Salt-erosion-resistant prefabricated square pile mold and square pile structure thereof

Abstract

The application discloses a kind of anti-salt erosion prefabricated square pile mould and its square pile structure, it is related to concrete prefabricated component preparation technical field, including the main mould for prefabricated square pile, the end of the main mould is fixedly installed with auxiliary mould, the side surface of the auxiliary mould is slidably installed with side sealing plate, longitudinal slot is passed through and arranged in the inside of the side sealing plate, the outside of the side sealing plate is fixedly provided with plastic forming rubber sleeve, the auxiliary mould and the side sealing plate are sealed and wrapped in the outside of square pile end, the top of the auxiliary mould is slidably installed with limiting plug row, transverse slot is passed through and arranged in the side surface of the limiting plug row;L-shaped transverse insertion rod is passed through and installed in the side wall of the limiting plug row, longitudinal insertion rod is passed through and installed in the inside of the side sealing plate, the outside of the longitudinal insertion rod is fixedly installed with a plurality of plastic forming rods.The anti-salt erosion prefabricated square pile mould and its square pile structure disclosed by the application have the characteristics of high structural strength, high prefabrication convenience, and high production efficiency.

Description

Technical Field

[0001] This invention relates to the field of precast concrete component preparation technology, and in particular to a salt-corrosion resistant precast square pile mold and its square pile structure. Background Technology

[0002] Precast concrete square piles are a type of pile foundation material widely used in construction engineering. They are mainly used to compensate for unstable or poorly supported soil layers to support and stabilize buildings. They are usually precast in a factory and then transported to the construction site for installation. The main advantages of precast concrete square piles include high load-bearing capacity, small settlement deformation, and high construction efficiency.

[0003] Precast concrete square piles are connected on-site by welding or mechanical connection through pre-embedded connectors (such as end plates and steel plate sleeves). However, in salt-corrosion environments, the joints at the connection points of square piles are at serious risk of corrosion. Traditional solutions mainly involve applying heavy-duty anti-corrosion coatings (such as epoxy or fluorocarbon coatings) to the connectors in the factory, or performing secondary anti-corrosion wrapping after on-site connection. However, these methods significantly increase the complexity of the construction process in practice, and the actual anti-corrosion efficiency often fails to achieve the desired effect. Therefore, there is an urgent need for a mold and square pile structure that can enhance the overall anti-corrosion performance of the square pile connection from the source during the factory prefabrication stage. Summary of the Invention

[0004] This invention discloses a salt-corrosion resistant precast square pile mold and its square pile structure, aiming to solve the technical problems that the existing concrete square pile anti-corrosion technology is relatively backward, unable to effectively enhance the overall anti-corrosion performance of the square pile connection, and unable to prefabricate suitable components for square pile anti-corrosion in the factory.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A salt-corrosion resistant precast square pile mold includes a main mold for precasting square piles. A secondary mold is fixedly installed at the end of the main mold. A side sealing plate is slidably installed on the side of the secondary mold. A longitudinal slot is opened through the interior of the side sealing plate. A plastic sleeve is fixedly fitted to the outer side of the side sealing plate. The secondary mold and the side sealing plate are sealed and wrapped around the outer side of the end of the square pile. A limit plug is slidably installed on the top of the secondary mold. A transverse slot is opened through the side of the limit plug. An L-shaped transverse rod is installed through the side wall of the limit plug. A longitudinal rod is installed through the interior of the side sealing plate. Several plastic rods are fixedly installed on the outer side of the longitudinal rod.

[0007] A square pile structure prepared by a salt-corrosion resistant precast square pile mold includes a sleeve end at the end of the square pile, the outer perimeter of which is larger than that of the square pile. A grouting port is formed through the inside of the sleeve end, and several annular guide channels for improving the sealing of the square pile are formed on the inner wall of the sleeve end. A flow channel connects the grouting port and the several annular guide channels. A molded rubber sleeve is distributed on the inner side of the sleeve end and molded to form the annular guide channels. A transverse insert is inserted into the transverse slot to form the grouting port. The molded rod at the top of the longitudinal insert is inserted into the longitudinal slot to form the flow channel. Bolts are pre-embedded inside the sleeve end, and the exposed bolts connect and fix the sleeve end of the square pile to the foundation pile.

