Coastal wharf pile sinking and riprapping construction method

Abstract

The invention belongs to the technical field of wharf riprap, and particularly relates to a coastal wharf pile sinking and riprap construction method, which comprises the following steps of: fixing a protective positioning cylinder, arranging a holding cylinder structure and filling stones at one time before sinking a precast pile, and separating a pile sinking area among the stones through the protective positioning cylinder, so that the pile sinking positioning of the precast pile is not influenced by the stones; stone can enhance the stability of the protection positioning cylinder in the vertical state, so that the protection positioning cylinder is not prone to skew relative to the horizontal plane. After the precast pile is sunk, the protective positioning barrel becomes a primary fastening structure of the precast pile; performing stone secondary filling to form a secondary fastening structure; the first-stage fastening structure and the second-stage fastening structure are both used for enhancing the connecting stability of the precast pile and the stratum and providing stone anti-collision protection and water flow anti-scour protection for the precast pile. By means of the two stone filling steps and the multi-stage fastening structure, the problem of the construction sequence of coastal wharf pile sinking and riprap is solved, and the stability of the prefabricated pile in the vertical state is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of wharf riprap, and in particular relates to a coastal wharf pile sinking and riprap construction method. Background Art

[0002] A pier is a building at the seaside or riverside that is used for ships or ferries to berth, passengers to get on and off, and cargo to be loaded and unloaded. Some pier buildings need to be supported and fixed by piles, such as high-pile piers, which are connected to the upper pile platform or pedestal structure by setting multiple longitudinal or oblique piles on the stratum to form an integral structure. At the same time, riprap is used for protection on the shore; riprap is a measure used to dump larger stones to prevent river banks or structures from being washed away by water. It is generally used for roadbed slopes, slope toes, retaining walls, and slope protection that are often flooded and have a large water depth for foundation protection.

[0003] There are two existing implementation plans for the construction sequence of pile sinking and stone throwing: one is to sink the piles first, and then throw stones between the piles, but during the stone throwing process, the stone's own gravity, stone shape, and stone throwing force can easily cause the stones to collide and damage the piles; the other is to throw stones first, and then sink the piles between the stones, but this will increase the difficulty of pile positioning and sinking, and reduce the tightness between the stones and the piles, and weaken the protection of the stones to the stratum. Summary of the invention

[0004] The object of the present invention is to provide a coastal wharf pile sinking and riprap construction method, aiming to solve the above technical problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides a coastal wharf pile driving and riprap construction method, which is used for the precast pile driving and riprap construction of the coastal wharf; it comprises a protective positioning tube and a tube holding structure; the protective positioning tube is set as a straight circular tube with two ends passing through, the inner diameter of the protective positioning tube is equal to the outer diameter of the precast pile, and the length of the protective positioning tube is less than the length of the precast pile; the tube holding structure is connected by a plurality of first net frames to form a structure with a middle through hole, and the tube holding structure can be arranged around the outer peripheral side of the protective positioning tube through the middle through hole; the first net frame is set as an open structure on one side facing the middle through hole and the top; the coastal wharf pile driving and riprap construction method comprises the following steps:

[0006] S100, Preparation before precast pile sinking, including:

[0007] S110, protective positioning tube fixing:

[0008] Determine the initial sinking position of the precast pile; detect the stratum information of the initial sinking position, determine the sinking depth of the precast pile and the injection depth of the protective positioning tube, the injection depth of the protective positioning tube is less than the sinking depth of the precast pile; the injection depth of the protective positioning tube is sufficient to keep the protective positioning tube upright after being injected into the stratum, and make the height of the protective positioning tube above the stratum greater than the height of the holding tube structure and less than the height of the precast pile above the stratum after sinking; the stratum information at least includes rock and soil components and their respective proportions, bottom layer waterlogging conditions and stratum shrinkage.

