Precast pile cap structure for platform-free underwater construction

Abstract

The utility model relates to the technical field of high pile beam slab wharf construction, and discloses a precast pile cap structure for platform-free underwater construction, which comprises a pile cap body, a pile foundation structure is arranged at the bottom of the pile cap body, the pile cap body is connected with the pile foundation structure through concrete grouting, and the pile cap body is connected with the pile foundation structure. The surface, close to the top, of the pile foundation structure is sleeved with a hoop mechanism, and the top of the hoop mechanism is attached to the pile cap body. According to the precast pile cap structure for platform-free underwater construction, the problems that in the prior art, no matter cast-in-place pile cap construction or precast pile cap construction is conducted, a construction platform needs to be erected in the construction process to serve as a supporting and bearing system of a pile beam, it is difficult to erect a platform at the end of a columnar pile beam, the construction efficiency is affected, and in addition, the construction cost is lowered are solved. In order to guarantee the construction quality, construction on the water surface needs to be carried out, so that the construction is greatly influenced by the water level, and the construction condition is harsh for a wharf pile cap structure close to the water surface.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pile beam-slab type dock construction, in particular to a prefabricated pile cap structure for platform-free underwater construction. Background Art

[0002] High-pile wharf is one of the three major structural forms of wharf construction and is widely used in my country. It uses piles and beams driven into the foundation to transmit the load of the superstructure to the deep foundation. After that, pile caps need to be set on the top of the piles and beams to bear the wharf itself. Therefore, the pile cap construction of high-pile wharf has important application value in the construction of marine engineering.

[0003] The pile cap structure of the high-pile beam slab wharf is constructed by a cast-in-place construction method and a prefabricated pile cap construction method. In the prior art, whether it is cast-in-place pile cap construction or prefabricated pile cap construction, a construction platform needs to be set up during the construction process as a supporting load-bearing system for the pile beam. It is difficult to build a platform at the end of the columnar pile beam, which affects the construction efficiency. In addition, in order to ensure the construction quality, it is also necessary to carry out construction on the water surface, so that the construction is greatly affected by the water level. For the wharf pile cap structure close to the water surface, the construction conditions are relatively harsh. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a prefabricated pile cap structure for platform-free underwater construction, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical scheme: a prefabricated pile cap structure for platform-free underwater construction, comprising: a pile cap body, a pile foundation structure is arranged at the bottom of the pile cap body, the pile cap body is connected to the pile foundation structure by concrete grouting, a clamping mechanism is sleeved on the surface of the pile foundation structure close to the top, the top of the clamping mechanism is fitted on the pile cap body, a grouting space is formed integrally by arranging a corrugated pipe inside the pile cap body, two grouting holes are arranged on the top of the pile cap body, and the two grouting holes pass into the grouting space, a water outlet hole is arranged on the side of the pile cap body, the inner wall of the water outlet hole penetrates the corrugated pipe to connect the grouting space with the outside, a load-bearing mechanism is arranged inside the pile cap body, the structure at the top of the load-bearing mechanism passes through the pile cap body and is screwed thereto, the structure at the bottom of the load-bearing mechanism is overlapped with the top of the pile foundation structure, and a pile core cage is integrally arranged on the top of the pile foundation structure.

[0006] Preferably, the clamping mechanism includes a first hoop piece and a second hoop piece, the first hoop piece and the second hoop piece are two steel structures combined and spliced, the sides of the first hoop piece and the second hoop piece are welded with reinforcing plates and closing plates, the first hoop piece and the second hoop piece are attached to each other through the closing plates and fixed with bolts, a lifting control ring is rotatably provided at the outer edge of the top of the first hoop piece and the second hoop piece, a lifting mechanism is screwed to the inner wall of the lifting control ring, a sponge is provided on the top of the lifting mechanism, and the sponge is attached to the bottom of the pile cap body.

[0007] Preferably, the lifting mechanism includes a first support plate and a second support plate, the first support plate and the second support plate are combined to form a ring structure, the bottoms of the first support plate and the second support plate are welded with limiting columns, the bottom ends of the limiting columns pass through the first hoop plate and the second hoop plate and are slidably connected thereto, a slot is provided at the joint of the second support plate, and an insert block is integrally provided at the joint of the first support plate, and the insert block is inserted into the inside of the slot.

[0008] Preferably, the tops of the first hoop piece and the second hoop piece are outwardly extending annular platforms, a slide groove is provided at the bottom of the annular platform near the outer edge, the lifting control ring is slidably connected to the inner wall of the slide groove, and the lifting control ring is two hoop rings integrated by bolts.

