements.

[0075] Furthermore, in a preferred embodiment, please refer to... Figure 4 , Figure 9 The self-vibrating casting pipe 8 also includes a connecting pipe 805. The upper end of the connecting pipe 805 is connected to the guide section 801, and the lower end is connected to the vibration section 802. The diameter of the connecting pipe 805 gradually decreases. The diameters of the vibration section 802 and the tamping section 803 are the same, and the diameter of the guide section 801 is larger than that of the vibration section 802. Based on this configuration, the self-vibrating casting pipe 8 can be inserted more smoothly from top to bottom into the casting pipe sleeve 701. At the same time, when the self-vibrating casting pipe 8 is inserted, it can provide space for the spring 804 to avoid the casting pipe sleeve 701.

[0076] Furthermore, in a preferred embodiment, please refer to... Figure 4 , Figure 9 The guide section 801 includes an upper guide pipe 8011, an expansion pipe 8012, and a lower guide pipe 8013 connected sequentially from top to bottom. The upper guide pipe 8011 and lower guide pipe 8013 are rigid pipes, while the expansion pipe 8012 is a flexible hose. Specifically, the expansion pipe 8012 is a wear-resistant rubber hose, and the upper guide pipe 8011 and lower guide pipe 8013 are stainless steel pipes, all three having the same dimensions. Based on this configuration, when concrete is delivered to the guide section 801, the expansion pipe 8012, being a flexible hose, expands under internal pressure, squeezing the inner wall of the pouring pipe sleeve 701, increasing the friction between them. Therefore, under the reverse impact force of the concrete, the guide section 801 will not produce friction relative to the pouring pipe sleeve 701. The expansion pipe 8012 is vertically displaced and slips out of the casting pipe sleeve 701. In addition, the upper guide pipe 8011 and the lower guide pipe 8013 connected to the expansion pipe 8012 are rigid pipes. The two are inserted into the casting pipe sleeve 701 to prevent the self-vibrating casting pipe 8 from tilting and avoid pipe jamming. Preferably, the inner wall of the pipe opening where the lower guide pipe 8013 connects to the expansion pipe 8012 is fitted with a barrier ring 8014. The diameter of the inner cavity of the barrier ring 8014 gradually decreases along the concrete conveying direction. When the concrete passes through the inner cavity of the barrier ring 8014, the pressure on the expansion pipe 8012 upstream of the barrier ring 8014 increases due to the gradual reduction in the diameter of the inner cavity. The expansion pipe 8012 expands and squeezes, and the friction between it and the inner wall of the casting pipe sleeve 701 further increases.

[0077] To prevent the vibrating disc 806 from excessively obstructing the concrete delivery and avoiding pipe blockage, further, in a preferred embodiment, please refer to... Figure 4 and Figure 10 The vibrating plate 806 is installed at a downward angle from the inside to the outside of the tube, with an inclination angle of 30-40°.

[0078] Example 2

[0079] Based on the lattice column pile concrete pouring construction system disclosed in Embodiment 1, this embodiment provides its specific construction steps, including:

[0080] S1. Rotary drilling rig construction;

[0081] S2. Lower the steel casing;

[0082] S3, please refer to Figure 12 Place the lattice column 3 and the reinforcing cage 4 horizontally on the ground, raise the lattice column 3 and insert one end of the lattice column 3 into the designed position inside the reinforcing cage 4. Weld and fix the two steel rails 601 on opposite sides to the reinforcing cage 4 or the lattice column 3 through the threaded bars so that the two steel rails 601 are fixed in the horizontal direction in the cavity through which the lattice column 3 and the reinforcing cage 4 are connected. At this time, the installation of the guide rail 6 is completed. Install the rope wheel 10 at the end of the guide rail 6, that is, between the ends of the two steel rails 601. Wrap the traction rope 9 around the rope wheel 10 so that its two ends are tensioned and tied to both sides of the end of the lattice column 3.

[0083] S3, please refer to Figure 13 The lattice column 3 and the steel cage 4 are vertically lifted and lowered into the pile hole, and the remaining lattice column 3 at the hole opening is used for reinforcement.

[0084] S4. Insert the casting pipe sleeve 701 into the outside of the guide section 801, and use the flange to connect the upper end of the guide section 801 to the pumping pipe 5. At this time, the self-vibrating casting pipe 8 is installed on the guide frame 7 through the guide section 801. Due to the limitation of the flange 14, the casting pipe sleeve 701 abuts against the flange, and the self-vibrating casting pipe 8 is suspended and inserted on the guide frame 7.

