CN210658333U - Drilling bored concrete pile in water - Google Patents

Abstract

The utility model relates to an underwater cast-in-situ bored pile, which comprises a construction platform concrete casting hanger system, a pile top connecting device, a reinforcement cage sinking and lengthening device and a mud pit graded filtering protection device; the construction platform concrete pouring hanger system comprises a steel pipe pile, a Bailey beam, a drilling platform, a slide rail, a concrete guide pipe and a funnel; the pile top connecting device comprises a steel pipe pile, a Bailey beam, a bracket, a top shock pad and a mounting bolt; the steel reinforcement cage sinking and lengthening device comprises a sinking frame, a first clamping rod, a second clamping rod and a detachable arc-shaped calibration plate; the mud pit classified filtration protection device comprises a higher-level steel casing mud pit, a lower-level steel casing mud pit, a protection grid cover plate, a mud diversion trench and a retractable screen. The utility model has the advantages that: the utility model discloses the concrete that sets up fills the gallows, can be on drilling platform accurate effectual control pipe height and hang down straightness and lifting speed, the concrete of being convenient for fills, improves and becomes stake quality.

Description

Drilling bored concrete pile in water

Technical Field

The utility model relates to a bored concrete pile especially relates to an aquatic drilling bored concrete pile.

Background

With the rapid development of economy and the improvement of bridge construction technology in China, cast-in-place bored pile technology is frequently used in foundation construction at present. The underwater cast-in-situ bored pile is widely applied to the construction of river-crossing and sea-crossing bridge projects. However, in specific construction, because the process is very complicated and the engineering geological structure is very complicated, the problems of unstable construction platform, hole collapse during drilling, ineffective pouring of concrete conduits, mud waste, environmental pollution, safety accidents and the like often occur in construction.

In summary, it is very important to find a bored pile in water, which is simple and convenient to construct, energy-saving and environment-friendly, and can safely and effectively improve the construction quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough among the prior art, provide an aquatic drilling bored concrete pile.

The underwater cast-in-situ bored pile comprises a construction platform concrete casting hanger frame system, a pile top connecting device, a reinforcement cage sinking and lengthening device and a mud pit graded filtering protection device;

the construction platform concrete pouring hanger system comprises a steel pipe pile, a Bailey beam, a drilling platform, a sliding rail, a rail clamping device, a channel steel, a concrete guide pipe and a funnel, wherein the upper end of the steel pipe pile is fixed on the I-steel, the Bailey beam is arranged above the I-steel, and the channel steel is arranged above the Bailey beam; sliding rails are laid on two sides of the drilling platform, shock pads and steel pads are laid on the lower portions of the sliding rails in sequence, and the shock pads and the steel pads are anchored with channel steel on the surface of the platform through L-shaped fixing bolts; the concrete pouring hanger comprises an electric hoist, a hanger main beam, a hanger bracket and a lifting hook, wherein a rail clamping device is arranged at the bottom of the hanger bracket and is arranged on the sliding rail; an electric hoist on the hanger main beam is connected with a lifting hook, and the lifting hook lifts the funnel and the concrete conduit;

the pile top connecting device comprises a steel pipe pile, a Bailey beam, a bracket, a left fixing clamping groove, a right fixing clamping groove, a clamping groove connecting shaft, a tightness adjusting bolt, a cushion fixing head, a cushion, an installation bolt hole, a limiting groove, a top damping pad and an installation bolt, wherein the left fixing clamping groove and the right fixing clamping groove are arranged on the outer side of the upper part of the steel pipe pile; the top edges of the left and right fixed clamping grooves are provided with top shock pads, limiting grooves are arranged above the top shock pads, mounting bolt holes are formed in the lower portions of the limiting grooves, and the tops of the clamping grooves and the tops of the brackets on the two sides are connected with the I-shaped steel through mounting bolts; (ii) a The I-shaped steel is provided with a Bailey beam, and a channel steel is arranged above the Bailey beam; a shear support frame is arranged between the adjacent steel pipe piles;

