Assembly type solid 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 solid berthing pier main body structure and a construction method, and the assembly type solid berthing pier main body structure comprises a cast-in-place base, a prefabricated solid pier joint and a prefabricated hoop mold; the prefabricated solid pier joint comprises an A-type pier joint, a B-type pier joint and a C-type pier joint; sequentially assembling the A-type pier joint, the B-type pier joint and the C-type pier joint from the upper part of the cast-in-place base, and pouring and fixing the A-type pier joint, the B-type pier joint and the C-type pier joint; the prefabricated solid pier joints are connected through the prefabricated hoop molds, and the prefabricated solid pier joints and the cast-in-place base are connected through the prefabricated hoop molds. The fabricated solid pier joints are adopted, tedious procedures such as multiple times of mounting and dismounting of formworks are avoided, safety risks are remarkably reduced, construction efficiency is remarkably improved, the surface of the berthing pier is free of voids and pits and smooth and flat, and the appearance quality is greatly improved compared with a conventional construction method. The solid pier joints are connected through side strip welding, and the integrity of the berthing pier is improved through post-pouring concrete.

Description

Technical Field

[0001] This invention relates to the field of prefabricated berthing piers, specifically to a prefabricated solid berthing pier main structure and construction method. Background Technology A berthing pier is a temporary berthing pier for ships before entering a lock. When ships pass through a lock, the water flow conditions change significantly due to the lock's flushing and discharge. Usually, for the safety of ships, other ships should wait at anchor while the ships in front pass through the lock. To improve the lock passage capacity, berthing piers are set up between the anchorage and the lock for ships to temporarily berth before entering the lock.

[0002] For example, Chinese utility model patent application CN215715050U discloses a pile-pier type bidirectional berthing pier structure, including a pier cap, pile foundations, and a pier body. The pile foundations are fixedly connected to the bottom of the pier cap, and the pier body is fixedly connected to the top of the pier cap. Both sides of the pier body are provided with water-proof plate slots. Multiple fixed mooring bollards are fixedly connected to the water-facing side of the pier body. The side of the pier body away from the fixed mooring bollards is provided with a pre-embedded fixed mooring bollard. This structure can solve the berthing problem of ships in the proposed lock by utilizing its own structural characteristics.

[0003] The main structure of the berth of the ship pier is generally constructed using a layered cast-in-place method, which requires the reinforcement binding, formwork installation and concrete pouring to be carried out layer by layer from bottom to top. However, the existing ship piers require multiple reinforcement binding and formwork installation and removal, which is complicated, inefficient and time-consuming, and seriously affects the construction cost.

[0004] Therefore, there is an urgent need for a prefabricated solid berthing pier main structure and construction method to solve the existing construction difficulties. Summary of the Invention

[0005] To avoid the aforementioned problems in the existing technology, the purpose of this invention is to provide a prefabricated solid berthing pier main structure and construction method.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated solid berthing pier main structure, comprising a cast-in-place base, a prefabricated solid pier section, and a prefabricated clamping mold; The precast solid pier section includes type A pier section, type B pier section and type C pier section; type A pier section, type B pier section and type C pier section are assembled sequentially from the upper part of the cast-in-place base and then cast and fixed. The precast solid pier sections are connected to each other and to the cast-in-place base through the precast clamp mold.

[0007] The present invention is further configured such that the cast-in-place base includes a cast-in-place pile foundation, a cast-in-place pile cap, and a base pier body; The bottom of the cast-in-place foundation is supported by several cast-in-place pile foundations, and the top of the cast-in-place foundation is provided with the base pier, the top of which is reserved with connecting bars.

[0008] All connecting bars are made of threaded steel bars, and the connecting bars extend about 20cm beyond the surface of the base pier.

[0009] The present invention is further configured such that a first groove is provided in the center of the top of the base body, and a tongue and groove are provided on the edge of the base body.

[0010] The present invention is further configured such that the A-type pier section is used to connect the cast-in-place base with other precast solid pier sections, the bottom of the A-type pier section is provided with a first protruding column, and the top is provided with a second groove, the first protruding column being inserted into the first groove; the bottom end of the A-type pier section is provided with a plurality of connecting ribs around the first protruding column, and the top end of the A-type pier section is provided with a plurality of connecting ribs around the second groove. The bottom of the B-type pier section is provided with a second protruding column and the top is provided with a third groove; the second protruding column is connected to the second groove; the bottom end of the B-type pier section is provided with several connecting ribs around the second protruding column, and the top end of the B-type pier section is provided with several connecting ribs around the third groove. The bottom of the C-shaped pier section is provided with a third protruding column, which is connected to a third groove. Several connecting ribs are provided around the bottom of the C-shaped pier section with the third protruding column.

