Construction method of water diversion installation based on semicircular steel plate pressure cofferdam without water conservancy

Abstract

The present application relates to a construction method for installing a water diversion port without stopping water on a semicircular steel plate pressure cofferdam, which includes the following steps: S1, marking: marking the outer wall of the side wall of an existing water storage building where the water diversion port needs to be constructed, away from the water-facing surface, and performing strength testing on the side wall of the existing water storage building. After the strength reaches a preset value, proceed to step S2; S2, installation of the construction platform; S3, installation; S4, cutting the water diversion port: after the installation of the cofferdam steel plate is completed, the water on the inner side of the cofferdam steel plate is pumped out, and then the water diversion port is cut by static cutting. After the water diversion port is cut and the concrete waste generated by the construction is cleaned up, the construction platform is slid to the next water diversion port marking point of the water storage building and steps S3 and S4 are repeated; if there is no water diversion port cutting, the construction platform is slid to the side of the construction channel to dismantle the construction platform. The present application is relatively convenient for opening a water diversion port on the side wall of an existing water storage building.

Description

Technical Field

[0001] The present application relates to the field of small cofferdam construction technology, and in particular to a construction method for installing a water diversion outlet based on a semicircular arc steel plate pressure cofferdam without stopping water. Background Art

[0002] During the operation of water storage buildings such as pumping stations, water plants, and channels, when the water in existing buildings needs to be diverted or expanded according to the design requirements of later projects, it is often necessary to open water diversion outlets on the water flow structures of existing pumping stations, water plants, and channels and other water storage structures to meet the needs of later projects.

[0003] However, because the existing buildings involved are water conservancy facilities such as pumping stations, water plants or channels, it is not convenient to stop water supply during the construction of the water diversion outlets. At the same time, it is also necessary to minimize water pollution to reduce the impact on normal use needs, such as irrigation and daily water use.

[0004] Therefore, the patent with the authorization publication number CN111663548A in the prior art discloses a construction method for a cofferdam structure for construction without water stopping and a construction method for installing and removing the cofferdam without water stopping, and its technical points are: it includes a cofferdam structure with an open upper end, the cofferdam structure is a cofferdam box beam with an upper opening and a side opening structure, and the side wall of the cofferdam structure is an arc-shaped plate structure; the side opening edge of the cofferdam structure is in contact with the surface of the side wall of the water storage structure, and the side opening edge of the cofferdam mechanism is circumferentially provided with a water stop strip, the water stop strip is used to press the side wall of the water storage structure and seal the side opening edge of the cofferdam structure; the side opening edge of the cofferdam structure is provided with a hydraulic cylinder, and the telescopic rod of the hydraulic cylinder is hinged to the side opening edge of the cofferdam structure; the cylinder body of the hydraulic cylinder is connected to the bottom wall of the water storage structure through a hinged anti-slip seat, so as to abut the cofferdam structure against the inner wall of the water storage structure.

[0005] In the actual construction process, since the cofferdam structure is made of steel structure as a whole, it is often necessary to use hoisting during installation. However, when the water diversion outlets on some water storage buildings are relatively far from the construction channel or it is inconvenient to park the hoisting equipment around the water storage buildings, due to the narrow side walls of the water storage buildings, the construction equipment can only be hoisted to the side of the water storage building by hoisting equipment, and then transferred to the construction location of the water diversion outlet in turn. The complicated transportation and installation process will prolong the construction period, which will not only affect the efficiency of the construction, but also increase the possibility of water pollution in the water storage building. Summary of the invention

[0006] In order to relatively conveniently open a water diversion outlet on the side wall of an existing water storage building, the present application provides a construction method for installing a water diversion outlet based on a semicircular arc steel plate pressure cofferdam without stopping water.

[0007] The present application provides a construction method for installing a water diversion outlet without stopping water flow based on a semi-circular steel plate pressure cofferdam, which adopts the following technical solution: A construction method for installing a water diversion outlet without stopping water flow based on a semi-circular steel plate pressure cofferdam, comprising the following steps: S1. Marking: Mark the outer wall of the side wall of an existing water storage building away from the water facing surface at the location where the water diversion outlet is to be constructed, and perform a strength test on the side wall of the existing water storage building. After the strength reaches a preset value, proceed to step S2.

[0008] S2. Installation of construction platform: Assemble the construction platform at the connection position between the existing water storage building and the construction channel, and slide the construction platform to connect it to the side wall of the water storage building.

[0009] S3. Installation: Place the cofferdam steel plate on the construction platform, then slide the construction platform to the corresponding marking point, and then surround the cofferdam steel plate at the marking point. The cofferdam steel plate is a box-shaped structure with upper and side openings, and the cofferdam steel plate is hoisted to the side wall of the water storage building through the construction platform and sealed. The side wall of the cofferdam steel plate is a semicircular plate structure.

[0010] S4, cutting the water diversion outlet: after the installation of the cofferdam steel plate is completed, the water inside the cofferdam steel plate is pumped out, and then the water diversion outlet is cut by static cutting. After the water diversion outlet is cut and the concrete waste generated by the construction is cleaned up, the construction platform is slid to the next water diversion outlet marking point of the water storage building and steps S3 and S4 are repeated; if there is no water diversion outlet cutting, the construction platform is slid to the side of the construction channel and the construction platform is dismantled.

