A high-pile wharf formwork support system, system and construction method

Abstract

This invention relates to the field of wharf construction technology, and particularly to a high-pile wharf formwork support system, its structure, and construction method. The support system includes a pile body and support components. At least one side of the pile body has a recessed hole, within which a fishtail bolt is installed. The tail of the fishtail bolt penetrates the bottom of the recessed hole and extends into the pile body. A connecting nut is installed within the recessed hole, and the connecting nut is threadedly connected to at least a portion of the fishtail bolt remaining in the recessed hole. The connecting nut is also threadedly connected to an extension structure, which protrudes from the pile body and connects to the support components. This invention provides a high-pile wharf formwork support system that allows the connecting nut and extension structure to be removed with minimal damage to the pile body through a screwing method. It also enables convenient and low-cost embedding of the fishtail bolt within the pile body, thereby severing the connection between the fishtail bolt and the outside environment, reducing the probability of rust channels forming between the inside and outside of the pile body, and extending the service life of the pile body and the high-pile wharf.

Description

Technical Field

[0001] This invention relates to the field of wharf construction technology, and in particular to a high-pile wharf formwork support system, system, and construction method. Background Technology

[0002] High-pile wharves use pile foundations to support the superstructure and transfer the loads of the superstructure and wharf surface to the depths of the foundation. In the construction of high-pile wharves, the pile foundations are constructed first, and then the superstructure is constructed on the pile foundations. There are usually horizontal and vertical beams between the superstructure and the pile foundations. The horizontal and vertical beams mainly serve to transfer the loads of the superstructure and can connect the various piles.

[0003] In some construction conditions, the horizontal and vertical beams are constructed using cast-in-place methods. Cast-in-place construction requires pre-laying formwork on the pile foundation, and to maintain the relative stability of the formwork, it needs to be fixedly connected to the pile body. In existing connection schemes, bolts or steel plates are pre-embedded in the pile body to support the bottom formwork, which in turn supports other formwork. These pre-embedded parts are typically made of steel, with one end extending into the pile body and the other end exposed to air or seawater. This easily creates rust channels connecting the pile body. Without treatment, rust from seawater or air can corrode the internal reinforcing steel through these channels, causing structural failure and severely impacting the pile's service life. To mitigate corrosion, complex rust prevention measures are required for the pre-embedded parts, significantly increasing construction costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the problem in the prior art that embedded parts are prone to forming rust channels, affecting the service life of the pile or increasing construction costs, and to provide a high-pile wharf formwork support system, system and construction method.

[0005] In a first aspect, the present invention provides a high-pile wharf formwork support system, comprising piles and support components;

[0006] The pile body has a concave hole on at least one side, and a fishtail bolt is installed in the concave hole. The tail of the fishtail bolt penetrates the bottom of the concave hole and extends into the pile body. A connecting nut is installed in the concave hole, and the connecting nut is threadedly connected to at least a portion of the fishtail bolt remaining in the concave hole. The connecting nut is also threadedly connected to an extension structure, which protrudes from the pile body and is connected to the support assembly. The fishtail bolt has a first connecting hole along its axial direction, and the extension structure has a second connecting hole that is opposite to the first connecting hole. The connecting bolt passes through the second connecting hole and is connected to the first connecting hole. The nut of the connecting bolt abuts against the surface of the extension structure.

[0007] This invention provides a high-pile wharf formwork support system. A connecting nut connects a fishtail bolt and an extended structure. The extended structure protrudes from the pile body for easy connection to the support assembly. The tail of the fishtail bolt is anchored within the pile body, providing a large anchoring force for the support assembly. The connecting nut is threaded to both the fishtail bolt and the extended structure. After use, the connecting nut and extended structure can be removed with minimal damage to the pile body by unscrewing. A first connecting hole is provided in the fishtail bolt, and a second connecting hole is provided in the extended structure. The connecting bolt passes through both the first and second connecting holes, ensuring a stable connection. By increasing the connection strength between the extended structure and the fishtail bolt based on the nut connection, the length of the connecting nut can be reduced while meeting the connection strength requirements, thus reducing damage to the overall integrity and strength of the pile and making it easier to remove the connecting nut. Since the fishtail bolt is completely located in the concave hole, the concave hole can be sealed by grouting, which is convenient and low-cost to embed the fishtail bolt in the pile body, thereby cutting off the connection between the fishtail bolt and the outside world, reducing the probability of the formation of rust channels connecting the inside and outside of the pile body, thereby slowing down the corrosion rate of the steel inside the pile body and extending the service life of the pile body and the high pile wharf.

[0008] Preferably, the connecting nut is a frustum nut, including a large end and a small end, the small end being close to the bottom of the concave hole and the large end being close to the opening of the concave hole.

[0009] The outer diameter of the larger end is larger than that of the smaller end. Install the smaller end with the bottom of the concave hole facing inward to facilitate removal and takeout of the connecting nut.

