Fabricated gate bottom plate structure and construction method

Abstract

The invention relates to the technical field of water gate engineering, and discloses a fabricated gate bottom plate structure and a construction method.The fabricated gate bottom plate structure comprises a plurality of vertically-arranged steel pipe piles and a plurality of prefabricated casing box modules; the pouring jacket modules are spliced to form a gate bottom plate body; each casing box module comprises a plurality of cabin units, and the cabin units are longitudinally arranged in a tooth-shaped structure in a staggered mode. According to the fabricated gate bottom plate structure and the construction method, the whole gate bottom plate body is divided into a plurality of pouring jacket modules which are prefabricated in a factory and assembled on site, after the multiple pouring jacket modules are installed in place, a diver connects a concrete pouring pipe underwater, opens a drainage hole, pours bottom sealing concrete underwater, and after it is confirmed that the interior of the pouring jacket is closed, the gate bottom plate body is constructed. And pouring underwater non-segregation concrete in different bins, and judging the pouring condition according to the volume and the slurry overflowing condition of the drainage holes. Gaps between the pouring jackets are integrally formed by pouring concrete through a guide pipe method, so that the gate bottom plate body is quickly constructed, and the construction period is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of sluice engineering, and in particular to an assembled sluice bottom plate structure and a construction method. Background Art

[0002] As the core load-bearing component of a sluice project, the gate floor's structure and construction techniques directly impact project quality, duration, and cost. While traditional cast-in-place gate floor technology is mature, it suffers from low efficiency and high environmental dependence. Prefabricated gate floor slabs, with their advantages of industrialized production and rapid construction, are proving effective in large-span waterways with heavy shipping traffic.

[0003] Representative large-span navigation gates completed both domestically and internationally include the Thames River Tidal Barrier in the UK, with a maximum opening width of 61m. Its base plate structure features a monolithic cast-in-place reinforced concrete caisson foundation, achieved through a combination of prefabrication and cast-in-place construction. The Maaslande Wave Barrier in the Netherlands has a span of 360m, and its base plate comprises three main components: a prestressed concrete caisson foundation, a spherical hinge support platform, and a tapered steel-concrete composite structure. my country's earliest large-span sluice gate is the Changzhou New Gate in Jiangsu Province, with a maximum opening width of 60m and a monolithic flat floor. In recent years, with the trend towards larger-scale and more scenic urban water conservancy projects and the widespread use of new materials, the design and research of new sluice gates has become a significant development trend. Typical examples include the Suzhou Creek Sluice Gate in Shanghai, with a single opening width of 100m; the Sanchakou Sluice Gate on the Qinhuai River in Nanjing, with a maximum opening width of 40m; and the Zhonglou Sluice Gate in Changzhou, with a gate width of 90m.

[0004] Currently, tide gates are mainly divided into integral cast-in-place, prefabricated, and steel-concrete hybrid types according to their structural form. Most gate bottom plates are constructed using cast-in-place technology, and the main structural behaviors are divided into two types: integral cast-in-place tide gate bottom plates and separated bottom plates. In the integral cast-in-place bottom plate, the gate piers and bottom plates are cast as a whole, with segmented joints set on the gate piers. The separated bottom plate is separated by the gate piers and bottom plates through the provision of settlement joints, and then cast separately. Although cast-in-place gate bottom plates have good integrity and excellent seismic performance, and are suitable for complex foundations, they still have problems such as long construction periods, the susceptibility to temperature cracks, and the generation of large amounts of dust and noise during on-site dry operations. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides an assembled gate bottom plate structure and a construction method, which solve the problems mentioned in the above background.

[0006] The present invention provides the following technical solutions: an assembled gate bottom plate structure, comprising: a plurality of vertically arranged steel pipe piles, and a plurality of prefabricated casing modules;

[0007] The casing modules are assembled to form the gate bottom plate body;

[0008] Each casing module includes multiple cabin units, and the multiple cabin units are arranged in a staggered manner in a tooth-like structure in the longitudinal direction, and the adjacent casing modules enhance the anti-slip performance in the water flow direction through the tooth-like structure.

