A construction method for a rapid partition wall of a water-containing structure and a pipe culvert

Abstract

The present invention relates to a construction method of a rapid partition wall for a water-holding structure and a pipe culvert, characterized in that the construction method comprises: making a water-facing panel and a wall structural steel bar, reinforcing a structure between panels, taking wall sealing measures, and installing a rapid partition wall. The present invention adopts a rapid partition wall technology, which can efficiently and safely reduce the impact on the normal operation of existing water treatment facilities such as water plants and sewage treatment plants, reduce the time of shutdown and production reduction, and avoid limited space and toxic and harmful operations.

Description

Technical Field

[0001] The invention relates to a construction method for a rapid partition wall of a water-containing structure and a culvert, which can efficiently and safely reduce the impact on the normal operation of existing water treatment facilities such as water plants and sewage treatment plants, reduce the time of shutdown and production reduction, and avoid limited space and toxic and harmful operations. Background Art

[0002] The construction of municipal water treatment plants in various cities and regions has gradually entered a peak, and the renovation and expansion of water treatment facilities has continued to increase. The connection and partition between existing structures and new structures are increasing. The difficulty of implementing structural partition construction such as pump rooms, pools, and culverts is increasing, and the requirements for operation period, quality, and safety are becoming more and more stringent. All these factors are driving the continuous development of structural partition technology, and the use of rapid partition wall technology is one of them.

[0003] If traditional concrete technology is used to block the water flow in the structure, the water level in the box must be at a static low water level or no water for a long time to carry out various construction processes. Its disadvantages are: it has a great impact on the normal operation of existing water treatment facilities such as water plants and sewage treatment plants, and in serious cases it will cause an impact on the surrounding environment and residents' lives, causing adverse social impacts; at the same time, the construction inside the structure is a limited space, toxic and harmful operation, with greater safety risks and more hidden safety hazards, which is not conducive to the occupational health and safety of workers.

[0004] The rapid partition wall technology can effectively and safely reduce the impact on the normal operation of existing water treatment facilities such as water plants and sewage treatment plants, reduce the time of shutdown and production reduction, and avoid confined space and toxic and harmful operations. Summary of the invention

[0005] The purpose of the present invention is to provide a construction method for a rapid partition wall of a water-containing structure and a culvert, so as to reduce the impact on the normal operation of existing water treatment facilities such as water plants, sewage treatment plants, and water culverts, and ensure the occupational health and safety of workers.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: A construction method for a rapid partition wall of a water-holding structure and a pipe culvert, characterized in that the construction method comprises

[0007] A. Make the water-facing panels and wall structure steel bars, and set an anti-corrosion layer on the surface of the water-facing panels;

[0008] B. Reinforcement structure between panels: the wall structure steel bars are placed between the panels on both sides facing the water, and concrete is pre-filled between the panels on both sides facing the water. Areas to be poured are reserved at the bottom and both sides of the pre-filled concrete. Tension screws are used to reinforce the panels on both sides facing the water in the area to be poured.

[0009] C. Wall sealing measures: flexible water-stopping measures are installed on the inner sides of the bottom and both sides of the water-facing panel surface, porous grouting pipes are arranged along the outer side of the flexible water-stopping measures, and an annular water-stopping pressure plate is arranged on the upper part of the water-facing panel;

[0010] D. Installation of the rapid partition wall: a hole is opened at the location to be partitioned in the original structure. After the rapid partition wall is placed in the location to be partitioned in the original structure, a rubber water-stop pad is set at the bottom of the annular water-stop pressure plate, and it is tightened and fixed to the top plate surface of the original structure with bolts, so that the grouting pipe is located at the contact surface between the water-facing surface panel and the original structure after installation, and concrete is poured in the area to be poured, so that the rapid partition wall is connected to the original structure as a whole.