[0011] The construction platform includes a construction support, a plurality of support sliding members and a plurality of lateral support mechanisms, wherein the plurality of lateral support mechanisms are divided into two groups, wherein the support sliding member is hinged to the construction support and is located between the two groups of lateral support mechanisms, wherein the support sliding member is used to slidably connect the construction support to the edge of the top of the side wall of the water storage building, wherein the lateral support mechanism includes a lateral support member and a lateral sliding member, wherein the lateral support member is hinged to the construction support and the lateral support member is used to abut the side wall of the water storage building, wherein the lateral sliding member is hinged to the construction support and is used to slidably connect the construction support to the side wall of the water storage building.

[0012] By adopting the above technical scheme, during the construction of the water diversion outlet, the cofferdam steel plate is transferred to the water diversion outlet marking point by sliding the construction support set on the side wall of the water storage building, and then the cofferdam steel plate is installed and positioned by the construction support. Compared with the transportation and then assembly, the construction efficiency can be effectively optimized; at the same time, during the transportation process, the construction support can be guided by the lateral sliding member and the construction support can be transferred and supported by the supporting sliding member, and after the construction support slides to the water diversion outlet, the outer wall of the water storage building can be abutted by the lateral support member to fix the construction support, and the lateral sliding member and the lateral support member are coordinated to make the construction support stably slide and form a construction platform, and compared with setting a hydraulic cylinder to fix the cofferdam steel plate on the bottom wall of the water storage building, the structural damage to the existing water storage building can be further reduced; since there is no need to construct inside the water storage building, the water in the water storage building and the marking point of the water diversion outlet can be isolated by the cofferdam steel plate, so as to achieve the construction of the cofferdam steel plate without stopping water and reduce the damage to the water storage building caused by the installation of the cofferdam steel plate.

[0013] Optionally, the lateral support member includes a lateral support arm hinged to the construction support and a lateral support hydraulic cylinder hinged to the construction support, and the telescopic end of the lateral support hydraulic cylinder is hinged to the lateral support arm.

[0014] By adopting the above technical solution, when the construction support needs to be fixed, the lateral support hydraulic cylinder only needs to drive the lateral support arm to abut against the side wall of the water storage building, so that the two groups of lateral support arms can abut against the opposite side walls of the water storage building to achieve the fixation of the construction support; compared with the use of anchor rods for fixation, it can effectively reduce the structural damage to the side wall of the water storage building, thereby reducing the impact on the existing buildings and fixing the construction support to form a construction platform for installing the cofferdam steel plate.

[0015] Optionally, the lateral support arm includes a support arm body hinged to the construction support and a pad hinged to the outer wall of the support arm body on a side facing the supporting sliding member.

[0016] By adopting the above technical solution, the cushion block can make the rotation center of the support arm body and the position where the cushion block abuts against the side wall of the water storage building eccentrically arranged, thereby reducing the possibility of interference between the support arm body and the side wall of the water storage building when adapting to different side walls of the water storage building, thereby reducing the possibility of interference between the support arm body and the side wall of the water storage building when the thickness and angle of the side walls of different water storage buildings are different.

[0017] Optionally, the lateral support arm is provided with a plurality of sliding holes distributed along the length direction of the lateral support arm, the inner wall of the sliding hole is a stepped shaft-like structure and the small end faces one side of the supporting sliding member, the sliding hole is slidingly provided with an abutment column with a stepped shaft-like structure, and the large end of the abutment column is adapted and slidably connected to the hole wall of the sliding hole, the small end of the abutment column extends out of the small end of the sliding hole and is used to abut the side wall of the water storage building, and the construction platform is provided with a control component for controlling the extension and sliding locking of the plurality of abutment columns.

[0018] By adopting the above technical scheme, when the construction support is installed on the side wall of the water storage building, due to the different thicknesses and angles of the side walls of different water storage buildings, the lateral support arm can only partially abut against the side wall of the water storage building. During the construction process, it is easy to damage the side wall of the water storage building. Since the support arm body is hinged to the construction support, the support arm body itself tends to rotate, resulting in relatively poor stability of the construction support during construction. At this time, the control component is used to make the lengths of the multiple abutment columns extending out of the sliding holes different, so that the multiple abutment columns can abut against the side wall of the water storage building, which can effectively increase the force-bearing area of ​​the side wall of the water storage building, and can also abut against the side wall of the water storage building through multiple abutment columns, cooperate with the lateral support hydraulic cylinder to limit the rotation of the support arm body, thereby further optimizing the stability of the construction support when it is fixed, and reducing the possibility of damage to the water storage building.

[0019] Optionally, the control assembly includes an oil pump, a control pipe and a cutting piece arranged on the lateral support arm, the control pipe includes an oil pipe and a plurality of connecting oil pipes, one end of the connecting oil pipe is connected to the oil pipe, the other end of the connecting oil pipe is connected to a cavity on the side of the sliding hole away from the small end of the abutment column, the end of the oil pipe away from the connecting oil pipe is connected to the output end of the oil pump through a three-way valve, the three-way valve can connect the output port of the oil pipe to the oil tank, the input end of the oil pump is connected to the oil tank through a pipeline, and the cutting piece is used to simultaneously cut off or connect the connecting oil pipes.

