Assembly type hollow berthing pier main body structure and construction method

Abstract

The invention relates to the field of assembly type berthing piers, in particular to an assembly type hollow berthing pier main body structure and a construction method, and the assembly type hollow berthing pier main body structure comprises a cast-in-place base and a hollow pier joint; sequentially assembling the A-type pier joint, the B-type pier joint, the C-type pier joint, the D-type pier joint and the E-type pier joint from the upper part of the cast-in-place base, and pouring and fixing; boat tying hooks are arranged on the C-shaped pier joint, the D-shaped pier joint and the E-shaped pier joint. The fabricated hollow pier joint is adopted to replace a traditional formwork for installation, except the top joint and the bottom joint, an upper opening and a lower opening both adopt a structural form similar to a pipeline socket, and the positioning protrusions, the positioning grooves, the connecting protrusions and the connecting grooves are arranged, so that accurate positioning during pier joint installation is facilitated. Tedious procedures such as repeated mounting and dismounting of the formwork are avoided, the safety risk is obviously reduced, and the construction efficiency is obviously improved.

Description

Technical Field

[0001] The present invention relates to the field of assembled mooring piers, and in particular to an assembled hollow mooring pier main structure and a construction method. Background Art

[0002] Mooring piers are piers for ships to temporarily dock before entering the lock. When a ship passes through the lock, the flushing water of the lock causes a large change in water flow conditions. Usually, for the navigation safety of ships, when the front ship passes through the lock, other ships should stop at the anchorage and wait. In order to improve the lock passing capacity, mooring piers are arranged between the anchorage and the lock for ships to temporarily dock before entering the lock.

[0003] For example, the Chinese utility model patent with application publication number CN215715050U discloses a pile-pier type bidirectional mooring pier structure, which includes a pedestal, a pile foundation and a pier body. The pile foundation is fixedly connected to the bottom of the pedestal, and the pier body is fixedly connected to the top of the pedestal. Waterproof plate grooves are provided on both sides of the pier body. A plurality of fixed mooring posts are fixedly connected to the water-facing surface of the pier body. A fixed mooring post embedded part is provided on the side of the pier body away from the fixed mooring posts, which can solve the berthing problem of ships in the planned lock by utilizing the characteristics of the structure itself.

[0004] The main structure of the mooring pier generally adopts a layered cast-in-place construction method, which requires steel bar binding, formwork installation and concrete pouring from bottom to top. However, the existing mooring piers require multiple steel bar binding and formwork installation and removal, which is cumbersome, has low construction efficiency and a long construction period, which seriously affects the construction cost.

[0005] Therefore, there is an urgent need for an assembled hollow mooring pier main structure and construction method to solve the existing construction difficulties. Summary of the Invention

[0006] In order to avoid the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a prefabricated hollow mooring pier main structure and construction method, avoiding the tedious processes such as multiple installation and removal of formwork and steel bar binding, greatly improving construction efficiency, and at the same time improving the appearance quality of the pier body.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: an assembled hollow mooring pier main structure, comprising a cast-in-place base and a hollow pier segment; a steel cage is provided inside the hollow pier segment, and the hollow pier segment includes an A-type pier segment, a B-type pier segment, a C-type pier segment, a D-type pier segment, and an E-type pier segment;

[0008] Assembling the A-type pier section, B-type pier section, C-type pier section, D-type pier section and E-type pier section in sequence from the upper part of the cast-in-place base, and casting and fixing them;

[0009] The C-type pier section, the D-type pier section and the E-type pier section are provided with mooring hooks.

[0010] The present invention is further configured such that the bottom of the cast-in-place base is supported by a plurality of pile foundations, a mounting groove is provided on the top of the cast-in-place base, connecting steel bars are evenly distributed in a circumferential direction inside the cast-in-place base, and the connecting steel bars extend out of the concrete surface at the bottom of the mounting groove;

[0011] A plurality of first supporting blocks are evenly distributed on the outer side of the connecting steel bar along the circumferential direction, and the first supporting blocks are provided with positioning grooves.