[0011] The present invention is further configured such that the side wall of the precast solid pier section is provided with at least two injection ports, and the bottom of the precast solid pier section is provided with at least two injection outlets, and the injection ports are connected to the injection outlets.

[0012] The invention is further configured such that the end of each precast solid pier section with a pre-reserved connecting bar is provided with a tongue and groove joint. The connecting bar is made of threaded steel bar, and the extended length is greater than or equal to 20cm.

[0013] The present invention is further configured such that the prefabricated clamp mold includes two semi-circular ring clamps, and the upper and lower edges of the semi-circular ring clamps are provided with tongue and groove joints.

[0014] The present invention is further configured such that the prefabricated clamp mold also includes locking ribs, which are arranged along the circumferential direction on the inner wall of the semi-circular clamp.

[0015] The locking bars are installed so that they are encased in the poured concrete, thus avoiding the risk of the clamps falling off.

[0016] The present invention is further configured such that the B-type pier section is a standard section, and the number can be increased or decreased as needed.

[0017] The present invention is further configured such that the side walls of the B-type pier section and the C-type pier section are provided with fixing grooves, the fixing grooves are respectively arranged along the length direction of the B-type pier section and the C-type pier section, and the fixing grooves are provided with mooring hooks.

[0018] A construction method for the main structure of a prefabricated solid berthing pier includes the following steps: S1: Prepare for construction and pour the initial cast-in-place base at the preset construction location; S2: Insert the first protruding column of the A-type pier section into the first groove on the cast-in-place base, align the connecting bars at the connection end, and then perform bar welding on the connecting bars. S3: Install a precast clamp mold between the A-type pier section and the cast-in-place base, snap the corresponding tongue and groove, reinforce the connection of the precast clamp mold with ropes or tensioners, and pour concrete into the precast clamp mold through the injection port to achieve a fixed connection. S4: Connect the B-type pier section and the C-type pier section sequentially according to the methods in steps S2-S3; S5: Construction completed.

[0019] It should be noted that in step S3, in order to prevent deviations in the verticality of the pier after pouring, layered pouring can be carried out. Before each pour, the verticality is measured and calculated using a total station. If the verticality deviation is less than the preset threshold, the deviation can be corrected by adjusting the asymmetrical thickness of the subsequent pours. Specifically, utilizing the circumferential pressure difference generated by the concrete's own weight, the pouring thickness is increased on the opposite side of the deviation. A total station is used to determine the direction of the verticality deviation. After setting up a fan-shaped area template in the opposite direction of the deviation, precast clamp molds are installed, with the height of the fan-shaped area template being less than the height of the precast clamp molds. First, concrete is poured into the fan-shaped area template. After the gravity of the symmetrical fan-shaped area corrects the deviation, concrete continues to be poured from one side of the inlet until it flows out from other inlets. Then, all inlets are plugged. After the concrete has initially set, the plugs are removed, and the inlets are sealed with cement mortar.

[0020] If the verticality is greater than the preset deviation, hydraulic push rods are installed circumferentially along the precast solid pier section, and the position of the pier center is adjusted by radial jacking until the verticality meets the requirements.

[0021] In summary, the beneficial effects of the above-mentioned technical solution of the present invention are as follows: 1. The construction of the berth utilizes prefabricated solid pier sections, avoiding the cumbersome process of multiple formwork installations and removals, significantly reducing safety risks, and markedly improving construction efficiency. The surface of the berth is smooth and free of honeycomb pits, resulting in a much higher appearance quality compared to conventional construction methods. The solid pier sections are connected by butt welding, and the overall integrity of the berth is enhanced by post-cast concrete. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the main structure of a prefabricated solid berthing pier; Figure 2 This is a schematic diagram of the cast-in-place base structure; Figure 3 This is a schematic diagram of a type A pier section structure; Figure 4 This is a schematic diagram of a type B pier section structure; Figure 5 This is a schematic diagram of a C-shaped pier section structure; Figure 6 This is a schematic diagram of the injection port; Figure 7 This is a schematic diagram of a prefabricated clamp mold structure; Figure 8 This is a schematic diagram of the structure after the prefabricated clamp mold is installed.

[0024] The meanings of the reference numerals in the attached figures are as follows: 1. Cast-in-place base; 11. Cast-in-place pile foundation; 12. Cast-in-place pile cap; 13. Base pier; 14. First groove; 2. Type A pier section; 21. First protruding column; 22. Second groove; 3. Type B pier section; 31. Second protruding column; 32. Third groove; 4. C-shaped pier section; 41. Third protruding column; 5. Precast clamp mold; 51. Locking reinforcement; 6. Inlet for pouring; 7. Mooring hook; 8. Connecting rib. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of the present invention, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of the present invention.