[0020] By adopting the above technical scheme, when it is necessary to abut a plurality of abutment columns against the side wall of a water storage building, it is only necessary to start the oil pump, input the oil in the oil tank into a plurality of connecting oil pipes through the oil pipe, and simultaneously push a plurality of abutment columns out of the sliding holes. After some of the abutment columns abut against the side wall of the water storage building, the oil in the oil tank is input into the sliding holes that are not abutted against the side wall of the water storage building through the oil pump, etc., so that in this process, a plurality of abutment columns can adapt to the side wall contour and thickness of the water storage building while abutting against the side wall of the water storage building, so that they can adapt to the thickness and angle of the side walls of different water storage buildings; thereafter, the oil input of the connecting oil pipe is cut off by the cutting piece, so as to realize the sliding locking of the abutment columns; compared with the abutment using a plurality of electric push cylinders or hydraulic cylinders arranged on the lateral support arms, there is no need to additionally control the extension lengths of the telescopic ends of different hydraulic cylinders or electric push cylinders, and the thickness and angle of the side walls of the water storage building can be adaptively adapted.

[0021] Optionally, the cutting member includes a cutting valve controlled by rotation, a cutting gear coaxially fixed to the control end of the cutting valve, and a cutting rack meshed with multiple cutting gears, the cutting rack is slidably connected to the lateral support arm, one end of the cutting rack is rod-shaped and is covered with a cutting control ring, the cutting control ring is threadedly connected to the cutting rack and rotatably connected to the lateral support arm, and the cutting control ring is rotatably connected to the lateral support arm.

[0022] By adopting the above technical solution, when it is necessary to control the connection or closure of the connecting oil pipeline, it is only necessary to rotate the cut-off control ring to make the cut-off rack slide, and the sliding cut-off rack drives multiple cut-off gears to rotate, so that the control ends of multiple cut-off valves can be rotated at the same time to control the cut-off valves to make the connecting oil pipeline connected or closed.

[0023] Optionally, the outer ring edge of the cutting control ring is a gear ring structure, and the outer ring of the cutting control ring is meshed with a driving gear, the lateral support arm is fixedly connected to a cutting motor, and the output shaft of the cutting motor is coaxially fixedly connected to the driving gear.

[0024] By adopting the above technical solution, when it is necessary to control the sliding of the cutting rack to control the simultaneous closure or connection of multiple connecting oil pipes, the cutting motor only needs to drive the cutting control ring to rotate through the driving gear to cause the cutting rack to slide.

[0025] Optionally, the small end ball of the abutment column is hinged with an abutment plate.

[0026] By adopting the above technical solution, since the lateral support arm will swing along with the lateral support hydraulic cylinder, the abutment column will be offset at an angle relative to the side wall of the water storage building. The abutment plate can further adapt to the angle of the lateral support arm to further increase the stability of the support and reduce the possibility of damage to the side wall of the water storage building.

[0027] Optionally, the lateral sliding member includes a lateral sliding arm hinged to a construction support, a sliding roller for abutting against a side wall of a water storage building, and a lateral hydraulic cylinder for controlling the rotation of the lateral sliding arm, the sliding roller is rotatably connected to the lateral sliding arm, and the cylinder body and telescopic end of the lateral hydraulic cylinder are respectively hinged to the lateral sliding arm and the construction support.

[0028] By adopting the above technical solution, when sliding is required, only the lateral hydraulic cylinder needs to control the rotation of the lateral sliding arm, so that the sliding roller is rolled and connected to the side wall of the water storage building, realizing the lateral support of the construction support, and making the construction support relatively stable to slide to the marking point of the water diversion port. When there are reinforcing ribs in some water storage buildings that hinder the sliding roller, at this time, only a plurality of lateral hydraulic cylinders need to control a plurality of lateral sliding arms in turn to drive the sliding roller to abut or detach from the water storage building, that is, the sliding rollers of some of the lateral sliding arms are rolled and connected to the water storage building, and then the remaining lateral sliding arms facing the side of the reinforcing rib of the water storage building are detached from the water storage building and slide through the reinforcing rib of the water storage building, and then the lateral sliding arm passing through the reinforcing rib drives the sliding roller to roll and connect to the side wall of the water storage building, thereby realizing step-by-step passing through the reinforcing rib of the water storage building, so as to effectively optimize the passability of the construction platform.

[0029] Optionally, the construction support includes at least two support units, two adjacent support units are hinged to each other, and the lateral support members and lateral sliding members are hinged to the support units, the support sliding members are fixedly connected to the support units, and two adjacent support units are fixedly connected via a fixing member.

[0030] By adopting the above technical solution, since the side walls of some water storage buildings have a certain curvature, the curvature of the side walls of the water storage buildings can be adapted to during the sliding process through relative swinging between at least two bracket units, thereby reducing the possibility of being unable to transport the water storage building due to the curvature of the side walls. At the same time, when fixing, two adjacent bracket units are fixed by fixing parts to form a relatively stable construction platform.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] During the construction of the water diversion outlet, the cofferdam steel plate is transferred to the water diversion outlet marking point by sliding the construction bracket set on the side wall of the water storage building, and then the cofferdam steel plate is installed and positioned by the construction bracket. Compared with transporting first and then assembling, the construction efficiency can be effectively optimized; at the same time, during the transportation process, the construction bracket can be guided by the lateral sliding member and the sliding roller of the supporting sliding member can be abutted against the side wall of the water storage building to transport and support the construction bracket, and after the construction bracket slides to the water diversion outlet, the lateral support member can be abutted against the side wall of the water storage building. The outer wall is used to fix the construction support. Through the coordinated cooperation of the lateral sliding parts and the lateral supporting parts, the construction support can slide stably and form a construction platform. Compared with setting a hydraulic cylinder to fix the cofferdam steel plate on the bottom wall of the water storage building, the structural damage to the existing water storage building can be further reduced. Since there is no need to construct inside the water storage building, the cofferdam steel plate can be used to isolate the water in the water storage building and the marking point of the water diversion outlet, so as to achieve the construction of the cofferdam steel plate without stopping the water supply, while reducing the damage to the water storage building caused by the installation of the cofferdam steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a flowchart of the construction method of the embodiment.