the steel reinforcement cage sinking and lengthening device comprises a sinking frame, a base fixing steel plate, an orifice protecting steel plate, a first clamping rod, a second clamping rod and a detachable arc-shaped calibrating plate; the sinking frame is of a square structure, the upper part and the lower part of the sinking frame are provided with square through holes which are identical, and the sinking frame is arranged right above the steel casing; the four corners of the bottom of the sinking frame are welded with base fixing steel plates and fixed through fixing bolts, the four corners of the top end of the sinking frame are welded with orifice protecting steel plates, the middles of the four sides of the upper end of the sinking frame are respectively provided with a sinking frame clamping groove, a first clamping rod and a second clamping rod are arranged in the sinking frame clamping grooves, detachable arc-shaped calibration plates are arranged on the first clamping rod and the second clamping rod, the first clamping rod and the second clamping rod penetrate through reinforcement cage stirrups at the upper end of a lower reinforcement cage to clamp and fix the reinforcement cage, and upper and lower sections of reinforcement cage longitudinal reinforcements are bound through the detachable arc-shaped calibration plates;

mud pit stage filtration protector includes that higher level steel protects a mud pit, subordinate steel protects a mud pit, protection net apron, mud guiding gutter and collapsible screen cloth, and the protection net apron that can open and shut is arranged to the mud pond mouth, has seted up an opening in adjacent steel protects a mud pit one side, and subordinate steel protects a mud pit opening and protects a mud pit than higher level steel and hang down, and upper and lower level steel protects a mud pit opening and passes through the mud guiding gutter and connect, and subordinate steel protects a mud pit and arranges collapsible screen cloth.

Preferably, the method comprises the following steps: the slide rail is an I-shaped slide rail.

Preferably, the method comprises the following steps: the outer sides of the left fixing clamping groove and the right fixing clamping groove are fillets, the bracket is located on two sides of the clamping groove, the limiting groove is installed at the top end of the bracket, and the lower portion of the limiting groove is provided with an installing bolt hole.

Preferably, the method comprises the following steps: a clamping rod notch is formed in the middle of the second clamping rod, and the size of the clamping rod notch is matched with that of the first clamping rod; the surface of the clamping rod is provided with a rubber cushion layer.

Preferably, the method comprises the following steps: the concave surface of the detachable arc-shaped calibration plate faces towards the steel reinforcement cage, a plurality of rubber sleeves are arranged at equal intervals on the concave surface, and the detachable arc-shaped calibration plate is close to the steel reinforcement cage and is fixed on the clamping rod through a base adjustable bolt device; the steel reinforcement cage is indulged the muscle and is passed through rubber sleeve spacing and carry out accurate butt joint ligature, the rubber sleeve inside diameter is the same with steel reinforcement cage longitudinal reinforcement diameter.

Preferably, the method comprises the following steps: the protection grid cover plate adopts a hot galvanizing grid plate, the cover plate rotating shaft device is welded on the side walls of the protection grid cover plate and the upper-level steel protection cylinder mud tank, a cover plate movable shaft is arranged in the cover plate rotating shaft device, a lock catch is welded at the opening and closing end of the protection grid cover plate, and a lock hole in the lock catch is connected through an iron wire or a lock chain.

Preferably, the method comprises the following steps: the retractable screen is supported by a screen framework and a screen hoop, a framework central shaft is arranged at the center of the screen framework, and one end of the framework is connected with a hanging hook by a chain buckle and is fixed on the wall of the steel protection cylinder.

The utility model has the advantages that:

the utility model discloses the concrete that sets up fills the gallows, can be on drilling platform accurate effectual control pipe height and hang down straightness and lifting speed, the concrete of being convenient for fills, improves and becomes stake quality.

The utility model discloses the pile bolck connecting device who sets up can be fast and firmly connect steel-pipe pile and platform module, has set up safe firm construction platform fast, and it is also more convenient to dismantle after waiting the engineering to finish.

The steel reinforcement cage sinking and lengthening device can well control the verticality of the steel reinforcement cage, and avoid the risks of hole collapse and the like in the hole caused by bumping and hanging the hole wall when the steel reinforcement cage is placed in the hole; the lengthening among the main reinforcements of the segmented reinforcement cage can be accurately and effectively carried out.

The utility model discloses the mud pit classified filtration protector that sets up can prevent effectively that debris and personnel from falling into the mud pit and causing the incident, and utilizes adjacent a height difference that protects to carry out the mud water conservancy diversion, carries out effective filtration through the screen cloth and recycles, and is energy-concerving and environment-protective, and construction convenience is swift.