[0009] Preferably, the load-bearing mechanism includes an I-beam, which is overlapped on the top of the pile foundation structure, and two brackets are arranged on the I-beam. The tops of the brackets are connected with sliding rods and screw blocks in sequence. The surfaces of the sliding rods are slidably connected with limit plates, and the limit plates are welded in the pile core cage. The outer edge of the top of the screw block is screwed with an inner screw barrel, and the top of the inner screw barrel is integrally provided with a rotating rod, and the top of the rotating rod passes through the pile cap body and is provided with an adjusting cap.

[0010] Preferably, a strip groove and a spiral groove are respectively formed on the surface of the I-beam, and the two brackets are respectively slidably connected to the inner wall of the strip groove and spirally connected to the inner wall of the spiral groove.

[0011] Preferably, the portion of the pile core cage that exceeds the top of the pile foundation structure is vertically inserted into the grouting space inside the pile cap body.

[0012] Preferably, the top of the clamp mechanism is arranged horizontally, and the middle part of the clamp mechanism is attached to the surface of the pile foundation structure.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The prefabricated pile cap structure for platform-free underwater construction increases the bellows and the load-bearing mechanism inside the pile cap body, and utilizes the load-bearing mechanism to contact the top of the pile foundation structure inside the pile cap body, thereby playing a supporting effect. There is no need to build an external construction platform, which greatly saves construction steps and reduces the construction conditions of the high-pile wharf. In addition, during construction, the position of the load-bearing mechanism can be adjusted according to the specifications of the pile foundation structure and the deviation and elevation of the pile sinking, thereby fine-tuning the pile cap body, reducing the error after construction and improving the quality of the high-pile wharf construction.

[0015] 2. The prefabricated pile cap structure used for underwater construction without a platform uses a clamp mechanism to seal the joint between the bottom of the pile cap body and the pile foundation structure, so that the grouting space formed inside the pile cap body can be inserted into the grouting hole by a pipe, and concrete is injected into the grouting space, thereby combining the construction advantages of the prefabricated pile cap and the cast-in-place pile cap, and can be applied to construction below the water level without being affected by the water level. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the side section structure of the clamp mechanism of the utility model;

[0020] Figure 5 This is a schematic diagram of the disassembled structure of the clamp mechanism of the utility model;

[0021] Figure 6 This is a schematic diagram of the side section structure of the pile cap body of the utility model;

[0022] Figure 7 It is a schematic diagram of the side section structure of the load-bearing mechanism of the utility model.

[0023] In the figure: 1. pile cap body; 2. pile foundation structure; 3. clamping mechanism; 31. first hoop plate; 32. second hoop plate; 33. reinforcement plate; 34. tightening plate; 35. lifting control ring; 36. lifting mechanism; 361. first supporting plate; 362. second supporting plate; 363. limiting column; 364. slot; 365. plug; 37. sponge; 4. water outlet; 5. grouting hole; 6. load-bearing mechanism; 61. I-beam; 62. bracket; 63. limiting plate; 64. sliding rod; 65. screw block; 66. inner screw barrel; 67. rotating rod; 68. adjusting cap; 7. bellows; 8. pile core cage. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-7 A prefabricated pile cap structure for platform-free underwater construction comprises: a pile cap body 1, a pile foundation structure 2 is arranged at the bottom of the pile cap body 1, the pile cap body 1 is connected to the pile foundation structure 2 by concrete grouting, a clamping mechanism 3 is sleeved on the surface of the pile foundation structure 2 near the top, the top of the clamping mechanism 3 is fitted on the pile cap body 1, a grouting space is formed integrally inside the pile cap body 1 by arranging a bellows 7, two grouting holes 5 are arranged on the top of the pile cap body 1, and the two grouting holes 5 are passed into the grouting space, a water outlet hole 4 is arranged on the side of the pile cap body 1, the inner wall of the water outlet hole 4 penetrates the bellows 7 to connect the grouting space with the outside, a load-bearing mechanism 6 is arranged inside the pile cap body 1, the structure at the top of the load-bearing mechanism 6 passes through the pile cap body 1 and is screwed thereto, the structure at the bottom of the load-bearing mechanism 6 overlaps the top of the pile foundation structure 2, and a pile core cage 8 is integrally arranged on the top of the pile foundation structure 2.

[0026] Among them, the clamping mechanism 3 includes a first clamping piece 31 and a second clamping piece 32, the first clamping piece 31 and the second clamping piece 32 are two steel structures merged and spliced, the sides of the first clamping piece 31 and the second clamping piece 32 are welded with a reinforcing plate 33 and a tightening plate 34, the first clamping piece 31 and the second clamping piece 32 are fitted and fixed with bolts through the tightening plate 34, a lifting control ring 35 is rotatably arranged at the outer edge of the top of the first clamping piece 31 and the second clamping piece 32, a lifting mechanism 36 is screwed on the inner wall of the lifting control ring 35, a sponge 37 is arranged on the top of the lifting mechanism 36, the sponge 37 is fitted with the bottom of the pile cap body 1, and the clamping mechanism 3 is divided into two halves. When the pile cap body 1 is set on the pile foundation structure 2, the clamping mechanism 3 divided into two halves can be combined and clamped under the pile cap body 1 by bolts to close the lower opening of the grouting space that fits the pile cap body 1.