[0034] Figure 2 It is a schematic diagram of the structure in which a construction platform is installed on the side wall of a water storage building in an embodiment of the present application.

[0035] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A.

[0036] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure of part B.

[0037] Figure 5 yes Figure 2 Schematic diagram of the cross-sectional structure along the CC line.

[0038] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of part D.

[0039] Figure 7 yes Figure 2 Schematic diagram of the enlarged structure of part E in the middle.

[0040] Description of reference numerals: 1. Cofferdam steel plate; 11. Mounting plate; 2. Construction support; 21. Support unit; 211. Construction opening; 22. Fixing piece; 221. Fixing screw; 222. Fixing screw; 223. Connecting plate; 224. Connecting hole; 23. Stand; 24. Electric hoist; 25. Installing hydraulic cylinder; 251. Connecting flange seat; 3. Support sliding piece; 4. Lateral support mechanism; 41. Lateral support piece; 411. Lateral support arm; 412. Lateral support hydraulic cylinder; 413. Support arm body; 414. Pad; 415. sliding hole; 42. lateral sliding member; 421. lateral sliding arm; 422. sliding roller; 423. lateral hydraulic cylinder; 43. abutment column; 431. abutment plate; 432. abutment spring; 5. control assembly; 51. oil pump; 52. control pipe; 521. oil pipeline; 522. connecting oil pipe; 523. three-way valve; 524. oil tank; 53. cutting member; 531. cutting valve; 532. cutting gear; 533. cutting rack; 534. cutting control ring; 535. driving gear; 54. cutting motor. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-7 This application is described in further detail.

[0042] The present application embodiment discloses a construction method for installing a water diversion outlet without stopping water based on a semicircular arc steel plate pressure cofferdam. Figure 1 and Figure 2 The construction method of installing the water diversion outlet without stopping water based on the semicircular arc steel plate pressure cofferdam includes the following steps:

[0043] S1, marking: marking the outer wall of the existing water storage building side away from the water-facing surface where the water diversion port is to be constructed, and performing strength testing on the existing water storage building side wall. After the strength of the water storage building side wall meets the preset value, proceed to step S2. The preset value is the strength required for construction, so as to reduce the possibility of structural damage to the water storage building side wall during construction.

[0044] S2. Installation of construction platform: Assemble the construction platform at the connection between the existing water storage building and the construction channel, and slide the construction platform to the side wall of the water storage building, so as to slide the construction platform through the side wall of the water storage building to the marked point for cutting the water diversion outlet.

[0045] S3, installation: place the cofferdam steel plate on the construction platform, then slide the construction platform to the corresponding marking point, then surround the cofferdam steel plate 1 at the marking point, and fix the cofferdam steel plate 1 to the side wall of the water storage building through the construction platform.

[0046] The cofferdam steel plate 1 is a box-shaped structure with upper and side openings, and is hoisted to the side wall of the water storage building through a construction platform and sealed, and the side wall of the cofferdam steel plate 1 is a semicircular plate-shaped structure.

[0047] Specifically, the side opening edge of the cofferdam steel plate 1 is folded outward to form a mounting plate 11, and then a self-adhesive waterproof strip is pasted on the plate surface of the mounting plate 11 facing the side wall of the water storage building for sealing. The self-adhesive waterproof strip is preferably a water-swellable waterproof strip.

[0048] S4, cutting the water diversion outlet: after the installation of the cofferdam steel plate 1 is completed, the water inside the cofferdam steel plate 1 is pumped out, and then the water diversion outlet is cut by static cutting. After the water diversion outlet is cut and the concrete waste generated by the construction is cleaned up, the construction platform is slid to the next water diversion outlet marking point of the water storage building and steps S3 and S4 are repeated; if there is no water diversion outlet cutting, the construction platform is slid to the side of the construction channel and the construction platform is dismantled.

[0049] Reference Figure 2 and Figure 3 Specifically, the construction platform includes a construction support 2, a supporting sliding member 3 and a plurality of lateral support mechanisms 4. The construction support 2 includes two support units 21, the facing ends of the two support units 21 are protruding and the protruding parts of the two support units 21 are hinged to each other, so as to adapt to the contour of the side wall of the water storage building and reduce the possibility of being unable to slide due to excessive resistance between the lateral support mechanism 4 and the side wall of the water storage building. The two support units 21 are fixed to each other by a fixing member 22 to form a relatively stable construction platform during construction. Among them, the support unit 21 is a steel truss structure and the upper plate surface of the support unit 21 is paved with a steel plate for construction.

