One-time forming method for work overhaul valve well door groove of ship lock water conveying system

Abstract

The invention discloses a ship lock water delivery system work overhaul valve well gate groove one-time forming method, and relates to the technical field of inland river ship lock construction. Comprising the following steps: step 1, mounting a working overhaul valve well bottom sill water stop mechanism; step 2, installing a built-in truss embedded part in the work overhaul valve well; 3, well bottom high-slump second-grade low-heat concrete pouring of the work overhaul valve is carried out; 4, a lintel water stop mechanism in the work overhaul valve well is installed; 5, a truss mechanism is installed in the work overhaul valve well; 6, a door groove embedded part of the work overhaul valve well is installed; 7, high-slump second-level low-heat concrete pouring is conducted on the work overhaul valve well and the lock head body; and 8, the step 5 to the step 7 are cycled until the concrete is poured to the designed crest elevation of the lock head. According to the invention, one-step forming of the work overhaul valve well gate groove of the water delivery system is realized, and the problems of narrow internal space of the overhaul valve well, high secondary concrete construction difficulty and low construction efficiency are solved.

Description

Technical Field

[0001] The invention relates to the technical field of inland river ship lock construction, and in particular to a one-step forming method for a valve well gate groove of a ship lock water delivery system. Background Art

[0002] In recent years, with the continuous development of inland water transport, its position in the comprehensive transportation system has become increasingly prominent. With the vigorous development of inland water transport projects across the country, ship locks, as key infrastructure for inland water transport, have also ushered in new development opportunities. In the subdivision of inland ship lock project construction, in order to ensure the accuracy of the gate slot and installation of embedded parts, the gate slot of the valve well of the water delivery system is usually constructed in two phases.

[0003] With the continuous improvement of construction standards, although the second-phase method is a common construction method, it also has major disadvantages: First, the construction period is long. The second-phase concrete pouring needs to be carried out after the first-phase project is completed and reaches a certain strength. For engineering projects that need to be put into use quickly, this construction method may extend the construction period and affect the overall progress of the project; second, the construction is difficult. The second-phase concrete pouring has high requirements for construction technology, especially in the door slot. Due to the small space and high construction difficulty, quality problems are prone to occur, such as loose concrete and many bubbles. These problems may affect the durability and stability of the door slot; third, the impact on the installation accuracy of embedded parts. During the second-phase concrete pouring process, embedded parts such as guide rail foundation bolts need to be installed and fixed. However, due to the pouring deformation and vibration of the second-phase concrete, the installation accuracy of the embedded parts may be affected, resulting in the position of the embedded parts being offset or loose, which may affect the subsequent installation and fixing of the door slot guide rails, and thus affect the normal operation of the entire water supply system. Summary of the invention

[0004] The purpose of the present invention is to provide a one-time forming method for a valve well gate groove of a ship lock water delivery system for the above-mentioned problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a one-time forming method for the gate groove of the valve well for the maintenance of the ship lock water delivery system, characterized in that: a built-in truss in the valve well is used as a gate groove embedded part reinforcement platform to achieve one-time forming of the gate groove of the valve well for the maintenance of the water delivery system, solving the problem of narrow internal space of the maintenance valve well, great difficulty in second-phase concrete construction, and low construction efficiency. The specific construction method includes the following steps: Step 1: Install the water stop mechanism at the bottom sill of the working inspection valve well; Step 2: Installation of embedded truss parts in the working inspection valve well: The embedded truss parts include positioning and reinforcement mechanisms for the embedded trusses; Step 3: pouring high slump secondary low heat concrete at the bottom of the working valve well; Step 4: Install the lintel water stop mechanism inside the working and maintenance valve well; Step 5: Install the built-in truss mechanism inside the working and maintenance valve well: The overall shape of the built-in truss is gate-shaped and made of steel structure. It is connected to the embedded positioning and reinforcement steel plates by bolts, and the connecting members of the steel truss are connected by bolts; Step 6: Install the gate slot embedded parts of the working and maintenance valve well: The gate slot embedded parts include side rails, main rails and anti-rails. The side rails are used to control the offset of the gate in the direction perpendicular to the water flow, and the main rails and anti-rails are the up and down moving tracks of the gate; Step 7: Pour high-slump secondary aggregate low-heat concrete for the working and maintenance valve well and the main body of the lock head; Step 8: It can only be removed after the concrete strength reaches the specified formwork removal strength; Repeat steps 5 to 8 until the concrete is poured to the design top elevation of the lock head.

[0006] The bottom sill water stop mechanism in step 1 uses embedded steel plates and SF6674 water stop rubber in the concrete at the bottom of the working and maintenance valve well, that is, at the bottom of the water conveyance corridor, as the bottom sill water stop.

[0007] The positioning and reinforcement mechanism of the embedded truss in step 2 is welded and connected by a 12-mm-thick Q355B steel plate, HW150*150*7*10 section steel and anchor bars with a diameter of 16 mm and a length of 600 mm. Leave 50 cm for pouring high-slump secondary aggregate low-heat concrete, and embed it in the concrete at the bottom of the working and maintenance valve well to make the surface of the embedded steel plate flush with the bottom surface of the water conveyance corridor, serving as the foundation for the built-in steel truss.