[0009] Apply lubricating grease to the inner wall of the protective positioning cylinder; the lubricating grease is one or more of lithium-based grease, composite calcium sulfonate-based grease, and molybdenum disulfide grease;

[0010] The protective positioning cylinder is lifted vertically so that the vertical projection of the protective positioning cylinder is located at the initial pile sinking position; the bottom end of the protective positioning cylinder is vertically sunk to the pre-installed installation depth below the stratum by hammering or vibration, and the protective positioning cylinder is kept upright relative to the horizontal plane;

[0011] S120, tube holding structure layout:

[0012] A first mesh frame is arranged around the outer side wall of the protective positioning tube, and a plurality of first mesh frames are arranged to form a tube-embracing structure; a stone filling area is formed between the outer side wall of the protective positioning tube and the inner side wall of the tube-embracing structure;

[0013] S130, one-time filling of stone:

[0014] The stone filling area is filled with stones in layers and in batches, and the stones located inside the stone filling area are close to the outer wall of the protective positioning tube; during the filling process, the gaps between the stones are exposed by the vibration of the vibrating rod, and the stones are continuously filled into the gaps so that the stones are close to each other, thus completing the first filling of the stones; the stones filled in the first time are used to strengthen the stability of the upright state of the protective positioning tube;

[0015] S200, precast pile sinking:

[0016] The precast pile is lifted vertically and positioned through the protective positioning tube so that the vertical projection of the precast pile is located inside the protective positioning tube; the bottom of the precast pile is vertically sunk to the preset pile sinking depth below the ground by hammering or vibration, and the outer wall of the precast pile is closely attached to the inner wall of the protective positioning tube; the protective positioning tube becomes the primary fastening structure of the precast pile;

[0017] S300, stone secondary filling:

[0018] Fill the gaps between the stones exposed by the vibration of the precast pile sinking with stones; the cylindrical structure filled with stones for the second time becomes the secondary fastening structure of the precast pile; the stones for the first filling are one or more of massive granite, basalt, gneiss, limestone, and the size of the stones for the second filling is smaller than that of the stones for the first filling;

[0019] S400, repeating steps S100 to S300 to complete the precast pile sinking construction of the coastal wharf;

[0020] S500, Stone filling between tube structures:

[0021] Fill the ground between two adjacent tube structures with stones to complete the coastal wharf riprap construction.

[0022] Preferably, after step S300, fresh concrete is poured between the stones; the tube structure poured with fresh concrete becomes a three-level fastening structure of the precast pile, and the three-level fastening structure is used to fasten the stones to each other and to the protective positioning tube.

[0023] Preferably, the fresh concrete is poured in batches through the pipeline, and the next pouring is carried out after the fresh concrete of the previous pouring penetrates into the gaps between the stones; the fresh concrete covers the entire secondary fastening structure; wherein the water-powder ratio of the fresh concrete is adjusted so that it can enter the gaps between the stones.

[0024] Preferably, before step S100, a first screen frame design and processing are performed; the first screen frame design and processing includes the following steps:

[0025] The first net frame includes a bottom frame, a side frame and a cover connected to each other; the side frame is provided with a plurality of them; an edge of the bottom frame and an edge of the cover are both set to be arc-shaped;

[0026] Determine the preset number of first mesh frames and the outer circumference of the protective positioning tube; determine the arc length of the arc edge of the base frame and the cover, so that the arc length of the arc edge is equal to the ratio between the outer circumference of the protective positioning tube and the number of the first mesh frames; connect the side frame longitudinally to the edge of the base frame except the arc edge to form the side structure of the first mesh frame, the inner side of the first mesh frame is set as a stone abutment opening and the top is set as a stone filling opening.

[0027] Preferably, the arrangement of the tube-holding structure of S120 includes the following steps:

[0028] A preset number of first mesh frames are arranged around the outer periphery of the protective positioning tube, and each stone is close to the outer wall of the protective positioning tube; two adjacent first mesh frames are bundled, and several first mesh frames are connected to form a tube-embracing structure, and the stone filling area is formed;

[0029] In the stone primary filling step of S130 and the stone secondary filling step of S300, stones are filled into the stone filling area through the stone filling port;

[0030] After the stones in S300 are filled for the second time, the edges of the cover except the arc edge are tied and connected to the top edges of several side frames respectively to fix the stones in the stone filling area.

