Wharf structure suitable for crossing water intake of power plant and construction method

Abstract

The invention belongs to the technical field of wharf design, and particularly relates to a wharf structure suitable for crossing a power plant water intake and a construction method. The structure comprises a wharf extension platform, a large-span structure and a transfer platform. The method comprises the following steps: determining the arrangement and construction method of a new wharf platform according to the plane arrangement of an original wharf and the relationship between the original wharf and a water intake; according to the technological characteristics of the wharf, the wharf newly-built platform sets related functions in sequence; the construction technology of mooring ship piers and transfer station abutment foundations close to the periphery of the water intake is determined; and driven pile construction, cast-in-place pile construction, cast-in-place abutment construction, large-span steel structure construction, upper facility construction and transfer station construction are completed, and wharf arrangement and construction crossing the water intake are achieved. According to the method, the problem of reconstruction of the wharf crossing the water intake of the power plant is solved, the design difficulty and the construction workload are effectively reduced on the basis of guaranteeing wharf construction and normal use of the water intake, and the design and construction efficiency is obviously improved.

Description

Technical Field

[0001] The invention belongs to the technical field of dock design, and in particular relates to a dock structure suitable for crossing a water intake of a power plant and a construction method. Background Art

[0002] In order to reduce logistics costs, coal-fired power plants are mostly located in coastal or riverside areas, and thermal power plants are often equipped with dedicated docks for power plants. At the same time, due to the needs of power generation technology, it is necessary to occupy the shoreline around the power plant to set up intake and discharge outlets to meet the needs of circulating water cooling. At present, with the increase in the throughput of power plant docks, how to expand the power plant docks so that it does not affect the location distribution of the water intake while increasing the length of the dock has become an urgent problem to be solved.

[0003] Chinese patent CN105064271A (publication date: November 8, 2015) discloses a dock reconstruction structure and a dock reconstruction construction method. The invention is a reconstruction based on the original dock structure. A plurality of L-shaped piers are arranged at the bottom of the panel on the seaward side of the front line of the original dock, and square piles are arranged between the piers. A plurality of steel pipe piles are arranged vertically at the bottom of each L-shaped pier, thereby realizing the reconstruction of the dock. However, the technology adopted by the invention is relatively traditional and the steps are relatively complicated.

[0004] Chinese patent CN116516888A (publication date: August 1, 2023) discloses a dock reconstruction method and dock. The invention utilizes the residual strength of the old dock structure to improve the structural stability and durability of the old dock after dredging, thereby realizing the upgrading of the old dock. The patent is mainly applied to the transformation and upgrading of conventional gravity docks. The patent has limited usage scenarios and the applicability of the dock reconstruction solution provided is relatively weak.

[0005] Through existing comparative cases, it can be seen that although some current inventions provide technical solutions for dock reconstruction, these technical solutions have limited scope of application and are different from the technical problems that need to be solved by power plant docks. Therefore, how to establish a set of dock structures suitable for crossing the water intake of a power plant and provide related construction methods are technical problems that have not yet been solved in this field. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a wharf structure and construction method suitable for crossing the water intake of a power plant, which can comprehensively consider and realize the layout and construction of the wharf across the water intake. The technical solution is as follows:

[0007] A dock structure suitable for crossing a water intake of a power plant, comprising a dock extension platform, a large-span structure, and a transfer platform;

[0008] The wharf extension platform is connected to the original wharf; one side of the large-span structure is connected to the wharf extension platform, and the other side is connected to the transfer platform;

[0009] The large-span structure spans the water intake;

[0010] The long-span structure includes mooring piers, steel platforms, long-span gallery bridges, and maintenance passages;

[0011] The large-span corridor bridge is respectively arranged at the front and rear extension of the wharf, and the two ends of the large-span corridor bridge are respectively connected to the wharf extension platform and the transfer platform. The large-span corridor bridge at the front end is provided with a mooring pier and a steel platform; the large-span corridor bridge at the rear end is connected to the maintenance passage;

[0012] One side of the steel platform is connected to the dock extension platform, and the other side is connected to the mooring pier.