[0008] The lintel water stop mechanism in step 4 uses embedded steel structures and SF6674 water stop rubber in the concrete at the top of the water conveyance corridor as the lintel water stop.

[0009] The function of the built-in truss mechanism in step 5: It serves as the support frame for the installation of the gate slot embedded parts in step 6 to ensure the installation accuracy of the gate slot embedded parts and the gate slot formwork.

[0010] In step 8, the height of the working and maintenance valve well usually reaches more than twenty meters deep, and the installation of embedded parts, formwork installation and concrete pouring need to be carried out in layers every three meters.

[0011] The present invention uses the built-in truss inside the valve well as the reinforcement platform for the gate slot embedded parts, realizing the one-time forming of the gate slot of the working and maintenance valve well of the water conveyance system, and solving the problems of narrow internal space of the maintenance valve well, difficult secondary concrete construction and low construction efficiency. Description of the Drawings

[0012] Figure 1 Three-dimensional structure diagram of the working and maintenance valve well of the ship lock water conveyance system of the present invention; Figure 2Three-dimensional structure diagram of the built-in truss in the working and maintenance valve well of the ship lock water conveyance system of the present invention; Figure 3 Top view and cross-sectional view of the built-in truss in the working and maintenance valve well of the ship lock water conveyance system of the present invention (the arrow indicates the water flow direction); Figure 4 Side view and cross-sectional view of the built-in truss in the working and maintenance valve well of the ship lock water conveyance system of the present invention (the arrow indicates the water flow direction); In the figure: working and maintenance valve well 1, bottom sill water stop mechanism 1-1, lintel water stop mechanism 1-2, side rail 1-3, main rail 1-4, reverse rail 1-5, water conveyance corridor 2, lock head side pier 3, lock head bottom slab 4, built-in truss 5, truss bottom embedded part 5-1, truss vertical rod 5-2, truss horizontal member 5-3, truss diagonal brace member 5-4. Specific implementation mode

[0013] Embodiment 1

[0014] As Figures 2 - 4 shown, the auxiliary system for one-time forming of the gate slot in the working and maintenance valve well of the ship lock water conveyance system, the auxiliary system includes a built-in truss 5 located in the working and maintenance valve well 1, a water stop mechanism, and a gate slot embedded part located in the lock head side pier 3; The built-in truss 5 includes a truss bottom embedded part 5-1, truss vertical rods 5-2, truss horizontal members 5-3, and truss diagonal brace members 5-4. The function of the truss bottom embedded part 5-1 is to connect the truss vertical rods 5-2. The truss vertical rods 5-2 are bolted to the truss horizontal members 5-3. The truss horizontal members 5-3 have a spacing of 1-2 m between each layer, and truss diagonal brace members 5-4 are connected between adjacent truss horizontal members 5-3; The gate slot embedded part includes a side rail 1-3, a main rail 1-4, and a reverse rail 1-5. All three are embedded in the lock head side pier 3 and are welded into a whole with the truss vertical rods 5-2 through steel washers. The side rail 1-3 is located between the main rail 1-4 and the reverse rail 1-5. The side rail 1-3 is used to control the offset of the gate in the direction perpendicular to the water flow. The main rail 1-4 and the reverse rail 1-5 are the upper and lower moving tracks of the gate. The single length of the side rail 1-3 is 2500 mm and 4500 mm respectively, and it is composed of H-shaped steel HW150*150*7*10, Q335B steel plate, and anchor bars with a diameter of 16 mm and a length of 600 mm; the single length of the main rail 1-4 is 2500 mm and 4500 mm respectively, and it is composed of L140*90*10 angle steel, C20 channel steel, Q355B steel plate, and anchor bars with a diameter of 16 mm and a length of 600 mm; the single length of the reverse rail 1-5 is 2500 mm and 3500 mm respectively, and it is composed of H-shaped steel HW150*150*7*10, L100*100*10 angle steel, Q355B steel plate, and anchor bars with a diameter of 16 mm and a length of 600 mm.

[0015] The water stop mechanism includes a sill water stop mechanism 1-1 and a lintel water stop mechanism 1-2. The sill water stop mechanism 1-1 is located below the water conveyance corridor 2 and is connected to the end of the main rail 1-4. The lintel water stop mechanism 1-2 is located above the water conveyance corridor 2, and both ends are welded to the main rail 1-4. The sill water stop mechanism is welded and connected by a Q355B steel plate with a thickness of 12 mm, an HW150*150*7*10 section steel, and anchor bars with a diameter of 16 mm and a length of 600 mm. The bottom end is connected to the SF6674 water stop rubber. The lintel water stop mechanism is welded and connected by a Q355B steel plate with a thickness of 12 mm and anchor bars with a diameter of 16 mm and a length of 600 mm. The bottom end is connected to the SF6674 water stop rubber.

