A device for underwater maintenance of a pier column

Abstract

The application discloses a kind of pier underwater maintenance device, belong to underwater pier maintenance technical field, hoist lifting of underwater pouring structure is carried out by hanger, hanger is hung under sealing device, segmented connection and installation of FRP fiber cylinder are carried out, the buckle device and water stop structure of FRP fiber cylinder, can guarantee the good sealing of the connecting place of FRP fiber cylinder;Wherein, guide cylinder is arranged at the lower end of pier for increasing the rigidity of pier base, to place the FRP fiber cylinder installed subsequently in pouring process occurs inclination, guide rod is used to guide the downward movement of under sealing device, and can become a part after concrete forming, enhance the integrity, stability of structure;This device is easy to install, does not need to coffered water to the environment, engineering range is small, material input is low, and then reduce the construction period investment.

Description

Technical Field

[0001] This invention belongs to the field of underwater pier maintenance technology, specifically relating to an underwater pier maintenance device. Background Technology

[0002] Bridge construction is a long-term project that benefits the local people. Many bridge piers, due to prolonged immersion in water, suffer from erosion, salt corrosion, and weathering, leading to gradual structural failure and loss of safety. my country is a major bridge-building nation with numerous bridges spanning rivers, seas, and oceans; therefore, the reinforcement and maintenance of underwater bridge piers is a key focus. Currently, the commonly used method for reinforcing cylindrical piers is cofferdam reinforcement, which requires water diversion and waterproofing; it is expensive in terms of materials and construction costs, and has a long construction period. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an underwater maintenance device for piers, which can perform maintenance and reinforcement of piers without abandoning water.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention includes a hanger, a guide cylinder, a lower sealing device, and several FRP fiber cylinders. The hanger is fixed to the upper end of a pier column, and several hand-operated hoists are mounted on the hanger. The guide cylinder is sleeved on the outer side of the bottom end of the pier column. The lower sealing device includes a ring seat, an airbag ring, a retaining ring, and several guide rods. The ring seat is sleeved on the outer side of the pier column, and a pull ring for connecting to the hand-operated hoists is fixed on the outer side of the ring seat. An annular groove is formed on the upper end face of the ring seat, the airbag ring is disposed in the annular groove, the retaining ring is slidably disposed in the annular groove and located above the airbag ring, the guide rods are vertically wrapped around the pier column, and the guide rods are bolted to the retaining ring. A connecting ring is also provided on the upper end face of the retaining ring. The FRP fiber cylinders include... Two fiberboards are connected end-to-end to form a cylindrical shape. Several FRP fiber tubes are sleeved on the outside of the pier. A guide rod is located between the pier and the FRP fiber tubes. The upper and lower ends of the FRP fiber tubes are connected by snap-fit. The lower end of the lowest FRP fiber tube is connected by snap-fit. Grooves with the same extension direction as the connecting edge are opened on both sides of the connecting edge of the fiberboard. Annular grooves are opened on both the inner and outer sides of the connecting edge of the connecting ring. Annular grooves are opened on both the inner and outer sides of the upper and lower ends of the FRP fiber tubes. A waterstop strip is also included. Two parallel retaining strips are provided on one side of the waterstop strip. The waterstop strip covers the gap of the snap-fit ​​connection, and the retaining strips are inserted into the two adjacent grooves.

[0006] Furthermore, it also includes a water-blocking device, which comprises an upper ring, a lower ring, and several triangular frame plates. The lower ring is fixed to the outside of the guide cylinder, and a seat ring is fixedly installed below the lifting ring. The upper ring is located below the seat ring, and several tightening screws are threaded onto the seat ring. The ends of the tightening screws are rotatably located inside the upper ring. Several triangular frame plates overlap between the upper ring and the lower ring. Each triangular frame plate includes three baffles that are rotatably connected in sequence. The baffles are connected end to end to form a triangular prism-shaped triangular frame plate. Several water passage holes are opened on the baffles. A rotating ring is fixed to the upper end of the triangular frame plate and the top surface of the lower ring. A ring groove that mates with the rotating ring is opened at the lower end of the triangular frame plate and the bottom surface of the upper ring.

[0007] Furthermore, it also includes several support parts and abutments. The support parts include a support beam and an arc-shaped rod. Rollers are rotatably provided at both ends of the arc-shaped rod. The support beam is fixed to the middle section of the arc-shaped rod. The support beam is movably mounted on the guide rod and fixed by the screws. The end of the support beam is fixed to the side of the waterstop strip inside the FRP fiber tube. The rollers are supported on the outside of the pier. One end of the abutment is fixed at the included angle of the triangular frame plate, and the other end abuts against the side of the waterstop strip outside the FRP fiber tube.