[0013] Furthermore, the dock extension platform adopts high pile piers and a large span structure.

[0014] Furthermore, the transfer platform includes a transfer station pier and a transfer station; the transfer station is located at the upper part of the transfer platform; and the transfer station pier is located at the lower part of the transfer platform.

[0015] Further, the mooring pier includes a dock platform, a mooring post, a fender, a support extension, and a pier;

[0016] The mooring post is fixed on the upper part of the dock platform; the support extension is fixed on the lower part of the dock platform; a part of the fender is connected to the side of the dock platform, and a part is connected to the extended side of the support; the pier is at the lower part of the dock platform to provide support for the dock.

[0017] Furthermore, the mooring pier and transfer station pier are made of cast-in-place piles.

[0018] Furthermore, the large-span corridor bridge includes a corridor bridge, a connecting block, and a support; both ends of the corridor bridge are respectively connected to the connecting blocks; the connecting blocks are respectively connected to the supports; and the supports are respectively connected to the transfer station pier and the wharf extension platform.

[0019] Furthermore, the covered bridge is a steel structure covered bridge;

[0020] Furthermore, the corridor floor of the covered bridge adopts a composite floor panel, with wind shields on both sides, and the end near the transfer station is fully enclosed with a color steel plate.

[0021] Furthermore, the support is a door-type support.

[0022] A construction method for a wharf structure across a water intake of a power plant comprises the following steps:

[0023] Step S1, determining the layout and construction method of the new dock platform according to the plane layout of the original dock and the relationship between the original dock and the water intake;

[0024] Step S2: According to the characteristics of the wharf process layout, the wharf extension platform, the large-span structure, and the transfer platform are sequentially arranged on the new wharf platform;

[0025] Step S3, determining the construction techniques of the mooring piers and transfer station pier foundations near the water intake;

[0026] Step S4: complete the driven pile construction, cast-in-place pile construction, cast-in-place pier construction, large-span steel structure construction, upper facilities construction and transfer station construction, and realize the layout and construction of the wharf across the water intake.

[0027] Compared with the prior art, the advantages and effects of this application are as follows:

[0028] 1. The present invention provides a dock structure suitable for crossing the water intake of a power plant, which solves the technical problems of continuous arrangement and construction of the dock across the water intake, realizes full utilization of shoreline resources and continuous arrangement of the dock structure, and reduces construction funds to a certain extent.

[0029] 2. The present invention provides a construction method for a wharf structure across a water intake of a power plant, which enables the wharf structure to be arranged and constructed despite the influence of structures such as water intakes and underwater pipelines, thereby solving the problem of continuous arrangement of the wharf, achieving full utilization of shoreline resources, ensuring the needs of ship berthing operations, effectively reducing the design difficulty and construction workload, and significantly improving the design and construction efficiency.

[0030] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0031] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0033] in:

[0034] Figure 1 : Functional zoning map of the wharf across the water intake of the power plant;

[0035] Figure 2 : The process layout of the wharf across the water intake of the power plant;

[0036] Figure 3 : Structure diagram of mooring pier;

[0037] Figure 4 : A flow chart of a construction method applicable to a wharf across a water intake;

[0038] Figure 5 : Relationship diagram of a power plant wharf and surrounding facilities before reconstruction;

[0039] Figure 6 : Layout rendering of a power plant dock after reconstruction;

[0040] Figure 7 : Schematic diagram of the long-span corridor bridge structure;

[0041] Figure markings: 1-original wharf; 2-water intake; 3-new wharf platform; 31-wharf extension platform; 32-long-span corridor bridge; 33-transfer platform; 32a-mooring pier; 32b-steel platform; 32c-long-span corridor bridge; 32d-maintenance passage; 33a-transfer station pier; 33b-transfer station; 32a1-wharf platform; 32a2-mooring bollard; 32a3-fender; 32a4-support extension; 32a5-pier; 32c1-corridor bridge; 32c2-connecting block; 32c3-support. Specific embodiments