[0009] Preferably, a measurement and control tower is provided on the top of the casing module, and the measurement and control tower is integrated with a floating stability controller, a winch and a connecting cable;

[0010] The floating stability controller achieves module floating stability by adjusting the water level in the cabin unit.

[0011] Preferably, the bottom of the casing module is provided with a docking hole matching the steel pipe pile.

[0012] Preferably, a cable guide for connecting a cable guide is provided on the top of the casing module.

[0013] Preferably, the number of the casing modules is 17, the plane size is 80m×22.5m, and the span of the gate bottom plate after the casing modules are assembled is 400m;

[0014] The number of the steel pipe piles is 583, with a diameter of 2540 mm and a length of 45.5 m.

[0015] A construction method for an assembled gate bottom plate structure comprises the following steps:

[0016] Step S1, foundation trench dredging: excavating the foundation trench and leveling it to a preset elevation;

[0017] Step S2, prefabrication of the gate bottom plate casing module;

[0018] Step S3, transporting the gate bottom plate casing module;

[0019] Step S4, installing the gate bottom plate casing;

[0020] Step S5, concrete pouring;

[0021] Step S6: backfilling.

[0022] Preferably, the step S3 includes:

[0023] Step S31, determining the freeboard height of the housing module;

[0024] Step S32: Install buoys on both sides of the housing module, use the buoys to assist the housing module in floating, and set the floating water level and the undocking water level according to the tide;

[0025] Step S33: The tugboat tows the container module to the outfitting dock and mooring, and installs a measurement control tower on the container module. The measurement control tower is equipped with a floating stability controller, a winch, and connecting cables. The floating stability controller is used to adjust the water level in the cabin unit to a stable state.

[0026] Step S34: Float and tow the vessel to the construction site under the traction of a shore-based winch and a ground anchor.

[0027] Preferably, the step S4 includes:

[0028] Step S41, using suction anchor blocks to position the casing module;

[0029] Step S42, using a crane vessel sinking method to overcome transcritical surface instability, and synchronously adjusting the water level of each compartment unit through a buoyancy stability controller;

[0030] Step S43, measuring the relative position of the control tower and the gate pier to control the elevation and plane position of the casing module;

[0031] Step S44: Open the exhaust hole to place the casing module on top of the steel pipe pile.

[0032] Preferably, the step S5 includes:

[0033] Step S51: After the gate bottom plate casing is installed in place, the diver connects the concrete pouring pipe underwater, opens the drainage hole, and pours the bottom concrete underwater.

[0034] Step S52: After confirming that the cabin unit is sealed, pour underwater non-segregated concrete in separate compartments, and judge the pouring status based on the volume and the overflow of slurry from the drainage holes;

[0035] Step S52: The cabin unit box is poured with concrete using the conduit method to form a whole.

[0036] Preferably, after the concrete construction of the gate bottom plate is completed, a backhoe dredger is used to backfill the over-excavated part of the foundation trench with gravel to the level of the apron bottom.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] In this invention, the gate bottom plate is prefabricated in multiple casing modules and assembled on-site. After the casing modules are installed, divers connect the concrete pouring pipe underwater, open the drainage holes, and pour the bottom concrete underwater. After confirming that the casing is sealed, they pour underwater non-segregated concrete in separate compartments. The pouring status is determined by the volume and the amount of slurry overflowing from the drainage holes. The conduit method is used between the casings to pour concrete into a single unit, allowing for rapid construction of the gate bottom plate and shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the structure of the gate bottom plate body of the present invention;

[0040] Figure 2 This is a schematic diagram of the modular structure of the housing of the present invention;

[0041] Figure 3 This is a schematic diagram of the docking structure between the casing module and the steel pipe pile of the present invention;

[0042] Figure 4 This is a schematic diagram of the structure of the measurement control tower of the present invention;

[0043] Figure 5 This is a schematic structural diagram of the tugboat of the present invention;

[0044] Figure 6 This is a schematic diagram of the suction anchor block structure of the present invention;

[0045] Figure 7 It is a flow chart of the present invention.