[0031] Preferably, the first mesh frame has three side frames, and the stone close-fitting opening can be opposite to the side frames; or, the first mesh frame has four side frames, and the stone close-fitting opening can be opposite to a corner of the first mesh frame.

[0032] Preferably, the step of filling stones between the tube structures in S500 includes a second mesh frame; filling the second mesh frame on the stratum between two adjacent tube structures; the side wall of the second mesh frame corresponds to the shape of the outer wall of the tube structure, so that the side wall of the second mesh frame is close to the side wall of the tube structure and the two are tied and connected; filling the second mesh frame with stones; sealing the second mesh frame to fix the stones inside it.

[0033] Preferably, the second mesh frame is made of a soft wire mesh structure made of one or more materials selected from polyester fiber, polypropylene, and nylon, so as to facilitate the filling of the second mesh frame and to be close to the holding tube structure.

[0034] Compared with the prior art, the above one or more technical solutions in the coastal wharf pile sinking and riprap construction method provided by the embodiment of the present invention have at least one of the following technical effects:

[0035] 1. Before the precast pile is sunk, the protective positioning tube is fixed, the holding tube structure is arranged and the stone is filled at one time. A pile sinking area is separated between the stones by the protective positioning tube, so that the sinking positioning of the precast pile is not affected by the stone. The stone can enhance the stability of the upright state of the protective positioning tube, making it difficult for the protective positioning tube to tilt relative to the horizontal plane, thereby improving the positioning accuracy of the protective positioning tube for the precast pile and the reliability of the precast pile sinking in the vertical direction;

[0036] After the precast pile is sunk, the protective positioning cylinder becomes the primary fastening structure of the precast pile. The primary fastening structure is used to strengthen the connection stability between the precast pile and the stratum, and provide stone collision protection and water flow protection for the ground part of the precast pile. The subsequent stone filling process will not directly contact and damage the precast pile, and the coastal seawater will not directly contact and corrode the precast pile.

[0037] The secondary filling of stones makes the tube structure a secondary fastening structure of the precast pile. The secondary fastening structure is used to strengthen the connection fastness between the precast pile and the stratum and the stability of the precast pile in its upright state.

[0038] 2. Pour fresh concrete into the secondary fastening structure to form the tertiary fastening structure of the precast pile, so that the stones are firmly connected to each other and to the protective positioning tube, so as to strengthen the fastening of the connection between the precast pile and the stratum and the stability of the upright state of the precast pile, and provide good waterproof ability and resistance to seawater scouring.

[0039] 3. The tube-holding structure is formed by bundling a number of first mesh frames. A middle through hole is provided in the middle of the tube-holding structure for the protective positioning tube to pass through. The inner coarse stone can be close to the outer wall of the protective positioning tube. Combined with the limiting effect of the tube-holding structure on the stone, the stone on the periphery of the protective positioning tube is not easy to loosen, thereby providing good support and stabilization for the protective positioning tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a flow chart of the construction method of pile sinking and riprap for coastal docks;

[0041] Figure 2 This is a schematic diagram of the steps for arranging the tube holding structure;

[0042] Figure 3 It is a schematic diagram of the steps of precast pile sinking;

[0043] Figure 4 This is a schematic diagram of the stone secondary filling steps;

[0044] Figure 5 A top view of an embodiment of a screen frame;

[0045] Figure 6 A top view of another embodiment of a screen frame;

[0046] In the figure:

[0047] 11. Prefabricated piles; 12. Protective positioning cylinders;

[0048] 2. Cylinder holding structure; 22. First net frame; 221. Bottom frame; 222. Side frame; 223. Cover; 224. Stone close opening; 225. Stone filling opening; 23. Stone filling area; 25. Second net frame. DETAILED DESCRIPTION