[0008] Furthermore, the hanger includes several side frames, each a triangular frame-shaped support structure. Two clamping beams are fixed to the upper and lower parts of the side ends of each side frame, clamping the side of the pier. The ends of the clamping beams extend outwards to encircle the pier, and several control plugs are provided on the clamping beams to lock the ends of the rubber strips onto the clamping beams. Several side frames surround the upper part of the pier, and the outer ends of the side frames are provided with lifting rings. The hand-operated hoist is fixed to the lifting rings.

[0009] Furthermore, several guide components are fixed on the inner side of the guide cylinder. The guide components are V-shaped plates with guide wheels rotatably mounted at both ends. The two guide wheels roll on the side of the pier column, making the guide cylinder coaxial with the pier column.

[0010] The beneficial effects of this invention are as follows:

[0011] 1. The underwater casting structure is hoisted using a gantry crane. The gantry crane supports the lower sealing device for segmented connection and installation of FRP fiber tubes. The snap-fit ​​device and water-stop strip structure of the FRP fiber tubes ensure good sealing at the joints. The guide tube is set at the lower end of the pier to increase the rigidity of the pier base and prevent the FRP fiber tubes from tilting during the subsequent installation process. The guide rod is used to guide the downward movement of the lower sealing device and can also become part of the concrete after molding, enhancing the integrity and stability of the structure. This device is easy to install, does not require cofferdams to discharge water, has a small project scope, low material input, and thus reduces construction time.

[0012] 2. Triangular frame plates surround the outside of the FRP fiber cylinder. Each triangular frame plate can rotate around the pivot. With the locking screws, the vertical movement of the triangular frame plates is restricted. The triangular frame plates are used to block the water flow and prevent the impact of the water flow on the uncured concrete and FRP fiber cylinder, which would lead to damage to the concrete structure and a decrease in stability. The angle of the triangular frame plates can change according to the direction of the water flow at different depths, dividing the water flow. The water passage holes set on the baffle plate are also designed to minimize the impact of the water flow on the triangular frame plates themselves. Through this structure, it is ensured that the concrete on the outside of the pier column is not affected by the impact of the water flow during the curing process, thus ensuring the structural stability after curing.

[0013] 1. Through the mutual support of the frame, FRP fiber tube, waterstop strip and support, the impact force of water flow on the triangular frame plate can make the waterstop strip fit more tightly to the FRP fiber tube, thereby improving the sealing performance of the FRP fiber tube and promoting the solidification of concrete.

[0014] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0015] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0016] Figure 1 This is a schematic diagram of installing an FRP fiber tube according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1 Enlarged view of point A;

[0018] Figure 3 This is a schematic diagram of the lower sealing device according to an embodiment of the present invention;

[0019] Figure 4This is a schematic diagram of the planar connection of FRP fiber tubes according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the vertical connection node of the FRP fiber tube according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram showing the FRP fiber tube after installation according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the water-blocking device installed according to an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram showing the installation of the water-blocking rotating shaft according to an embodiment of the present invention.

[0024] Figure 9 This is a schematic diagram of the side frame structure according to an embodiment of the present invention;

[0025] Figure 10 This is a detailed schematic diagram of the guide cylinder according to an embodiment of the present invention;

[0026] The following are the markings in the attached diagram: 1. Hanger; 111. Side frame; 112. Hand chain hoist; 113. Rubber strip; 114. Clamping beam; 115. Control plug; 116. Lifting ring; 12. Seat ring; 13. Tightening screw; 2. Guide cylinder; 21. Guide component; 22. Guide wheel; 3. Lower sealing device; 31. Ring seat; 311. Pull ring; 312. Annular groove; 32. Airbag ring; 33. Retaining ring; 331. Connecting ring; 34. Guide rod; 4. FRP fiber tube; 41. Fiberboard; 42. Waterstop strip; 5. Water-blocking device; 51. Upper ring; 52. Lower ring; 53. Triangular frame plate; 531. Baffle plate; 532. Rotary ring; 6. Support part; 61. Support beam; 62. Arc rod; 63. Roller; 7. Support frame. Detailed Implementation