[0010] Preferably, the connecting nut has a connecting channel, which includes a first internal thread and a second internal thread distributed axially. The first internal thread is connected to the fishtail bolt, and the second internal thread is connected to the outward extension structure.

[0011] Preferably, the large end face is provided with a twisting groove, and at least two twisting grooves are arranged circumferentially along the connecting channel, with one end of the twisting groove connected to the connecting channel.

[0012] Preferably, the end face of the large end is flush with the side face of the pile body.

[0013] Preferably, the tail of the fishtail bolt has at least two forked tails that open to each other.

[0014] Preferably, the sidewall of the first connecting hole is a threaded surface, the sidewall of the second connecting hole is a smooth surface, a portion of the outer peripheral surface of the connecting bolt is provided with external threads, and the connecting bolt is threadedly connected to the first connecting hole.

[0015] Preferably, the support assembly includes an end plate and a transverse support member, one end of the transverse support member being connected to the end plate, the end plate having a through hole, the through hole being fitted onto the extended structure, and the end plate abutting against the side of the pile body; and:

[0016] The extended structure is a bolted component, and the nut of the extended structure presses and fixes the end plate.

[0017] or,

[0018] It also includes a locking element, which is connected to the extension structure and presses to fix the end plate.

[0019] Preferably, the support assembly further includes a longitudinal support member, which is mounted on at least two transverse support members spaced longitudinally apart; a reinforcing assembly is provided between the transverse support member and the end plate, the reinforcing assembly including at least two vertical reinforcing members, the vertical reinforcing members connecting the end plate and the bottom of the transverse support member.

[0020] Preferably, the reinforcement assembly further includes at least two of the transverse reinforcement members, which connect the end plate and the side of the transverse support member.

[0021] Preferably, the lower ends of the end plate are chamfered.

[0022] Chamfering can alleviate stress concentration at both ends of the lower part of the end plate, reducing the probability of end plate damage.

[0023] In a second aspect, the present invention provides a high-pile wharf formwork support system, including a formwork and the high-pile wharf formwork support system as described above, wherein the formwork is at least partially supported by the support components.

[0024] This invention provides a high-pile wharf formwork support system. Based on the high-pile wharf formwork support system described above, a stable support structure can be installed at a predetermined position on the pile to support the formwork, and then the beam is cast in place on the pile through the formwork. The structure adopts a connecting nut to connect the fishtail bolt and the extended structure. After the casting is completed, the connecting nut and the extended structure can be removed by screwing with minimal damage to the pile. Since the fishtail bolt is completely located in the concave hole, the concave hole can be sealed by grouting, which can conveniently embed the fishtail bolt in the pile body, thereby cutting off the connection between the fishtail bolt and the outside world, reducing the probability of the formation of rust channels connecting the inside and outside of the pile body, thereby slowing down the corrosion rate of the steel inside the pile body and extending the service life of the pile body and the high-pile wharf.

[0025] Preferably, the template includes two template units that are opposite to each other and fixed by tension. The template units are supported on the support assembly. Each template unit includes an inner mold arranged continuously in the longitudinal direction and base members arranged at intervals in the longitudinal direction. The base members are located outside the inner mold. Tie rods connect the base members on both sides.

[0026] In a third aspect, the present invention provides a method for constructing longitudinal beams of a high-pile wharf, based on the high-pile wharf formwork support system described above, wherein the pile body is a pile cap, and includes the following method:

[0027] S1. Assemble and connect the fishtail bolt, connecting nut, connecting bolt, and extension structure; arrange the assembly in the preset position, and pour the pile body so that the fishtail bolt and connecting nut are embedded in the pile body;

[0028] S2. Install a support assembly on the extended structure, and construct the longitudinal beam using the support assembly;

[0029] After the longitudinal beam construction is completed, the supporting components will be removed.

[0030] S3. Unscrew and remove the connecting bolt, unscrew and remove the extension structure, unscrew and remove the connecting nut;

[0031] S4. Grouting to seal and plug the gap left by the removal of the extended structure and connecting nut in the recessed hole.