[0008] By incorporating a main mold structure with an additional auxiliary mold at the end, based on the traditional precast square pile manufacturing process and molds, and using the auxiliary mold in conjunction with side sealing plates and independently distributed plastic sleeves, the entire steel reinforcement skeleton is sealed and grouted. This results in an additional sleeve end structure with an internal annular diversion channel at the end of the formed square pile. After the workers complete the docking and installation of the square pile and the foundation pile, the sleeve end can be locked and fixed to the outside of the joint between the square pile and the foundation pile, thereby sealing the connection point and reducing external erosion. At the same time, by injecting sealing material into the annular diversion channel, the workers can use the expanding material to fill the joint between the square pile and the foundation pile for secondary corrosion protection. Furthermore, the use of precast structure to integrate the most vulnerable part of the connection significantly improves the ease of operation, functional versatility, and corrosion-resistant structural strength of the traditional manufacturing process.

[0009] By setting horizontal and vertical inserts on the top and inside the side sealing plate of the auxiliary mold, after the workers complete the main installation of the square pile mold, they use the horizontal and vertical inserts, which are spliced ​​and distributed in an L-shaped structure, to prepare the grouting port and flow channel structure in conjunction with the grouting pre-reserved by the workers. This makes it convenient for the workers to introduce sealing material into the annular diversion channel in the future, so as to maintain the integrity of the prepared square pile.

[0010] In a preferred embodiment, the top two sides of the limiting plug are symmetrically equipped with hanging ears, which are fixedly engaged with the interior of the sub-mold in the vertical direction. The contact ends of the hanging ears and the sub-mold are provided with fixing holes, and the limiting plug and the sub-mold are fixed by means of pins engaging the fixing holes.

[0011] By setting the sub-mold as a split structure, the limiting plug is fixedly installed on the top of the sub-mold using the hanging lugs and fixing holes to maintain the stability during the concrete pile pouring. After the workers complete the prefabrication of the concrete pile, the quick-release mechanism of the limiting plug facilitates the workers to cut the concrete pile, thereby maintaining the integrity of the equipment during construction.

[0012] In a preferred embodiment, the top of the main mold is hermetically covered with an upper cover plate, which is distributed on the top of the square pile. The end of the main mold is fixedly installed with an end mold, and the end mold is sleeved and fixed at the end of the square pile to shape the end of the square pile.

[0013] By providing an upper cover plate and an end mold structure at the top and end of the main mold, the sealed pouring of the square pile is completed by using the upper cover plate, and the shaping of the tip of the square pile is completed by using the end mold, thereby maintaining the operational perfection of the equipment.

[0014] As can be seen from the above, the anti-corrosion precast square pile mold and its square pile structure provided by the present invention have the following technical effects.

[0015] Based on the traditional precast square pile manufacturing process and mold, a main mold structure with an additional auxiliary mold at the end is provided. By using the auxiliary mold in cooperation with the side sealing plate and the shaping rubber sleeve distributed as an independent entity, the entire steel reinforcement cage is sealed and grouted, resulting in a socket end structure with an internal annular diversion channel generated additionally at the end of the formed square pile. First, the socket end can be clamped and fixed outside the joint of the square pile and the foundation pile, thereby sealing the connection point and reducing external erosion. At the same time, workers can inject sealing materials into the internal annular diversion channel, and use the expansion material to perform secondary filling and anti-corrosion on the joint of the square pile and the foundation pile, greatly improving the anti-corrosion ability and structural strength of the traditional square pile. Second, this mold uses a precast structure to integrally process the most vulnerable part of the connection, eliminating the need for secondary reinforcement of the connection between the square pile and the foundation pile during traditional construction, thereby greatly improving the operational convenience and functional diversity of the traditional manufacturing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure proposed by the present invention.