Drawings

FIG. 1 is a schematic view of the overall structure of a bored pile in water;

FIG. 2 is a structural layout view of the construction platform pile top connecting device in elevation;

FIG. 3 is a schematic view of a concrete pouring hanger system;

FIG. 4 is a layout of the concrete pouring boom and track of FIG. 3 on a platform;

FIG. 5 is a side view of the concrete pouring boom of FIG. 3;

FIG. 6 is a detail of the slide rail of FIG. 5;

fig. 7 is a top view of the pile top connecting device of fig. 2;

fig. 8 is a front view of the pile top connecting device in fig. 2;

FIG. 9 is a top view of the cage spreader;

3 FIG. 3 10 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 39 3; 3

FIG. 11 is a schematic view of a latch lever;

FIG. 12 is a perspective view of a removable arcuate calibration plate;

FIG. 13 is a front view of a removable arcuate calibration plate;

FIG. 14 is a schematic view of a mud pit staged filtration guard;

FIG. 15 is a schematic view of the mud pit guard of FIG. 14;

fig. 16 is a schematic view of the mud pit scarfing apparatus of fig. 14.

Description of reference numerals: 1-steel pipe pile; 2-bailey beam; 3-drilling platform; 4-concrete pouring hanger; 5-electric hoist; 6-hanger main beam; 7-hanger bracket; 8-a hook; 9-slide rail; 10-rail clamping device; 11-channel steel; 12-steel gasket; 13-shock pad; 14-L-shaped fixing bolt; 15-bracket; 16-left fixed slot; 17-right fixed slot; 18-a clamping groove connecting shaft; 19-tightness adjusting bolt; 20-a cushion fixing head; 21-cushion; 22-mounting bolt holes; 23-a limit groove; 24-top cushion; 25-mounting bolts; 26-I-steel; 27-base fixing steel plate; 28-fixing bolt; 29-a sinking frame; 30-an orifice protection steel plate; 31-sink rack slot; 32-first catch lever; 33-second catch lever; 34-a reinforcement cage; 35-steel casing; 36-removable arc calibration plate; 37-reinforcement cage stirrup; 38-reinforcement cage longitudinal bar; 39-clamping rod notch; 40-rubber cushion layer; 41-rubber sleeve; 42-base adjustable bolt means; 43-upper level steel casing mud pit; 44-protective grid cover plate; 45-cover plate active shaft; 46-locking buckle; 47-slurry guide groove; 48-central axis of the skeleton; 49-collapsible screen; 50-screen skeleton; 51-hanging wall hook; 52-screen hoop; 53-cover plate rotating shaft device; 54-keyhole; 55-lock chain buckle; 56-scissor support; 57-concrete conduit; 58-funnel; 59-a reinforcement cage sinking and lengthening device; 60-mud pit protection device; 61-pile top connecting device; 62-lower steel casing mud pit.

Detailed Description

The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

The construction platform cast-in-place pile concrete pouring hanger system comprises a steel pipe pile 1, a Bailey beam 2, a drilling platform 3, a slide rail 9, a rail clamping device 10, a channel steel 11, a concrete guide pipe 57 and a funnel 58, wherein the upper end of the steel pipe pile 1 is fixed on an I-shaped steel, the Bailey beam 2 is arranged above the I-shaped steel, and the channel steel 11 is arranged above the Bailey beam 2; sliding rails 9 are laid on two sides of the drilling platform 3, the sliding rails 9 are I-shaped sliding rails, shock absorption pads 13 and steel pads 12 are laid on the lower portions of the sliding rails 9 in sequence, and the shock absorption pads 13 and the steel pads 12 are anchored with channel steel 11 on the surface of the platform through L-shaped fixing bolts 14; the concrete pouring hanger 4 comprises an electric hoist 5, a hanger main beam 6, a hanger bracket 7 and a lifting hook 8, a rail clamping device 10 is arranged at the bottom of the hanger bracket 7, the rail clamping device 10 is arranged on a sliding rail 9, and the concrete pouring hanger 4 can accurately move to the position above a pouring hole through the sliding and braking of the rail clamping device 10; the electric hoist 5 on the hanger main beam 6 is connected with the lifting hook 8, the lifting hook 8 lifts the funnel 58 and the concrete pipe 57, the lifting speed and the verticality of the concrete pipe 57 are accurately controlled through the electric hoist 5 and the lifting hook 8, and concrete pouring is facilitated.