[0032] This invention provides a construction method for the longitudinal beam of a high-pile wharf. Based on the high-pile wharf formwork support system described above, the combination of fish-tail bolts, connecting nuts, connecting bolts, and overhanging structures is poured simultaneously with the pile body. This can improve the interlocking force between the combination and the pile body, providing a stable foundation for the construction of the longitudinal beam. After the longitudinal beam construction is completed, the connecting bolts, overhanging structures, and connecting nuts are removed by screwing, and the gaps in the concave holes are sealed by grouting. This can cut off the connection between the fish-tail bolts and the outside world, reduce the probability of the formation of rust channels connecting the inside and outside of the pile body, thereby slowing down the corrosion rate of the steel inside the pile body and extending the service life of the pile body and the high-pile wharf.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] 1. This invention provides a high-pile wharf formwork support system, in which a connecting nut connects a fishtail bolt and an extended structure. The extended structure protrudes from the pile body for easy connection to the support assembly. The tail of the fishtail bolt is anchored within the pile body, providing a large anchoring force for fixing the support assembly. The connecting nut, fishtail bolt, and extended structure are all threadedly connected. After use, the connecting nut and extended structure can be removed by unscrewing with minimal damage to the pile body. A first connecting hole is provided in the fishtail bolt, and a second connecting hole is provided in the extended structure. The connecting bolt passes through the first and second connecting holes. By increasing the connection strength between the extended structure and the fishtail bolt based on the connection nut connection, the length of the connection nut can be reduced while meeting the connection strength requirements, thus reducing damage to the overall integrity and strength of the pile and making it easier to remove the connection nut. Since the fishtail bolt is completely located in the concave hole, the concave hole can be sealed by grouting, which is a convenient and low-cost way to embed the fishtail bolt in the pile body. This cuts off the connection between the fishtail bolt and the outside world, reduces the probability of the formation of rust channels connecting the inside and outside of the pile body, and thus slows down the corrosion rate of the steel inside the pile body, extending the service life of the pile body and the high pile wharf.

[0035] 2. The present invention provides a high-pile wharf formwork support system. Based on the high-pile wharf formwork support system described above, a stable support structure can be installed at a predetermined position on the pile to support the formwork, and then the beam is cast in place on the pile through the formwork. The structure adopts a connecting nut to connect the fishtail bolt and the extended structure. After the casting is completed, the connecting nut and the extended structure can be removed by screwing with minimal damage to the pile. Since the fishtail bolt is completely located in the concave hole, the concave hole can be sealed by grouting, which can conveniently embed the fishtail bolt in the pile body, thereby cutting off the connection between the fishtail bolt and the outside world, reducing the probability of the formation of rust channels connecting the inside and outside of the pile body, thereby slowing down the corrosion rate of the steel inside the pile body and extending the service life of the pile body and the high-pile wharf.

[0036] 3. The present invention provides a construction method for the longitudinal beam of a high-pile wharf. Based on the high-pile wharf formwork support system described above, the combination of fish-tail bolts, connecting nuts, connecting bolts and overhanging structures is poured simultaneously with the pile body. This can improve the interlocking force between the combination and the pile body, providing a stable foundation for the construction of the longitudinal beam. After the longitudinal beam construction is completed, the connecting bolts, overhanging structures and connecting nuts are removed by screwing, and the gaps in the concave holes are sealed by grouting. This can cut off the connection between the fish-tail bolts and the outside world, reduce the probability of the formation of rust channels connecting the inside and outside of the pile body, thereby slowing down the corrosion rate of the steel inside the pile body and extending the service life of the pile body and the high-pile wharf. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the high-pile wharf formwork support system described in this invention;

[0038] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0039] Figure 3 This is a schematic diagram of the structure of the connecting assembly described in this invention (connecting bolts omitted);

[0040] Figure 4 This is a schematic diagram of the structure of the connection component described in this invention;

[0041] Figure 5 This is a side view of the connecting nut described in this invention;

[0042] Figure 6 This is a front view of the connecting nut described in this invention;

[0043] Figure 7 This is a side view of the end plate and transverse support member described in this invention;

[0044] Figure 8 This is a top view of the end plate and transverse support member described in this invention;

[0045] Figure 9 This is a front view of the end plate and transverse support member described in this invention;

[0046] Figure 10 This is a schematic diagram of the template structure described in Example 2;

[0047] Figure 11 This is a top view of the high-pile wharf formwork support system described in this invention;

[0048] Figure 12 This is a schematic diagram of the grouting and sealing process of the high-pile wharf formwork support system described in this invention;

[0049] Figure 13 for Figure 12 Enlarged view of section B in the middle.

[0050] Marked in the image:

[0051] 1-Connecting components;

[0052] 11-Fishtail bolt;

[0053] 111-Fork tail; 112-First connecting hole;

[0054] 12-Extended structure;

[0055] 121 - Second connecting hole;

[0056] 13-Connecting nut;

[0057] 131-Connecting channel; 132-Large end; 133-Small end; 134-Screwing groove;

[0058] 14 - Connecting bolts;

[0059] 2-Supporting components;

[0060] 21-End plate;

[0061] 211-Through hole; 212-Fixing nut; 213-Lower flange; 214-Web plate; 215-Chamfer;

[0062] 22- Lateral support component;

[0063] 221 - Vertical reinforcement component; 222 - Horizontal reinforcement component;

[0064] 23-Longitudinal support member;

[0065] 3-Template;

[0066] 31-Internal mold;

[0067] 32-Base component;

[0068] 33 - Pair of pull rods;

[0069] 4-Pile body;

[0070] 41-Concave hole;