[0012] The present invention is further configured such that the inner diameter of the installation groove is greater than the outer diameter of the hollow pier segment.

[0013] The present invention is further configured such that the connecting steel bars are threaded steel bars, and the length extending from the concrete surface is greater than or equal to 20 cm.

[0014] The present invention is further configured such that the inner diameter of the hollow pier segment is greater than or equal to 1.6 m, and the wall thickness is 25 cm to 30 cm.

[0015] The present invention is further configured such that the A-type pier section is used to connect the cast-in-place base and its upper pier section, a plurality of second support blocks are provided at the bottom of the A-type pier section, and positioning protrusions are provided on the second support blocks; the positions and number of the second support blocks match the positions and number of the first support blocks; the positioning protrusions are inserted into the positioning grooves; and a first connecting groove is provided at the top of the A-type pier section;

[0016] The bottom of the B-type pier section is provided with a first connecting protrusion, and the top is provided with a second connecting groove; the first connecting protrusion is connected to the first connecting groove;

[0017] The bottom of the C-shaped pier section is provided with a second connecting protrusion, and the top is provided with a third connecting groove, and the second connecting protrusion is connected to the second connecting groove;

[0018] The bottom of the D-shaped pier section is provided with a third connecting protrusion, and the top is provided with a fourth connecting groove, and the third connecting protrusion is connected to the third connecting groove;

[0019] The bottom of the E-shaped pier section is provided with a fourth connecting protrusion, and the top is a flat opening, and the fourth connecting protrusion is connected to the fourth connecting groove.

[0020] The present invention is further configured such that the upper side wall of the C-shaped pier section is provided with a first inner groove, and the third connecting groove is provided along the first inner groove;

[0021] The side wall of the D-shaped pier section is provided with a second inner groove, and the third connecting protrusion and the fourth connecting groove are provided along the second inner groove;

[0022] A third inner groove is provided on the lower side wall of the E-shaped pier segment, and the fourth connecting protrusion is provided along the third inner groove;

[0023] The positions and shapes of the first inner groove, the second inner groove and the third inner groove match each other; mooring hooks are arranged in the first inner groove, the second inner groove and the third inner groove.

[0024] The present invention is further configured such that the B-type pier sections and the D-type pier sections are standard sections, and the number thereof can be increased or decreased as required.

[0025] A method for constructing a main structure of an assembled hollow mooring pier comprises the following steps:

[0026] S1: Prepare for construction and pour the cast-in-place base on the pile foundation;

[0027] S2: Connect the A-type pier section to the cast-in-place base and then pour concrete;

[0028] S3: Connect the remaining hollow pier sections in sequence and pour them layer by layer;

[0029] S4: In step S3, before each pour, a total station is used to measure and calculate the verticality. If the verticality deviation is less than a preset threshold, the deviation is corrected by adjusting the asymmetric thickness of the subsequent pour;

[0030] If the verticality is greater than the preset deviation, hydraulic push rods are installed along the circumference of the hollow pier segment to adjust the pier center position by radial pushing until the verticality meets the requirements;

[0031] S5: Construction is completed.

[0032] The present invention is further configured such that step S2 specifically comprises hoisting the A-type pier section to a corresponding position of the cast-in-place base for installation, so that the first support block is connected to the second support block;

[0033] The connecting steel bars of the cast-in-place base are in a straight line with the axis of the steel cage at the lower end of the A-type pier section. The steel bars at the corresponding positions are connected by welding with auxiliary bars and then concrete is poured. First, the concrete is poured in the installation groove and the A-type pier section to the surface of the cast-in-place base. After solidification, the concrete is continued to be poured inside the A-type pier section to the middle position of the A-type pier section.