The pile top connecting device comprises a steel pipe pile 1, a Bailey beam 2, a bracket 15, a left fixing clamping groove 16, a right fixing clamping groove 17, a clamping groove connecting shaft 18, a tightness adjusting bolt 19, a cushion fixing head 20, a cushion 21, an installation bolt hole 22, a limiting groove 23, a top shock pad 24 and an installation bolt 25, wherein the left fixing clamping groove 16 and the right fixing clamping groove 17 are arranged on the outer side of the upper part of the steel pipe pile 1, shaft holes are formed in the upper end and the lower end of the left fixing clamping groove and the lower end of the right fixing clamping groove respectively and are connected through the clamping groove connecting shaft 18, the tightness adjusting bolt 19 is installed on the clamping groove connecting shaft 18 to hoop the top end of the steel pipe pile 1, the cushion fixing head 20 is installed at the upper end and the lower end of the inner side of the groove, the; the top shock absorption pads 24 are arranged at the edges of the tops of the left and right fixed clamping grooves, the limiting grooves 23 are arranged above the top shock absorption pads 24, the lower portions of the limiting grooves 23 are provided with mounting bolt holes 22, the tops of the clamping grooves and the tops of the brackets 15 on the two sides are connected with I-shaped steel 26 through mounting bolts 25, and pile top connection is rapidly and effectively carried out; the I-shaped steel 26 is provided with a Bailey beam 2, and a channel steel 11 is arranged above the Bailey beam 2; and a scissors support frame 56 is arranged between the adjacent steel pipe piles 1. The outside of the left and right fixing clamp groove is a fillet, the bracket 15 is positioned on two sides of the clamp groove, the limiting groove 23 is installed at the top end of the bracket 15, and the lower part of the limiting groove 23 is provided with an installing bolt hole 22.

The steel reinforcement cage sinking and lengthening device comprises a sinking frame 29, a base fixing steel plate 27, an orifice protecting steel plate 30, a first clamping rod 32, a second clamping rod 33 and a detachable arc-shaped calibrating plate 36; the sinking frame 29 is of a square structure, the upper part and the lower part of the sinking frame are provided with square through holes which are identical, and the sinking frame 29 is arranged right above the steel casing 35; the welding of 29 bottom four corners of heavy frame has base fixed steel sheet 27 and fixed through fixing bolt 28, the welding of 29 top four corners of heavy frame has drill way protection steel sheet 30 to be used for protecting workman construction safety, respectively be equipped with a draw-in groove 31 in the middle of the 29 upper end four sides of heavy frame, lay first kelly 32 and second kelly 33 in the draw-in groove 31, arc calibration plate 36 can be dismantled in the installation on first kelly 32 and the second kelly 33, first kelly 32 and second kelly 33 pass the steel reinforcement cage stirrup 37 of the 34 upper end of steel reinforcement cage of hypomere and block fixedly with steel reinforcement cage 34, upper and lower two sections steel reinforcement cage indulge muscle 38 is through dismantling arc calibration plate 36 and ligature. A clamping rod notch 39 is formed in the middle of the second clamping rod 33, and the clamping rod notch 39 is matched with the first clamping rod 32 in size, so that the clamping rods can be conveniently arranged in parallel; the surface of the clamping rod is provided with a rubber cushion layer 40, so that the steel reinforcement cage can be better clamped and fixed, and the sliding is prevented. The concave surface of the detachable arc-shaped calibration plate 36 faces the reinforcement cage 34, a plurality of rubber sleeves 41 are arranged at equal intervals on the concave surface, and the detachable arc-shaped calibration plate 36 is close to the reinforcement cage 34 and is fixed on the clamping rod through a base adjustable bolt device 42; when the segmental reinforcement cage is connected and bound, the reinforcement cage longitudinal ribs 38 are limited by the rubber sleeves 41 and are precisely butted and bound, and the inner diameter of each rubber sleeve 41 is the same as the diameter of each reinforcement cage longitudinal rib 38.