[0049] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0050] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0053] In a first embodiment of the present invention, a method for pile sinking and riprap construction of a coastal wharf is provided, which is used for pile sinking and riprap construction of precast piles 11 of a coastal wharf, and the precast piles 11 can be set as steel pipe piles or reinforced concrete piles; Figure 1-Figure 6 , including a protective positioning tube 12 and a tube holding structure 2; the protective positioning tube 12 is set as a straight round tube with two ends passing through, the inner diameter of the protective positioning tube 12 is equal to the outer diameter of the precast pile 11, and the length of the protective positioning tube 12 is less than the length of the precast pile 11; the tube holding structure 2 is connected by a plurality of first net frames 22 to form a structure with a central perforation, and the tube holding structure 2 can be arranged around the outer peripheral side of the protective positioning tube 12 through the central perforation; the first net frame 22 is set as an open structure on the side facing the central perforation and the top; the present invention includes the following steps:

[0054] S100, the preparation before the prefabricated pile 11 is sunk, including the following steps:

[0055] S110, fixing of protective positioning tube 12:

[0056] Determine the initial sinking position of the precast pile 11; detect the stratum information of the initial sinking position, determine the sinking depth of the precast pile 11 and the injection depth of the protective positioning tube 12, the injection depth of the protective positioning tube 12 is less than the sinking depth of the precast pile 11; the injection depth of the protective positioning tube 12 is sufficient to keep the protective positioning tube 12 upright after being injected into the stratum, and make the height of the protective positioning tube 12 above the stratum greater than the height of the tube-embracing structure 2 and less than the height of the precast pile 11 above the stratum after the pile is sunk, so as to facilitate the arrangement of the tube-embracing structure 2 and the sinking construction of the precast pile 11; the stratum information at least includes rock and soil components and their respective proportions, bottom layer waterlogging conditions and stratum shrinkage.

[0057] Apply lubricating grease to the inner wall of the protective positioning cylinder 12; the lubricating grease is one or more of lithium-based grease, composite calcium sulfonate-based grease, and molybdenum disulfide grease;

[0058] The protective positioning cylinder 12 is lifted vertically so that the vertical projection of the protective positioning cylinder 12 is located at the initial pile sinking position; the bottom end of the protective positioning cylinder 12 is vertically sunk to the pre-installed installation depth below the stratum by hammering or vibration, and the protective positioning cylinder 12 is kept upright relative to the horizontal plane;

[0059] S120, Layout of the tube structure 2:

[0060] A first mesh frame 22 is arranged around the outer wall of the protective positioning tube 12, and a plurality of first mesh frames 22 are arranged to form a tube-embracing structure 2; a stone filling area 23 is formed between the outer wall of the protective positioning tube 12 and the inner wall of the tube-embracing structure 2;

[0061] S130, one-time filling of stone:

[0062] The stone filling area 23 is filled with stones in layers in batches, and the stones located inside the stone filling area 23 are close to the outer wall of the protective positioning tube 12; during the filling process, the gaps between the stones are exposed by the vibration of the vibrating rod, and the stones are continuously filled into the gaps so that the stones are close to each other, thus completing the first filling of the stones; the stones filled once are used to strengthen the stability of the upright state of the protective positioning tube 12, so as to improve the positioning accuracy of the protective positioning tube 12 on the precast pile 11 and the reliability of the direction of the vertical sinking of the precast pile 11;

[0063] S200, precast pile 11 pile sinking:

[0064] The precast pile 11 is lifted vertically, and the precast pile 11 is positioned by the protective positioning tube 12, so that the vertical projection of the precast pile 11 is located inside the protective positioning tube 12; the bottom end of the precast pile 11 is vertically sunk to a preset pile sinking depth below the stratum by hammering or vibration, and the outer wall of the precast pile 11 is closely attached to the inner wall of the protective positioning tube 12; the protective positioning tube 12 becomes a primary fastening structure of the precast pile 11, and the primary fastening structure is used to strengthen the stability of the connection between the precast pile 11 and the stratum, and provide stone anti-collision protection and water flow anti-scouring protection for the ground part of the precast pile 11; it should be noted that the lubricating grease on the inner wall of the protective positioning tube 12 can reduce the friction coefficient between the precast pile 11 and the protective positioning tube 12, so as to facilitate the sinking of the precast pile 11;