[0011] The annular water-stopping pressure plate can be made of metal, concrete, quick-drying cement or other materials to ensure the sealing of the panel and the original structure. Furthermore, the annular water-stopping pressure plate includes an angle steel arranged around the upper part of the rapid partition wall, a hole is provided in the side wing plate of the angle steel, and it is connected to the water-facing panel by tensioning screws, a hole is provided on the bottom surface of the angle steel, and it is connected to the top plate surface of the original structure by bolts, and a rubber water-stop pad is provided between the bottom surface of the angle steel and the top plate surface of the original structure.

[0012] Furthermore, the flexible water-stopping measures include rubber water-stopping strips, water-repellent cloth, flexible water-blocking boards or other water-stopping measures to ensure that the water-facing surface panel fits tightly to the original structure.

[0013] Furthermore, the water-facing surface panel is made of high-strength concrete, and the anti-corrosion layer is made of polyurethane or inorganic salt mortar.

[0014] Furthermore, the top of the rapid partition wall is pre-filled with concrete and pre-embedded with hanging bolts.

[0015] The present invention adopts rapid partition wall technology, which can effectively and safely reduce the impact on the normal operation of existing water treatment facilities such as water plants and sewage treatment plants, reduce the time of shutdown and production reduction, and avoid limited space, toxic and harmful operations. It has great potential for application in the renovation and expansion of water treatment facilities such as water plants, sewage treatment plants, and water pipes and culverts, and has considerable economic, social and environmental benefits. The present invention has the following characteristics:

[0016] 1. Steel, concrete or other high-strength materials are used as the water-facing panel material and also as the structural external formwork plate. The overall strength is high, the installation is simple, and there is no need for secondary assembly and secondary demolding during use, which optimizes the construction process;

[0017] 2. The anti-corrosion material is determined according to the site environment requirements. The prefabricated anti-corrosion layer can make the water-facing panel have good corrosion resistance, and it can also avoid secondary anti-corrosion construction after the partition structure is completed;

[0018] 3. Part of the wall structure and structural steel bars are prefabricated and combined with the water-facing panel to form an integral component. At the same time, lifting steel bars are set to achieve overall lifting and shorten the construction time;

[0019] 4. Pre-fill concrete to reinforce the connection between the water-facing panels, and use preset tension screws to reinforce the connection in the area to be poured, which reduces the workload of pouring cast-in-place concrete and reduces the pouring time;

[0020] 5. Flexible water-stopping devices are installed around the water-facing panel at the junction with the original structure, which fits closely to the original structure. Multi-porous grouting pipes are embedded in the joints. Grouting filling is carried out after the cast-in-place concrete is completed. An annular water-stopping pressure plate is installed on the upper part of the water-facing panel to ensure the sealing between the panel and the original structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the water-facing surface panel and the wall structure reinforcement of the present invention.

[0022] Figure 2 This is a blasting diagram of the rapid partition wall of the present invention.

[0023] Figure 3 The figure is an installation diagram of the quick partition wall of the present invention.

[0024] The figure includes: a water-facing surface panel 1, an anti-corrosion layer 2, wall structure steel bars 3, hanging bolts 4, pre-filled concrete 5, tension screws 6, flexible water-stopping measures 7, a porous grouting pipe 8, and an annular water-stopping pressure plate 9. DETAILED DESCRIPTION

[0025] The present invention is further described below through specific examples.

[0026] A rapid partition wall for water-containing structures and culverts, characterized in that the rapid partition wall includes water-facing surface panels 1 located on both sides of the rapid partition wall, wall structural steel bars 3 and pre-filled concrete 5 are arranged between the water-facing surface panels on both sides, areas to be poured are reserved between the water-facing surface panels on both sides at the bottom and both sides of the pre-filled concrete, tension screws 6 are used to reinforce the water-facing surface panels on both sides of the area to be poured, an annular water-stopping pressure plate 9 is arranged on the upper part of the water-facing surface panel, and flexible water-stopping measures 7 are arranged on the bottom and inner sides of the edges of the water-facing surface panels.

