One-step forming method for valve well slot of ship lock water delivery system

Abstract

A one-step forming method for the gate groove of the maintenance valve well of a ship lock water supply system relates to the technical field of inland ship lock construction. It comprises: step 1, installation of the water-stop mechanism at the bottom sill of the maintenance valve well; step 2, installation of the embedded truss parts in the maintenance valve well; step 3, pouring high-slump secondary low-heat concrete at the bottom of the maintenance valve well; step 4, installation of the lintel water-stop mechanism in the maintenance valve well; step 5, installation of the built-in truss mechanism in the maintenance valve well; step 6, installation of the embedded parts of the gate groove of the maintenance valve well; step 7, pouring high-slump secondary low-heat concrete for the maintenance valve well and the main body of the gate; step 8, looping steps 5 to 7 until the concrete is poured to the designed top elevation of the gate. The present invention realizes the one-step forming of the gate groove of the maintenance valve well of the water supply system, solving the problems of narrow internal space of the maintenance valve well, great difficulty in second-phase concrete construction, and low construction efficiency.

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 working inspection valve well groove of a ship lock water delivery system. Background Art

[0002] In recent years, the continuous development of inland waterway transportation has increasingly highlighted its role in the integrated transportation system. With the vigorous development of inland waterway transportation projects nationwide, ship locks, as key infrastructure for inland waterway navigation, have also ushered in new development opportunities. In the sub-sector of inland ship lock project construction, to ensure the accuracy of the gate slots and the installation of embedded parts, the gate slots of the valve wells for water supply system maintenance are typically constructed in a two-phase method.

[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 door slot guide rail installation and fixation, 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 address the above-mentioned problems in the prior art and provide a one-step molding method for the working inspection valve well groove of the lock water delivery system.

[0005] To achieve the above objectives, the present invention adopts a technical solution: a one-step forming method for the gate slot of the maintenance valve well of the ship lock water supply system, characterized by using a built-in truss in the valve well as a reinforcement platform for the gate slot embedded parts to achieve one-step forming of the gate slot of the maintenance valve well of the water supply system, thus solving the problem of the narrow internal space of the maintenance valve well, the difficulty of the second phase concrete construction, and the low construction efficiency. The specific construction method includes the following steps:

[0006] Step 1: Install the water stop mechanism at the bottom sill of the working inspection valve well;

[0007] Step 2: Install the embedded truss parts in the working inspection valve well: The embedded truss parts include the positioning and reinforcement mechanism of the embedded truss;

[0008] Step 3: pouring high slump secondary low heat concrete at the bottom of the maintenance valve well;

[0009] Step 4: Install the lintel water stop mechanism in the working inspection valve well;

[0010] Step 5: Install the built-in truss mechanism in the working inspection valve well: The built-in truss is in the shape of a door as a whole and is a steel structure. It is connected to the pre-buried positioning and reinforcement steel plates by bolts, and the steel truss connecting rods are connected by bolts;

[0011] Step 6: Install the embedded parts of the gate groove of the working inspection valve well: The embedded parts of the gate groove include side rails, main rails and counter 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 counter rails are the up and down movement tracks of the gate;

[0012] Step 7: Pour high-slump, secondary, low-heat concrete for the maintenance valve well and the gate body;

[0013] Step 8: The formwork can only be removed after the concrete strength reaches the specified demolding strength; repeat steps 5 to 8 until the concrete is poured to the designed top elevation of the gate head.

[0014] The sill water-stop mechanism in step 1 is achieved by pre-embedding steel plates and SF6674 water-stop rubber in the concrete at the bottom of the working maintenance valve well, that is, at the bottom of the water supply corridor as the sill water-stop.

[0015] The positioning and reinforcement mechanism of the embedded truss in the step 2 is welded by 12mm thick Q355B steel plate, HW150*150*7*10 steel and 16mm diameter and 600mm long anchor bar. 50cm is reserved for pouring high slump secondary low-heat concrete, which is buried in the concrete at the bottom of the working maintenance valve well, so that the embedded steel plate surface is flush with the bottom surface of the water supply corridor, serving as the foundation of the built-in steel truss.

[0016] The lintel water-stop mechanism in step 4 is used as the lintel water-stop by pre-embedded steel structure and SF6674 water-stop rubber in the concrete at the top of the water delivery gallery.

[0017] The function of the built-in truss mechanism in step 5 is to serve as a support frame for the installation of the door groove embedded parts in step 6, thereby ensuring the installation accuracy of the door groove embedded parts and the door groove template.

