Cast-in-place box girder support structure and design method thereof

Abstract

The invention relates to a cast-in-place box girder support structure and a design method thereof, and belongs to the technical field of cast-in-place box girder construction.The cast-in-place box girder support structure is provided with a pressing assembly, and when seabed undercurrent surges in the direction of a pressing rod, the pressing rod can slide in the direction close to a supporting rod under the acting force of the seabed undercurrent; the pressing disc is arranged in the hollow groove, then the connecting rod connected with the pressing disc is driven to flow in the direction close to the rotating groove, then the volume in the pressing space is compressed, and the pressing space is filled with hydraulic oil difficult to compress, so that the hydraulic oil exerts acting force on the pressing disc, and the pressing disc moves towards the top of the supporting rod in the axis direction of the hollow groove; in addition, the larger the acting force of the undercurrent on the pressing rod is, the larger the sliding distance of the pressing rod is, the higher the lifting height of the pressing disc is, the overall gravity center of the supporting rod is lower, and the stability of the supporting rod for resisting the impact of the undercurrent can be better improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cast-in-place box girder construction, and particularly relates to a cast-in-place box girder support structure and a design method thereof. Background Art

[0002] When constructing cast-in-place box girders for large-span bridges, it is necessary to erect scaffolding. The most common cast-in-place box girder scaffolding is a full-span scaffolding. The full-span scaffolding requires foundation treatment to ensure that the foundation bearing capacity meets the requirements and prevent uneven settlement of the foundation.

[0003] For example, the invention patent with patent application publication number: CN117802903A discloses a cast-in-place box girder support, including a plurality of support units distributed along the bridge direction of the cast-in-place box girder, the support units include a plurality of PHC pipe piles distributed laterally along the cast-in-place box girder, a pedestal is fixedly provided on the top of the PHC pipe pile, a first steel pipe pile is provided on the top of the pedestal, the first steel pipe piles are connected to each other through a connecting support, a unloading sand box is provided on the top of the first steel pipe pile, a distribution beam is provided on the unloading sand box, and a Bailey beam is provided on the distribution beam.

[0004] Based on the search of patent application publication numbers and the shortcomings found therein:

[0005] One of the design challenges of existing box girder support structures built at sea is that they need to penetrate deep into the seabed and stably withstand possible undercurrent impacts. At present, the widely adopted technical strategy is to significantly increase the bottom weight of the support to lower the center of gravity of the overall structure, thereby improving its stability against undercurrent impacts. However, although this design idea is effective, it also introduces significant cost issues: in order to ensure sufficient stability to withstand the potential maximum undercurrent impact, it is often necessary to excessively increase the bottom weight of the support, which inevitably leads to a huge consumption of support construction materials and a sharp increase in costs. Therefore, when optimizing the design of offshore box girder support structures, it is urgent to explore new technical means or innovative design methods to achieve more efficient anti-undercurrent performance while effectively controlling and reducing manufacturing costs, so as to achieve dual optimization of economic benefits and safety performance. Summary of the invention

[0006] To solve the problem, the currently widely used technical strategy is to significantly increase the bottom weight of the support to lower the center of gravity of the overall structure, thereby improving its stability against the impact of submarine undercurrents. However, although this design idea is effective, it also introduces significant cost issues: in order to ensure sufficient stability to resist the potential maximum undercurrent impact, it is often necessary to excessively increase the bottom weight of the support, which inevitably leads to a great consumption of support construction materials and a sharp increase in costs. The present invention provides a cast-in-place box beam support structure and a design method thereof.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A cast-in-place box girder support structure, comprising a support rod coaxially provided with a hollow groove, the support rod being vertically arranged on the seabed, and also comprising a pressing assembly and a hydraulic assembly, the pressing assembly comprising a pressing plate, a pressing rod, a connecting rod, a pressing spring and a rotating plate, the hydraulic assembly comprising hydraulic oil, the rotating plate coaxially provided with a rotating groove, the rotating plate being rotatably arranged on the seabed, the support rod being coaxially rotatably sealed in the rotating groove, the pressing plate being slidably sealed in the hollow groove, the rotating plate also being provided with a sliding groove, the central axis direction of the sliding groove being aligned with the central axis direction of the rotating groove The directions are arranged perpendicular to each other, the sliding groove and the rotating groove are connected to each other, the connecting rod is slidably and sealedly arranged in the sliding groove, the pressing plate divides the hollow groove into a first space and a second space from top to bottom in sequence, the connecting rod divides the sliding groove into a third space and a fourth space, the second space, the third space and the rotating groove form a pressing space, and the hydraulic oil is filled in the pressing space; the pressing rod is slidably and vertically arranged on the top surface of the rotating plate, the bottom of the pressing rod is connected to the top of the connecting rod, and the pressing spring is respectively connected to the pressing rod and the rotating plate.