[0046] In the figure: 1. Lock base body; 2. Steel pipe pile; 3. Casing module; 31. Cabin unit; 4. Measurement and control tower; 41. Floating stability controller; 42. Winch; 43. Connecting cable; 44. Fairlead; 5. Buoy; 6. Towing vessel; 7. Suction anchor block; 8. Crane vessel. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0048] See also Figure 1-7 , an assembled gate bottom plate structure and construction method, comprising: a plurality of vertically arranged steel pipe piles 2, and a plurality of prefabricated casing modules 3;

[0049] The casing modules 3 are assembled to form the gate bottom plate body 1;

[0050] Each casing module 3 includes a plurality of cabin units 31 , and the plurality of cabin units 31 are arranged in a staggered manner in a tooth-like structure in the longitudinal direction, and the adjacent casing modules 3 enhance the anti-slip performance in the water flow direction through the tooth-like structure.

[0051] A measurement control tower 4 is provided on the top of the housing module 3. The measurement control tower 4 integrates a floating stability controller 41, a winch 42 and a connecting cable 43;

[0052] The floating stability controller 41 achieves module floating stability by adjusting the water level in the cabin unit 31 .

[0053] A docking hole matching the steel pipe pile 2 is provided at the bottom of the casing module 3 .

[0054] A cable guide 44 for guiding the connecting cable 43 is provided on the top of the casing module 3 .

[0055] The number of casing modules 3 is 17, with a plane size of 80m×22.5m, and the span of the gate bottom plate after the casing modules 3 are assembled is 400m;

[0056] The number of steel pipe piles 2 is 583, with a diameter of 2540 mm and a length of 45.5 m.

[0057] A construction method for an assembled gate bottom plate structure comprises the following steps:

[0058] Step S1, foundation trench dredging: excavating the foundation trench and leveling it to a preset elevation;

[0059] Step S2, prefabrication of the gate bottom plate casing module 3;

[0060] Step S3, transporting the gate bottom plate casing module 3;

[0061] Step S4, installing the gate bottom plate casing;

[0062] Step S5, concrete pouring;

[0063] Step S6: backfilling.

[0064] Step S3 includes:

[0065] Step S31, determining the freeboard height of the housing module 3;

[0066] Step S32: Install buoys 5 on both sides of the housing module 3, use the buoys 5 to assist the housing module 3 in floating, and set the floating water level and the undocking water level according to the tide;

[0067] In step S33, the tugboat 6 tows the container module 3 to the outfitting dock and mooring, and installs a measurement control tower 4 on the container module 3. The measurement control tower 4 is equipped with a floating stability controller 41, a winch 42 and a connecting cable 43. The floating stability controller 41 is used to adjust the water level in the cabin unit 31 to a stable state.

[0068] Step S34: Float and tow the vessel to the construction site under the traction of the shore-based winch 42 and the ground anchor;

[0069] After the casing module 3 is floated to the construction site, it is positioned using suction anchor blocks 7. The suction anchor blocks 7 can provide greater pulling force than traditional ship anchors. The casing module 3 is sunk by a crane ship, and the crane ship is used to overcome the problem of instability of the casing module 3 across the critical surface. The floating stability control system adjusts the water level in each compartment to achieve stable sinking installation of the casing. The relative position of the measurement control tower 4 and the gate pier is used to control the position and elevation of the casing module 3. The casing module 3 is placed on the steel pipe pile 2 to complete the underwater installation of the casing module 3.

[0070] Step S4 includes:

[0071] Step S41, using the suction anchor block 7 to position the casing module 3;

[0072] Step S42, using the crane vessel 8 to sink the vessel to overcome transcritical surface instability, and synchronously adjusting the water level of each cabin unit 31 through the floating stability controller 41;

[0073] Step S43, measuring the relative position between the control tower 4 and the gate pier to control the elevation and plane position of the casing module 3;

[0074] Step S44 , opening the exhaust hole, so that the casing module 3 is placed on the top of the steel pipe pile 2 .

[0075] Step S5 includes:

[0076] Step S51: After the gate bottom plate casing is installed in place, the diver connects the concrete pouring pipe underwater, opens the drainage hole, and pours the bottom concrete underwater.

[0077] Step S52: After confirming that the cabin unit 31 is sealed, pour underwater non-segregated concrete in separate compartments, and judge the pouring status based on the volume and the overflow of slurry from the drainage holes;

[0078] Step S52: The cabin unit 31 is integrally formed by pouring concrete between the boxes using the conduit method.