[0018] In step 8, the height of the maintenance valve well is usually more than 20 meters deep, and the installation of embedded parts, template installation and concrete pouring need to be carried out layer by layer every three meters.

[0019] The present invention adopts the built-in truss in the valve well as the door groove embedded part reinforcement platform to realize the one-time forming of the valve well door groove of the water supply system working maintenance, solving the problems of narrow internal space of the maintenance valve well, difficult second-phase concrete construction and low construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional structural diagram of the maintenance valve well of the ship lock water delivery system of the present invention;

[0021] Figure 2 A three-dimensional structural diagram of the built-in truss of the maintenance valve well of the ship lock water delivery system of the present invention;

[0022] Figure 3 Top view and cross-sectional view of the built-in truss of the maintenance valve well of the ship lock water delivery system of the present invention (arrows indicate the direction of water flow);

[0023] Figure 4 Side view and cross-sectional view of the built-in truss of the maintenance valve well of the ship lock water delivery system of the present invention (arrows indicate the direction of water flow);

[0024] In the figure: working and maintenance valve well 1, sill water-stop mechanism 1-1, lintel water-stop mechanism 1-2, side rails 1-3, main rails 1-4, counter rails 1-5, water conveyance gallery 2, gate head side pier 3, gate head bottom plate 4, built-in truss 5, truss bottom embedded parts 5-1, truss vertical rods 5-2, truss horizontal rods 5-3, truss diagonal bracing rods 5-4. DETAILED DESCRIPTION

[0025] Example 1

[0026] like Figure 2-Figure 4 As shown, the one-step molding auxiliary system for the valve well gate groove of the ship lock water delivery system is shown, and the auxiliary system includes a built-in truss 5 located in the valve well 1 for service and maintenance, a water stop mechanism, and a gate groove embedded part located in the gate head side pier 3;

[0027] The built-in truss 5 includes a truss bottom embedded part 5-1, a truss vertical rod 5-2, a truss horizontal rod 5-3, and a truss diagonal bracing rod 5-4. The truss bottom embedded part 5-1 is used to connect the truss vertical rod 5-2. The truss vertical rod 5-2 is bolted to the truss horizontal rod 5-3. The truss horizontal rod 5-3 has a spacing of 1 to 2 meters per layer. The adjacent truss horizontal rods 5-3 are connected to the truss diagonal bracing rod 5-4.

[0028] The gate slot embedded parts include side rails 1-3, main rails 1-4, and counter rails 1-5. All three are embedded in the gate head side pier 3 and welded to the truss uprights 5-2 through steel gaskets. The side rails 1-3 are located between the main rails 1-4 and the counter rails 1-5. The side rails 1-3 are used to control the offset of the gate in the vertical direction of the water flow. The main rails 1-4 and the counter rails 1-5 are the up and down moving rails of the gate. The side rails 1-3 are 2500mm and 4500mm long respectively, and are made of H-shaped steel HW150*150*7*10, Q335 It is composed of B steel plate and anchor bars with a diameter of 16mm and a length of 600mm; the main rails 1-4 are 2500mm and 4500mm long respectively, and are composed of L140*90*10 angle steel, C20 channel steel, Q355B steel plate and anchor bars with a diameter of 16mm and a length of 600mm; the counter rails 1-5 are 2500mm and 3500mm long respectively, and are composed of H-shaped steel HW150*150*7*10, L100*100*10 angle steel, Q355B steel plate with a diameter of 16mm and anchor bars with a length of 600mm.

[0029] The waterstop mechanism includes a sill waterstop 1-1 and a lintel waterstop 1-2. Sill waterstop 1-1 is located below the water corridor 2 and connected to the end of the main rail 1-4. Lintel waterstop 1-2 is located above the water corridor 2 and welded to the main rail 1-4 at both ends. The sill waterstop is welded together with 12mm thick Q355B steel plate, HW150*150*7*10 steel, and 16mm diameter, 600mm long anchor bars, with the bottom end connected to SF6674 waterstop rubber. The lintel waterstop is welded together with 12mm thick Q355B steel plate, 16mm diameter, 600mm long anchor bars, with the bottom end connected to SF6674 waterstop rubber.