[0009] As a preferred technical solution of the present invention, the pressing assembly also includes a sealing ring, a square groove is provided on the top surface of the rotating disk, one end of the square groove is communicated with the sliding groove, and the central axis of one end of the square groove is arranged parallel to the central axis of the sliding groove, the sealing ring can be slidably and sealedly arranged in the square groove, the sealing ring has a sealing groove, and the sealing groove is sealedly connected to the part of the connecting rod located in the square groove.

[0010] As a preferred technical solution of the present invention, the inner diameter of the hollow groove is larger than the inner diameter of the sliding groove.

[0011] As a preferred technical solution of the present invention, the support rod is also coaxially provided with an oil delivery groove ring, and the hydraulic assembly further includes a first one-way valve and a second one-way valve, the inner diameter of the oil delivery groove ring is larger than the inner diameter of the hollow groove, the oil delivery groove ring and the hollow groove are respectively connected to the rotating groove, the first one-way valve seal is arranged at the connection between the hollow groove and the rotating groove, the second one-way valve seal is arranged at the connection between the oil delivery groove ring and the rotating groove, the oil delivery groove ring is filled with hydraulic oil, the hydraulic oil in the oil delivery groove ring flows toward the direction of the rotating groove, and the hydraulic oil in the rotating groove flows toward the direction of the second space.

[0012] As a preferred technical solution of the present invention, the first one-way valve includes a first sealing ball and a first sealing spring, a first sealing slot hole is coaxially opened at the bottom of the support rod, the inner diameter of the first sealing slot hole decreases in sequence from the hollow groove to the rotating groove in the vertical direction, the first sealing slot hole is communicated with the hollow groove and the rotating groove respectively, the first sealing ball is arranged at the connection between the first sealing slot hole and the rotating groove, the first sealing spring is arranged in the first sealing slot hole, the two ends of the first sealing spring are respectively connected to the first sealing ball and the support rod, and the first sealing ball can lock or release the sealing matching relationship between it and the connection between the first sealing slot hole and the rotating groove;

[0013] The second one-way valve includes a second sealing ball and a second sealing spring. A second sealing slot is coaxially provided at the bottom of the support rod. The inner diameter of the second sealing slot increases gradually in the vertical direction from the oil delivery groove ring to the rotating groove. The second sealing slot is communicated with the oil delivery groove ring and the rotating groove respectively. The second sealing ball is arranged at the connection between the second sealing slot and the rotating groove. The second sealing spring is arranged in the second sealing slot. Both ends of the second sealing spring are respectively connected to the second sealing ball and the support rod. The second sealing ball can lock or release the sealing cooperation relationship between the second sealing slot and the rotating groove.

[0014] As a preferred technical solution of the present invention, the pressing assembly also includes a rotating motor and a driving disk, the driving disk and the rotating disk are meshed and connected with each other, the rotating motor is sealed and arranged on the seabed, and the output end of the rotating motor is coaxially connected to the driving disk.

[0015] As a preferred technical solution of the present invention, it also includes a pressure relief component, the pressure relief component includes a pressure relief ball, a pressure relief pipe and a pressure relief rod, the rotating disk is also provided with a pressure relief slot hole, a sealing slot hole and an annular connecting groove, the pressure relief slot hole and the sliding groove are arranged at two ends of the rotating disk opposite to each other, the central axis of the pressure relief slot hole and the central axis of the sliding groove coincide with each other, the pressure relief ball is slidably arranged in the pressure relief slot hole, the sealing slot hole is respectively communicated with the pressure relief slot hole and the rotating groove, the pressure relief rod is slidably and sealedly arranged in the sealing slot hole, and the pressure relief rod is respectively connected to the pressure relief ball and the pressing rod;

[0016] The annular connecting groove is coaxially opened at the top of the rotating disk, the annular connecting groove is communicated with the pressure relief groove hole, a pressure relief hole is opened on the side wall of the support rod, the pressure relief hole is communicated with the second space, and both ends of the pressure relief pipe are respectively communicated with the pressure relief hole and the annular connecting groove.

[0017] As a preferred technical solution of the present invention, it also includes an oil storage tank and an oil pump, the oil storage tank is arranged on the rotating disk, the pressure relief slot hole includes a first pressure relief slot hole and a second pressure relief slot hole arranged coaxially, the first pressure relief slot hole is interconnected with the input port of the oil storage tank, the second pressure relief slot hole is interconnected with the sealing slot hole, and the annular connecting groove is interconnected with the second pressure relief slot hole; the inner diameter size of the first pressure relief slot hole is smaller than the inner diameter size of the second pressure relief slot hole, and the diameter size of the pressure relief ball is equal to the inner diameter size of the first pressure relief slot hole;

[0018] The oil pump is communicated with the oil storage tank, the output port of the oil storage tank is communicated with the oil delivery groove ring, and the oil pump pumps the hydraulic oil in the oil storage tank into the oil delivery groove ring.