[0027] The lifting mechanism 36 comprises a first support piece 361 and a second support piece 362, which are combined to form a ring structure. The bottoms of the first support piece 361 and the second support piece 362 are both welded with a limiting column 363, the bottom ends of the limiting column 363 penetrate the first hoop piece 31 and the second hoop piece 32 and are slidably connected thereto, a slot 364 is provided at the joint of the second support piece 362, and an insert block 365 is integrally provided at the joint of the first support piece 361, and the insert block 365 is inserted into the inside of the slot 364. After the hoop mechanism 3 is clamped at the lower opening of the grouting space of the pile cap body 1, the lifting mechanism 36 is assembled into a whole, and the lifting mechanism 36 is controlled to rise by the rotation of the lifting control ring 35, so as to further improve the fit between the sponge 37 and the pile cap body 1, reduce the interaction of water penetrating the sponge 37 with the inside of the grouting space, and improve the setting speed and quality of concrete in the grouting space.

[0028] Among them, the top of the first hoop piece 31 and the second hoop piece 32 are annular platforms extending outward, and a sliding groove is provided at the bottom of the annular platform near the outer edge. The lifting control ring 35 is slidably connected with the inner wall of the sliding groove, and the lifting control ring 35 is two hoops integrated by bolts. The lifting control ring 35 is clamped on the first hoop piece 31 and the second hoop piece 32 by the sliding groove, while maintaining its rotation ability, avoiding the first hoop piece 31 and the second hoop piece 32 from falling off before splicing.

[0029] Among them, the load-bearing mechanism 6 includes an I-beam 61, which is overlapped on the top of the pile foundation structure 2. Two brackets 62 are arranged on the I-beam 61. The top of the bracket 62 is connected with a sliding rod 64 and a screw block 65 in sequence. The surface of the sliding rod 64 is slidably connected to a limit plate 63. The limit plate 63 is welded in the pile core cage 8. The outer edge of the top of the screw block 65 is screwed with an inner screw barrel 66. The top of the inner screw barrel 66 is integrally provided with a rotating rod 67. The top of the rotating rod 67 passes through the pile cap body 1 and is provided with an adjusting cap 68. By arranging the load-bearing mechanism 6 in the pile cap body 1, the load-bearing mechanism 6 is used to support the top of the pile foundation structure 2. During construction, the position of the load-bearing mechanism 6 can be adjusted according to the specifications of the pile foundation structure 2 and the deviation and elevation of the pile sinking.

[0030] Among them, the surface of the I-beam 61 is respectively provided with a strip groove and a spiral groove, and the two brackets 62 are respectively slidably connected with the inner wall of the strip groove and spirally connected with the inner wall of the spiral groove. During the fine-tuning process, the inclination of the I-beam 61 can be changed by adjusting the two brackets 62 respectively, thereby leveling the pile cap body 1.

[0031] Among them, the part of the pile core cage 8 that exceeds the top of the pile foundation structure 2 is vertically inserted into the grouting space inside the pile cap body 1. The pile core cage 8 is slightly different for the straight pile and the inclined pile structure. In order to ensure that the pile core cage 8 and the pile cap body 1 can be stably connected and to ensure construction operability, the exposed part of the inclined pile core cage 8 adopts a vertical arrangement.

[0032] Among them, the top of the hoop mechanism 3 is set horizontally, and the middle part of the hoop mechanism 3 is in contact with the surface of the pile foundation structure 2. The pile sinking operation is carried out according to the design requirements. After the pile sinking is completed, the deviation, slope, torsion angle and elevation of the pile position will have a certain deviation. The deviation of each pile position is measured separately, and the hoop mechanism 3 is set according to the corresponding situation, so that the contact between the top of the hoop mechanism 3 and the pile cap body 1 tends to be horizontal, thereby ensuring the fit between the hoop mechanism 3 and the pile cap body 1.