[0030] Example 2

[0031] A one-step forming method for the valve well slot of a ship lock water delivery system using the built-in truss 5 in Example 1. Figure 1 As shown, the maintenance valve well 1 is arranged in the gate head side pier 3, and the water delivery gallery 2 is arranged in the gate head bottom plate 4. The gate head bottom plate 4, the gate head side pier 3, the maintenance valve well 1, and the water delivery gallery 2 are an integral structure. The built-in truss 5 in the valve well is used as a gate slot embedded part reinforcement platform to achieve one-time molding of the maintenance valve well gate slot of the water delivery system. The specific construction method includes the following steps:

[0032] Step 1: Install the valve well sill water stop mechanism 1-1 during work inspection;

[0033] Step 2: Install the embedded parts 5-1 at the bottom of the truss in the valve well during work inspection: The embedded parts at the bottom of the truss include the positioning and reinforcement mechanism of the embedded truss;

[0034] Step 3: pouring high slump secondary low heat concrete at the bottom of the maintenance valve well;

[0035] Step 4: Install the lintel water stop mechanism 1-2 in the working inspection valve well;

[0036] Step 5: Install the built-in truss mechanism 5 in the working inspection valve well: The built-in truss is in the shape of a door as a whole and is a steel structure. It is connected to the pre-buried positioning and reinforcement steel plates by bolts, and the steel truss connecting rods are connected by bolts;

[0037] Step 6: Install the embedded parts of the valve well door groove for maintenance work;

[0038] Step 7: Pour high-slump, secondary, low-heat concrete for the maintenance valve well and the gate body;

[0039] Step 8: Wait until the concrete reaches the required strength for formwork removal before removing it. Be cautious when removing the formwork to avoid damaging the concrete surface. When removing the formwork, follow the principle of "rear supports removed first, front supports removed last" to separate the formwork from the concrete surface. Repeat Steps 5 through 8 until the concrete is poured to the designed top elevation of the gate head.

Claims

1. A one-step molding method for the valve well slot of a ship lock water delivery system, characterized by: The built-in truss in the valve well is used as the door slot embedded reinforcement platform to achieve one-time molding of the valve well door slot for maintenance of the water supply system. 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: Install the embedded truss parts in the maintenance valve well. The positioning and reinforcement mechanism of the embedded truss is welded together by 12mm thick Q355B steel plate, HW150*150*7*10 steel and 16mm diameter and 600mm long anchor bars. 50cm is reserved for pouring high-slump secondary low-heat concrete. The concrete is embedded in the concrete at the bottom of the maintenance valve well so that the embedded steel plate surface is flush with the bottom surface of the water transmission corridor, serving as the foundation of the built-in steel truss. Step 3: pouring high slump secondary low heat concrete at the bottom of the maintenance valve well; Step 4: Install the lintel water-stop mechanism in the maintenance valve well. The lintel water-stop mechanism uses a pre-embedded steel structure and SF6674 water-stop rubber in the concrete at the top of the water corridor as the lintel water-stop. The steel structure is composed of steel plates welded with anchor bars, and the lintel is welded to the main track. Step 5: Install the built-in truss mechanism in the service inspection valve well: The built-in truss mechanism is in the shape of a door as a whole and is a steel structure. It is connected to the pre-buried positioning and reinforcement steel plates by bolts, and the steel truss connecting rods are connected by bolts; Step 6: Install the embedded parts of the gate groove of the working inspection valve well; the gate groove embedded parts include side rails, main rails and counter rails. The side rails are used to control the displacement of the gate in the direction perpendicular to the water flow. The main rails and counter rails are the up and down movement tracks of the gate. The side rails, main rails and counter rails are welded to the truss uprights through steel gaskets to form a whole; Step 7: Pour high-slump, secondary, low-heat concrete for the maintenance valve well and the gate body; Step 8: The concrete can be removed only after its strength reaches the specified demolding strength; repeat steps 5 to 8 until the concrete is poured to the designed top elevation of the gate head; the depth of the working maintenance valve well is greater than 20 meters, and the installation of embedded parts, template installation and concrete pouring are carried out in layers every three meters.

2. The one-step forming method for the valve well slot of the ship lock water delivery system according to claim 1 is characterized in that: The sill water-stop mechanism in step 1 is achieved by pre-embedding steel plates and SF6674 water-stop rubber in the concrete at the bottom of the working maintenance valve well, that is, at the bottom of the water supply corridor as the sill water-stop.

3. The one-step forming method for the valve well slot of the ship lock water delivery system according to claim 1 is characterized in that: In step 7, the template is fixed to the built-in truss by means of the tension rod.

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