[0019] As a preferred technical solution of the present invention, the pressure relief assembly also includes an annular pressure relief ring, which is slidably and sealingly arranged at the connection between the annular connecting groove and the surface of the rotating disk, and the annular pressure relief ring is provided with a connecting hole, and the pressure relief pipe is sealingly connected to the connecting hole, and the pressure relief pipe is a polyethylene pipe that can withstand water pressure.

[0020] A design method for a cast-in-place box beam support structure comprises the following steps:

[0021] S1: pour and set up the installation platform on the seabed;

[0022] S2: The rotating disk is rotatably disposed on the mounting platform;

[0023] S3: The connecting rod and the pressing rod are connected and installed with each other;

[0024] S4: the connecting rod is sealed and inserted into the sliding groove;

[0025] S5: The pressing plate is installed in the hollow groove;

[0026] S6: The support rod is coaxially and rotatably sealed on the rotating disk;

[0027] S7: filling the pressing space with hydraulic oil, connecting the pressing spring to the pressing rod and the rotating disk respectively, and completing the installation of the single bracket structure.

[0028] The beneficial effects of the present invention are:

[0029] The present invention is provided with a pressing assembly. When the undercurrent on the seabed surges toward the pressing rod, the pressing rod will be subjected to the force of the undercurrent on the seabed to slide in the direction close to the support rod, thereby driving the connecting rod connected thereto to flow in the direction close to the rotating groove, thereby compressing the content volume of the pressing space. Since the pressing space is filled with hydraulic oil that is difficult to compress, the hydraulic oil will exert a force on the pressing plate, causing the pressing plate to move along the axial direction of the hollow groove toward the top direction of the support rod. Since the pressing plate of the present invention is a heavy block, the overall center of gravity of the support rod moves toward the bottom during the lifting of the pressing plate. In addition, the greater the force of the undercurrent on the pressing rod, the greater the sliding distance of the pressing rod, the higher the lifting height of the pressing plate, the lower the overall center of gravity of the support rod, and the stability of the support rod in resisting the impact of the undercurrent on the seabed is further improved. This solves the currently widely used technical strategy of significantly increasing the bottom weight of the bracket to lower the center of gravity of the overall structure, thereby improving its stability in resisting the impact of the undercurrent on the seabed. However, although this design approach is effective, it also introduces significant cost issues: in order to ensure sufficient stability to withstand potential maximum undercurrent impacts, it is often necessary to excessively increase the bottom weight of the support, which inevitably leads to a huge consumption of support construction materials and a sharp increase in costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0031] Figure 1 It is a front view of a cast-in-place box beam support structure of the present invention;

[0032] Figure 2 This is an internal diagram of a support rod of a cast-in-place box beam support structure of the present invention;

[0033] Figure 3 For the present invention Figure 2 A magnified image of point A;

[0034] Figure 4 This is an overall diagram of a rotating disk of a cast-in-place box beam support structure of the present invention;

[0035] Figure 5 This is a cross-sectional view of a rotating disk of a cast-in-place box beam support structure of the present invention.

[0036] Description of main symbols

[0037] In the figure: 1, support rod; 101, hollow groove; 1011, first space; 1012, second space; 102, oil delivery groove ring; 103, first sealing groove hole; 104, second sealing groove hole; 105, pressure relief hole; 2, pressing assembly; 201, pressing plate; 202, pressing rod; 203, connecting rod; 204, pressing spring; 205, rotating plate; 2051, rotating groove; 2052, sliding groove; 2053, square groove; 2054, sealing groove hole; 2055, ring shaped connecting groove; 2056, the first pressure relief groove hole; 2057, the second pressure relief groove hole; 206, the rotating motor; 207, the drive plate; 3, the hydraulic oil; 4, the sealing ring; 5, the first one-way valve; 501, the first sealing ball; 502, the first sealing spring; 6, the second one-way valve; 601, the second sealing ball; 602, the second sealing spring; 7, the pressure relief assembly; 701, the pressure relief ball; 702, the pressure relief pipe; 703, the pressure relief rod; 704, the annular pressure relief ring; 8, the oil storage tank; 9, the oil pump. DETAILED DESCRIPTION