[0034] The present invention is further configured such that the deviation correction by adjusting the asymmetric thickness of subsequent pouring in step S4 is specifically achieved by increasing the pouring thickness on the opposite side of the deviation by utilizing the annular pressure difference generated by the deadweight of the concrete, and gradually correcting the deviation by adjusting the thickness of the symmetrical sector-shaped area;

[0035] Use a total station to determine the direction of vertical deviation, set up a sector-shaped area template in the opposite direction of the deviation, pour to the preset height, and continue pouring in the sector-shaped area template according to the increasing thickness;

[0036] The increased thickness is calculated by the following formula:

[0037]

[0038] Where H is the total height, the verticality deviation is △i, θ is the central angle range for increasing the pouring thickness, and R is the inner hole radius of the hollow pier section.

[0039] In summary, the beneficial effects of the above technical solution of the present invention are as follows:

[0040] 1. This invention uses prefabricated hollow pier segments instead of traditional formwork installation. The pier segments are reinforced concrete structures. Except for the top and bottom segments, the upper and lower openings all adopt a structure similar to the pipe socket. Positioning protrusions, positioning grooves, connecting protrusions, and connecting grooves are provided to facilitate accurate positioning during pier segment installation. This avoids the tedious process of multiple installation and removal of formwork, significantly reduces safety risks, and significantly improves construction efficiency. The surface of the pier is smooth and flat without honeycombing, and the appearance quality is greatly improved compared to conventional construction methods.

[0041] 2. The hollow pier sections are connected by bar welding, and the integrity of the mooring pier is improved by post-poured concrete.

[0042] 3. During construction, each layer of hollow pier section is cast in layers, and a correction scheme is set up in stages. If the deviation is small, the circumferential pressure difference generated by the deadweight of the concrete is used to increase the casting thickness on the opposite side of the deviation, and the deviation is gradually corrected by adjusting the thickness of the symmetrical fan-shaped area. If the deviation is large, a hydraulic push rod is set along the circumference of the hollow pier section to correct the deviation; ensure the verticality of the assembled hollow pier. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 This is a schematic diagram of the main structure of the assembled hollow mooring pier;

[0045] Figure 2 This is a schematic diagram of the cast-in-place base structure;

[0046] Figure 3 This is a schematic diagram of the A-type pier section structure;

[0047] Figure 4 This is a schematic diagram of the bottom structure of the A-type pier section;

[0048] Figure 5 This is a schematic diagram of the B-type pier segment structure;

[0049] Figure 6 This is a schematic diagram of the bottom structure of the B-type pier section;

[0050] Figure 7 This is a schematic diagram of the C-type pier section structure;

[0051] Figure 8 This is a schematic diagram of the bottom structure of the C-type pier section;

[0052] Figure 9 This is a schematic diagram of the D-type pier section structure;

[0053] Figure 10 This is a schematic diagram of the bottom structure of the D-type pier section;

[0054] Figure 11 This is a schematic diagram of the E-type pier section structure;

[0055] Figure 12 This is a schematic diagram of the bottom structure of the E-type pier section;

[0056] Figure 13 Schematic diagram of the internal reinforcement cage of the hollow pier segment;

[0057] Figure 14 This is the cross-sectional view of the connection between the A-type pier section and the cast-in-place base;

[0058] Figure 15 This is a schematic diagram of the pouring process of the A-type pier section and cast-in-place base;

[0059] Figure 16 Schematic diagram of concrete pouring layers.

[0060] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0061] 1. Cast-in-place base, 11. Pile foundation, 12. Connecting steel bars, 13. First supporting block, 14. Positioning groove;

[0062] 2. A-type pier section, 21. second supporting block, 22. positioning protrusion, 23. first connecting groove;

[0063] 3. B-type pier section, 31. first connecting protrusion, 32. second connecting groove;

[0064] 4. C-shaped pier section, 41. second connecting protrusion, 42. third connecting groove, 43. first inner groove;

[0065] 5. D-shaped pier section, 51. third connecting protrusion, 52. fourth connecting groove, 53. second inner groove;

[0066] 6. E-shaped pier section, 61. fourth connecting protrusion, 62. third inner groove;

[0067] 7. Boat hook. DETAILED DESCRIPTION

[0068] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments of the present invention, other similar embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of protection of the present invention.