[0071] 5-Longitudinal beam. Detailed Implementation

[0072] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0073] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0074] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0075] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing between identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0076] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0077] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0078] Example 1

[0079] Please see Figures 1-10This embodiment provides a high-pile wharf formwork support system, including a pile body 4, a connecting component 1, and a support component 2. The support component 2 is fixed to the pile body 4 via the connecting component 1. The connecting component 1 includes a fish-tail bolt 11, a connecting nut 13, and an overhanging structure 12. At least one side of the pile body 4 has a recessed hole 41. A fish-tail bolt 11 is installed in the recessed hole 41, with its tail penetrating the bottom of the recessed hole 41 and extending into the pile body 4. A connecting nut 13 is installed in the recessed hole 41, and the connecting nut 13 is threadedly connected to at least a portion of the fish-tail bolt 11 remaining in the recessed hole 41. The connecting nut 13 is also threadedly connected to the overhanging structure 12, which protrudes from the pile body 4 and is connected to the support component 2.

[0080] The pile body 4 can be a supporting pile structure for a high-pile wharf. The pile body 4 can be a pile foundation, such as an end-bearing pile or a friction pile, or it can be a pile cap located at the upper end of the pile foundation. The pile body 4 can be a concrete structure. The fishtail bolt 11 is embedded inside the pile body 4. The fishtail bolt 11 can be pre-set inside the pile body 4 before pouring the concrete of the pile body 4, so that the fishtail bolt 11 can be securely embedded in the pile body 4.

[0081] The support component 2 is fixed to the pile body 4 through the connecting component 1. The support component 2 can be used to support at least part of the weight of the formwork 3 and transfer this part of the weight to the pile body 4 through the connecting component 1. The support component 2 can be a truss structure formed by steel combination. Its function is to form a support structure that can stably support the formwork 3 at the designed position around the pile body 4, so as to form a beam by casting the formwork 3 on the top or side of the pile body 4. The other part of the weight of the formwork 3 can be directly supported by the pile body 4.

[0082] The connecting component 1 includes a detachable fishtail bolt 11 and an overhanging structure 12. In this embodiment, the detachable connection means that when in the connected state, the fishtail bolt 11 and the overhanging structure 12 can form a connected whole and jointly support the weight of the supporting component 2 and the template 3. In the later stage of construction, the overhanging structure 12 can be separated from the embedded fishtail bolt 11, that is, the overhanging structure 12 can be removed from the pile body 4. At this time, a concave hole 41 will be formed on the pile body 4 due to the removal of the overhanging structure 12 and the connecting nut 13. One end of the concave hole 41 is connected to the outside, and the other end is connected to the fishtail bolt 11. The concave hole 41 can be sealed by grouting, so that the outer surface of the pile body 4 is still covered by concrete or mortar, reducing or avoiding the formation of rust channels connecting the inside and outside of the pile body 4, slowing down the corrosion of the steel inside the pile body 4, thereby improving the service life of the pile body 4 and the high pile wharf.

[0083] The fish-tail bolt 11 can be a rigid component made of steel. The fish-tail bolt 11 being embedded within the pile body 4 means that it is completely located inside the pile body 4 in its designed state. On one hand, embedding it within the pile body 4 provides a large embedding force to support the support assembly 2, formwork 3, and cast-in-place beam. On the other hand, after removing the protruding structure 12, sealing the remaining holes isolates the fish-tail bolt 11 from the outside, preventing corrosive agents from seawater from entering the pile body 4 along with the fish-tail bolt 11. One end of the protruding structure 12 is detachably connected to the fish-tail bolt 11, and the other end extends out of the pile body 4 to connect with the support assembly 2. The protruding structure 12 can be removed from the pile body 4 by screwing. To reduce the impact of the extraction process on the pile body 4, the cross-sectional dimensions of the protruding structure 12 can gradually decrease in the direction away from the fish-tail bolt 11, or remain unchanged.

[0084] The connecting nut 13 can be embedded in the pile body 4 along with the fishtail bolt 11, and the end face of one end of the connecting nut 13 is exposed in the pile body 4 to facilitate the removal of the connecting nut 13.

[0085] In some embodiments, the fishtail bolt 11 is provided with a first connecting hole 112 along its axial direction, the extension structure 12 is provided with a second connecting hole 121 that is opposite to the first connecting hole 112, the connecting bolt 14 passes through the second connecting hole 121 and is connected to the first connecting hole 112, and the nut of the connecting bolt 14 abuts against the surface of the extension structure 12.

[0086] The first connecting hole 112 is provided on the head of the fishtail bolt 11, and the second connecting hole 121 is provided on the extended structure 12. The first connecting hole 112 has an opening facing the concave hole 41, which is opposite to one opening of the second connecting hole 121. The other opening of the second connecting hole 121 faces the outside of the pile body 4. The first connecting hole 112 is arranged along the axial direction of the fishtail bolt 11, and the second connecting hole 121 is collinear with the axial direction of the first connecting hole 112. The connecting bolt 14 can extend into the second connecting hole 121 from the outward opening of the second connecting hole 121, and extend into the first connecting hole 112 from the opening of the first connecting hole 112 opposite to the other opening of the second connecting hole 121.