[0065] S300, stone secondary filling:

[0066] During the sinking process of the precast pile 11, the stone material vibrates and a gap is exposed, and the gap is filled with stone material to complete the secondary filling of stone material; the tube structure 2 after the secondary filling of stone material becomes the secondary fastening structure of the precast pile 11, and the secondary fastening structure strengthens the connection fastening of the precast pile 11 and the stratum and the stability of the upright state of the precast pile 11 through two stone fillings;

[0067] Furthermore, the primary filling stone is set to be one or more of larger block granite, basalt, gneiss, limestone, and the secondary filling stone is set to be smaller rock particles, such as sandstone, so that the secondary filling stone can enter the gaps of the primary filling stone;

[0068] S400, repeating steps S100 to S300 to complete the pile sinking construction of the coastal wharf precast piles 11;

[0069] S500, stone filling of 2 compartments of tube structure:

[0070] Fill the ground between two adjacent tube structures 2 with stones to complete the coastal wharf riprap construction.

[0071] In another embodiment of the present invention, after step S300, fresh concrete is poured between the stones; the tube structure 2 poured with the fresh concrete becomes a three-level fastening structure of the precast pile 11, and the three-level fastening structure fastens the stones to each other and to the protective positioning tube 12 through concrete, thereby strengthening the fastening of the connection between the precast pile 11 and the stratum and the stability of the precast pile 11 in its upright state.

[0072] Furthermore, the fresh concrete is poured in batches through the pipeline, and the next pouring is carried out after the fresh concrete of the previous pouring penetrates into the gaps between the stones, so that the fresh concrete can completely enter between the stones and finally cover the entire secondary fastening structure; in particular, by increasing the water-powder ratio of the fresh concrete to increase its slump, the fresh concrete can smoothly enter the gaps between the stones.

[0073] In another embodiment of the present invention, before step S100, the first screen frame 22 is designed and processed; the first screen frame 22 design and processing includes the following steps:

[0074] The first net frame 22 includes a bottom frame 221, a side frame 222 and a cover 223 which are connected to each other; a plurality of side frames 222 are provided; an edge of the bottom frame 221 and an edge of the cover 223 are both designed to be arc-shaped;

[0075] Determine the preset number of the first net frames 22 and the outer perimeter of the protective positioning tube 12; determine the arc length of the arc edge of the base frame 221 and the cover 223, so that the arc length of the arc edge is equal to the ratio between the outer perimeter of the protective positioning tube 12 and the number of the first net frames 22; connect the side frame 222 longitudinally to the edge of the base frame 221 except the arc edge to form the side structure of the first net frame 22, the inner side of the first net frame 22 is set as a stone close opening 224 and the top is set as a stone filling opening 225;

[0076] The arrangement of the tube holding structure 2 of S120 includes the following steps:

[0077] A preset number of first mesh frames 22 are arranged around the outer periphery of the protective positioning tube 12, and each stone close-fitting opening 224 is close to the outer wall of the protective positioning tube 12; two adjacent first mesh frames 22 are bundled, and a plurality of first mesh frames 22 are connected to form a tube-embracing structure 2, and a stone filling area 23 is formed;

[0078] In the stone primary filling step of S130 and the stone secondary filling step of S300 , stones are filled into the stone filling area 23 through the stone filling port 225 .

[0079] Furthermore, after the second filling of the stones in S300 , the edges of the cover 223 except the arc edge are tied and connected to the top edges of a plurality of side frames 222 to fix the stones in the stone filling area 23 .

[0080] In another embodiment of the present invention, referring to Figure 5 and Figure 6 , providing two different polygonal structures of the first mesh frame 22: the side frames 222 of the first mesh frame 22 can be set to three or four, so that the stone close-fitting opening 224 can be opposite to the side frames 222 or to a corner of the first mesh frame 22, so that the first mesh frame 22 has different arrangements and bundling methods, which is convenient for selection as needed for construction; the first mesh frame 22 is made of hard wire mesh and has strong mechanical bearing capacity and durability.