[0038] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0039] See also Figure 1-5The present embodiment provides a cast-in-place box beam support structure, including a support rod 1 coaxially provided with a hollow groove 101, the support rod 1 is vertically arranged on the seabed, and also includes a pressing component 2 and a hydraulic component, the pressing component 2 includes a pressing plate 201, a pressing rod 202, a connecting rod 203, a pressing spring 204 and a rotating plate 205, the hydraulic component includes hydraulic oil 3, the rotating plate 205 coaxially provided with a rotating groove 2051, the rotating plate 205 is rotatably arranged on the seabed, the support rod 1 is coaxially rotatably sealed in the rotating groove 2051, the pressing plate 201 is slidably sealed in the hollow groove 101, and the rotating plate 205 also has a sliding groove 20 52, the central axis direction of the sliding groove 2052 is perpendicular to the central axis direction of the rotating groove 2051, the sliding groove 2052 and the rotating groove 2051 are connected to each other, the connecting rod 203 is slidably and sealedly arranged in the sliding groove 2052, the pressing plate 201 divides the hollow groove 101 into the first space 1011 and the second space 1012 from top to bottom, the connecting rod 203 divides the sliding groove 2052 into the third space and the fourth space, the second space 1012, the third space and the rotating groove 2051 form a pressing space, and the hydraulic oil 3 is filled in the pressing space; the pressing rod 202 is slidably and vertically arranged on the top surface of the rotating plate 205, The bottom of the pressing rod 202 is connected to the top of the connecting rod 203, and the two ends of the pressing spring 204 are connected to the pressing rod 202 and the rotating disk 205 respectively; in this scheme, by providing a pressing assembly 2, when the undercurrent on the seabed surges toward the pressing rod 202, the pressing rod 202 will be affected by the force of the undercurrent on the seabed to slide toward the direction close to the support rod 1, thereby driving the connecting rod 203 connected thereto to flow toward the direction close to the rotating groove 2051, thereby compressing the volume of the pressing space. Since the pressing space is filled with hydraulic oil 3 that is difficult to compress, the hydraulic oil 3 will exert a force on the pressing disk 201, causing the pressing disk 201 to slide along the hollow groove 1 01 moves in the direction of the axis toward the top of the support rod 1. Since the pressing plate 201 of this solution is a heavy block, the overall center of gravity of the support rod 1 moves toward the bottom during the lifting of the pressing plate 201. In addition, the greater the force of the submarine undercurrent on the pressing rod 202, the greater the sliding distance of the pressing rod 202, which makes the pressing plate 201 lift higher, making the overall center of gravity of the support rod 1 lower, and can improve its stability against the impact of submarine undercurrents. This solves the currently widely used technical strategy of significantly increasing the bottom weight of the bracket to reduce the center of gravity of the overall structure, thereby improving its stability against the impact of submarine undercurrents. However, although this design idea is effective, it also introduces significant cost issues: because in order to ensure sufficient stability to resist the potential maximum undercurrent impact, it is often necessary to excessively increase the bottom weight of the bracket, which inevitably leads to a huge consumption of bracket construction materials and a sharp increase in costs.

[0040] Specifically, since the connecting rod 203 of the present invention is arranged inside the rotating disk 205, and the pressing rod 202 is arranged outside the rotating disk 205, in order to solve the problem that the interior of the rotating disk 205 always maintains a sealed fit with the seabed during the sliding process of the pressing rod 202 and the connecting rod 203, the pressing assembly 2 of the present invention further includes a sealing ring 4, and a square groove 2053 is provided on the top surface of the rotating disk 205, one end of the square groove 2053 is connected to the sliding groove 2052, and the central axis of one end of the square groove 2053 is aligned with the central axis of the sliding groove 2052. They are arranged parallel to each other, and the sealing ring 4 can be slidably sealed in the square groove 2053. The sealing ring 4 is provided with a sealing groove, and the sealing groove is sealedly connected to the part of the connecting rod 203 located in the square groove 2053. Through such an arrangement, when the pressing rod 202 and the connecting rod 203 slide together, the sealing ring 4 will be driven to rotate in the square groove 2053, and the sealing ring 4 itself is sealed and matched with the rotating disk 205, so that when the pressing rod 202 and the connecting rod 203 are sliding, the inside of the rotating disk 205 always maintains a sealed and matched relationship with the seabed.

[0041] In order to ensure the stability of the support rod 1 of the present scheme, the height of the single lifting of the pressing plate 201 cannot be too high during the lifting process. Based on this, the inner diameter of the hollow groove 101 in the present scheme is larger than the inner diameter of the sliding groove 2052. This arrangement ensures that the height of the single lifting of the pressing plate 201 in the present scheme can be controlled within a certain range during the lifting process, thereby ensuring the stability of the support rod 1.

[0042] According to the description of the above embodiment, since the height of the pressing plate 201 cannot be lifted too much at a time, and in fact, when the submarine undercurrent is formed, it will apply force to the pressing rod 202 multiple times within a certain period of time, this solution can control the lifting height of the pressing plate 201 according to the force and frequency applied by the submarine undercurrent to the pressing rod 202; based on this, the support rod 1 of this solution is also coaxially provided with an oil delivery groove ring 102, and the hydraulic assembly also includes a first one-way valve 5 and a second one-way valve 6, and the inner diameter of the oil delivery groove ring 102 is larger than the hollow The inner diameter size of the groove 101, the oil delivery groove ring 102 and the hollow groove 101 are respectively connected with the rotating groove 2051, the first one-way valve 5 is sealed and arranged at the connection between the hollow groove 101 and the rotating groove 2051, the second one-way valve 6 is sealed and arranged at the connection between the oil delivery groove ring 102 and the rotating groove 2051, the oil delivery groove ring 102 is filled with hydraulic oil 3, the hydraulic oil 3 in the oil delivery groove ring 102 flows toward the rotating groove 2051, and the hydraulic oil 3 in the rotating groove 2051 flows toward the second space 1012. By providing the oil delivery groove ring 102, due to the presence of the second one-way valve 6, the hydraulic oil 3 in the oil delivery groove ring 102 will continuously add the hydraulic oil 3 into the rotating groove 2051; and due to the presence of the first one-way valve 5, the hydraulic oil 3 in the rotating groove 2051 will continuously flow into the second space 1012, thereby achieving that the pressing plate 201 can continuously lift its height during the sliding of the pressing rod 202.