[0027] like Figures 1-10 As shown, the present invention includes a hanger 1, a guide cylinder 2, a lower sealing device 3, and a plurality of FRP fiber cylinders 4; Reference Figure 1 and Figure 9The hanger 1 is fixed to the upper end of the pier. The hanger 1 includes three side frames 111, each a triangular frame-shaped support. Two clamping beams 114 are fixed to the upper and lower parts of the side ends of each side frame 111, clamping the side of the pier. The ends of the clamping beams 114 extend outwards and encircle the pier with rubber strips 113. Several control plugs 115 are provided on the clamping beams 114, which hold the rubber strips... The end of 113 is locked onto the clamping beam 114. The diameter of the rubber strip 113 is adjusted by the control plug 115 to control the radial distance between the upper end of the side frame 111 and the pier. The side frame 111 is supported by the clamping beam 114 at the lower end of the side frame 111, thus achieving the function of firmly fixing the side frame 111 to the upper end of the pier. The outer end of the side frame 111 is provided with a lifting ring 116. The hand chain hoist 112 is fixed on the lifting ring 116 and is used to lift the submerged component.

[0028] refer to Figure 1 and Figure 10 The guide cylinder 2 is sleeved on the outer side of the bottom end of the pier. The guide cylinder 2 is lowered along the pier by a hand-operated hoist 112. Four guide members 21 are fixed to the inner side of the guide cylinder 2. Each guide member 21 is V-shaped and has guide wheels 22 rotating at both ends. Two of the guide wheels 22 roll on the side of the pier. The four guide members 21 are evenly distributed around the inner perimeter of the guide cylinder 2. Supported by the guide members 21, the guide cylinder 2 is coaxial with the pier. The guide wheels 22 can be rubber guide wheels 22. After the guide cylinder 2 is lowered into the water, the guide wheels 22 will buffer the shaking and impact caused during underwater operations. Figure 3 The lower sealing device 3 includes a ring seat 31, an airbag ring 32, a retaining ring 33, and four guide rods 34. The ring seat 31 is sleeved on the outside of the pier. A pull ring 311 for connecting to the hand-operated hoist 112 is fixed on the outside of the ring seat 31. The height of the lower sealing device 3 on the pier can be controlled by adjusting the hoist pull ring 311. An annular groove 312 is provided on the upper end face of the ring seat 31. The airbag ring 32 is located in the annular groove 312. The retaining ring 33 is slidably disposed in the annular groove 312 and located above the airbag ring 32. The annular groove 312 restricts the upward movement of the retaining ring 33. The four guide rods 34 are vertically encircled around the pier. The guide rods 34 are bolted to the retaining ring 33. A connecting ring 331 is also provided on the upper end face of the retaining ring 33. Figure 4 and Figure 5As shown, the FRP fiber tube 4 includes two fiberboards 41, which are connected end-to-end in a snap-fit ​​manner to form a tube shape. Several FRP fiber tubes 4 are fitted onto the outside of the pier. The guide rod 34 is located between the pier and the FRP fiber tubes 4. The upper and lower ends of the several FRP fiber tubes 4 are snap-fitted together. The lower end of the lowest FRP fiber tube 4 is snap-fitted to the connecting ring 331. The snap-fit ​​connection of the FRP fiber tubes 4 is completed at the water surface. After each layer of FRP fiber tubes 4 is connected, the FRP fiber tube 4 is lowered by adjusting the hand chain hoist 112, and then the second layer of FRP fiber tubes 4 is connected again. (Refer to...) Figure 6 When the lower sealing device 3 sinks and abuts against the top surface of the guide cylinder 2, the assembly of the FRP fiber cylinder 4 is completed, and the top layer FRP fiber cylinder 4 is above the water surface; Figure 5 As shown, grooves extending in the same direction as the connecting edge are opened on both sides of the fiberboard 41 connecting edge, and annular grooves are opened on both the inner and outer sides of the connecting edge of the connecting ring 331. Annular grooves are opened on both the inner and outer sides of the upper and lower ends of the FRP fiber tube 4. It also includes a water-stop strip 42. Two parallel retaining strips are provided on one side of the water-stop strip 42. The water-stop strip 42 covers the gap of the snap-fit ​​connection. The retaining strips are inserted into the two adjacent grooves. Through the water-stop strip 42, the FRP fiber tube 4 and the connecting ring 331 can be kept sealed. Finally, the air bag ring 32 is inflated by an air pump, and the water between the FRP fiber tube 4 and the pier is pumped out by a water pump. Then, concrete can be poured into the gap between the FRP fiber tube 4 and the pier.