[0016] Embodiment 2

[0017] Adopt a method for one-time forming of the gate slot of the working and maintenance valve well of a ship lock water conveyance system with the built-in truss 5 in Embodiment 1. The working conditions are as Figure 1 shown. The working and maintenance valve well 1 is arranged in the side pier 3 of the lock head. The water conveyance corridor 2 is arranged in the bottom slab 4 of the lock head. The bottom slab 4 of the lock head, the side pier 3 of the lock head, the working and maintenance valve well 1, and the water conveyance corridor 2 are of an integral structure. The built-in truss 5 in the valve well is used as the reinforcement platform for the gate slot embedded parts to realize the one-time forming of the gate slot of the working and maintenance valve well of the water conveyance system. The specific construction method includes the following steps: Step 1: Install the sill water stop mechanism 1-1 of the working and maintenance valve well. Step 2: Install the bottom embedded parts 5-1 of the truss in the working and maintenance valve well: The bottom embedded parts of the truss include the positioning and reinforcement mechanism of the embedded truss. Step 3: Pour high-slump second-grade aggregate low-heat concrete at the bottom of the working and maintenance valve well. Step 4: Install the lintel water stop mechanism 1-2 in the working and maintenance valve well. Step 5: Install the built-in truss mechanism 5 in the working and maintenance valve well: The built-in truss is integrally in the shape of a door and is made of section steel. It is connected to the embedded positioning and reinforcement steel plates by bolts, and the steel truss connecting members are connected by bolts. Step 6: Install the gate slot embedded parts of the working and maintenance valve well. Step 7: Pour high-slump second-grade aggregate low-heat concrete for the working and maintenance valve well and the main body of the lock head. Step 8: It can be demolished only after the concrete strength reaches the specified formwork removal strength. The formwork removal should be carried out carefully to avoid damaging the concrete surface. When removing the formwork, follow the principle of "removing the later-supported formwork first and the earlier-supported formwork later" to separate the formwork from the concrete surface; Repeat steps 5 to 8 until the concrete is poured to the designed top elevation of the lock head.

Claims

1. A method for one-time forming of the miter gate slot of the lock filling and emptying system, characterized in that: Use the built-in truss in the valve well as the reinforcement platform for the gate slot embedment, and realize the one-time forming of the gate slot of the working and maintenance valve well of the water conveyance system. The specific construction method includes the following steps: Step 1: Install the bottom sill water stop mechanism of the working and maintenance valve well; Step 2: Install the built-in truss embedment in the working and maintenance valve well; The positioning and reinforcement mechanism of the embedded truss is welded and connected by a Q355B steel plate with a thickness of 12 mm, an HW150*150*7*10 section steel, and anchor bars with a diameter of 16 mm and a length of 600 mm. Reserve 50 cm for pouring high-slump second-grade aggregate low-heat concrete, and embed it in the bottom concrete of the working and maintenance valve well to make the surface of the embedded steel plate flush with the bottom surface of the water conveyance corridor, serving as the foundation for the built-in steel truss; Step 3: Pour high-slump second-grade aggregate low-heat concrete at the bottom of the working and maintenance valve well; Step 4: Install the lintel water stop mechanism in the working and maintenance valve well; The lintel water stop mechanism uses the embedded steel structure and SF6674 water stop rubber in the top concrete of the water conveyance corridor as the lintel water stop. The steel structure is composed of a steel plate welded with anchor bars, and the lintel is welded to the main track; Step 5: Install the built-in truss mechanism in the working and maintenance valve well: The built-in truss mechanism is integrally in the shape of a door and is made of section steel. It is connected to the embedded positioning and reinforcement steel plate by bolts, and the connecting members of the steel truss are connected by bolts; Step 6: Install the gate slot embedment of the working and maintenance valve well; The gate slot embedment includes side rails, main rails, and anti-rails. The side rails are used to control the offset of the gate in the direction perpendicular to the water flow. The main rails and anti-rails are the up and down moving tracks of the gate. The side rails, main rails, and anti-rails are welded into a whole with the truss vertical poles through steel washers; Step 7: Pour high-slump second-grade aggregate low-heat concrete for the working and maintenance valve well and the main body of the lock head; Step 8: It can be demolished only after the concrete strength reaches the specified formwork removal strength; Repeat steps 5 to 8 until the concrete is poured to the designed top elevation of the lock head; The depth of the working and maintenance valve well is greater than 20 meters, and the installation of the embedment, formwork installation, and concrete pouring are carried out in 3-meter layers.

2. The method for one-time forming of the miter gate slot of the lock filling and emptying system according to claim 1, characterized in that The bottom sill water stop mechanism in step 1 uses the embedded steel plate and SF6674 water stop rubber in the bottom of the working and maintenance valve well, that is, the bottom concrete of the water conveyance corridor, as the bottom sill water stop.

3. The method for one-time forming of the miter gate slot of the lock filling and emptying system according to claim 1, characterized in that In step 7, the formwork is fixed on the built-in truss through tie rods.

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