[0043] Specifically, the first one-way valve 5 of the present embodiment includes a first sealing ball 501 and a first sealing spring 502. A first sealing slot 103 is coaxially provided at the bottom of the support rod 1. The inner diameter of the first sealing slot 103 decreases gradually in the vertical direction from the hollow groove 101 to the rotating groove 2051. The first sealing slot 103 is connected to the hollow groove 101 and the rotating groove 2051 respectively. The first sealing ball 501 is arranged at the connection between the first sealing slot 103 and the rotating groove 2051. The first sealing spring 502 is arranged in the first sealing slot 103. The two ends of the first sealing spring 502 are respectively connected to the first sealing ball 501 and the support rod 1. The first sealing ball 501 can lock or release the sealing matching relationship between it and the first sealing slot 103 and the rotating groove 2051. ; In addition, the second one-way valve 6 includes a second sealing ball 601 and a second sealing spring 602. A second sealing slot 104 is coaxially opened at the bottom of the support rod 1. The inner diameter of the second sealing slot 104 increases gradually in the vertical direction from the oil delivery groove ring 102 to the rotating groove 2051. The second sealing slot 104 is respectively connected to the oil delivery groove ring 102 and the rotating groove 2051. The second sealing ball 601 is arranged at the connection between the second sealing slot 104 and the rotating groove 2051. The second sealing spring 602 is arranged in the second sealing slot 104. The two ends of the second sealing spring 602 are respectively connected to the second sealing ball 601 and the support rod 1. The second sealing ball 601 can lock or release the sealing cooperation relationship between it and the second sealing slot 104 and the rotating groove 2051.

[0044] It should be explained here that the working process of this scheme is: when a single undersea undercurrent applies a force to the pressing rod 202, the pressing rod 202 will slide along the setting direction of the sliding groove 2052, thereby driving the connecting rod 203 connected thereto to slide, causing the volume of the pressing space to decrease; during this period, the hydraulic oil 3 will apply a force to the first sealing ball 501, causing the first sealing ball 501 to move toward the top, thereby causing the first sealing ball 501 to release its connection with the first sealing slot hole 103 and the rotating slot 2051. The hydraulic oil 3 in the pressing space will flow into the second space 1012, driving the pressing plate 201 to lift. In addition, the hydraulic oil 3 in the rotating groove 2051 will also exert a force on the second sealing ball 601, causing the second sealing ball 601 to move toward the top. Due to the structure of the second sealing slot hole 104, the second sealing ball 601 will lock the sealing relationship between the connection between the second sealing slot hole 104 and the rotating groove 2051, and the hydraulic oil 3 in the oil delivery groove ring 102 cannot flow into to the rotating groove 2051; after the force exerted by the single submarine undercurrent on the pressing rod 202 disappears, the pressing rod 202 is driven to reset due to the force of the pressing spring 204. At this time, the volume of the pressing space increases, and the hydraulic oil 3 in the rotating groove 2051 no longer exerts a force on the first sealing ball 501 and the second sealing ball 601. At the same time, the hydraulic oil 3 in the second space 1012 exerts a force on the first sealing ball 501 to move toward the bottom, and the first sealing ball 501 re-locks its contact with the first sealing slot hole 10 The sealing cooperation relationship at the connection between 3 and the rotating groove 2051 makes the pressing plate 201 locked at the current height; and the hydraulic oil 3 located in the oil delivery groove ring 102 exerts a force on the second sealing ball 601 to move toward the bottom, so that the second sealing ball 601 releases the sealing cooperation relationship at the connection between the second sealing groove hole 104 and the rotating groove 2051, and the hydraulic oil 3 located in the oil delivery groove ring 102 will be replenished into the rotating groove 2051, and when the pressing rod 202 slides next time, the height of the pressing plate 201 can continue to be raised.

[0045] Specifically, since the submarine undercurrents of the present solution may be located at any angle, but at the same time, the submarine undercurrents will only flow toward a specific angle, in order to ensure that the submarine undercurrents at various angles can exert a force on the pressing rod 202, the pressing assembly 2 of the present solution also includes a rotating motor 206 and a driving disk 207, and the driving disk 207 is meshed and connected with the rotating disk 205. The rotating motor 206 is sealed and arranged on the seabed, and the output end of the rotating motor 206 is coaxially connected with the driving disk 207 to drive the rotating disk 205 to rotate and adjust the position of the pressing rod 202.