[0087] By connecting the bolt 14 through the extended structure 12 and into the connecting fishtail bolt 11, the connection strength between the fishtail bolt 11 and the extended structure 12 can be increased based on the connecting nut 13. On the other hand, under the condition of meeting the strength requirements, the threaded connection section between the connecting nut 13 and the fishtail bolt 11 and the extended structure 12 can be reduced, the length of the connecting nut 13 can be shortened, the depth of the concave hole 41 can be reduced, the damage of the concave hole 41 to the integrity and strength of the pile body 4 can be reduced, and it is also easier to remove the connecting nut 13.

[0088] Preferably, the nut of the connecting bolt 14 abuts against the surface of the extended structure 12, and the connecting bolt 14 is threadedly connected to the first connecting hole 112. Through the nut abutment and threaded connection, the connecting bolt 14 can connect the extended structure 12 and the fishtail bolt 11.

[0089] This embodiment provides a high-pile wharf formwork support system. A connecting nut 13 connects a fishtail bolt 11 and an extension structure 12. The extension structure 12 protrudes from the pile body 4, facilitating connection to the support assembly 2. The tail of the fishtail bolt 11 is anchored within the pile body 4, providing a large anchoring force for the support assembly 2. The connecting nut 13 is threaded to both the fishtail bolt 11 and the extension structure 12. After use, the connecting nut 13 and the extension structure 12 can be removed by unscrewing with minimal damage to the pile body 4. A first connecting hole 112 is provided in the fishtail bolt 11, and a second connecting hole 121 is provided in the extension structure 12. A connecting bolt 14 passes through the first connecting hole 112 and the extension structure 12. The second connecting hole 121 increases the connection strength between the extended structure 12 and the fishtail bolt 11 based on the connection of the connecting nut 13. It can reduce the length of the connecting nut 13 while meeting the connection strength requirements, reduce the damage to the integrity and strength of the pile body 4, and make it easier to remove the connecting nut 13. Since the fishtail bolt 11 is completely located in the concave hole 41, the concave hole 41 can be sealed by grouting, which can conveniently and cost-effectively embed the fishtail bolt 11 in the pile body 4, thereby cutting off the connection between the fishtail bolt 11 and the outside world, reducing the probability of the formation of rust channels connecting the inside and outside of the pile body 4, thereby slowing down the corrosion rate of the steel inside the pile body 4 and extending the service life of the pile body 4 and the high pile wharf.

[0090] Preferably, the sidewall of the first connecting hole 112 is a threaded surface, the sidewall of the second connecting hole 121 is a smooth surface, and the outer peripheral surface of the connecting bolt 14 is provided with external threads, and the connecting bolt 14 is threadedly connected to the first connecting hole 112.

[0091] In one or more preferred embodiments, the connecting nut 13 is a frustum nut, including a large end 132 and a small end 133, with the small end 133 near the bottom of the concave hole 41 and the large end 132 near the opening of the concave hole 41.

[0092] The outer diameter of the large end 132 is larger than the outer diameter of the small end 133. The small end 133 is installed facing the bottom of the concave hole 41, which makes it easy to remove and take out the connecting nut 13.

[0093] Preferably, the outer diameter of the connecting nut 13 gradually decreases from the large end 132 to the small end 133, and the sidewall of the concave hole 41 fits against the outer wall of the connecting nut 13.

[0094] Preferably, the connecting nut 13 has a connecting channel 131, which includes an axially distributed first internal thread and a second internal thread. The first internal thread is connected to the fishtail bolt 11, and the second internal thread is connected to the extension structure 12.

[0095] Please see Figures 3-6 One end of the fishtail bolt 11 can extend into the connecting channel 131 and be threaded into the connecting nut 13. One end of the extension structure 12 can extend into the connecting channel 131 and be threaded into the connecting nut 13, thereby enabling a detachable connection between the fishtail bolt 11 and the extension structure 12 through the connecting nut 13. The connecting nut 13 is threaded into the extension structure 12, and the extension structure 12 can be removed from the connecting nut 13 by screwing on the extension structure 12. The connecting nut 13 is threaded into the fishtail bolt 11, and the connecting nut 13 can be removed from the fishtail bolt 11 by screwing on the connecting nut 13, thus making it easier to remove the extension structure 12 and the connecting nut 13.

[0096] More preferably, the large end 132 end face is provided with a twisting groove 134, and at least two twisting grooves 134 are arranged circumferentially along the connecting channel 131, with one end of the twisting groove 134 connected to the connecting channel 131.