[0069] In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0070] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0071] Example:

[0072] like Figures 1-12 As shown in FIG, a preferred embodiment of the present invention is a prefabricated hollow mooring pier main structure, comprising a cast-in-place base 1 and a hollow pier section; a steel cage is provided inside the hollow pier section, such as Figure 13 As shown; the hollow pier segment includes an A-type pier segment 2, a B-type pier segment 3, a C-type pier segment 4, a D-type pier segment 5 and an E-type pier segment 6;

[0073] Assemble the A-type pier section 2, B-type pier section 3, C-type pier section 4, D-type pier section 5 and E-type pier section 6 in sequence from the upper part of the cast-in-place base 1, and cast and fix them;

[0074] The C-type pier section 4, the D-type pier section 5 and the E-type pier section 6 are provided with mooring hooks. The B-type pier section 3 and the D-type pier section 5 are standard sections, and the number can be increased or decreased according to demand.

[0075] like Figure 2 As shown, the bottom of the cast-in-place base 1 is supported by several pile foundations 11, and a mounting groove is provided on the top of the cast-in-place base 1. Connecting steel bars 12 are evenly distributed in a circumferential direction inside the cast-in-place base 1, and the connecting steel bars 12 extend out of the concrete surface at the bottom of the mounting groove; the connecting steel bars 12 are threaded steel bars, and the length extending out of the concrete surface is greater than or equal to 20 cm.

[0076] A plurality of first support blocks 13 are evenly distributed along the circumferential direction on the outer side of the connecting steel bar 12 , and a positioning groove 14 is provided on the first support block 13 .

[0077] The inner diameter of the installation groove is larger than the outer diameter of the hollow pier section. The inner diameter of the hollow pier section is larger than or equal to 1.6m, and the wall thickness is 25cm-30cm.

[0078] Combine Figure 3-Figure 4As shown, the A-type pier section 2 is used to connect the cast-in-place base 1 and its upper pier section. A plurality of second support blocks 21 are provided at the bottom of the A-type pier section 2, and positioning protrusions 22 are provided on the second support blocks 21; the position and number of the second support blocks 21 match the position and number of the first support blocks 13; the positioning protrusions 22 are inserted into the positioning grooves 14; and a first connecting groove 23 is provided at the top of the A-type pier section 2.

[0079] Combine Figure 5-Figure 6 As shown, the bottom of the B-type pier section 3 is provided with a first connecting protrusion 31 , and the top is provided with a second connecting groove 32 ; the first connecting protrusion 31 is connected to the first connecting groove 23 .

[0080] Combine Figure 7-Figure 8 As shown, the bottom of the C-shaped pier section 4 is provided with a second connecting protrusion 41, and the top is provided with a third connecting groove 42, and the second connecting protrusion 41 is connected to the second connecting groove 32; the upper side wall of the C-shaped pier section 4 is provided with a first inner groove 43, and the third connecting groove 42 is provided along the first inner groove 43.

[0081] Combine Figure 9-10 As shown, the D-shaped pier section 5 is provided with a third connecting protrusion 51 at the bottom and a fourth connecting groove 52 at the top, and the third connecting protrusion 51 is connected to the third connecting groove 42; the side wall of the D-shaped pier section 5 is provided with a second inner groove 53, and the third connecting protrusion 51 and the fourth connecting groove 52 are arranged along the second inner groove 53.

[0082] Combine Figure 11-12 As shown, the bottom of the E-shaped pier segment 6 is provided with a fourth connecting protrusion 61, and the top is flat, and the fourth connecting protrusion 61 is connected to the fourth connecting groove 52; the lower side wall of the E-shaped pier segment 6 is provided with a third inner groove 62, and the fourth connecting protrusion 61 is provided along the third inner groove 62.

[0083] The positions and shapes of the first inner groove 43 , the second inner groove 53 and the third inner groove 62 match each other; mooring hooks 7 are provided in the first inner groove 43 , the second inner groove 53 and the third inner groove 62 .

[0084] Example 2:

[0085] A method for constructing a prefabricated hollow mooring pier main structure, for constructing the prefabricated hollow mooring pier main structure described in an embodiment, comprises the following steps:

[0086] S1: Prepare for construction and pour the cast-in-place base 1 on the pile foundation 11.