[0029] This underwater maintenance device uses a gantry 1 to hoist the underwater cast-in-place structure. The gantry 1 holds the lower sealing device 3 and connects and installs the FRP fiber tubes 4 in sections. The snap-fit ​​device and water-stop strip 42 of the FRP fiber tubes 4 ensure good sealing at the joints. The guide tube 2 is set at the lower end of the pier to increase the rigidity of the pier base and prevent the FRP fiber tubes 4 from tilting during the subsequent installation. The guide rod 34 guides the downward movement of the lower sealing device 3 and can also become part of the concrete after it is formed, enhancing the integrity and stability of the structure. This device is easy to install, does not require cofferdams to release water, has a small project scope, low material input, and thus reduces the construction period.

[0030] In a further proposed solution, refer to Figure 7It also includes a water-blocking device 5, which includes an upper ring 51, a lower ring 52, and several triangular frame plates 53. The lower ring 52 is fixed on the outside of the guide cylinder 2. A seat ring 12 is fixedly installed below the lifting ring 116. The upper ring 51 is located below the seat ring 12. Several tightening screws 13 are threaded onto the seat ring 12. The ends of the tightening screws 13 are rotatably located inside the upper ring 51. Several triangular frame plates 53 overlap between the upper ring 51 and the lower ring 52. Each triangular frame plate 53 includes three baffles 531 that are rotatably connected in sequence. The baffles 531 are connected end to end to form a triangular prism triangular frame plate 53. Several water passage holes are opened on the baffles 531. A rotating ring 532 is fixed at the upper end of the triangular frame plate 53 and at the top surface of the lower ring 52. A ring groove that mates with the rotating ring 532 is opened at the lower end of the triangular frame plate 53 and at the bottom surface of the upper ring 51.

[0031] The installation of the triangular frame plate 53 still relies on the hanger 1 and the hand chain hoist 112. The final installation structure is as follows: Figure 8 The triangular frame plate 53 surrounds the outside of the FRP fiber cylinder 4. Each triangular frame plate 53 can rotate around the pivot of the rotating ring 532. Under the locking of the locking screw 13, the vertical movement of the triangular frame plate 53 is restricted. The triangular frame plate 53 is used to block the water flow and prevent the impact of the water flow on the uncured concrete and FRP fiber cylinder 4, which would lead to damage to the concrete structure and a decrease in stability. The triangular frame plate 53 can change its angle according to the direction of the water flow of different depths to divide the water flow. The water passage holes set on the baffle plate 531 are also designed to minimize the impact of the water flow on the triangular frame plate 53 itself. Through this structure, it can be ensured that the concrete on the outside of the pier column is not affected by the impact of the water flow during the curing process, thus ensuring the structural stability after curing.

[0032] Further solutions also include several support components 6 and abutment 7, for reference. Figure 2 as well as Figure 7The support part 6 includes a support beam 61 and an arc-shaped rod 62. Rollers 63 are rotatably provided at both ends of the arc-shaped rod 62. The support beam 61 is fixed to the middle section of the arc-shaped rod 62. The support beam 61 is movably mounted on the guide rod 34 and fixed by the screws. The end of the support beam 61 is fixed to the side of the waterstop strip 42 inside the FRP fiber tube 4. The rollers 63 are supported on the outside of the pier column. When the support part 6 is divided to install the FRP fiber tube 4, it moves downward with the guide rod 34. Ultimately, it becomes part of the concrete structure, forming an interlaced support frame structure within the concrete. During installation, the support 6 descends along the pier and rests on the waterstop strip 42 inside the FRP fiber tube 4. One end of the abutment 7 is fixed at the included angle of the triangular frame plate 53, and the other end abuts against the side of the waterstop strip 42 outside the FRP fiber tube 4. This structure allows the abutment 7, FRP fiber tube 4, waterstop strip 42, and support 6 to support each other. The impact of the water flow on the triangular frame plate 53 can make the waterstop strip 42 fit more tightly against the FRP fiber tube 4, thereby improving the sealing performance of the FRP fiber tube 4 and promoting the solidification of the concrete.