[0017] Figure 2 It is an exploded view of the overall structure proposed by the present invention.

[0018] Figure 3 It is proposed by the present invention Figure 2 The enlarged view of the structure at A in the figure.

[0019] Figure 4 It is a sectional view of the structure of the socket end from the first perspective proposed by the present invention.

[0020] Figure 5 It is a schematic diagram of the internal structure of the main mold proposed by the present invention.

[0021] Figure 6 It is proposed by the present invention Figure 5 The enlarged view of the structure at B in the figure.

[0022] Figure 7This is an exploded view of the side sealing plate structure proposed in this invention.

[0023] Figure 8 This is an exploded view of the limiting plug structure proposed in this invention.

[0024] Figure 9 This is an exploded view of the end structure of the main mold proposed in this invention.

[0025] Figure 10 This is a schematic diagram of the second-view cross-sectional structure of the socket end proposed in this invention.

[0026] In the diagram: 1. Main mold; 2. Connecting end; 201. Bolt; 3. Grouting port; 4. Annular guide channel; 5. Secondary mold; 501. Limiting insert; 5011. Horizontal slot; 502. Hanging lug; 503. Grouting port; 504. Fixing hole; 6. Side sealing plate; 601. Through port; 602. Longitudinal slot; 7. Molded sleeve; 8. Horizontal insert; 9. Longitudinal insert; 901. Molded rod; 10. Top cover plate; 11. End mold; 12. Flow channel. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] The salt-erosion resistant precast square pile mold and its square pile structure disclosed in this invention are mainly used in the scenario of concrete pouring and precasting of precast concrete square piles.

[0029] Reference Figures 1 to 10 The system includes a main mold 1 for precast square piles, a secondary mold 5 fixedly installed at the end of the main mold 1, a side sealing plate 6 slidably installed on the side of the secondary mold 5, a longitudinal slot 602 penetrating through the inside of the side sealing plate 6, and a plastic sleeve 7 fixedly fitted on the outside of the side sealing plate 6. The secondary mold 5 and the side sealing plate 6 are sealed and wrapped around the outside of the end of the square pile. A limit plug 501 is slidably installed on the top of the secondary mold 5, a transverse slot 5011 penetrating through the side of the limit plug 501, an L-shaped transverse plug 8 penetrating through the side wall of the limit plug 501, a longitudinal plug 9 penetrating through the inside of the side sealing plate 6, and several plastic rods 901 fixedly installed on the outside of the longitudinal plug 9.

[0030] The end of the square pile is provided with a sleeve end 2. The outer dimensions of the sleeve end 2 are larger than the outer dimensions of the square pile. A grouting port 3 is opened through the inside of the sleeve end 2. Several annular guide channels 4 are opened on the inner wall of the sleeve end 2 to improve the sealing of the square pile. A flow groove 12 is connected between the grouting port 3 and the several annular guide channels 4. A plastic sleeve 7 is distributed on the inner side of the sleeve end 2 and is molded to form an annular guide channel 4. A transverse insert 8 is inserted into a transverse slot 5011 to form a grouting port 3. A plastic rod 901 at the top of the longitudinal insert 9 is inserted into a longitudinal slot 602 to form a flow groove 12. Bolts 201 are pre-embedded and installed inside the sleeve end 2. The exposed bolts 201 connect and fix the sleeve end 2 of the square pile to the foundation pile.

[0031] In this embodiment: workers use a crane to hoist and place the steel reinforcement cage inside the main mold 1. At the same time, workers attach the plastic sleeve 7 to the outside of the side sealing plate 6. Then, workers fix the side sealing plate 6 to the outside of the auxiliary mold 5. After sealing and fixing the main mold 1, workers use a grouting machine to inject concrete grout into the interior of the auxiliary mold 5. The concrete grout will flow along the interior of the auxiliary mold 5 and the main mold 1 and wrap the entire steel reinforcement cage. During this process, workers vibrate the concrete grout. After the concrete has solidified, the end of the square pile will form a sleeve end 2, and the interior of the sleeve end 2 will form an annular guide channel 4.