[0027] Furthermore, the annular water-stopping pressure plate includes an angle steel arranged around the upper part of the rapid partition wall, and holes are provided in the side wing plates of the angle steel, which are connected to the water-facing surface panel by tension screws.

[0028] Furthermore, the flexible water-stopping measures 7 include rubber water-stopping strips, water-repellent cloth, flexible water-blocking boards or other water-stopping measures to ensure that the water-facing surface panel fits tightly to the original structure.

[0029] Furthermore, the water-facing surface panel is made of high-strength concrete, and an anti-corrosion layer 2 is provided on the surface of the water-facing surface panel 1 .

[0030] Furthermore, hanging bolts 4 are embedded in the top of the quick partition wall and in the filling concrete.

[0031] Furthermore, a porous grouting pipe 8 is arranged along the outer side of the flexible water-stopping measure 7, so that the grouting pipe is located at the contact surface between the water-facing surface panel and the original structure after installation.

[0032] Furthermore, when the rapid partition wall is placed at the position to be partitioned in the original structure, a rubber water-stop pad is arranged at the bottom of the annular water-stop pressure plate, and is tightened and fixed to the top plate surface of the original structure with bolts, and concrete is poured in the area to be poured, so that the rapid partition wall is connected to the original structure as a whole.

[0033] The specific embodiment is the isolation work of the water outlet channel of the clean water tank.

[0034] (1) Project Overview

[0035] The expansion project of a city's water plant includes the work of isolating the outlet channel of the original clear water tank:

[0036] The existing outlet channel has a cross-sectional size of 2.7m×2.7m, a bottom elevation of 0.3m, a top elevation of 3.35m, and a pool wall and top plate thickness of 0.35m. The design requires that this outlet channel be permanently blocked and the water flow be redirected to other routes.

[0037] (2) Product Application

[0038] Combined with the above project overview, the application of this product can optimize the design scheme, and the use of rapid partition walls can effectively improve speed, construction period, safety, environmental benefits, etc.

[0039] (3) Application solutions

[0040] 1. Water-facing panel

[0041] 1) Panel material selection

[0042] Material: high strength concrete.

[0043] 2) Panel shape, specifications, strength design and verification

[0044] Dimensions: height 3250mm × width 2650mm (the original box culvert net height is 2700mm + top plate thickness is 350mm + upward flip is 200mm), bottom chamfer size is 250mm*350mm (slightly larger than the actual size).

[0045] Thickness: 63mm.

[0046] Concrete strength: Same as the concrete strength of the original structure, i.e. C30.

[0047] 3) Panel manufacturing

[0048] 2. Panel anti-corrosion treatment

[0049] 1) Selection of anti-corrosion materials

[0050] Material: Inorganic salt mortar anti-corrosion, thickness 300μm.

[0051] 2) Panel processing

[0052] 3. Wall structural steel bars

[0053] 1) Fabrication and installation of steel bars between panels

[0054] Steel bar arrangement: prefabricated, hot-rolled grade 3 rebar, double-layer, bidirectional 16@150mm;

[0055] 2) Lifting and other measures Steel bar production and installation

[0056] Pre-install four lifting φ20 bolts in the middle of the hole 2700*500 for hooking.

[0057] 4. Reinforcement structure between panels

[0058] 1) Installation and pouring of pre-filled concrete around the formwork

[0059] Height 3000mm (leave 250mm for pouring area at the bottom) × width 2350mm (leave 150mm for pouring area on each side), use C30 concrete, cast in vertical formwork, and remove the formwork when strength is reached.

[0060] 2) Tension screw reinforcement in the area to be poured

[0061] Reinforcement measures: Use tension screws, divided into upper, middle and lower rows, each with a horizontal spacing of 3150mm (three rows in total), and a vertical spacing of 1500mm (three rows in total), and a tension screw at the bottom with a horizontal spacing of 440mm.