The mud pit classified filtration protector comprises a higher steel casing mud pit 43, a lower steel casing mud pit 62, a protection grid cover plate 44, a mud diversion trench 47 and a retractable screen 49, wherein the mud pit adopts an adjacent steel casing of a construction pile foundation as a circulating sedimentation tank, the opening of the mud pit is provided with the protection grid cover plate 44 which can be opened and closed for safety protection, one side of the adjacent steel casing mud pit is provided with an opening, the opening of the lower steel casing mud pit 62 is slightly lower than that of the higher steel casing mud pit 43, the openings of the upper and lower steel casing mud pits are connected through the mud diversion trench 47, mud is discharged to the mud diversion trench 47 from the opening of the higher steel casing mud pit 43 and finally flows into the lower steel casing mud pit 62, and the lower steel casing mud pit 62 is provided with the retractable screen 49 for mud filtration and slag removal. The protection grid cover plate 44 is made of hot galvanizing grid plates, the cover plate rotating shaft device 53 is welded on the side walls of the protection grid cover plate 44 and the upper-level steel casing mud tank 43 and is rotationally opened and closed through the cover plate movable shaft 45, the lock catch 46 is welded at the opening and closing end of the protection grid cover plate 44, the lock hole 54 in the lock catch 46 is connected through an iron wire or a lock chain, the two cover plates are closed, and the safety protection effect is achieved. The retractable screen 49 is supported by a screen framework 50 and a screen hoop 52, a framework central shaft 48 is arranged at the center of the retractable screen 49, and one end of the screen framework 50 is connected with a hanging hook 51 through a chain buckle 55 and fixed on the wall of the steel protection cylinder.

The construction method of the underwater cast-in-situ bored pile comprises the following steps:

the steel pipe pile 1, the Bailey beam 2, the I-shaped steel 26 and the channel steel 11 are connected into a whole by using a pile top connecting device and a U-shaped clamp, and a shear support frame 56 is arranged to ensure that the steel pipe pile has enough stability, a left fixed clamping groove and a right fixed clamping groove in the pile top connecting device are connected by a clamping groove connecting shaft 18, the top end of the steel pipe pile is hooped and fixed by using a tightness adjusting bolt 19, and a limiting groove 23 and a mounting bolt hole 22 at the top are used for connecting and anchoring the tops of the clamping grooves and the tops of the bracket 11 and the I-shaped steel, so that quick and effective pile top connection is achieved.

the pile foundation pile casing is purchased and finished, the steel casing is sunk and positioned by adopting a double-layer positioning guide frame, the bottom of the guide frame is connected with a pre-embedded steel plate on a construction platform through bolts, a crane is used as hoisting equipment and is matched with a vibration hammer to insert and beat the steel casing, the pile is sunk into the soil by relying on the dead weight of the casing and the vibration hammer, the pile is vibrated to sink after the pile body is sunk to a certain depth and is confirmed to be stable, and the casing enters a bearing layer to ensure the construction safety.

③ mud pit adopts a steel casing adjacent to a construction pile foundation as a circulating sedimentation tank, ③ steel casing mud pit is provided with a filtering protection device, a mud pit protection grid cover plate adopts a hot galvanizing grid plate, a cover plate rotating shaft device 53 is welded on ③ side walls of ③ grid cover plate and ③ steel casing mud pit and is rotationally opened and closed through a cover plate movable shaft 45, a lock catch 46 is welded at ③ opening and closing end of ③ cover plate, two cover plates are closed through a lock hole 54 on an iron wire or a lock chain connecting lock catch to achieve safety protection, a circular retractable screen of ③ mud pit is supported by a screen framework 50 and a screen hoop 52, a framework central shaft 48 is arranged in ③ center of ③ screen framework 50, one end of ③ framework is connected with a hanging hook 51 through a lock chain buckle 55, ③ retractable screen 49 is fixed on ③ wall of ③ steel casing, filtered slag reaches a certain amount, ③ hanging hook is connected with an isometric rope ring and a cable rope, ③ hanging bracket can be hoisted through concrete pouring to play a slag removing role, a sludge can be effectively recycled, and a transport vehicle can be arranged to transport deposited sludge outwards to.