[0032] In the above process, after the worker attaches the plastic sleeve 7 to the outside of the side sealing plate 6, the worker fixes the side sealing plate 6 to the outside of the sub-mold 5. At the same time, the worker inserts and fixes the plastic rods 901 of the two longitudinal inserts 9 inside the side sealing plate 6. Meanwhile, the worker inserts the two transverse inserts 8 into the transverse slots 5011 of the limiting insert 501, causing the transverse inserts 8 and the longitudinal inserts 9 to press and contact each other. Thus, when the worker pours concrete slurry into the sub-mold 5, a flow channel 12 connected to the annular guide channel 4 and the grouting port 3 can be prepared. Specifically, the transverse inserts 8 and the longitudinal inserts 9 can be fixed in position by bolts or other means. This is existing technology and will not be described in detail here.

[0033] The main mold 1 is sealed with an upper cover plate 10. The upper cover plate 10 is distributed on the top of the square pile. Before the workers pour concrete slurry into the main mold 1, the upper cover plate 10 needs to be covered to the top of the main mold 1 to maintain the sealing of the entire main mold 1. The end mold 11 is fixedly installed at the end of the main mold 1. The end mold 11 is sleeved and fixed to the end of the square pile to shape the end of the square pile, so that the end of the square pile generates a pyramid-shaped tip.

[0034] Specifically, bolts 201 are pre-embedded inside the socket end 2. The exposed bolts 201 connect and fix the square pile and the foundation pile. The side sealing plate 6 has a through opening 601 inside. When the workers install the side sealing plate 6, they need to make the bolts 201 pass through the through opening 601.

[0035] Reference Figure 2 , Figures 5 to 6 , Figures 8 to 9 In a preferred embodiment, the top two sides of the limiting plug 501 are symmetrically equipped with hanging ears 502. The hanging ears 502 are fixedly engaged in the interior of the sub-mold 5 in the vertical direction. The contact ends of the hanging ears 502 and the sub-mold 5 are provided with fixing holes 504. The limiting plug 501 and the sub-mold 5 are fixed by the locking pins cooperating with the fixing holes 504.

[0036] When placing the steel reinforcement cage of the square pile inside the main mold 1, the worker needs to remove the limiting plug 501 from the top of the auxiliary mold 5. After completing the installation of the steel reinforcement cage of the square pile, the worker aligns the hanging lug 502 on the top of the limiting plug 501 with the top of the auxiliary mold 5, and installs the limiting plug 501 back to the top of the auxiliary mold 5 in the vertical direction. At the same time, the worker uses the pin inserted into the fixing hole 504 to fix the limiting plug 501 and the auxiliary mold 5.

[0037] Specifically, the top of the limiting plug 501 is provided with a grouting port 503, through which grout is injected into the interior of the main mold 1.