[0046] The above embodiment describes the situation when an undercurrent appears on the seabed. The height of the pressing plate 201 will continue to increase with the sliding distance of the pressing rod 202 and the increase in the number of sliding times. After the undercurrent ends, the height of the pressing plate 201 needs to be gradually lowered until it returns to its original position. Based on this, the present scheme also includes a pressure relief component 7, which includes a pressure relief ball 701, a pressure relief pipe 702 and a pressure relief rod 703. The rotating disk 205 is also provided with a pressure relief slot hole, a sealing slot hole 2054 and an annular connecting slot 2055. The pressure relief slot hole and the sliding slot 2052 are arranged at both ends of the rotating disk 205 relative to each other, and the central axis of the pressure relief slot hole is aligned with the central axis of the sliding slot 2052. The lines overlap with each other, the pressure relief ball 701 is slidably arranged in the pressure relief slot hole, the sealing slot hole 2054 is respectively connected with the pressure relief slot hole and the rotating slot 2051, the pressure relief rod 703 is slidably sealed in the sealing slot hole 2054, and the pressure relief rod 703 is respectively connected with the pressure relief ball 701 and the pressing rod 202; in addition, the annular connecting groove 2055 is coaxially opened on the top of the rotating disk 205, the annular connecting groove 2055 is connected with the pressure relief slot hole, the side wall of the support rod 1 is provided with a pressure relief hole 105, the pressure relief hole 105 is connected with the second space 1012, and the two ends of the pressure relief pipe 702 are respectively connected with the pressure relief hole 105 and the annular connecting groove 2055. It should be noted that since the inner diameter of the sealing slot hole 2054 of this scheme is consistent with the outer diameter of the pressure relief rod 703, the hydraulic oil in the rotating slot 2051 cannot flow into the second pressure relief slot hole 2057 through the sealing slot hole 2054.

[0047] It is worth mentioning that the working process of this scheme is as follows: since the pressure relief ball 701 can lock or release its sealing cooperation relationship with the pressure relief slot hole, when the pressing rod 202 is in the initial position, the pressure relief ball 701 releases its sealing cooperation relationship with the pressure relief slot hole, and the hydraulic oil 3 located in the hollow groove 101 will flow into the annular connecting groove 2055 through the pressure relief pipe 702, and then flow out of the device through the pressure relief slot hole, thereby reducing the content of hydraulic oil 3 in the second space 1012, and the height of the pressing plate 201 will gradually decrease. It should be noted that when the pressing rod 202 is in the initial position, it corresponds to that the impact force of the submarine undercurrent on the pressing rod 202 does not reach above the predetermined force, or the frequency of the impact force of the submarine undercurrent on the pressing rod 202 is too low. When the pressing rod 202 starts to slide, the pressure relief ball 701 will lock its sealing cooperation relationship with the pressure relief slot hole, and the hydraulic oil 3 located in the hollow slot 101 cannot flow out of the device through the pressure relief slot hole, thereby increasing the content of hydraulic oil 3 in the second space 1012, and the height of the pressing plate 201 will gradually increase. It should be noted that when the pressing rod 202 starts to slide, the corresponding impact force of the seabed undercurrent on the pressing rod 202 reaches above the predetermined force, and the frequency of the impact force of the seabed undercurrent on the pressing rod 202 reaches a certain level.

[0048] Specifically, the present scheme specifically describes the structure of the pressure relief slot hole, and the present scheme also includes an oil storage tank 8 and an oil pump 9. The oil storage tank 8 is arranged on the rotating disk 205, and the pressure relief slot hole includes a first pressure relief slot hole 2056 and a second pressure relief slot hole 2057 which are coaxially arranged. The first pressure relief slot hole 2056 is interconnected with the input port of the oil storage tank 8, the second pressure relief slot hole 2057 is interconnected with the sealing slot hole 2054, and the annular connecting groove 2055 is interconnected with the second pressure relief slot hole 2057; the inner diameter size of the first pressure relief slot hole 2056 is smaller than the inner diameter size of the second pressure relief slot hole 2057, and the diameter size of the pressure relief ball 701 is equal to the inner diameter size of the first pressure relief slot hole 2056; the oil pump 9 is interconnected with the oil storage tank 8, and the output port of the oil storage tank 8 is interconnected with the oil delivery groove ring 102, and the oil pump 9 stores the oil. The hydraulic oil 3 in the oil tank 8 is pumped into the oil delivery groove ring 102; when the pressing rod 202 is in the initial position, the pressure relief ball 701 is located in the connection between the second pressure relief groove hole 2057 and the first pressure relief groove hole 2056, so that the first pressure relief groove hole 2056 and the second pressure relief groove hole 2057 are connected to each other, and the hydraulic oil 3 in the second space 1012 flows into the oil storage tank 8 through the annular connecting groove 2055, the second pressure relief groove hole 2057 and the first pressure relief groove hole 2056; when the pressing rod 202 starts to slide, the pressure relief ball 701 is located in the first pressure relief groove hole 2056, so that the first pressure relief groove hole 2056 and the second pressure relief groove hole 2057 are sealed and matched with each other, and the hydraulic oil 3 in the second space 1012 cannot flow into the oil storage tank 8 through the first pressure relief groove hole 2056. The hydraulic oil 3 in the oil storage tank 8 will be pumped back into the oil delivery groove ring 102 due to the action of the oil pump 9. It is worth noting that the oil storage tank 8 and the oil delivery groove ring 102 of the present scheme are connected through a hose that can withstand water pressure, and the rotation angle of the rotating disk 205 will rotate to the left at most 180°, or to the right at most 180° compared to the initial position. It should be noted that the initial position of the rotating disk 205 mentioned here refers to the oil storage tank 8 and the connecting port between the oil storage tank 8 and the oil delivery groove ring 102 are in the same vertical plane, and the initial position of the pressing rod 202 refers to the position of the pressing rod 202 when the force of the pressing spring 204 on the pressing rod 202 is equal to 0 under ideal conditions.