[0042] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0043] It should be understood that the references to "one embodiment" or "this embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present application. Therefore, the references to "one embodiment" or "this embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0044] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0045] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0046] The term "at least one" in this article is merely a description of the association relationship of associated objects, indicating that there may be three relationships. For example, at least one of A and B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0047] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0048] Example 1

[0049] Based on Example 1, this example provides a dock structure suitable for crossing the water intake of a power plant. Please refer to Figure 1 As shown, the wharf structure includes a wharf extension platform 31, a large-span structure 32, and a transfer platform 33;

[0050] The dock extension platform 31 is connected to the original dock 1; one side of the large-span structure 32 is connected to the dock extension platform 31 and the other side is connected to the large-span structure 32; the large-span structure 32 spans the water intake 2;

[0051] Please refer to Figure 2 As shown, the large-span structure 32 includes a mooring pier 32a, a steel platform 32b, a large-span gallery bridge 32c, and an inspection channel 32d;

[0052] The large-span corridor bridge 32c is arranged at the front and rear of the wharf, and the two ends of the large-span corridor bridge 32c are respectively connected to the wharf extension platform 31 and the transfer platform 33; the large-span corridor bridge 32c at the front end is provided with a mooring pier 32a and a steel platform 32b; one side of the steel platform 32b is connected to the wharf extension platform 31, and the other side is connected to the mooring pier 32a; the large-span corridor bridge 32c at the rear end is connected to the maintenance passage 32d.

[0053] Furthermore, the dock extension platform 31 adopts high pile piers and a large span structure.

[0054] Furthermore, the transfer platform 33 includes a transfer station pier 33a and a transfer station 33b; the transfer station 33b is located at the upper part of the transfer platform 33; and the transfer station pier 33a is located at the lower part of the transfer platform 33.

[0055] Please refer to Figure 3 As shown, the mooring pier 32a includes a dock platform 32a1, a mooring column 32a2, a fender 32a3, a support extension 32a4, and a pier 32a5;

[0056] The mooring post 32a2 is fixed on the upper part of the dock platform 32a1; the support extension 32a4 is fixed on the lower part of the dock platform 32a1; a part of the fender 32a3 is connected to the side of the dock platform 32a1, and a part of it is connected to the side of the support extension 32a4; the pier 32a5 is at the lower part of the dock platform 32a1 to provide support for the dock.

[0057] Furthermore, the foundations of the mooring pier 32a and the transfer station pier 33a are constructed using cast-in-place piles.

[0058] Technical effect of this embodiment: This embodiment provides a dock structure suitable for crossing the water intake of a power plant, which solves the technical problems of continuous arrangement and construction of the dock across the water intake, realizes full utilization of shoreline resources and continuous arrangement of the dock structure, and reduces construction funds to a certain extent.

[0059] Example 2

[0060] like Figure 4 As shown, this embodiment is a construction method for a wharf structure across a water intake of a power plant based on Embodiment 1, and the method comprises the following steps:

[0061] Step S1, determining the layout and construction method of the new dock platform 3 according to the plane layout of the original dock 1 and the relationship between the original dock 1 and the water intake 2;

[0062] Step S2, according to the characteristics of the wharf process layout, the wharf new platform 3 is sequentially provided with a wharf extension platform 31, a large-span structure 32, and a transfer platform 33;

[0063] Step S3, determining the construction techniques of the foundations of the mooring pier 32a and the transfer station pier 33a near the water intake 2;

[0064] Step S4: complete the driven pile construction, cast-in-place pile construction, cast-in-place pier construction, large-span steel structure construction, upper facilities construction and transfer station construction, and realize the layout and construction of the wharf across the water intake.

[0065] The technical effect of this embodiment is as follows: the wharf structure can be arranged and constructed even under the influence of structures such as water intakes and underwater pipelines, which solves the problem of continuous arrangement of the wharf, realizes full utilization of shoreline resources, and ensures the needs of ship berthing operations.