[0087] S2: Connect the A-type pier section 2 to the cast-in-place base 1 and then pour concrete to the middle of the A-type pier section 2;

[0088] Specifically, hoist the A-type pier section 2 to the corresponding position of the cast-in-place base 1 for installation, so that the first support block 13 is connected to the second support block 21;

[0089] The connecting steel bars 12 of the cast-in-place base 1 are in a straight line with the axis of the steel cage at the lower end of the A-type pier section 2. The steel bars at the corresponding positions are connected by welding and then concrete is poured. Figure 14 shown.

[0090] First, pour the concrete into the installation groove and the A-type pier section 2 to the surface of the cast-in-place base 1. After solidification, continue pouring the concrete into the A-type pier section 2 to the middle of the A-type pier section 2 to fix the connection. The process is as follows: Figure 15 shown.

[0091] S3: Connect the remaining hollow pier sections in sequence and pour them layer by layer;

[0092] like Figure 16 As shown, the A-type pier section 2 is connected with the B-type pier section 3 and then poured to the middle position of the B-type pier section 3. After solidification, the B-type pier section 3 is connected with the C-type pier section 4 and then poured to the middle position of the C-type pier section 4; after solidification, the C-type pier section 4 is connected with the D-type pier section 5 and then poured to the middle position of the D-type pier section 5; after solidification, the D-type pier section 5 is connected with the E-type pier section 6 and then poured to the top of the E-type pier section 6.

[0093] S4: In step S3, before each pour, a total station is used to measure and calculate the verticality. If the verticality deviation is less than a preset threshold, the deviation is corrected by adjusting the asymmetric thickness of the subsequent pour;

[0094] Utilize the annular pressure difference generated by the concrete's own weight to increase the pouring thickness on the opposite side of the deviation, and gradually correct the deviation by adjusting the thickness in the symmetrical fan-shaped area.

[0095] Use a total station to determine the direction of vertical deviation, set up a sector-shaped area template in the opposite direction of the deviation, pour to the preset height, and continue pouring in the sector-shaped area template according to the increasing thickness;

[0096] The increased thickness is calculated by the following formula:

[0097]

[0098] Where H is the total height, the verticality deviation is △i, θ is the central angle range for increasing the pouring thickness, and R is the inner hole radius of the hollow pier section.

[0099] If the verticality is greater than the preset deviation, hydraulic push rods are installed along the circumference of the hollow pier segment to adjust the pier center position by radial pushing until the verticality meets the requirements;

[0100] S5: Construction is completed.

[0101] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An assembled hollow mooring pier main structure, characterized in that: It includes a cast-in-place base and a hollow pier section; a steel cage is provided inside the hollow pier section, and the hollow pier section includes an A-type pier section, a B-type pier section, a C-type pier section, a D-type pier section and an E-type pier section; Assembling the A-type pier section, B-type pier section, C-type pier section, D-type pier section and E-type pier section in sequence from the upper part of the cast-in-place base, and casting and fixing them; The C-type pier section, the D-type pier section and the E-type pier section are provided with mooring hooks.

2. The assembled hollow mooring pier main structure according to claim 1 is characterized in that: The bottom of the cast-in-place base is supported by a plurality of pile foundations, and a mounting groove is provided on the top of the cast-in-place base. Connecting steel bars are evenly distributed in the circumferential direction inside the cast-in-place base, and the connecting steel bars extend out of the concrete surface at the bottom of the mounting groove; A plurality of first supporting blocks are evenly distributed on the outer side of the connecting steel bar along the circumferential direction, and the first supporting blocks are provided with positioning grooves.

3. The assembled hollow mooring pier main structure according to claim 2 is characterized in that: The inner diameter of the mounting groove is larger than the outer diameter of the hollow pier segment.

4. The assembled hollow mooring pier main structure according to claim 3 is characterized in that: The connecting steel bars are threaded steel bars, and the length extending from the concrete surface is greater than or equal to 20 cm.