[0097] Please see Figures 5-6 The screw groove 134 is a groove-shaped structure recessed below the end face of the large end 132. The screw groove 134 can be engaged with a tool to assist in rotating the connecting nut 13. Preferably, there are two screw grooves 134, and the two screw grooves 134 are arranged opposite to each other. One end of the screw groove 134 is connected to the side wall of the connecting channel 131. The two screw grooves 134 arranged opposite to each other can be engaged with a strip tool.

[0098] More preferably, the end face of the large end 132 is flush with the side of the pile body 4; this facilitates the subsequent installation of the end plate 21.

[0099] More preferably, the tail of the fishtail bolt 11 has at least two forked tails 111 that are open to each other.

[0100] The open fork tail 111 can increase the contact area between the fishtail bolt 11 and the concrete of the pile body 4, thereby increasing the anchoring strength between the fishtail bolt 11 and the pile body 4, so that the fishtail bolt 11 can provide sufficient connection force to fix the support component to the pile body 4.

[0101] In one or more preferred embodiments, the support component 2 includes an end plate 21 and a transverse support member 22. One end of the transverse support member 22 is connected to the end plate 21. The end plate 21 is provided with a through hole 211. The through hole 211 is sleeved on the extension structure 12. The end plate 21 is attached to the side of the pile body 4.

[0102] Please see Figure 1 , Figure 2 , Figures 7-9 The end plate 21 is a rigid plate, and the transverse support 22 can be a steel section or a truss structure, etc. The end plate 21 is provided with several through holes 211. The through holes 211 are fitted onto the extension structure 12. External threads are provided on the extension section of the extension structure 12, and locking parts 212, such as fixing nuts, are fitted on the extension section. The end plate 21 can be fastened to the outer surface of the pile body 4 by tightening the locking parts 212.

[0103] In another embodiment, the extension structure 12 is a bolt with a nut at one end, which can be screwed into the connecting nut 13 and the end plate 21 is fixed by pressing the nut.

[0104] The end plate 21 can have 4 through holes 211, and the 4 through holes 211 are arranged in an array.

[0105] One end of the transverse support member 22 is fixedly connected to the end plate 21. The transverse support member 22 extends laterally in the horizontal direction to increase the size of the support assembly 2 in the horizontal direction, so as to more stably support the template 3. It should be noted that in this embodiment, the direction parallel to the horizontal direction and perpendicular to the transverse direction is defined as longitudinal, and the direction perpendicular to the horizontal direction is defined as vertical. The fishtail bolt 11 and the outward structure 12 are distributed on both sides of the transverse direction of the pile body 4.

[0106] Preferably, the support assembly 2 further includes a longitudinal support member 23, which is mounted on at least two transverse support members 22 spaced longitudinally.

[0107] Please see Figure 1 , Figure 11 The longitudinal support member 23 can be an I-beam. The longitudinal support member 23 is erected on several transverse support members 22 that are spaced apart along the longitudinal direction. The formwork 3 can be located on the longitudinal support member 23. The weight of the formwork 3 and the cast-in-place beam can be transferred to the transverse support members 22 through the longitudinal support member 23, and then to the pile body 4. The longitudinal support member 23 can be symmetrically arranged on both sides of the pile body 4.

[0108] Preferably, a reinforcing assembly is provided between the transverse support 22 and the end plate 21. The reinforcing assembly includes at least two vertical reinforcing members 221, which connect the end plate 21 and the bottom of the transverse support 22.

[0109] The vertical reinforcement member 221 can be a right-angled triangle plate. One right-angled side of the vertical reinforcement member 221 is attached to the end plate 21, and the other right-angled side is attached to the bottom of the horizontal support member 22, thereby enhancing the vertical connection strength between the horizontal support member 22 and the end plate 21.

[0110] More preferably, the reinforcement assembly further includes at least two lateral reinforcement members 222, which connect the end plate 21 and the side of the lateral support member 22.

[0111] The transverse reinforcement 222 can also be a right-angled triangle plate. One right-angled side of the transverse reinforcement 222 is attached to the end plate 21, and the other right-angled side is attached to the side of the transverse support 22, thereby enhancing the longitudinal connection strength between the transverse support 22 and the end plate 21.

[0112] In some embodiments, the transverse support 22 is an H-beam, such as... Figures 7-9 As shown, at least two vertical stiffeners 221 and at least two horizontal stiffeners 222 are connected between the transverse support 22 and the end plate 21. Both the vertical stiffeners 221 and the horizontal stiffeners 222 are rigid plates. The vertical stiffeners 221 are connected between the lower flange 213 of the transverse support 22 and the end plate 21, which can increase the vertical load-bearing capacity of the transverse support 22. The horizontal stiffeners 222 are connected between the web 214 of the transverse support 22 and the end plate 21, which can increase the longitudinal bending resistance of the transverse support 22 and improve the stability of the transverse support 22.

[0113] More preferably, the lower ends of the end plate 21 are provided with chamfers 215.