[0050] There are multiple fixing members 22, and the multiple fixing members 22 are distributed along the length direction of the facing side edges of the two bracket units 21. The fixing member 22 includes a fixing screw 221 and two fixing screw tubes 222, and the two fixing screw tubes 222 are respectively covered and threadedly connected to the two ends of the fixing screw 221. The fixing screw tube 222 protrudes toward the outer wall of one side of the bracket unit 21 to form a connecting plate 223. The connecting plate 223 is provided with a plurality of connecting holes 224 extending in an arc path, and the connecting plate 223 is fixedly connected to the lower surface of the bracket unit 21 by bolts passing through the connecting holes 224, so that when the side wall of the water storage structure slides, a construction platform can also be formed relatively stably, reducing the influence of the mutual hinge of the bracket units 21 on the stability.

[0051] Reference Figure 2 and Figure 3Specifically, construction openings 211 are formed on the facing sides of the two bracket units 21 to facilitate placing the cofferdam steel plate 1 from the bracket unit 21 on the side wall of the water storage building and installing the cofferdam steel plate 1.

[0052] The bracket unit 21 is provided with a stand 23 for hoisting the cofferdam steel plate 1 and an electric hoist 24 provided on the stand 23, and the electric hoist 24 is used to hoist the cofferdam steel plate 1. In addition, a mounting hydraulic cylinder 25 for abutting the cofferdam steel plate 1 against the outer wall of the water storage building is hinged on the lower surface of the bracket unit 21, and the cylinder body of the mounting hydraulic cylinder 25 is hinged on the bracket unit 21, and the telescopic end of the mounting hydraulic cylinder 25 is hinged with a connecting flange seat 251, and the connecting flange seat 251 is fixedly connected to the mounting plate 11 by bolts.

[0053] In step S3, after the cofferdam steel plate 1 is hoisted onto the outer wall of the water storage building, the connecting flange seat 251 is simultaneously fixedly connected to the mounting plate 11, and then the mounting plate 11 of the cofferdam steel plate 1 is fitted onto the outer wall of the water storage building through the electric hoist 24 in cooperation with the two mounting hydraulic cylinders 25, and then the cofferdam steel plate 1 is abutted against the side wall of the water storage building through the mounting hydraulic cylinders 25, and then the water in the cofferdam steel plate 1 is pumped out, and finally the water diversion port is cut, so as to facilitate the installation of the cofferdam steel plate 1 on the side wall of the existing water storage building. Compared with the method of fixing the cofferdam steel plate 1 by fixing it to the bottom wall of the water storage building with a hydraulic cylinder, it can also effectively reduce the structural damage to the existing building, thereby achieving the purpose of facilitating the installation of the cofferdam steel plate 1 on the outer wall of the existing water storage building while reducing the damage to the water storage building.

[0054] Reference Figure 2 , there are multiple supporting sliding members 3, and the multiple supporting sliding members 3 are respectively fixedly connected to the lower surfaces of the two bracket units 21. The supporting sliding member 3 is an electric walking end beam with multiple rollers. The rollers of the supporting sliding member 3 abut against the top edge of the side wall of the water storage building, so that the two bracket units 21 are slidably arranged on the side wall of the water storage building and provide support. Of course, in other embodiments, the supporting sliding member 3 can also adopt a rubber crawler walking mechanism driven by a motor.

[0055] Reference Figure 2 and Figure 4 Specifically, four lateral support mechanisms 4 are provided on the bracket unit 21, and the four lateral support mechanisms 4 are divided into two groups, and the two groups of lateral support mechanisms 4 are respectively located on both sides of the supporting sliding member 3 to clamp the side wall of the water storage building, so that the bracket unit 21 is relatively stably connected to the side wall of the water storage building, thereby facilitating sliding and fixing.

[0056] The lateral support mechanism 4 includes a lateral support member 41 and a lateral sliding member 42. Both the lateral support member 41 and the lateral sliding member 42 are arranged on the bracket unit 21, and the lateral support member 41 is used to abut against the side wall of the water storage building during construction, so that the two bracket units 21 can form a relatively stable construction platform. The lateral sliding member 42 is used to guide the sliding of the bracket unit 21 laterally when sliding on the top of the side wall of the water storage building.

[0057] Reference Figure 4 and Figure 5 The lateral support member 41 includes a lateral support arm 411 hinged to the lower surface of the bracket unit 21 and a lateral support hydraulic cylinder 412 hinged to the lower surface of the bracket unit 21. Specifically, the cylinder body of the lateral support hydraulic cylinder 412 is hinged to the bracket unit 21, and the telescopic end of the lateral support hydraulic cylinder 412 is hinged to the lateral support arm 411. The lateral support arm 411 and the lateral support hydraulic cylinder 412 are both located on the side of the bracket unit 21 where the support sliding member 3 is provided, and the rotation planes of the lateral support arm 411 and the lateral support hydraulic cylinder 412 are perpendicular to the upper surface of the bracket unit 21.

[0058] Reference Figure 4 and Figure 6 The lateral support arm 411 includes a support arm body 413 hinged to the bracket unit 21 and a cushion block 414 fixedly connected to the outer wall of the support arm body 413 on the side facing the support sliding member 3. The length of the support arm body 413 is greater than the length of the cushion block 414 along the length direction of the support arm body 413, so that a gap is formed between the cushion block 414 and the bracket unit 21 through the cushion block 414, thereby reducing the possibility of interference with the side wall of the water storage building when the support arm body 413 shrinks and the bracket unit 21 slides relative to the side wall of the water storage building. Among them, the telescopic end of the lateral support hydraulic cylinder 412 is hinged to the lateral support arm 411.