[0026] Furthermore, the directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0027] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0028] Example 1: like Figures 1-8 As shown, this is a preferred embodiment of the present invention, a prefabricated solid berthing pier main structure, including a cast-in-place base 1, a prefabricated solid pier section and a prefabricated clamp mold 5; The precast solid pier section includes type A pier section 2, type B pier section 3 and type C pier section 4; type A pier section 2, type B pier section 3 and type C pier section 4 are assembled sequentially from the upper part of the cast-in-place base 1 and then cast and fixed. The precast solid pier sections are connected to each other and to the cast-in-place base 1 via the precast clamp mold 5.

[0029] like Figure 2 As shown, the cast-in-place base 1 includes a cast-in-place pile foundation 11, a cast-in-place pile cap 12, and a base pier body 13; The bottom of the cast-in-place foundation 12 is supported by several cast-in-place pile foundations 11, and the top of the cast-in-place foundation 12 is provided with the base pier 13, and the top of the base pier 13 is reserved with connecting bars 8.

[0030] All connecting bars 8 are made of threaded steel bars, and the connecting bars 8 extend about 20cm beyond the surface of the base pier 13.

[0031] The base body 13 is provided with a first groove 14 at the center of its top, and the base body 13 is provided with a tongue and groove joint at its edge.

[0032] like Figures 3-5 As shown, the A-type pier section 2 is used to connect the cast-in-place base 1 with other precast solid pier sections. The bottom of the A-type pier section 2 is provided with a first protruding column 21 and the top is provided with a second groove 22. The first protruding column 21 is inserted into the first groove 14. Several connecting ribs 8 are provided around the bottom end of the A-type pier section 2 with the first protruding column 21, and several connecting ribs 8 are provided around the top end of the A-type pier section 2 with the second groove 22. The bottom of the B-type pier section 3 is provided with a second protruding column 31 and the top is provided with a third groove 32; the second protruding column 31 is connected to the second groove 32; the bottom end of the B-type pier section 3 is provided with several connecting ribs 8 around the second protruding column 31, and the top end of the B-type pier section 3 is provided with several connecting ribs 8 around the third groove 32. The bottom of the C-shaped pier section 4 is provided with a third protruding column 41, which is connected to the third groove 32. Several connecting ribs 8 are provided around the bottom of the C-shaped pier section 4 with the third protruding column 41.

[0033] like Figure 6As shown, the side wall of the precast solid pier section is provided with at least two injection ports 6, and the bottom of the precast solid pier section is provided with at least two injection outlets, and the injection ports are connected to the injection outlets.

[0034] The precast solid pier section has a tongue and groove joint at one end where the connecting bar 8 is pre-reserved. The connecting bar 8 is made of threaded steel bar, and the extended length is greater than or equal to 20cm.

[0035] like Figures 7-8 As shown, the prefabricated clamp mold 5 includes two semi-circular ring clamps, and the upper and lower edges of the semi-circular ring clamps are provided with tongue and groove joints.

[0036] The precast clamp mold 5 also includes locking bars 51, which are arranged circumferentially on the inner wall of the semi-circular clamp. The locking bars 51 are encased in the poured concrete to prevent the clamp mold from detaching.

[0037] The B-type pier section 3 is a standard section, and the number can be increased or decreased as needed. Both the B-type pier section 3 and the C-type pier section 4 have fixing grooves on their side walls, which are respectively arranged along the length of the B-type pier section 3 and the C-type pier section 4. The fixing grooves are equipped with mooring hooks 7.

[0038] Example 2: A construction method for the main structure of a prefabricated solid berthing pier includes the following steps: S1: Prepare for construction by pouring the initial cast-in-place base 1 at the pre-set construction location; S2: Insert the first protruding column 21 of the A-type pier section 2 into the first groove 13 on the cast-in-place base 1, align the connecting rib 8 at the connection end, and then perform bar welding on the connecting rib 8.

[0039] Before installing the A-type pier section 2, pour cement mortar with the same mix ratio as the precast component into the groove at the top of the base pier body. The amount should be sufficient to ensure that the first protruding column 21 of the A-type pier section 2 is fully inserted into the first groove 22, and the mortar can slightly overflow the top surface of the base pier body 13. After the mortar is poured, the A-type pier section 2 should be installed and adjusted quickly so that the center lines of the upper and lower connecting bars 8 are on the same straight line, and then connected by butt welding.