[0049] In addition, it is worth mentioning that the pressure relief assembly 7 of the present scheme also includes an annular pressure relief ring 704, which is slidably and sealingly arranged at the connection between the annular connecting groove 2055 and the surface of the rotating disk 205. The annular pressure relief ring 704 is provided with a connecting hole, and the pressure relief pipe 702 is sealed and connected to the connecting hole. The pressure relief pipe 702 is a polyethylene pipe that can withstand water pressure. By providing the annular pressure relief ring 704, the pressure relief pipe 702 connected between the rotating disk 205 and the support rod 1 can still remain stationary relative to the support rod 1 during the rotation of the rotating disk 205 relative to the support rod 1, and the hydraulic oil 3 located in the annular connecting groove 2055 does not leak to the seabed during the rotation of the rotating disk 205.

[0050] A design method for a cast-in-place box beam support structure comprises the following steps:

[0051] S1: pour and set up the installation platform on the seabed;

[0052] S2: The rotating disk 205 is rotatably disposed on the mounting platform;

[0053] S3: The connecting rod 203 and the pressing rod 202 are connected and installed with each other;

[0054] S4: The connecting rod 203 is sealed and inserted into the sliding groove 2052;

[0055] S5: The pressing plate 201 is installed in the hollow groove 101;

[0056] S6: The support rod 1 is coaxially rotatably and sealedly disposed on the rotating disk 205;

[0057] S7: Fill the pressing space with hydraulic oil 3, connect the pressing spring 204 to the pressing rod 202 and the rotating disk 205 respectively, and complete the installation of the single bracket structure.

[0058] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A cast-in-place box beam support structure, comprising a support rod with a coaxial hollow groove, wherein the support rod is vertically arranged on the seabed, characterized in that: It also includes a pressing component and a hydraulic component, the pressing component includes a pressing plate, a pressing rod, a connecting rod, a pressing spring and a rotating plate, the hydraulic component includes hydraulic oil, the rotating plate is coaxially provided with a rotating groove, the rotating plate is rotatably arranged on the seabed, the support rod is coaxially rotatably and sealedly arranged in the rotating groove, the pressing plate is slidably and sealedly arranged in the hollow groove, the rotating plate is also provided with a sliding groove, the central axis direction of the sliding groove is perpendicular to the central axis direction of the rotating groove, and the sliding groove and the rotating groove are arranged perpendicular to each other. They are interconnected, the connecting rod is slidably and sealedly arranged in the sliding groove, the pressing plate divides the hollow groove into a first space and a second space from top to bottom, the connecting rod divides the sliding groove into a third space and a fourth space, the second space, the third space and the rotating groove form a pressing space, and the hydraulic oil is filled in the pressing space; the pressing rod is slidably and vertically arranged on the top surface of the rotating disk, the bottom of the pressing rod is connected to the top of the connecting rod, and the pressing spring is respectively connected to the pressing rod and the rotating disk.

2. A cast-in-place box beam support structure according to claim 1, characterized in that: The pressing assembly also includes a sealing ring, a square groove is provided on the top surface of the rotating disk, one end of the square groove is communicated with the sliding groove, and the central axis of one end of the square groove is arranged parallel to the central axis of the sliding groove, the sealing ring can be slidably sealed in the square groove, the sealing ring has a sealing groove, and the sealing groove is sealedly connected to the part of the connecting rod located in the square groove.

3. The cast-in-place box beam support structure according to claim 1, characterized in that: The inner diameter of the hollow groove is larger than the inner diameter of the sliding groove.

4. The cast-in-place box beam support structure according to claim 1, characterized in that: The support rod is also coaxially provided with an oil delivery groove ring, and the hydraulic assembly further includes a first one-way valve and a second one-way valve, the inner diameter of the oil delivery groove ring is larger than the inner diameter of the hollow groove, the oil delivery groove ring and the hollow groove are respectively connected with the rotating groove, the first one-way valve seal is arranged at the connection between the hollow groove and the rotating groove, the second one-way valve seal is arranged at the connection between the oil delivery groove ring and the rotating groove, the oil delivery groove ring is filled with hydraulic oil, the hydraulic oil in the oil delivery groove ring flows toward the direction of the rotating groove, and the hydraulic oil in the rotating groove flows toward the direction of the second space.