[0059] In addition, since the thickness and angle of the side walls of different water storage buildings are different, and during the construction process, the pad 414 will abut against the side wall of the water storage building, it will generate a relatively large load on the side wall of the water storage building. In order to adapt to the thickness and angle of the side walls of different water storage buildings, the pad 414 is provided with a plurality of sliding holes 415 distributed along the length direction of the support arm body 413, and the inner wall of the sliding hole 415 is a stepped shaft structure and the small end is opened toward one side of the support sliding member 3.

[0060] Reference Figure 4 and Figure 6The sliding hole 415 is provided with an abutment column 43, which is a stepped shaft structure, and the large end of the abutment column 43 is adapted to and slidably connected to the inner wall of the sliding hole 415, and the small end of the abutment column 43 is adapted to the inner wall of the small end of the sliding hole 415, and the small end of the abutment column 43 passes through the sliding hole 415 and extends toward one side of the supporting sliding member 3 to abut the side wall of the water storage building. Among them, the part of the abutment column 43 located in the sliding hole 415 is sealed by a sealing ring embedded in the outer wall of the large end of the abutment column 43. The small end of the abutment column 43 is ball-hinged with an abutment plate 431 to further adapt to the side wall of the water storage building, and the small end of the abutment column 43 is covered with an abutment spring 432, and the two ends of the abutment spring 432 are respectively fixedly connected to the outer wall of the small end of the abutment column 43 and the inner wall of the sliding hole 415, and the abutment spring 432 is located in the sliding hole 415 to drive the abutment column 43 to reset.

[0061] The lateral support arm 411 is provided with a control assembly 5 for controlling the extension and sliding locking of the plurality of abutment columns 43 . The control assembly 5 includes an oil pump 51 provided on the bracket unit 21 , a control pipe 52 and a cut-off piece 53 provided on the lateral support arm 411 .

[0062] The control pipe 52 includes an oil delivery pipe 521 and a plurality of connecting oil pipes 522. One end of the connecting oil pipe 522 passes through the support arm body 413 and is connected to a cavity in the sliding hole 415 located at the side of the large end of the abutment column 43 away from the support sliding member 3. The other end of the connecting oil pipe 522 extends out of the support arm body 413 and is connected to the oil delivery pipe 521, wherein the cut-off member 53 is used to control the connecting oil pipe 522 to connect or cut off the delivery of hydraulic oil.

[0063] Reference Figure 4 and Figure 6 The end of the oil delivery pipe 521 away from the connecting oil pipe 522 is connected to the output end of the oil pump 51 through the three-way valve 523, and the remaining outlet of the three-way valve 523 is connected to the oil tank 524. The oil tank 524 is arranged on the bracket unit 21 to connect the oil pump 51 with the oil delivery pipe 521 through the three-way valve 523, or to connect the oil delivery pipe 521 with the oil tank 524 through the three-way valve 523. The input end of the oil pump 51 is connected to the oil tank 524 through a pipeline.

[0064] In step S3, the cofferdam steel plate 1 is placed through the bracket unit 21, and then the lateral sliding member 42 guides the sliding of the bracket unit 21 through the side wall of the water storage building, so that after the two bracket units 21 slide to the marking point, the telescopic end of the lateral support hydraulic cylinder 412 extends out, so that the support arm body 413 rotates toward the side wall of the water storage building. At the same time, in this process, the cushion block 414 will rotate toward the side wall of the water storage building with the abutment column 43.

[0065] After that, the oil delivery pipe 521 is connected to the oil tank 524 through the three-way valve 523, so that the abutting column 43 with a relatively long length extending out of the cushion block 414 will be partially retracted under the action of the side wall of the water storage building, and the excess oil will be returned to the oil tank 524 through the oil delivery pipe 521 and the three-way valve 523. Then the oil pump 51 draws the oil in the oil tank 524, and delivers the oil to the sliding hole 415 through the oil delivery pipe 521 and the connecting oil pipe 522, so as to push the abutting column 43 that is not abutting against the side wall of the water storage building to abut against the side wall of the water storage building.

[0066] Because the oil is supplied by the same oil pump 51, the multiple abutment columns 43 can adapt to the angle and thickness of the outer wall of the water storage building during the expansion and contraction process. Finally, the connecting oil pipe 522 is closed by the cutting piece 53, and the abutment column 43 can be relatively stably abutted against the side wall of the water storage building, so that the bracket unit 21 can adapt to the thickness and angle of the side wall of the water storage building through the abutment columns on the multiple pads 414, and can also relatively stably connect the bracket unit 21 to the side wall of the water storage building, reducing the possibility of the bracket unit 21 and the lateral support arm 411 swinging relative to the water storage building during the construction process. In addition, compared with the use of anchor rods and other methods, it can also effectively reduce the structural damage to the existing water storage building, thereby achieving the goal of stably installing the bracket unit 21 on the water storage building while reducing the damage to the existing water storage building.

[0067] Of course, in other embodiments, the control component 5 includes a plurality of electric push cylinders, which are arranged on the support arm body 413, and the telescopic ends of the electric push cylinders extend into the sliding holes and are fixedly connected to the abutment columns 43. In the process of abutting against the side walls of the water storage building, the telescopic ends of the abutment columns 43 are controlled by the plurality of electric push cylinders to adapt to the angle and thickness of the side walls of the water storage building.