and fourthly, blanking and processing the reinforcement cage in a reinforcement processing workshop, adopting subsection and same-groove processing and manufacturing, reasonably arranging time according to the hole forming time of the former site, conveying the reinforcement cage to a drilling position through a reinforcement cage transport vehicle, after the drilling is accepted and cleared, arranging a crane on the site to combine with the reinforcement cage sinking and lengthening device 59 for hoisting, lengthening and lowering, fixing a reinforcement cage sinking frame of the reinforcement cage sinking and lengthening device right above the orifice steel protection cylinder through a base fixing steel plate 27 and a fixing bolt 28, when the subsection reinforcement cage is lowered, clamping and fixing the reinforcement cage by using a first clamping rod 32 and a second clamping rod 33 to penetrate through a reinforcement cage stirrup 37 at the upper end of the lowering reinforcement cage, binding upper and lower two sections of reinforcement cage longitudinal ribs 38 by using a detachable arc calibration plate 36, removing the arc calibration plate after binding, lifting the reinforcement cage by using the crane, taking out the clamping rod, fixing the lowering reinforcement cage to the upper end of the second section of the reinforcement cage by using a clamping rod until binding and drawing to finish binding and lowering of all reinforcement cages.

the method comprises the steps of pouring concrete on a pile body by a pump truck, producing the concrete by a mixing station, transporting the concrete to the site by a tank truck, paving a sliding rail 9 along a drilling platform 3, enabling a concrete pouring hanger 4 to accurately reach the upper part of a drilled hole through the sliding rail, accurately controlling the height and the verticality of a concrete guide pipe 57 by using an electric hoist 5 and a lifting hook 8, pouring the underwater concrete by adopting a plug pulling method, storing enough concrete in a large storage tank before plugging, ensuring that the depth of the guide pipe after plugging is larger than 1m, installing a water isolating ball in the pouring guide pipe before pouring the concrete, starting to plug the underwater concrete after the storage hopper is full of the concrete, checking whether water exists in the guide pipe by using a searchlight after plugging, confirming that the guide pipe does not leak water, continuously pouring the concrete after the guide pipe stops, and ensuring that the whole pile is poured before initial setting of the concrete.

sixthly, lifting the steel protective cylinder after concrete pouring is finished for 1-2 hours, and checking the quality.

Claims (7)

1. The underwater cast-in-situ bored pile is characterized by comprising a construction platform concrete cast-in-situ hanger system, a pile top connecting device, a reinforcement cage sinking and lengthening device and a mud pit graded filtering and protecting device;

the construction platform concrete pouring hanger system comprises a steel pipe pile (1), a Bailey beam (2), a drilling platform (3), a slide rail (9), a rail clamping device (10), channel steel (11), a concrete guide pipe (57) and a funnel (58), wherein the upper end of the steel pipe pile (1) is fixed on I-shaped steel, the Bailey beam (2) is arranged above the I-shaped steel, and the channel steel (11) is arranged above the Bailey beam (2); sliding rails (9) are laid on two sides of the drilling platform (3), shock absorbing pads (13) and steel pads (12) are laid on the lower portions of the sliding rails (9) in sequence, and the shock absorbing pads (13) and the steel pads (12) are anchored with channel steel (11) on the surface of the platform through L-shaped fixing bolts (14); the concrete pouring hanger (4) comprises an electric hoist (5), a hanger main beam (6), a hanger bracket (7) and a lifting hook (8), wherein a rail clamping device (10) is arranged at the bottom of the hanger bracket (7), and the rail clamping device (10) is arranged on a sliding rail (9); an electric block (5) on the hanger main beam (6) is connected with a lifting hook (8), and the lifting hook (8) lifts the funnel (58) and the concrete pipe (57);

the pile top connecting device comprises a steel pipe pile (1), a Bailey beam (2), a bracket (15), a left fixing clamping groove (16), a right fixing clamping groove (17), a clamping groove connecting shaft (18), a tightness adjusting bolt (19), cushion fixing heads (20), cushions (21), mounting bolt holes (22), a limiting groove (23), top shock pads (24) and mounting bolts (25), wherein the left fixing clamping groove (16) and the right fixing clamping groove (17) are arranged on the outer side of the upper part of the steel pipe pile (1), shaft holes are formed in the upper end and the lower end of the left fixing clamping groove and the lower end of the right fixing clamping groove and are connected through the clamping groove connecting shaft (18), the tightness adjusting bolt (19) is mounted on the clamping groove connecting shaft (18), the cushion fixing heads (20) are mounted on the upper end and the lower end of the inner side of; the top shock absorption pad (24) is arranged at the top edge of the left and right fixed clamping grooves, a limiting groove (23) is arranged above the top shock absorption pad (24), mounting bolt holes (22) are formed in the lower portion of the limiting groove (23), and the tops of the clamping grooves and the tops of the brackets (15) on the two sides are connected with the I-shaped steel (26) through mounting bolts (25); the I-shaped steel (26) is provided with a Bailey beam (2), and a channel steel (11) is arranged above the Bailey beam (2); a shear support frame (56) is arranged between the adjacent steel pipe piles (1);