[0114] Please see Figure 9 The chamfer 215 can alleviate the stress concentration at both ends of the lower part of the end plate 21 and reduce the probability of damage to the end plate 21.

[0115] Example 2

[0116] This embodiment provides a high-pile wharf formwork support system, including a formwork 3 and a high-pile wharf formwork support system as described in Embodiment 1, wherein the formwork 3 is at least partially supported by the support component 2.

[0117] This embodiment provides a high-pile wharf formwork support system. Based on the above-mentioned high-pile wharf formwork support system, a stable support structure can be installed at a predetermined position on the pile body 4 to support the formwork 3. Then, the beam body is cast in place on the pile body 4 through the formwork 3. The structure adopts the connection nut 13 to connect the fish-tail bolt 11 and the external structure 12. After the pouring is completed, the connection nut 13 and the external structure 12 can be removed by screwing with less damage to the pile body 4. Since the fish-tail bolt 11 is completely located in the concave hole 41, the concave hole 41 can be sealed by grouting to conveniently embed the fish-tail bolt 11 in the pile body 4, thereby cutting off the connection between the fish-tail bolt 11 and the outside world, reducing the probability of the formation of rust channels connecting the inside and outside of the pile body 4, thereby slowing down the corrosion rate of the steel inside the pile body 4 and extending the service life of the pile body 4 and the high-pile wharf.

[0118] Preferably, the template 3 includes two template units that are opposite to each other and fixed by tension. The template units are supported on the support assembly 2. The template unit includes an inner mold 31 that is continuously arranged in the longitudinal direction and a base member 32 that is spaced apart in the longitudinal direction. The base member 32 is located outside the inner mold 31. The tie rod 33 connects the base members 32 on both sides.

[0119] Please see Figure 1 , Figure 2 The template unit includes an inner mold 31 arranged continuously along the longitudinal direction and base members 32 arranged at intervals. The inner mold 31 defines the casting area for casting to form the longitudinal beam 5. The base members 32 are located on the outer side of the inner mold 31. Tie rods 33 connect the base members 32 on both sides to fix the template units on both sides. The base members 32 can be vertically arranged I-beams, and the inner mold 31 can be composed of steel sections. The lower ends of both the base members 32 and the inner mold 31 can be supported on the support assembly 2.

[0120] Example 3

[0121] This embodiment provides a high-pile wharf formwork support system. Based on embodiment 2, the difference between embodiment 2 and embodiment 2 is that: the formwork 3 includes a bottom formwork and a side formwork. The bottom formwork is located on both sides of the upper surface of the pile body 4. The bottom formwork and the upper surface of the pile body 4 can jointly form the bottom formwork of the longitudinal beam 5. The side formwork is located on the side of the bottom formwork. The support component 2 can support the bottom formwork, and then support the side formwork connected to the bottom formwork.

[0122] Example 4

[0123] This embodiment provides a construction method for the longitudinal beams of a high-pile wharf, based on the high-pile wharf formwork support system described in Embodiment 1, wherein the pile body 4 is a pile cap arranged on the pile foundation; the method includes the following:

[0124] S1. Assemble the connecting fishtail bolt 11, connecting nut 13, connecting bolt 14 and the overhanging structure 12, and set an isolation layer on the outside of the connecting nut 13; arrange the assembly in the preset position, pour the pile body 4, so that the fishtail bolt 11 and connecting nut 13 are embedded in the pile body 4.

[0125] S2. Install support assembly 2 on the overhanging structure 12, and use support assembly 2 to construct longitudinal beam 5;

[0126] After the construction of longitudinal beam 5 is completed, remove support component 2;

[0127] S3. Unscrew and remove the connecting bolt 14, unscrew and remove the extension structure 12, and unscrew and remove the connecting nut 13;

[0128] S4. Grouting and sealing the gap in the recessed hole 41 left after removing the protruding structure 12 and connecting nut 13, such as Figure 12 , Figure 13 As shown.

[0129] This embodiment provides a construction method for the longitudinal beam of a high-pile wharf. Based on the high-pile wharf formwork support system described above, the combination of fish-tail bolts 11, connecting nuts 13, connecting bolts 14, and overhanging structures 12 is poured simultaneously with the pile body 4. This can improve the interlocking force between the combination and the pile body 4, providing a stable foundation for the construction of the longitudinal beam 5. After the construction of the longitudinal beam 5 is completed, the connecting bolts 14, overhanging structures 12, and connecting nuts 13 are removed by screwing, and the gaps in the concave holes 41 are sealed by grouting. This can cut off the connection between the fish-tail bolts 11 and the outside world, reduce the probability of the formation of rust channels connecting the inside and outside of the pile body 4, thereby slowing down the rate of corrosion of the steel inside the pile body 4 and extending the service life of the pile body 4 and the high-pile wharf.