[0068] Reference Figure 4 and Figure 6 The cut-off member 53 includes a cut-off valve 531, a cut-off gear 532, and a cut-off rack 533 meshed with a plurality of cut-off gears 532. The cut-off valve 531 is a valve that is controlled to be on and off by rotation, and the cut-off valve 531 is arranged one by one at the portion where the connecting oil pipe 522 passes through the supporting arm body 413, so as to control the on and off of the connecting oil pipe 522. The cut-off gear 532 is a gear ring, and the rotation control end of the cut-off valve 531 is coaxially fixedly connected to the inner ring edge of the cut-off gear 532. The cut-off rack 533 is parallel to the distribution direction of the plurality of connecting oil pipes 522 on the same supporting arm body 413, and the cut-off rack 533 is slidably connected to the supporting arm body 413 through a slide groove provided in the supporting arm body 413.

[0069] The end of the cutting rack 533 facing the bracket unit 21 is in a screw-shaped structure, and the screw portion of the cutting rack 533 is covered with a cutting control ring 534 threadedly connected, and the cutting control ring 534 is rotatably connected to the support arm body 413. The outer ring of the cutting control ring 534 is in a gear ring structure, and the outer ring of the cutting control ring 534 is meshed with a driving gear 535, and the support arm body 413 is fixedly connected to a cutting motor 54, and the output shaft of the cutting motor 54 is coaxially fixedly connected to the driving gear 535, so as to drive the cutting control ring 534 to rotate.

[0070] Of course, in other embodiments, the cut-off member 53 may also use a plurality of solenoid valves, which are arranged on the connecting oil pipe 522. When the connecting oil pipe 522 needs to be controlled to be connected or closed, it only needs to be controlled by the plurality of solenoid valves.

[0071] In step S3, when the bracket unit 21 needs to be fixed to the side wall of the water storage building, after the abutment column 43 abuts the abutment plate 431 against the side wall of the water storage building, it is only necessary to cut off the motor 54 to drive the cut-off control ring 534 to rotate, thereby driving the cut-off rack 533 to slide along the length direction, and then driving the multiple cut-off gears 532 to rotate, and finally closing or opening the multiple cut-off valves 531 to achieve the control of the connection and closure of the multiple connecting oil pipes 522. Compared with the control of electromagnetic valves or pneumatic valves, it can achieve the on-off control of multiple connecting oil pipes 522 under the premise of a small amount of electricity; at the same time, since there are relatively more debris at the construction site, it can also reduce the interference of debris at the construction site on the electromagnetic valve or pneumatic valve, and no additional air source is required.

[0072] Reference Figure 7 In addition, the lateral sliding member 42 includes a lateral sliding arm 421 hinged to the bracket unit 21, a sliding roller 422 for abutting against the side wall of the water storage building, and a lateral hydraulic cylinder 423. The lateral sliding arm 421 has the same structure as the lateral support arm 411. The sliding roller 422 is rotatably connected to the end of the lateral sliding arm 421 away from the bracket unit 21, the cylinder body of the lateral hydraulic cylinder 423 is hinged to the bracket unit 21, the telescopic end of the lateral hydraulic cylinder 423 is hinged to the lateral sliding arm 421, and the lateral hydraulic cylinder 423 is located on the side of the lateral sliding arm 421 away from the support sliding member 3.

[0073] Of course, in other embodiments, the lateral sliding member 42 includes a lateral slide slidably connected to the bracket unit 21, a driving hydraulic cylinder for pushing the lateral slide to slide toward the side wall of the water storage building, and a sliding roller 422 rotatably connected to the lateral slide, the cylinder body of the driving hydraulic cylinder is hinged to the bracket unit 21, and the telescopic end of the driving hydraulic cylinder is hinged to the lateral slide.

[0074] In step S3, when the bracket unit 21 needs to be slid to the marking point, it is only necessary to drive the lateral sliding arm 421 to swing toward the outer wall of the water storage building through the lateral hydraulic cylinder 423, and make the sliding roller 422 abut against the outer wall of the water storage building, so as to guide the sliding of the bracket unit 21 and limit the swinging of the bracket unit 21.

[0075] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A construction method for installing a water diversion outlet without stopping water based on a semicircular arc steel plate pressure cofferdam, characterized in that: The following steps are involved: S1, marking: marking the outer wall of the existing water storage building where the water diversion port needs to be constructed, which is away from the water-facing surface, and performing strength testing on the existing water storage building side wall. After the strength reaches a preset value, proceed to step S2; S2. Installation of the construction platform: Assemble the construction platform at the connection position between the existing water storage building and the construction channel, and slide the construction platform to connect it to the side wall of the water storage building; S3, installation: placing the cofferdam steel plate on the construction platform, then sliding the construction platform to the corresponding marking point, and then surrounding the cofferdam steel plate (1) at the marking point, the cofferdam steel plate (1) is a box-shaped structure with an upper opening and a side opening, and the cofferdam steel plate (1) is hoisted to the side wall of the water storage building through the construction platform and sealed, and the side wall of the cofferdam steel plate (1) is a semicircular plate-shaped structure; S4, cutting the water diversion: after the cofferdam steel plate (1) is installed, the water inside the cofferdam steel plate (1) is pumped out, and then the water diversion is cut by static cutting. After the water diversion is cut and the concrete waste generated by the construction is cleaned up, the construction platform is slid to the next water diversion mark point of the water storage building and steps S3 and S4 are repeated; if no water diversion is cut, the construction platform is slid to the side of the construction channel and the construction platform is dismantled; The construction platform comprises a construction support (2), a plurality of support sliding members (3) and a plurality of lateral support mechanisms (4), wherein the plurality of lateral support mechanisms (4) are divided into two groups, wherein the support sliding member (3) is arranged on the construction support (2) and is located between the two groups of lateral support mechanisms (4), wherein the support sliding member (3) is used to slidably connect the construction support (2) to the edge of the top of the side wall of the water storage building, wherein the lateral support mechanism (4) comprises a lateral support member (41) and a lateral sliding member (42), wherein the lateral support member (41) is hingedly connected to the construction support (2) and is used to abut against the side wall of the water storage building, and wherein the lateral sliding member (42) is hingedly connected to the construction support (2) and is used to slidably connect the construction support (2) to the side wall of the water storage building; The lateral support member (41) comprises a lateral support arm (411) hinged to the construction support (2) and a lateral support hydraulic cylinder (412) hinged to the construction support (2), wherein the telescopic end of the lateral support hydraulic cylinder (412) is hinged to the lateral support arm (411); The lateral support arm (411) comprises a support arm body (413) hinged to the construction support (2) and a cushion block (414) hinged to the outer wall of the support arm body (413) on one side facing the support sliding member (3).