[0085] S5, please refer to Figure 3 and Figure 8 First, connect the guide frame 7 to the free end of the rope of the winch 15. Use the winch 15 to suspend the guide frame 7. Align the U-shaped limiting grooves 703 on both sides of the guide frame 7 vertically with the two steel rails 601. Slowly lower the guide frame 7 so that the two steel rails 601 are respectively embedded in the corresponding U-shaped limiting grooves 703 and slide in contact with the pulleys 704. At this time, the guide frame 7 is installed on the guide rail 6 at the orifice.

[0086] S6, please refer to Figure 3 and Figure 11Untie the traction ropes 9 tied to both sides of the ends of the lattice column 3. Pass one end of the traction rope 9 as the retrieval end through the rope hole 11 from bottom to top and connect it to one side of the limiting ball 12. Connect an extension rope 13, longer than the depth of the pile hole, to the other side of the limiting ball 12. Use the other end of the traction rope 9 as the traction end. Start the winch 15 to lower the rope, while simultaneously having one operator pull the traction end of the traction rope 9 out of the pile hole. Since the limiting ball 12 cannot pass through the rope hole 11, pulling the traction end of the traction rope 9 will cause the rope to be pulled... The cooperation of the guide rope 9, the limiting ball 12, and the rope hole 11 provides downward tension to the guide frame 7. Under the weight of the guide frame 7 and the self-vibrating pouring pipe 8, the guide frame 7 will slowly slide downwards along the guide rail 6. Simultaneously, another operator lowers the extension rope 13, keeping it taut. The length of the guide rope 9 pulled out of the pile hole or the length of the extension rope 13 inserted into the pile hole can be recorded to determine if the guide frame 7 has moved to the designed position. Please refer to [link to relevant documentation]. Figure 14 and Figure 15 After the guide frame 7 slides down to the design position, the winch 15 is turned off and the extension rope 13 is pulled outward. The extension rope 13, the traction rope 9 and the limit ball 12 can be recycled and reused to avoid them being left in the pile hole and affecting the quality of concrete pouring.

[0087] S7, please refer to Figure 16 Concrete is pumped into pumping pipe 5, and then pumped out through self-vibrating pouring pipe 8 and poured into the pile hole. After a certain amount of concrete is poured, the winch is turned on to lift the pipe, maintaining the concrete at a speed of 0.5m during the lifting process. 3 / h low-speed pumping to prevent concrete breakage, and to control the vibration section 803 to always be embedded 2-3 meters into the concrete;

[0088] When concrete is delivered to the guide section 801, the expansion pipe 8012 is an elastic hose, and under the action of the blocking ring 8014, the internal pressure of the expansion pipe 8012 will expand and squeeze the inner wall of the pouring pipe sleeve 701, resulting in increased friction between the two. Therefore, under the action of the reverse impact force of the concrete, the guide section 801 will not produce vertical displacement relative to the pouring pipe sleeve 701 and will not slip out of the pouring pipe sleeve 701. In addition, the upper guide pipe 8011 and the lower guide pipe 8013 connected to the expansion pipe 8012 are rigid pipes. The two are inserted into the pouring pipe sleeve 701, which can prevent the self-vibrating pouring pipe 8 from tilting and avoid pipe jamming.

[0089] When concrete is delivered to each vibrating section of the vibrating section 802, the concrete continuously impacts the baffle plate 804. The baffle plate 804 transmits the impact force to the vibrating rigid pipe 8023, causing the vibrating rigid pipe to vibrate continuously. Through the cooperation of the elastic hose 8021 and the spring 8022, the vibration amplitude of the vibrating rigid pipe 8023 in the horizontal and vertical directions can be limited without affecting the delivery of concrete, and the reciprocating vibration of the vibrating rigid pipe 8023 can be realized. In addition, the baffle plates 804 of each vibrating section are arranged at intervals from top to bottom and are uniformly staggered along the circumference. Therefore, each baffle plate 804 can be continuously and effectively impacted by the concrete without affecting each other. Furthermore, by setting multiple vibrating sections, the vibration of each vibrating section is superimposed to generate resonance, which in turn drives the vibrating section 803 embedded in the concrete to generate high-frequency vibration to vibrate the concrete and prevent uneven concrete pouring and the formation of voids.

[0090] S8. When the concrete in the pile hole is poured to a position 2-3m away from the hole opening, start the winch to lift the guide frame 7 out of the pile hole, remove the self-vibrating pouring pipe 8 from the guide frame 7, disconnect the flange 14 connecting the pumping pipe 5 and the self-vibrating pouring pipe 8, and use the pumping pipe 5 to directly pump concrete into the pile hole to pour it to the top of the pile. Clean the concrete residue on the guide frame 7 and the self-vibrating pouring pipe 8, and put them into the next grid column pouring construction for recycling.