5. The assembled hollow mooring pier main structure according to claim 1 is characterized in that: The inner diameter of the hollow pier section is greater than or equal to 1.6m, and the wall thickness is 25cm-30cm.

6. The assembled hollow mooring pier main structure according to claim 2 is characterized in that: The A-type pier section is used to connect the cast-in-place base and its upper pier section. The bottom of the A-type pier section is provided with a plurality of second support blocks, and the second support blocks are provided with positioning protrusions. The position and number of the second support blocks match the position and number of the first support blocks. The positioning protrusions are inserted into the positioning grooves. The top of the A-type pier section is provided with a first connecting groove. The bottom of the B-type pier section is provided with a first connecting protrusion, and the top is provided with a second connecting groove; the first connecting protrusion is connected to the first connecting groove; The bottom of the C-shaped pier section is provided with a second connecting protrusion, and the top is provided with a third connecting groove, and the second connecting protrusion is connected to the second connecting groove; The bottom of the D-shaped pier section is provided with a third connecting protrusion, and the top is provided with a fourth connecting groove, and the third connecting protrusion is connected to the third connecting groove; The bottom of the E-shaped pier section is provided with a fourth connecting protrusion, and the top is a flat opening, and the fourth connecting protrusion is connected to the fourth connecting groove.

7. The assembled hollow mooring pier main structure according to claim 6 is characterized in that: The upper side wall of the C-shaped pier section is provided with a first inner groove, and the third connecting groove is provided along the first inner groove; The side wall of the D-shaped pier section is provided with a second inner groove, and the third connecting protrusion and the fourth connecting groove are provided along the second inner groove; A third inner groove is provided on the lower side wall of the E-shaped pier segment, and the fourth connecting protrusion is provided along the third inner groove; The positions and shapes of the first inner groove, the second inner groove and the third inner groove match each other; mooring hooks are arranged in the first inner groove, the second inner groove and the third inner groove.

8. A method for constructing an assembled hollow mooring pier main structure, for constructing an assembled hollow mooring pier main structure according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Prepare for construction and pour the cast-in-place base on the pile foundation; S2: Connect the A-type pier section to the cast-in-place base and then pour concrete; S3: Connect the remaining hollow pier sections in sequence and pour them layer by layer; S4: In step S3, before each pour, a total station is used to measure and calculate the verticality. If the verticality deviation is less than a preset threshold, the deviation is corrected by adjusting the asymmetric thickness of the subsequent pour; If the verticality is greater than the preset deviation, hydraulic push rods are installed along the circumference of the hollow pier segment to adjust the pier center position by radial pushing until the verticality meets the requirements; S5: Construction is completed.

9. The method for constructing the main structure of the assembled hollow mooring pier according to claim 8, characterized in that: Step S2 specifically includes hoisting the A-type pier section to the corresponding position of the cast-in-place base for installation, so that the first support block is connected to the second support block; The connecting steel bars of the cast-in-place base are in a straight line with the axis of the steel cage at the lower end of the A-type pier section. The steel bars at the corresponding positions are connected by welding with auxiliary bars and then concrete is poured. First, the concrete is poured in the installation groove and the A-type pier section to the surface of the cast-in-place base. After solidification, the concrete is continued to be poured inside the A-type pier section to the middle position of the A-type pier section.

10. The method for constructing the main structure of the assembled hollow mooring pier according to claim 8, characterized in that: The correction of the deviation by adjusting the asymmetric thickness of the subsequent pouring in step S4 is specifically achieved by increasing the pouring thickness on the opposite side of the deviation by utilizing the annular pressure difference generated by the weight of the concrete, and gradually correcting the deviation by adjusting the thickness of the symmetrical sector area; Use a total station to determine the direction of vertical deviation, set up a sector-shaped area template in the opposite direction of the deviation, pour to the preset height, and continue pouring in the sector-shaped area template according to the increasing thickness; The increased thickness is calculated by the following formula: Where H is the total height, the verticality deviation is △i, θ is the central angle range for increasing the pouring thickness, and R is the inner hole radius of the hollow pier section.

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