[0062] 5. Wall sealing measures

[0063] 1) Set up flexible water-stopping measures at the connection point with the original structure

[0064] Install rubber water stop strips on the inner side of the left, right and bottom sides of the panel (pre-embedded nuts in the template + pressure strips + bolt connections), and use the flexibility of the rubber water stop strips to ensure that the contact surface between the panel and the box culvert is in close contact.

[0065] 2) Pre-embedded porous grouting pipes at the joints

[0066] An 8mm multi-hole grouting pipe is laid along the outside of the rubber water stop strip so that the grouting pipe is located at the contact surface between the panel and the box culvert after installation.

[0067] 3) An annular pressure plate is set on the upper part of the water-facing panel

[0068] The short side of the top opening of the panel is placed with a shaped angle steel (200mm*200mm*14mm) with a length of 448mm. Two holes (spacing 463mm, diameter 16mm) are opened on the side wing of the angle steel and connected to the panel with tension screws. The long side of the short side of the top opening of the panel is a shaped angle steel of the same specification, with a length of 2650mm. A 3mm rubber water stop pad is set on the bottom of the steel plate and bolted to the top plate of the box culvert.

[0069] 6. On-site installation

[0070] After the rapid partition wall arrives at the site and is hoisted and installed as a whole, the concrete pouring of the area to be poured is carried out. After the curing is completed, the partition is realized. The leakage is observed two days later. No obvious leakage point is found and no grouting is required.

[0071] (4) Analysis of program indicators

[0072] Table 1 Analysis of program indicators

[0073]

Claims

1. A construction method for a rapid partition wall of a water-holding structure and a culvert, characterized in that The construction method includes A. Make the water-facing panels and wall structure steel bars, and set an anti-corrosion layer on the surface of the water-facing panels; B. Reinforcement structure between panels: place the wall structure steel bars between the water-facing panels on both sides, pre-fill concrete between the water-facing panels on both sides, reserve areas to be poured at the bottom and both sides of the pre-filled concrete, and use tension screws to reinforce the water-facing panels on both sides of the pouring area; C. Install flexible water-stopping measures at the bottom and inside the edges of both sides of the water-facing panel surface, lay out porous grouting pipes along the outside of the flexible water-stopping measures, and set an annular water-stopping pressure plate on the upper part of the water-facing panel to form a quick partition wall; D. A hole is opened at the position to be partitioned in the original structure. After the quick partition wall is placed in the position to be partitioned in the original structure, a rubber water-stop pad is set at the bottom of the annular water-stop pressure plate, and it is tightened and fixed to the top plate surface of the original structure with bolts, so that the grouting pipe is located at the contact surface between the water-facing surface panel and the original structure after installation, and concrete is poured in the area to be poured, so that the quick partition wall is connected to the original structure as a whole.

2. The construction method of the rapid partition wall according to claim 1 is characterized in that: The annular water-stop pressure plate includes an angle steel arranged around the upper part of the rapid partition wall. Holes are opened in the side wing plates of the angle steel and are connected to the water-facing surface panel by tension screws. Holes are set on the bottom surface of the angle steel and are connected to the top plate surface of the original structure by bolts. A rubber water-stop pad is arranged between the bottom surface of the angle steel and the top plate surface of the original structure.

3. The construction method of the rapid partition wall according to claim 1, characterized in that: The flexible water-stopping measures include rubber water-stopping strips, water-repellent cloth or flexible water-blocking boards.

4. The construction method of the rapid partition wall according to claim 1 is characterized in that: The water-facing surface panel is made of high-strength concrete, and the anti-corrosion layer is made of polyurethane or inorganic salt mortar.

5. The construction method of the rapid partition wall according to claim 1 is characterized in that: The top of the rapid partition wall is pre-filled with concrete and embedded with hanging bolts.

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