[0033] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. An underwater maintenance device for pier columns, characterized in that: The device includes a hanger (1), a guide cylinder (2), a lower sealing device (3), and several FRP fiber cylinders (4); the hanger (1) is fixed to the upper end of the pier, and several hand-operated hoists (112) are provided on the hanger (1); the guide cylinder (2) is sleeved on the outer side of the bottom end of the pier; the lower sealing device (3) includes a ring seat (31), an airbag ring (32), a retaining ring (33), and several guide rods (34). The ring seat (31) is sleeved on the outer side of the pier, and a pull ring (311) for connecting with the hand-operated hoist (112) is fixed on the outer side of the ring seat (31). An annular groove (312) is opened on the upper end face of the ring seat (31). The airbag ring (32) The retaining ring (33) is slidably disposed in the annular groove (312) and located above the airbag ring (32). The guide rod (34) is vertically wrapped around the pier. The guide rod (34) is bolted to the retaining ring (33). The upper end face of the retaining ring (33) is also provided with a connecting ring (331). The FRP fiber tube (4) includes two fiberboards (41). The two fiberboards (41) are connected end to end in a snap-fit ​​manner to form a tube shape. Several FRP fiber tubes (4) are sleeved on the outside of the pier. The guide rod (34) is located between the pier and the FRP fiber tube (4). Several FRP fiber tubes (4) The upper and lower end faces are snap-fit ​​connected, and the lower end of the FRP fiber tube (4) at the bottom is snap-fit ​​connected to the connecting ring (331); the fiberboard (41) has grooves on both sides of the connecting edge with the same extension direction as the connecting edge, the connecting ring (331) has annular grooves on both the inner and outer sides of the connecting edge, the FRP fiber tube (4) has annular grooves on both the inner and outer sides of the upper and lower ends, and also includes a waterstop strip (42), one side of the waterstop strip (42) has two parallel retaining strips, the waterstop strip (42) covers the gap of the snap-fit ​​connection, and the retaining strips are inserted into the two adjacent grooves; the hanger (1) includes several side frames (111), and The side frame (111) is a triangular frame-shaped support structure. Two clamping beams (114) are fixed to the upper and lower parts of the side end of the side frame (111). The clamping beams (114) are clamped to the side of the pier. The ends of the clamping beams (114) extend out to surround the pier with rubber strips (113). Several control plugs (115) are provided on the clamping beams (114). The control plugs (115) lock the ends of the rubber strips (113) on the clamping beams (114). Several side frames (111) surround the upper part of the pier. The outer end of the side frame (111) is provided with a lifting ring (116). The hand-operated hoist (112) is fixed on the lifting ring (116).

2. The underwater maintenance device for piers according to claim 1, characterized in that: It also includes a water-blocking device (5), which includes an upper ring (51), a lower ring (52), and several triangular frame plates (53). The lower ring (52) is fixed to the outside of the guide cylinder (2). A seat ring (12) is fixedly installed below the lifting ring (116). The upper ring (51) is located below the seat ring (12). Several tightening screws (13) are threaded onto the seat ring (12). The ends of the tightening screws (13) are rotatably located inside the upper ring (51). Several triangular frame plates (53) overlap the upper ring (51). Between the upper ring (51) and the lower ring (52), the triangular frame plate (53) includes three baffles (531) that are rotatably connected in sequence. The baffles (531) are connected end to end to form a triangular prism triangular frame plate (53). Several water passage holes are opened on the baffles (531). A rotating ring (532) is fixed at the upper end of the triangular frame plate (53) and a rotating ring (532) is fixed at the top surface of the lower ring (52). A ring groove that cooperates with the rotating ring (532) is opened at the lower end of the triangular frame plate (53) and the bottom surface of the upper ring (51).

3. The underwater maintenance device for piers according to claim 2, characterized in that: It also includes several support parts (6) and abutment (7). The support part (6) includes a support beam (61) and an arc rod (62). Rollers (63) are rotatably provided at both ends of the arc rod (62). The support beam (61) is fixed in the middle section of the arc rod (62). The support beam (61) is movably set on the guide rod (34) and fixed by the screw. The end of the support beam (61) is fixed to the side of the waterstop strip (42) inside the FRP fiber tube (4). The rollers (63) are supported on the outside of the pier. One end of the abutment (7) is fixed at the included angle of the triangular frame plate (53), and the other end abuts against the side of the waterstop strip (42) outside the FRP fiber tube (4).

4. The underwater maintenance device for piers according to claim 1, characterized in that: The inner side of the guide cylinder (2) is also fixed with several guide members (21). The guide members (21) are in the shape of a V-shaped plate. The two ends of the guide members (21) are provided with guide wheels (22). The two guide wheels (22) roll on the side of the pier column, so that the guide cylinder (2) is coaxial with the pier column.

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