[0066] Example 3

[0067] Based on Examples 1-2, this example provides a specific application of a construction method for a dock structure across a power plant water intake in a process of remodeling a power plant dock, and the application is as follows:

[0068] The relationship between the original wharf 1 and the surrounding water intake 2 of a power plant before reconstruction is as follows Figure 5 As shown, in order to avoid the mutual influence between the structure of the original wharf 1 and the water intake 2 during the wharf reconstruction, the water intake 2 can be relocated. However, after the water intake 2 is retracted 30m to the shore, the unit power generation coal consumption will increase by about 3-6g, affecting the economic efficiency of the unit operation; and during the relocation of the water intake 2, the unit will stop running, affecting the normal operation of the power plant unit. Therefore, the economic impact caused by the plan of relocating the water intake 2 is relatively large, and the economic benefit of this plan is relatively poor.

[0069] The proposal proposed in this application is to build a wharf across the water intake of the power plant. According to the method provided in this application, after calculation, the original wharf 1 needs to be extended 186.5 meters downstream. The layout effect of the rebuilt wharf is shown in Figure 6 During the construction period, this scheme will not affect the power generation and water intake of the power plant, nor will it cause additional economic impact on the power plant. Therefore, this scheme can be adopted during the transformation of the power plant wharf. The functional division of a power plant wharf after the transformation is shown in the figure below. Figure 1 As shown, the newly built area of ​​the wharf includes a wharf extension platform 31, a large-span corridor bridge 32, and a transfer platform 33.

[0070] The dock extension platform 31 is connected to the original dock 1 ; one side of the large-span structure 32 is connected to the dock extension platform 31 and the other side is connected to the large-span structure 32 ; the large-span structure 32 spans the water intake 2 .

[0071] This application uses a long-span corridor bridge to cross the water intake area, please refer to Figure 7As shown, the large-span corridor bridge 32c includes a corridor bridge 32c1, a connecting block 32c2, and a support 32c3; both ends of the corridor bridge 32c1 are respectively connected to the connecting blocks 32c2; the connecting blocks 32c2 are respectively connected to the supports 32c3; the supports 32c3 are respectively connected to the transfer station pier 33a and the dock extension platform 31.

[0072] Furthermore, the covered bridge 32c1 is a steel structure covered bridge with a span of about 67.5m and a truss height of about 6m.

[0073] Furthermore, the support 32c3 is a door-type support.

[0074] Furthermore, the corridor floor of the covered bridge adopts a composite floor panel, with wind shields on both sides, and the part 70m near the end of the transfer station is fully enclosed with a color steel plate.

[0075] During the construction process, the dock platforms upstream and downstream of the water intake are pre-buried with dowel bars and reinforced concrete brackets to support the upper steel truss structure. At the same time, during the construction period, the dock loading and unloading process facilities within the upstream water source protection area need to be dismantled, and only the ship cable function needs to be retained. The existing dock transfer station, dock belt conveyor and corridor are dismantled, and the belt conveyor and corridor are extended to the end of the pier downstream of the water intake. Two new sections of belt conveyor are added to transfer to the top of the original approach bridge belt conveyor. The ship unloader track is correspondingly extended to the end of the new dock to meet the unloading range, and the iron remover needs to be moved to the head of the extended belt conveyor.

[0076] A cast-in-place pile foundation is used at the wharf pier near the outlet 2 to reduce the mutual influence with the outlet 2. A transfer station is set at the wharf head pier, and the belt conveyor corridor is transferred from the front edge through the transfer station to the rear edge to connect the approach bridge belt conveyor.

[0077] Technical effect of this embodiment: This embodiment provides a construction method for a dock structure that is suitable for crossing a power plant water intake, and its specific application in the process of renovating a power plant dock, showing that the technical solution of this application can minimize the economic impact compared to the solution of relocating the water intake. This application enables the dock structure to be arranged and constructed even under the influence of structures such as water intakes and underwater pipelines, solves the problem of continuous arrangement of the dock, realizes full utilization of shoreline resources, ensures the needs of ship berthing operations, effectively reduces the design difficulty and construction workload, and significantly improves the design and construction efficiency.