[0081] In another embodiment of the present invention, referring to Figure 6 The step of filling the space between the two tube structures of S500 with stones includes: a second mesh frame 25; filling the second mesh frame 25 on the ground between two adjacent tube structures 2; the side wall of the second mesh frame 25 corresponds to the shape of the outer wall of the tube structure 2, so that the side wall of the second mesh frame 25 can be close to the side wall of the tube structure 2, and the two are tied and connected; filling the second mesh frame 25 with stones; sealing the second mesh frame 25 to fix the stones inside it.

[0082] Furthermore, the second mesh frame 25 adopts a soft wire mesh structure made of one or more materials selected from polyester fiber, polypropylene, and nylon, so as to facilitate filling the second mesh frame 25 into the stratum between two adjacent tube structures 2, and the stone can be close to the outer wall of the tube structure 2, so as to improve the production and filling efficiency of the second mesh frame 25 and improve the construction flexibility.

[0083] Except for the first embodiment, the undescribed parts in the remaining embodiments are the same as those in the first embodiment, and the unexplained features are all based on the explanations of the first embodiment.

[0084] The above content is a further detailed description of the present invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the scope of patent protection of the present invention determined by the submitted claims.

Claims

1. A method for pile sinking and riprap construction at a coastal wharf, used for precast pile sinking and riprap construction at a coastal wharf; characterized by: The invention comprises a protective positioning tube and a tube-holding structure; the protective positioning tube is set as a straight circular tube with two ends passing through, the inner diameter of the protective positioning tube is equal to the outer diameter of the precast pile, and the length of the protective positioning tube is less than the length of the precast pile; the tube-holding structure is connected by a plurality of first net frames to form a structure with a central perforation, and the tube-holding structure can be arranged around the outer peripheral side of the protective positioning tube through the central perforation; the first net frame is set as an open structure on one side facing the central perforation and the top; the coastal wharf pile sinking and riprap construction method comprises the following steps: S100, Preparation before precast pile sinking, including: S110, protective positioning tube fixing: Determine the initial sinking position of the precast pile; detect the stratum information of the initial sinking position, determine the sinking depth of the precast pile and the injection depth of the protective positioning tube, the injection depth of the protective positioning tube is less than the sinking depth of the precast pile; the injection depth of the protective positioning tube is sufficient to keep the protective positioning tube upright after being injected into the stratum, and make the height of the protective positioning tube above the stratum greater than the height of the holding tube structure and less than the height of the precast pile above the stratum after sinking; the stratum information at least includes rock and soil components and their respective proportions, bottom waterlogging conditions and stratum shrinkage; Apply lubricating grease to the inner wall of the protective positioning cylinder; the lubricating grease is one or more of lithium-based grease, composite calcium sulfonate-based grease, and molybdenum disulfide grease; The protective positioning cylinder is lifted vertically so that the vertical projection of the protective positioning cylinder is located at the initial pile sinking position; the bottom end of the protective positioning cylinder is vertically sunk to the pre-installed installation depth below the stratum by hammering or vibration, and the protective positioning cylinder is kept upright relative to the horizontal plane; S120, tube holding structure layout: A first mesh frame is arranged around the outer side wall of the protective positioning tube, and a plurality of first mesh frames are arranged to form a tube-embracing structure; a stone filling area is formed between the outer side wall of the protective positioning tube and the inner side wall of the tube-embracing structure; S130, one-time filling of stone: The stone filling area is filled with stones in layers and in batches, and the stones located inside the stone filling area are close to the outer wall of the protective positioning tube; during the filling process, the gaps between the stones are exposed by the vibration of the vibrating rod, and the stones are continuously filled into the gaps so that the stones are close to each other, thus completing the first filling of the stones; the stones filled in the first time are used to strengthen the stability of the upright state of the protective positioning tube; S200, precast pile sinking: The precast pile is lifted vertically and positioned through the protective positioning tube so that the vertical projection of the precast pile is located inside the protective positioning tube; the bottom of the precast pile is vertically sunk to the preset pile sinking depth below the ground by hammering or vibration, and the outer wall of the precast pile is closely attached to the inner wall of the protective positioning tube; the protective positioning tube becomes the primary fastening structure of the precast pile; S300, stone secondary filling: Fill the gaps between the stones exposed by the vibration of the precast pile sinking with stones; the cylindrical structure filled with stones for the second time becomes the secondary fastening structure of the precast pile; the stones for the first filling are one or more of massive granite, basalt, gneiss, limestone, and the size of the stones for the second filling is smaller than that of the stones for the first filling; S400, repeating steps S100 to S300 to complete the precast pile sinking construction of the coastal wharf; S500, Stone filling between tube structures: Fill the ground between two adjacent tube structures with stones to complete the coastal wharf riprap construction.