[0038] Working principle: In use, the worker first removes the limiting plug 501 from the top of the sub-mold 5, then uses a crane to hoist the steel reinforcement cage and place it inside the main mold 1. At the same time, the plastic sleeve 7 is fitted onto the outside of the side sealing plate 6. The hanging lug 502 on the top of the limiting plug 501 is aligned with the top of the sub-mold 5, and the limiting plug 501 is installed back onto the top of the sub-mold 5 vertically. The pin is inserted into the fixing hole 504 to fix the limiting plug 501 and the sub-mold 5. After that, the worker fixes the side sealing plate 6 to the outside of the sub-mold 5, and inserts the plastic rods 901 of the two longitudinal plugs 9 into the inside of the side sealing plate 6, and then inserts the two transverse plugs... 8 is inserted into the transverse slot 5011 of the limiting insert 501, causing the transverse insert 8 and the longitudinal insert 9 to press and contact each other, covering the top of the main mold 1 with the upper cover plate 10, maintaining the sealing of the entire main mold 1. After that, the worker injects grout into the interior of the main mold 1 through the grouting port 503 until the concrete grout inside the main mold 1 solidifies and forms a square pile. When the worker cuts the square pile, the above steps are reversed to remove each component in sequence. During this period, the auxiliary mold 5 will prepare the sleeve end 2 along the end of the square pile, the transverse insert 8 will pre-fabricate the grouting port 3 inside the sleeve end 2, and the molding rod 901 of the longitudinal insert 9 will prepare the flow groove 12 (refer to...). Figure 4 and Figure 10 The plastic sleeve 7 will prefabricate an annular guide channel 4 inside the sleeve end 2. When the workers install the square pile, they need to use a crane to vertically suspend the square pile to the top of the foundation pile, so that the sleeve end 2 at the bottom of the square pile is vertically sleeved and fixed to the top of the foundation pile. The sleeve end 2 will cover the joint between the square pile and the foundation pile. At the same time, the workers can use an external pressure grouting equipment to align the grouting port 3, and use the grouting port 3 and the flow channel 12 to introduce the expanded sealing material into the interior of several annular guide channels 4, thereby further maintaining the sealing of the joint between the square pile and the foundation pile.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A salt-erosion resistant precast square pile mold, comprising a main mold (1) for precast square piles, characterized in that, The main mold (1) is fixedly installed with a secondary mold (5) at its end. A side sealing plate (6) is slidably installed on the side of the secondary mold (5). A longitudinal slot (602) is opened through the inside of the side sealing plate (6). A plastic sleeve (7) is fixedly fitted on the outside of the side sealing plate (6). The plastic sleeve (7) is located inside the secondary mold (5). The secondary mold (5) and the side sealing plate (6) are sealed and wrapped around the outside of the end of the square pile. An opening (601) is opened through the inside of the side sealing plate (6). The top of the sub-mold (5) is slidably installed with a limit plug (501), and a transverse slot (5011) is provided through the side of the limit plug (501). The side wall of the limiting plug (501) is fitted with an L-shaped transverse plug (8), and the inside of the side sealing plate (6) is fitted with a longitudinal plug (9). Several plastic rods (901) are fixedly installed on the outside of the longitudinal plug (9). The end of the square pile is prepared with a sleeve end (2). The outer dimension of the sleeve end (2) is larger than the outer dimension of the square pile. The inside of the sleeve end (2) is provided with a grouting port (3). The inner wall of the sleeve end (2) is provided with several annular guide channels (4) to improve the sealing of the square pile. The grouting port (3) and the several annular guide channels (4) are connected by a flow groove (12). The plastic sleeve (7) is distributed on the inner side of the sleeve end (2) and is molded to form the annular guide channel (4). The transverse insert (8) is inserted into the transverse slot (5011) to form a grouting port (3); The molding rod (901) at the top of the longitudinal insert (9) is inserted into the longitudinal slot (602) to form a flow groove (12); The socket end (2) is pre-embedded with bolts (201), which protrude from the inside of the opening (601). The exposed bolts (201) connect and fix the socket end (2) of the square pile to the foundation pile.

2. The salt-erosion-resistant precast square pile mold according to claim 1, characterized in that, The top of the main mold (1) is sealed with an upper cover plate (10), which is distributed on the top of the square pile.

3. The salt-erosion-resistant precast square pile mold according to claim 1, characterized in that, The end of the main mold (1) is fixedly installed with an end mold (11), which is sleeved and fixed to the end of the square pile to shape the end of the square pile.

4. The salt-erosion-resistant precast square pile mold according to claim 2, characterized in that, The top two sides of the limiting plug (501) are symmetrically equipped with hanging ears (502), and the hanging ears (502) are fixedly engaged in the interior of the sub-mold (5) in the vertical direction.

5. The salt-erosion-resistant precast square pile mold according to claim 4, characterized in that, The top of the limiting plug (501) is provided with a grouting port (503) for grouting injection into the interior of the main mold (1) through the grouting port (503).

6. The salt-erosion-resistant precast square pile mold according to claim 5, characterized in that, The contact ends of the ear piece (502) and the sub-mold (5) are provided with a fixing hole (504), and the limiting plug (501) and the sub-mold (5) are fixed by the pin cooperating with the fixing hole (504).

Images