[0078] The above description is only the preferred embodiment of the present invention, which does not limit the protection scope of the present invention. For those skilled in the art, the present invention can be modified and varied in various ways. Within the spirit and principle of the present invention, any change, modification, replacement, integration and parameter change of these embodiments by conventional substitution or capable of achieving the same function without departing from the principle and spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A dock structure suitable for crossing a water intake of a power plant, characterized in that: It includes a dock extension platform (31), a large-span structure (32), and a transfer platform (33); The wharf extension platform (31) is connected to the original wharf (1); one side of the large-span structure (32) is connected to the wharf extension platform (31), and the other side is connected to the transfer platform (33); The large-span structure (32) spans the water intake (2); The large-span structure (32) includes a mooring pier (32a), a steel platform (32b), a large-span gallery bridge (32c), and an inspection channel (32d); The large-span corridor bridge (32c) is respectively arranged at the front and rear of the wharf, and the two ends of the large-span corridor bridge (32c) are respectively connected to the wharf extension platform (31) and the transfer platform (33), and the front end of the large-span corridor bridge (32c) is provided with a mooring pier (32a) and a steel platform (32b); the rear end of the large-span corridor bridge (32c) is connected to the maintenance passage (32d); One side of the steel platform (32b) is connected to the dock extension platform (31), and the other side is connected to the mooring pier (32a).

2. A dock structure suitable for crossing a water intake of a power plant according to claim 1, characterized in that: The dock extension platform (31) adopts a high pile pier and a large span structure.

3. A dock structure suitable for crossing a water intake of a power plant according to claim 1, characterized in that: The transfer platform (33) comprises a transfer station pier (33a) and a transfer station (33b); the transfer station (33b) is located at the upper part of the transfer platform (33); and the transfer station pier (33a) is located at the lower part of the transfer platform (33).

4. A dock structure suitable for crossing a water intake of a power plant according to claim 1, characterized in that: The mooring pier (32a) comprises a dock platform (32a1), a mooring post (32a2), a fender (32a3), a support extension (32a4), and a pier (32a5); The mooring post (32a2) is fixed to the upper part of the dock platform (32a1); the support extension (32a4) is fixed to the lower part of the dock platform (32a1); a part of the fender (32a3) is connected to the side of the dock platform (32a1), and a part of it is connected to the side of the support extension (32a4); the pier (32a5) is at the lower part of the dock platform (32a1) to provide support for the dock.

5. A dock structure suitable for crossing a water intake of a power plant according to any one of claims 3 to 4, characterized in that: The mooring pier (32a) and the transfer station pier (33a) are cast-in-place piles.

6. A dock structure suitable for crossing a water intake of a power plant according to claim 4, characterized in that: The large-span corridor bridge (32c) comprises a corridor bridge (32c1), a connecting block (32c2), and a support (32c3); both ends of the corridor bridge (32c1) are respectively connected to the connecting blocks (32c2); the connecting blocks (32c2) are respectively connected to the supports (32c3); and the supports (32c3) are respectively connected to the transfer station pier (33a) and the dock extension platform (31).

7. A dock structure suitable for crossing a water intake of a power plant according to claim 6, characterized in that: The covered bridge (32c1) is a steel structure covered bridge.

8. A dock structure suitable for crossing a water intake of a power plant according to claim 7, characterized in that: The corridor floor of the corridor bridge adopts a combined floor panel, and wind shields are arranged on both sides. The end close to the transfer station (33b) is fully enclosed by a colored steel plate.

9. A dock structure suitable for crossing a water intake of a power plant according to claim 6, characterized in that: The support (32c3) is a door-type support.

10. A construction method for a wharf structure across a water intake of a power plant according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step S1, determining the layout and construction method of the new wharf platform (3) according to the plane layout of the original wharf (1) and the relationship between the original wharf (1) and the water intake (2); Step S2, according to the characteristics of the wharf process layout, the wharf new platform (3) is provided with a wharf extension platform (31), a large span structure (32), and a transfer platform (33) in sequence; Step S3, determining the construction techniques of the foundations of the mooring pier (32a) and the transfer station pier (33a) near the water intake (2); Step S4: complete the driven pile construction, cast-in-place pile construction, cast-in-place pier construction, large-span steel structure construction, upper facilities construction and transfer station construction, and realize the layout and construction of the wharf across the water intake.

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