5. The cast-in-place box beam support structure according to claim 4, characterized in that: The first one-way valve comprises a first sealing ball and a first sealing spring. A first sealing slot hole is coaxially formed at the bottom of the support rod. The inner diameter of the first sealing slot hole decreases in a vertical direction from the hollow groove to the rotating groove. The first sealing slot hole is communicated with the hollow groove and the rotating groove respectively. The first sealing ball is arranged at the connection between the first sealing slot hole and the rotating groove. The first sealing spring is arranged in the first sealing slot hole. Both ends of the first sealing spring are connected to the first sealing ball and the support rod respectively. The first sealing ball can lock or release the sealing cooperation relationship between the first sealing slot hole and the rotating groove. The second one-way valve includes a second sealing ball and a second sealing spring. A second sealing slot is coaxially provided at the bottom of the support rod. The inner diameter of the second sealing slot increases gradually in the vertical direction from the oil delivery groove ring to the rotating groove. The second sealing slot is communicated with the oil delivery groove ring and the rotating groove respectively. The second sealing ball is arranged at the connection between the second sealing slot and the rotating groove. The second sealing spring is arranged in the second sealing slot. Both ends of the second sealing spring are respectively connected to the second sealing ball and the support rod. The second sealing ball can lock or release the sealing cooperation relationship between the second sealing slot and the rotating groove.

6. The cast-in-place box beam support structure according to claim 1, characterized in that: The pressing assembly also includes a rotating motor and a driving disk. The driving disk is meshed with the rotating disk. The rotating motor is sealed and arranged on the seabed. The output end of the rotating motor is coaxially connected to the driving disk.

7. The cast-in-place box beam support structure according to claim 4, characterized in that: It also includes a pressure relief assembly, which includes a pressure relief ball, a pressure relief pipe and a pressure relief rod. The rotating disk is also provided with a pressure relief slot hole, a sealing slot hole and an annular connecting groove. The pressure relief slot hole and the sliding groove are arranged at two ends of the rotating disk opposite to each other. The central axis of the pressure relief slot hole and the central axis of the sliding groove coincide with each other. The pressure relief ball is slidably arranged in the pressure relief slot hole. The sealing slot hole is respectively communicated with the pressure relief slot hole and the rotating groove. The pressure relief rod is slidably and sealingly arranged in the sealing slot hole. The pressure relief rod is respectively connected to the pressure relief ball and the pressing rod; The annular connecting groove is coaxially opened at the top of the rotating disk, the annular connecting groove is communicated with the pressure relief groove hole, a pressure relief hole is opened on the side wall of the support rod, the pressure relief hole is communicated with the second space, and both ends of the pressure relief pipe are respectively communicated with the pressure relief hole and the annular connecting groove.

8. The cast-in-place box beam support structure according to claim 7, characterized in that: It also includes an oil storage tank and an oil pump, the oil storage tank is arranged on the rotating disk, the pressure relief slot hole includes a first pressure relief slot hole and a second pressure relief slot hole arranged coaxially, the first pressure relief slot hole is interconnected with the input port of the oil storage tank, the second pressure relief slot hole is interconnected with the sealing slot hole, and the annular connecting groove is interconnected with the second pressure relief slot hole; the inner diameter of the first pressure relief slot hole is smaller than the inner diameter of the second pressure relief slot hole, and the diameter of the pressure relief ball is equal to the inner diameter of the first pressure relief slot hole; The oil pump is communicated with the oil storage tank, the output port of the oil storage tank is communicated with the oil delivery groove ring, and the oil pump pumps the hydraulic oil in the oil storage tank into the oil delivery groove ring.

9. The cast-in-place box beam support structure according to claim 7, characterized in that: The pressure relief assembly also includes an annular pressure relief ring, which is slidably and sealingly arranged at the connection between the annular connecting groove and the surface of the rotating disk. The annular pressure relief ring is provided with a connecting hole, and the pressure relief pipe is sealingly connected to the connecting hole. The pressure relief pipe is a polyethylene pipe that can withstand water pressure.

10. A design method for a cast-in-place box girder support structure, applicable to the cast-in-place box girder support structure according to claims 2-9, characterized in that: The following steps are involved: S1: pour and set up the installation platform on the seabed; S2: The rotating disk is rotatably disposed on the mounting platform; S3: The connecting rod and the pressing rod are connected and installed with each other; S4: the connecting rod is sealed and inserted into the sliding groove; S5: The pressing plate is installed in the hollow groove; S6: The support rod is coaxially and rotatably sealed on the rotating disk; S7: filling the pressing space with hydraulic oil, connecting the pressing spring to the pressing rod and the rotating disk respectively, and completing the installation of the single bracket structure.

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