2. The construction method for installing a water diversion outlet based on a semicircular arc steel plate pressure cofferdam without water shutoff according to claim 1 is characterized in that: The lateral support arm (411) is provided with a plurality of sliding holes (415) distributed along the length direction of the lateral support arm (411); the inner wall of the sliding hole (415) is a stepped shaft-shaped structure with the small end facing one side of the supporting sliding member (3); the sliding hole (415) is slidably provided with an abutment column (43) in a stepped shaft-shaped structure, and the large end of the abutment column (43) is adapted to and slidably connected to the hole wall of the sliding hole (415); the small end of the abutment column (43) extends out of the small end of the sliding hole (415) and is used to abut against the side wall of the water storage building; and the construction platform is provided with a control component (5) for controlling the extension and sliding locking of the plurality of abutment columns (43).

3. The construction method for installing a water diversion outlet based on a semicircular arc steel plate pressure cofferdam without water shutoff according to claim 2 is characterized in that: The control assembly (5) comprises an oil pump (51) arranged on the construction support (2), a control pipe (52) and a cut-off piece (53) arranged on the lateral support arm (411); the control pipe (52) comprises an oil delivery pipe (521) and a plurality of connecting oil pipes (522); one end of the connecting oil pipe (522) is connected to the oil delivery pipe (521); the other end of the connecting oil pipe (522) is connected to a cavity on the side of the sliding hole (415) away from the small end of the abutment column (43); the end of the oil delivery pipe (521) away from the connecting oil pipe (522) is connected to the output end of the oil pump (51) through a three-way valve (523); the three-way valve (523) can connect the output port of the oil delivery pipe (521) to the oil tank (524); the input end of the oil pump (51) is connected to the oil tank (524) through a pipeline; the cut-off piece (53) is used to simultaneously cut off or connect the connecting oil pipes (522).

4. The construction method for installing a water diversion outlet based on a semicircular arc steel plate pressure cofferdam without water shutoff according to claim 3 is characterized in that: The cutting member (53) comprises a cutting valve (531) controlled by rotation, a cutting gear (532) coaxially fixed to a control end of the cutting valve (531), and a cutting rack (533) meshed with a plurality of cutting gears (532); the cutting rack (533) is slidably connected to the lateral support arm (411); one end of the cutting rack (533) is rod-shaped and is covered with a cutting control ring (534); the cutting control ring (534) is threadedly connected to the cutting rack (533) and is rotatably connected to the lateral support arm (411); the cutting control ring (534) is rotatably connected to the lateral support arm (411).

5. The construction method for installing a water diversion port based on a semicircular arc steel plate pressure cofferdam without water shutoff according to claim 4 is characterized in that: The outer ring edge of the cutting control ring (534) is in a gear ring structure, and the outer ring of the cutting control ring (534) is meshed with a driving gear (535), the lateral support arm (411) is fixedly connected to a cutting motor (54), and the output shaft of the cutting motor (54) is coaxially fixedly connected to the driving gear (535).

6. The construction method for installing a water diversion port based on a semicircular arc steel plate pressure cofferdam without water shutoff according to claim 3 is characterized in that: The small end of the abutment column (43) is ball-hinged with an abutment plate (431).

7. The construction method for installing a water diversion outlet based on a semicircular arc steel plate pressure cofferdam without water shutoff according to claim 1 is characterized in that: The lateral sliding member (42) comprises a lateral sliding arm (421) hinged to the construction support (2), a sliding roller (422) for abutting against the side wall of the water storage building, and a lateral hydraulic cylinder (423) for controlling the rotation of the lateral sliding arm (421); the sliding roller (422) is rotatably connected to the lateral sliding arm (421); and the cylinder body and telescopic end of the lateral hydraulic cylinder (423) are respectively hinged to the lateral sliding arm (421) and the construction support (2).

8. The construction method for installing a water diversion port based on a semicircular arc steel plate pressure cofferdam without water shutoff according to claim 1 is characterized in that: The construction support (2) comprises at least two support units (21), two adjacent support units (21) are hinged to each other, and the lateral support member (41) and the lateral sliding member (42) are hinged to the support unit (21), the support sliding member (3) is fixedly connected to the support unit (21), and two adjacent support units (21) are fixedly connected via a fixing member (22).

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