[0033] Working principle: When constructing an underwater high-pile wharf, first measure the deviation, slope, torsion angle and elevation of the pile foundation structure 2, then produce a clamping mechanism 3 with the corresponding inclination, and then adjust the pile core cage 8 to a vertical state, suspend the pile cap body 1 and install it on the pile foundation structure 2, then clamp the clamping mechanism 3 on the pile foundation structure 2 and fit it with the bottom of the pile cap body 1, and then use a pipe to inject concrete into the grouting space through the grouting hole 5. As the concrete increases, the water in the grouting space is discharged from the water outlet 4. When the grouting is completed, use a wooden plug to seal the water outlet 4 and the grouting hole 5.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated pile cap structure for underwater construction without a platform, characterized in that: include: A pile cap body (1), wherein a pile foundation structure (2) is arranged at the bottom of the pile cap body (1), the pile cap body (1) is connected to the pile foundation structure (2) by concrete grouting, a clamping mechanism (3) is sleeved on the surface of the pile foundation structure (2) near the top, the top of the clamping mechanism (3) is fitted on the pile cap body (1), a grouting space is integrally formed inside the pile cap body (1) by arranging a bellows (7), two grouting holes (5) are arranged on the top of the pile cap body (1), and the two grouting holes (5) are arranged on the top of the pile cap body (1). The grouting hole (5) leads into the grouting space. The side of the pile cap body (1) is provided with a water outlet hole (4). The inner wall of the water outlet hole (4) penetrates the corrugated pipe (7) to connect the grouting space with the outside. The pile cap body (1) is provided with a load-bearing mechanism (6). The structure at the top of the load-bearing mechanism (6) passes through the pile cap body (1) and is screwed thereto. The structure at the bottom of the load-bearing mechanism (6) overlaps the top of the pile foundation structure (2). The top of the pile foundation structure (2) is provided with a pile core cage (8) in an integrated manner.

2. The prefabricated pile cap structure for platform-free underwater construction according to claim 1, characterized in that: The clamping mechanism (3) comprises a first clamping piece (31) and a second clamping piece (32). The first clamping piece (31) and the second clamping piece (32) are two steel structures combined and spliced. The sides of the first clamping piece (31) and the second clamping piece (32) are welded with a reinforcing plate (33) and a tightening plate (34). The first clamping piece (31) and the second clamping piece (32) are attached to each other through the tightening plate (34) and are fixed by bolts. A lifting control ring (35) is rotatably provided at the outer edge of the top of the first clamping piece (31) and the second clamping piece (32). The inner wall of the lifting control ring (35) is screwed with a lifting mechanism (36). A sponge (37) is provided on the top of the lifting mechanism (36). The sponge (37) is attached to the bottom of the pile cap body (1).

3. The prefabricated pile cap structure for platform-free underwater construction according to claim 2, characterized in that: The lifting mechanism (36) comprises a first supporting plate (361) and a second supporting plate (362), wherein the first supporting plate (361) and the second supporting plate (362) are combined to form a ring structure, and the bottoms of the first supporting plate (361) and the second supporting plate (362) are both welded with a limiting column (363), and the bottom ends of the limiting columns (363) penetrate through the first hoop plate (31) and the second hoop plate (32) and are slidably connected thereto, and a slot (364) is provided at the joint of the second supporting plate (362), and an insert block (365) is integrally provided at the joint of the first supporting plate (361), and the insert block (365) is inserted into the inside of the slot (364).

4. The prefabricated pile cap structure for platform-free underwater construction according to claim 2, characterized in that: The tops of the first hoop piece (31) and the second hoop piece (32) are annular platforms extending outwards, and a slide groove is provided at the bottom of the annular platform near the outer edge. The lifting control ring (35) is slidably connected to the inner wall of the slide groove, and the lifting control ring (35) is two hoop rings integrated by bolts.

5. The prefabricated pile cap structure for platform-free underwater construction according to claim 1, characterized in that: The load-bearing mechanism (6) comprises an I-beam (61), the I-beam (61) being overlapped on the top of the pile foundation structure (2), two brackets (62) being arranged on the I-beam (61), the top of each bracket (62) being connected in sequence with a sliding rod (64) and a screw block (65), the surface of the sliding rod (64) being slidingly connected to a limit plate (63), the limit plate (63) being welded in the pile core cage (8), the outer edge of the top of the screw block (65) being screwed with an inner screw barrel (66), the top of the inner screw barrel (66) being integrally provided with a rotating rod (67), the top of the rotating rod (67) passing through the pile cap body (1) and being provided with an adjusting cap (68).

6. The prefabricated pile cap structure for platform-free underwater construction according to claim 5, characterized in that: The surface of the I-beam (61) is provided with a strip groove and a spiral groove, respectively, and the two brackets (62) are respectively slidably connected to the inner wall of the strip groove and spirally connected to the inner wall of the spiral groove.

7. The prefabricated pile cap structure for platform-free underwater construction according to claim 1, characterized in that: The portion of the pile core cage (8) that exceeds the top of the pile foundation structure (2) is vertically inserted into the grouting space inside the pile cap body (1).

8. The prefabricated pile cap structure for platform-free underwater construction according to claim 1, characterized in that: The top of the clamp mechanism (3) is arranged horizontally, and the middle of the clamp mechanism (3) is attached to the surface of the pile foundation structure (2).

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