[0040] S3: Install a precast clamp mold 5 between the A-type pier section 2 and the cast-in-place base 1, snap the corresponding tongue and groove, reinforce the connection of the precast clamp mold 5 with ropes or tensioners, and pour concrete into the precast clamp mold 6 through the injection port 6 to achieve a fixed connection. To prevent deviations in the verticality of the pier after pouring, layered pouring can be carried out. Before each pour, the verticality can be measured and calculated using a total station. If the verticality deviation is less than the preset threshold, the deviation can be corrected by adjusting the asymmetrical thickness of the subsequent pours. Specifically, utilizing the circumferential pressure difference generated by the concrete's own weight, the pouring thickness is increased on the opposite side of the deviation. A total station is used to determine the direction of the verticality deviation. After setting up a fan-shaped area template in the opposite direction of the deviation, a precast clamp mold 5 is installed, with the height of the fan-shaped area template being less than the height of the precast clamp mold 5. First, concrete is poured into the fan-shaped area template. After correcting the deviation through the gravity of the symmetrical fan-shaped area, concrete continues to be poured from one side's injection port 6 until concrete flows out from other injection ports 6. Then, all injection ports 6 are plugged. After the concrete has initially set, the plugs are removed, and the injection ports are sealed with cement mortar. Self-compacting fine aggregate concrete is used.

[0041] If the verticality is greater than the preset deviation, hydraulic push rods are installed circumferentially along the precast solid pier section, and the position of the pier center is adjusted by radial jacking until the verticality meets the requirements.

[0042] S4: Connect type B pier section 3 and type C pier section 4 sequentially according to steps S2-S3; S5: Construction completed.

[0043] 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 embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A prefabricated solid berthing pier main structure, characterized in that, This includes cast-in-place base, precast solid pier sections, and precast clamp molds; The precast solid pier section includes type A pier section, type B pier section and type C pier section; type A pier section, type B pier section and type C pier section are assembled sequentially from the upper part of the cast-in-place base and then cast and fixed. The precast solid pier sections are connected to each other and to the cast-in-place base via the precast clamp mold.

2. The prefabricated solid berthing pier main structure according to claim 1, characterized in that, The cast-in-place base includes a cast-in-place pile foundation, a cast-in-place pile cap, and a base pier. The bottom of the cast-in-place foundation is supported by several cast-in-place pile foundations, and the top of the cast-in-place foundation is provided with the base pier, the top of which is reserved with connecting bars.

3. The prefabricated solid berthing pier main structure according to claim 2, characterized in that, The base pier has a first groove in the center of its top and a tongue and groove joint on its edge.

4. The prefabricated solid berthing pier main structure according to claim 3, characterized in that, The A-type pier section is used to connect the cast-in-place base with other precast solid pier sections. The bottom of the A-type pier section is provided with a first protruding column and the top is provided with a second groove. The first protruding column is inserted into the first groove. The bottom end of the A-type pier section is provided with several connecting ribs around the first protruding column, and the top end of the A-type pier section is provided with several connecting ribs around the second groove. The bottom of the B-type pier section is provided with a second protruding column and the top is provided with a third groove; the second protruding column is connected to the second groove; the bottom end of the B-type pier section is provided with several connecting ribs around the second protruding column, and the top end of the B-type pier section is provided with several connecting ribs around the third groove. The bottom of the C-shaped pier section is provided with a third protruding column, which is connected to a third groove. Several connecting ribs are provided around the bottom of the C-shaped pier section with the third protruding column.

5. The prefabricated solid berthing pier main structure according to claim 4, characterized in that, The precast solid pier section has at least two injection ports on its side wall and at least two injection outlets on its bottom. The injection ports are connected to the injection outlets.

6. The prefabricated solid berthing pier main structure according to claim 4, characterized in that, The end of each precast solid pier section with a pre-reserved connecting bar is provided with a tongue and groove joint.

7. The prefabricated solid berthing pier main structure according to claim 1, characterized in that, The prefabricated clamp mold includes two semi-circular ring clamps, and the upper and lower edges of the semi-circular ring clamps are provided with tongue and groove joints.

8. The prefabricated solid berthing pier main structure according to claim 7, characterized in that, The prefabricated clamp mold also includes locking ribs, which are arranged circumferentially on the inner wall of the semi-circular clamp.

9. The prefabricated solid berthing pier main structure according to claim 1, characterized in that, Both the B-type and C-type pier sections have fixing grooves on their side walls. The fixing grooves are respectively arranged along the length of the B-type and C-type pier sections, and mooring hooks are installed in the fixing grooves.

10. A construction method for a prefabricated solid berthing pier main structure, used to construct the prefabricated solid berthing pier main structure as described in any one of claims 1-9, comprising the following steps: S1: Prepare for construction and pour the initial cast-in-place base at the preset construction location; S2: Insert the first protruding column of the A-type pier section into the first groove on the cast-in-place base, align the connecting bars at the connection end, and then perform bar welding on the connecting bars. S3: Install a precast clamp mold between the A-type pier section and the cast-in-place base, snap the corresponding tongue and groove, reinforce the connection of the precast clamp mold with ropes or tensioners, and pour concrete into the precast clamp mold through the injection port to achieve a fixed connection. S4: Connect the B-type pier section and the C-type pier section sequentially according to the methods in steps S2-S3; S5: Construction completed.

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