[0079] After the concrete construction of the gate bottom plate is completed, a backhoe dredger is used to backfill the over-excavated part of the foundation trench with gravel to the bottom elevation of the apron.

[0080] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An assembled gate bottom plate structure, characterized in that: include: A plurality of vertically arranged steel pipe piles (2) and a plurality of prefabricated casing modules (3); The casing modules (3) are assembled to form a gate bottom plate body (1); Each casing module (3) comprises a plurality of cabin units (31), the plurality of cabin units (31) are arranged in a staggered manner in a longitudinal direction in a tooth-like structure, and the adjacent casing modules (3) enhance anti-slip performance in the direction of water flow through the tooth-like structure.

2. The assembled gate bottom plate structure according to claim 1, characterized in that: A measurement control tower (4) is provided on the top of the casing module (3), and the measurement control tower (4) is integrated with a floating stability controller (41), a winch (42) and a connecting cable (43); The floating stability controller (41) achieves module floating stability by adjusting the water level in the cabin unit (31).

3. The assembled gate bottom plate structure according to claim 2, characterized in that: The bottom of the casing module (3) is provided with a docking hole that matches the steel pipe pile (2).

4. The construction method of a prefabricated gate bottom plate structure according to claim 3, characterized in that: The top of the casing module (3) is provided with a cable guide (44) for guiding the connecting cable (43).

5. The assembled gate bottom plate structure according to claim 3, characterized in that: The number of the casing modules (3) is 17, the plane size is 80m×22.5m, and after the casing modules (3) are assembled, the span of the gate bottom plate is 400m; The number of the steel pipe piles (2) is 583, the diameter is 2540 mm, and the length is 45.5 m.

6. A construction method for an assembled gate bottom plate structure, characterized in that: The following steps are involved: Step S1, foundation trench dredging: excavating the foundation trench and leveling it to a preset elevation; Step S2, prefabrication of the gate bottom plate casing module (3); Step S3, transporting the gate bottom plate casing module (3); Step S4, installing the gate bottom plate casing; Step S5, concrete pouring; Step S6: backfilling.

7. The construction method of a prefabricated gate bottom plate structure according to claim 6, characterized in that: The step S3 includes: Step S31, determining the freeboard height of the housing module (3); Step S32, installing buoys (5) on both sides of the casing module (3), using the buoys (5) to assist the casing module (3) in floating, and setting the floating water level and the undocking water level according to the tide; Step S33, the tugboat (6) tows the container module (3) to the outfitting dock for mooring, and installs a measurement control tower (4) on the container module (3). The measurement control tower (4) is equipped with a floating stability controller (41), a winch (42) and a connecting cable (43). The floating stability controller (41) is used to adjust the water level in the cabin unit (31) to a stable state. Step S34: Float and tow the vessel to the construction site under the traction of the shore-based winch (42) and the ground anchor.

8. The construction method of a prefabricated gate bottom plate structure according to claim 7, characterized in that: The step S4 includes: Step S41, using the suction anchor block (7) to position the casing module (3); Step S42, using a crane vessel (8) to sink the vessel to overcome transcritical surface instability, and synchronously adjusting the water level of each cabin unit (31) through a floating stability controller (41); Step S43, measuring the relative position of the control tower (4) and the gate pier to control the elevation and plane position of the casing module (3); Step S44, opening the exhaust hole, so that the casing module (3) is placed on the top of the steel pipe pile (2).

9. The construction method of the assembled gate bottom plate structure according to claim 8, characterized in that: The step S5 includes: Step S51: After the gate bottom plate casing is installed in place, the diver connects the concrete pouring pipe underwater, opens the drainage hole, and pours the bottom concrete underwater. Step S52, after confirming that the cabin unit (31) is sealed, pouring underwater non-segregated concrete in separate compartments, and judging the pouring status based on the volume and the overflow of slurry from the drainage holes; Step S52: The cabin unit (31) is integrally formed by pouring concrete between the boxes using the conduit method.

10. The construction method of the assembled gate bottom plate structure according to claim 9, characterized in that: After the concrete construction of the gate bottom plate is completed, a backhoe dredger is used to backfill the over-excavated part of the foundation trench with gravel to the bottom elevation of the apron.

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