[0130] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-pile wharf formwork support system, characterized by, The pile body (4) and the support assembly (2); The pile body (4) is provided with an inner recess hole (41) on at least one side, the inner recess hole (41) is provided with a fish tail bolt (11), the tail of the fish tail bolt (11) penetrates the bottom of the inner recess hole (41) and extends into the pile body (4), the inner recess hole (41) is provided with a connecting nut (13), the connecting nut (13) is threadedly connected with at least a part of the fish tail bolt (11) remaining in the inner recess hole (41), and the connecting nut (13) is further threadedly connected with an outward structure (12) protruding from the pile body (4) and connected with the support assembly (2); The fish tail bolt (11) is provided with a first connecting hole (112) in the axial direction, the outward structure (12) is provided with a second connecting hole (121) opposite to the first connecting hole (112), a connecting bolt (14) penetrates the second connecting hole (121) and is connected with the first connecting hole (112), and the nut of the connecting bolt (14) abuts against the surface of the outward structure (12).

2. The high-pile wharf formwork support system according to claim 1, wherein, The connecting nut (13) is a circular truncated cone nut including a large end (132) and a small end (133), the small end (133) is close to the bottom of the inner recess hole (41), and the large end (132) is close to the opening of the inner recess hole (41).

3. The high-pile wharf formwork support system according to claim 2, wherein, The connecting nut (13) is provided with a connecting channel (131), the connecting channel (131) includes a first internal thread and a second internal thread distributed in the axial direction, the first internal thread is connected with the fish tail bolt (11), and the second internal thread is connected with the outward structure (12).

4. The high-pile wharf formwork support system according to claim 3, wherein: The end surface of the large end (132) is provided with a screw groove (134), and at least two screw grooves (134) are arranged in the circumferential direction of the connecting channel (131), and one end of the screw groove (134) communicates with the connecting channel (131); and / or, The end surface of the large end (132) is flush with the side surface of the pile body (4); and / or, The tail of the fish tail bolt (11) has at least two forked tails (111) that are open to each other; and / or, The side wall of the first connecting hole (112) is a threaded surface, the side wall of the second connecting hole (121) is a smooth surface, and the outer periphery of the connecting bolt (14) is provided with an external thread, and the connecting bolt (14) is threadedly connected with the first connecting hole (112).

5. The high-pile wharf formwork support system according to claim 1, wherein, The support assembly (2) includes an end plate (21) and a transverse support (22), one end of the transverse support (22) is connected with the end plate (21), the end plate (21) is provided with a through hole (211), the through hole (211) is sleeved on the outward structure (12), and the end plate (21) abuts against the side surface of the pile body (4); and The outward structure (12) is a bolt, and the nut of the outward structure (12) extrudes and fixes the end plate (21); or, Further comprising a locking member (212) connected with the outrigger structure (12) and extruding and fixing the end plate (21).

6. The high-pile wharf formwork support system according to claim 5, wherein, The support assembly (2) further comprises longitudinal supports (23) erected on at least two of the transverse supports (22) spaced longitudinally. The transverse support (22) and the end plate (21) are provided with a reinforcing assembly comprising at least two vertical reinforcing members (221) connecting the end plate (21) and the bottom of the transverse support (22).

7. The high-pile wharf formwork support system according to claim 6, characterized in that: The reinforcing assembly further comprises at least two lateral reinforcing members (222) connecting the end plate (21) and the lateral edges of the transverse support (22). And / or, The lower part of the end plate (21) is provided with chamfers (215) at both ends.

8. A high-pile wharf formwork support system, characterized by, The formwork (3) is at least partially supported on the support assembly (2).

9. The high-pile wharf formwork support system according to claim 8, wherein, The formwork (3) comprises two formwork units oppositely and fixedly connected, which are supported on the support assembly (2) and comprise an inner form (31) arranged continuously in the longitudinal direction and a base member (32) arranged spaced apart in the longitudinal direction, the base member (32) being located outside the inner form (31); a tie rod (33) connecting the base members (32) on both sides.

10. A method for constructing a high-pile wharf girder, characterized by, Based on the high-pile wharf formwork support system according to any one of claims 1-7, the pile body (4) is a pile cap, comprising the following method: S1. Assemble the fish tail bolt (11), the connecting nut (13), the connecting bolt (14) and the outrigger structure (12); arrange the combination at a predetermined position, pour the pile body (4), and embed the fish tail bolt (11) and the connecting nut (13) in the pile body (4); S2. Install the support assembly (2) on the outrigger structure (12) and use the support assembly (2) to construct the longitudinal beam (5); After the construction of the longitudinal beam (5) is completed, the support assembly (2) is removed; S3. Unscrew the connecting bolt (14), unscrew the outrigger structure (12), and unscrew the connecting nut (13); S4. Grouting is used to block the gap of the inner recess (41) left by the removal of the outrigger structure (12) and the connecting nut (13).

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