Claims

1. A lattice column pile concrete pouring construction system based on ultra-deep pile foundations, comprising a steel casing inserted into the pile hole, a reinforcing cage installed at the bottom of the pile hole, a lattice column with its bottom end inserted into the reinforcing cage, a winch set around the pile hole opening, and a pumping pipe for conveying concrete into the pile hole, characterized in that... Also includes: The guide rail is fixed along the length of the lattice column in the cavity through which the lattice column and the reinforcing cage pass. A guide frame is connected to the free end of the winch's rope and can slide freely up and down along the guide rail; a rope winding wheel is located at the end of the guide rail. A traction rope, one end of which is connected to a guide frame, and the other end extends past a rope wheel to the opening of the pile hole to form a traction end; The self-vibrating casting pipe includes a guide section, a vibration section, and a compaction section connected sequentially from top to bottom. The upper end of the guide section is connected to the discharge port of the pumping pipe. The self-vibrating casting pipe is installed on a guide frame through the guide section. Several baffles are arranged in a uniformly staggered circumferential direction at intervals from top to bottom inside the pipe of the vibration section. The concrete delivered to the vibration section impacts the baffles, which in turn drive the vibration section and the compaction section inserted into the concrete to vibrate continuously.

2. The lattice column pile concrete pouring construction system based on ultra-deep pile foundation as described in claim 1, characterized in that, Also includes: Rope threading holes are provided on the guide frame; A limiting ball with a diameter larger than the diameter of the rope-threading hole; The extension rope connected to the limit ball; One end of the traction rope passes through the rope hole from bottom to top and extends to the opening of the pile hole to connect with the limiting ball to form the recovery end. The other end goes around the rope wheel and extends upward to the opening of the pile hole to form the traction end.

3. The lattice column pile concrete pouring construction system based on ultra-deep pile foundation as described in claim 1, characterized in that, The guide rail includes two steel rails, which are fixed parallel to each other along the axis of the pile hole and in the cavity through which the lattice column and the reinforcing cage pass.

4. The lattice column pile concrete pouring construction system based on ultra-deep pile foundation as described in claim 3, characterized in that, The rails are plain round steel bars with a diameter of 14-22mm. The two rails are fixed to the steel cage or lattice column by welding the opposite sides of the rails with threaded bars.

5. The lattice column pile concrete pouring construction system based on ultra-deep pile foundation as described in claim 4, characterized in that, The guide frame includes a casting pipe sleeve inserted and fitted outside the guide section. Multiple side support rods are provided on both sides of the casting pipe sleeve. The outer ends of the side support rods are connected to U-shaped limiting grooves. A pulley is rotatably installed in the groove of the U-shaped limiting groove. Two steel rails are respectively embedded in the grooves of the U-shaped limiting grooves on both sides and slide in contact with the pulleys.

6. The lattice column pile concrete pouring construction system based on ultra-deep pile foundation as described in claim 5, characterized in that, The side support rod includes a fixed rod, one end of which is fixedly connected to the side wall of the casting pipe sleeve, and the other end is provided with a sliding groove. A telescopic rod is slidably inserted into the sliding groove. The outer end of the telescopic rod is connected to a U-shaped limiting groove. A spring is sleeved on the outside of the telescopic rod. One end of the spring is fixedly connected to the end of the fixed rod, and the other end is fixedly connected to the bottom of the U-shaped limiting groove.

7. The lattice column pile concrete pouring construction system based on ultra-deep pile foundation as described in claim 1, characterized in that, The vibration section includes several vibration segments connected sequentially from top to bottom. Each vibration segment includes an elastic hose, a spring that loops around the elastic hose and is fixedly connected to the upper and lower ends of the elastic hose, and a vibrating rigid tube connected to the lower end of the elastic hose. The blocking plate is disposed inside the vibrating rigid tube to partially block the conveying channel of the vibrating rigid tube.

8. The lattice column pile concrete pouring construction system based on ultra-deep pile foundation as described in claim 1, characterized in that, The self-vibrating casting pipe also includes a connecting pipe. The upper end of the connecting pipe is connected to the guide section, and the lower end is connected to the vibration section. The diameter of the connecting pipe gradually decreases. The diameters of the vibration section and the tamping section are the same, and the diameter of the guide section is larger than that of the vibration section.

9. The lattice column pile concrete pouring construction system based on ultra-deep pile foundation as described in claim 1, characterized in that, The guide section includes an upper guide pipe, an expansion pipe, and a lower guide pipe connected sequentially from top to bottom. The upper and lower guide pipes are rigid pipes, while the expansion pipe is a flexible hose. A barrier ring is fitted on the inner wall of the pipe opening where the lower guide pipe connects to the expansion pipe. The diameter of the cavity inside the barrier ring gradually decreases along the concrete conveying direction.

10. The lattice column pile concrete pouring construction system based on ultra-deep pile foundation as described in claim 1, characterized in that, The vibrating plate is inclined downwards from the inside of the tube to the outside of the tube, with an inclination angle of 30-40°.

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