2. The coastal wharf pile sinking and riprap construction method according to claim 1 is characterized by: After step S300, fresh concrete is poured between the stones; the tube structure poured with fresh concrete becomes a three-level fastening structure of the precast pile, and the three-level fastening structure is used to fasten the stones to each other and to connect the stones to the protective positioning tube.

3. The method for pile sinking and riprap construction of a coastal wharf according to claim 2, characterized in that: The fresh concrete is poured in batches through the pipeline. The next pouring is carried out after the fresh concrete poured in the previous time penetrates into the gaps between the stones; so that the fresh concrete covers the entire secondary fastening structure; Among them, the water-powder ratio of the fresh concrete is adjusted so that it can enter the gaps between the stones.

4. The coastal wharf pile sinking and riprap construction method according to claim 1 is characterized by: Before step S100, the first screen frame design and processing are performed; the first screen frame design and processing include the following steps; The first net frame includes a bottom frame, a side frame and a cover connected to each other; the side frame is provided with a plurality of them; an edge of the bottom frame and an edge of the cover are both set to be arc-shaped; Determine the preset number of the first screen frame and the outer perimeter of the protective positioning tube; Determine the arc length of the arc edge of the base frame and the cover so that the arc length of the arc edge is equal to the ratio between the outer circumference of the protective positioning tube and the number of the first mesh frames; connect the side frame longitudinally to the edge of the base frame except the arc edge to form a side structure of the first mesh frame, the inner side of the first mesh frame is set as a stone abutment opening and the top is set as a stone filling opening.

5. The coastal wharf pile sinking and riprap construction method according to claim 4 is characterized by: The S120 tube holding structure arrangement includes the following steps: A preset number of first mesh frames are arranged around the outer periphery of the protective positioning tube, and each stone is close to the outer wall of the protective positioning tube; two adjacent first mesh frames are bundled, and several first mesh frames are connected to form a tube-embracing structure, and the stone filling area is formed; In the step of the first stone filling at S130 and the second stone filling at S300, stones are filled into the stone filling area through the stone filling port; After the S300 stones are filled for the second time, the edges of the cover except the arc edge are tied and connected to the top edges of several side frames respectively to fix the stones in the stone filling area.

6. The coastal wharf pile sinking and riprap construction method according to claim 1 is characterized by: The first mesh frame has three side frames, and the stone abutment opening is opposite to the side frames; or, the first mesh frame has four side frames, and the stone abutment opening is opposite to a corner of the first mesh frame.

7. The coastal wharf pile sinking and riprap construction method according to claim 1 is characterized by: The S500 step of filling stones between the tube structures includes a second mesh frame; filling the second mesh frame on the stratum between two adjacent tube structures; the side wall of the second mesh frame corresponds to the shape of the outer wall of the tube structure, so that the side wall of the second mesh frame is close to the side wall of the tube structure and the two are tied and connected; filling the second mesh frame with stones; sealing the second mesh frame to fix the stones inside it.

8. The method for pile sinking and riprap construction of a coastal wharf according to claim 7, characterized in that: The second screen frame adopts a soft wire mesh structure made of one or more materials of polyester fiber, polypropylene, and nylon, which is convenient for filling the second screen frame and being close to the holding tube structure.

Images