the steel reinforcement cage sinking and lengthening device comprises a sinking frame (29), a base fixing steel plate (27), an orifice protecting steel plate (30), a first clamping rod (32), a second clamping rod (33) and a detachable arc-shaped calibrating plate (36); the sinking frame (29) is of a square structure, through square through holes are formed in the upper part and the lower part of the sinking frame, and the sinking frame (29) is placed right above the steel casing (35); the four corners of the bottom of the sinking frame (29) are welded with base fixing steel plates (27) and fixed through fixing bolts (28), the four corners of the top end of the sinking frame (29) are welded with orifice protecting steel plates (30), the middles of the four sides of the upper end of the sinking frame (29) are respectively provided with a sinking frame clamping groove (31), a first clamping rod (32) and a second clamping rod (33) are arranged in the sinking frame clamping groove (31), the first clamping rod (32) and the second clamping rod (33) are provided with detachable arc-shaped calibrating plates (36), the first clamping rod (32) and the second clamping rod (33) penetrate through reinforcement cage stirrups (37) at the upper end of the lower reinforcement cage (34) to clamp and fix the reinforcement cage (34), and upper and lower reinforcement cage longitudinal reinforcements (38) are bound through the detachable arc-shaped calibrating plates (36);

mud pit classified filtration protector includes higher level steel protects a mud pit (43), a lower level steel protects a mud pit (62), protection net apron (44), mud guiding gutter (47) and collapsible screen cloth (49), protection net apron (44) that can open and shut are arranged to the mud pool mouth, an opening has been seted up on adjacent steel protects a mud pit one side, lower level steel protects a mud pit (62) opening than higher level steel and protects a mud pit (43) lowly, upper and lower level steel protects a mud pit opening and passes through mud guiding gutter (47) and connect, collapsible screen cloth (49) are arranged to lower level steel and protect a mud pit (62).

2. The underwater bored pile according to claim 1, wherein the slide rail (9) is an i-shaped slide rail.

3. The underwater cast-in-situ pile according to claim 1, wherein the outer sides of the left and right fixing clamping grooves are rounded corners, the brackets (15) are positioned at two sides of the clamping grooves, the top ends of the brackets (15) are provided with limiting grooves (23), and the lower parts of the limiting grooves (23) are provided with mounting bolt holes (22).

4. The underwater cast-in-situ pile as claimed in claim 1, wherein a clamping rod notch (39) is formed in the middle of the second clamping rod (33), and the clamping rod notch (39) is matched with the size of the first clamping rod (32); the surface of the clamping rod is provided with a rubber cushion layer (40).

5. The underwater cast-in-situ pile as claimed in claim 1, wherein the concave surface of the detachable arc-shaped calibration plate (36) faces the reinforcement cage (34), a plurality of rubber sleeves (41) are arranged at equal intervals on the concave surface, and the detachable arc-shaped calibration plate (36) is close to the reinforcement cage (34) and is fixed on the clamping rod through a base adjustable bolt device (42); the reinforcing cage longitudinal bar (38) is limited by the rubber sleeve (41) and is subjected to accurate butt joint binding, and the inner diameter of the rubber sleeve (41) is the same as the diameter of the reinforcing cage longitudinal bar (38).

6. The underwater cast-in-situ pile as claimed in claim 1, wherein the protective grid cover plate (44) is a hot-dip galvanized grid plate, the cover plate rotating shaft device (53) is welded on the side walls of the protective grid cover plate (44) and the upper-level steel casing mud pit (43), the cover plate rotating shaft device (53) is internally provided with a cover plate movable shaft (45), the opening and closing end of the protective grid cover plate (44) is welded with a lock catch (46), and a lock hole (54) on the lock catch (46) is connected through an iron wire or a lock chain.

7. The underwater cast-in-situ pile as claimed in claim 1, wherein the retractable screen (49) is supported by a screen framework (50) and a screen hoop (52), the screen framework (50) is centrally provided with a framework central shaft (48), and one end of the framework is connected with the hanging hook (51) by a chain lock buckle (55) and fixed on the wall of the steel protecting cylinder.

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