Attached form-removal-free anti-flood wall and construction method thereof

Abstract

The invention belongs to the field of water conservancy and hydropower, and particularly relates to an attached form-removal-free anti-flood wall and a construction method thereof. The anti-flood wall comprises an anti-flood wall foundation and a plurality of sections of attached formworks. The attached template comprises a back panel and a water facing panel; a foundation anchoring part is arranged on the top surface of the anti-flood wall foundation; anchoring steel bars are arranged on the inner side of the back face plate, and anchoring steel bars are arranged on the inner side of the upstream face plate. The back face plate and the upstream face plate are oppositely arranged on the anti-flood wall foundation, the foundation anchoring part is surrounded in the middle to form a pouring cavity, and the anchoring steel bars of the back face plate and the anchoring steel bars of the upstream face plate are fixed to the foundation anchoring part. A wall reinforcement cage consistent with the pouring cavity in shape is arranged in the pouring cavity, concrete is poured into the pouring cavity, and the poured concrete, the back face plate and the upstream face plate form a wall body of the flood control wall. Formwork erecting and removing are not needed, on-site construction is facilitated, the construction process is simple, and the construction period is shortened.

Description

Technical Field

[0001] The invention belongs to the field of water conservancy and hydropower, and in particular relates to an attached non-removable formwork flood wall and a construction method thereof. Background Art

[0002] At present, flood walls are the main flood control engineering units used in the basin flood control system. Concrete flood walls are usually cast in situ. The process is mature and the quality can be guaranteed. However, the construction method of cast in situ is relatively complicated. The construction site needs to support the formwork in the early stage, which takes a long construction period. In the later stage, the formwork needs to be removed, which prolongs the construction period again. The formwork itself is heavy and the on-site operation is extremely inconvenient, which results in a long construction period. When the formwork is removed, the surface peels off and the construction occupies a large space, which is especially unfavorable for flood control system projects in hydropower stations.

[0003] Therefore, it is necessary to develop a cast-in-place process that is convenient for on-site construction, simple in construction process, and saves construction period; and to ensure the excellent quality of the flood wall. Based on this, an attached non-removal formwork flood wall and its construction method are proposed. Summary of the invention

[0004] The purpose of the present invention is to provide an attached type flood wall without formwork removal and a construction method thereof, which can facilitate on-site construction, simplify the construction process and save construction period by using an attached formwork to make the flood wall pouring construction without the need for formwork removal or processing of uneven surface after formwork removal.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An attached flood wall without formwork removal, the flood wall comprising a flood wall foundation and a plurality of segment attached formworks;

[0007] The attached template includes a back panel and a water-facing panel;

[0008] The top surface of the flood wall foundation is provided with a foundation anchor;

[0009] Anchor steel bars are arranged on the inner side of the back panel, and anchor steel bars are arranged on the inner side of the water-facing panel;

[0010] The back panel and the water-facing panel are arranged relatively on the flood wall foundation and surround the foundation anchor piece in the middle to form a casting cavity, and the anchor steel bars of the back panel and the anchor steel bars of the water-facing panel are fixed together with the foundation anchor piece;

[0011] A wall reinforcement cage having the same shape as the casting cavity is arranged in the casting cavity, and concrete is poured in the casting cavity. The poured concrete, the back panel and the water-facing panel form a flood-proof wall body.

[0012] The back panel and the front panel are arranged opposite to each other and fixed with through-length bolts. The number of through-length bolts and the arrangement and number of bolt holes on the panel can be adjusted as needed to ensure that the back panel and the front panel are firmly fixed.

[0013] The top of the back panel and the water-facing panel are both provided with lifting rings. Preferably, the number of the lifting rings is two, which are evenly arranged at the lifting center of gravity of the panel. The lifting ring can be set on the upper top surface of the panel and embedded in the panel when the panel is prefabricated, or the lifting ring can be fixed to the panel by setting a perforation on the panel and bolting. The setting of the lifting ring can be directly lifted to the designated position by a crane when the panel is assembled, which is convenient to use and does not affect the flood control effect.

[0014] The back panel is vertically arranged on the flood wall foundation, and the water-facing panel is obliquely arranged on the flood wall foundation. The back panel is generally a rectangular panel, and the water-facing panel is an oblique panel at a certain angle. A vertical panel is arranged on the oblique panel relative to the end connected to the flood wall foundation. The back panel and the water-facing panel have the same horizontal length and the same vertical height. A segment of the attached formwork includes a back panel and a water-facing panel. The back panel is arranged vertically, and the water-facing panel is arranged obliquely, and the two are arranged relative to each other.

[0015] The two sides of the back panel and the water-facing panel can be set as planes between several segmental attached formworks. When several segmental attached formworks are connected, one back panel is directly connected to another back panel, and several are connected in sequence; at the same time, one water-facing panel is directly connected to another water-facing panel, and several are connected in sequence. After the back panel and the water-facing panel are connected, a flood wall of a certain length is formed.

[0016] Several segmental attached formworks can be connected by embedded plates, which are embedded steel plates or some waterproof material plates, such as hard waterproof rubber plates.

[0017] Between several segmented attached formworks, a boss can be set on one side of the back panel and the front panel, and a groove matching the boss can be set on the other side. When several segmented attached formworks are connected, the boss of one back panel is connected to the groove of another back panel, and several are connected in sequence; at the same time, the boss of one front panel is connected to the groove of another front panel, and several are connected in sequence. After the back panel and the front panel are connected, a flood wall of a certain length is formed.

[0018] Preferably, the foundation anchor is a pre-embedded steel bar.

[0019] Preferably, the back panel and the water-facing panel are both prefabricated with concrete. The present invention also provides a construction method for the above-mentioned attached non-removal formwork flood wall, the construction method comprising:

[0020] 1) Use concrete to prefabricate several sections of attached formwork; each section of attached formwork includes a water-facing panel and a back panel; the inner side of the water-facing panel and the back panel is pre-embedded with anchor steel bars, the top surface is pre-embedded with lifting rings, and the vertical surface is reserved with bolt holes;

[0021] 2) Complete the flood wall foundation construction by pouring concrete and reserve foundation anchors; after positioning and laying out the lines on the flood wall foundation, hoist the attached formwork through the hoisting ring;

[0022] First tie the wall reinforcement cage at the location of the flood wall foundation, then hoist the back panel to the location, weld the embedded anchor steel bars on the back panel and the wall reinforcement cage to the foundation anchors; then hoist the flood facing panel to the location, weld the embedded steel bars on the flood facing panel to the foundation anchors;

[0023] 3) The back panel and the water-facing panel are connected and fixed using full-length bolts through the bolt holes reserved in the panels;

[0024] 4) Use embedded plates to connect the attached formwork of adjacent sections on the waterproof wall foundation to form a semi-enclosed structural casting cavity with only the top opening of each section wall;

[0025] 5) Pour concrete in the casting cavity until it is flush with the top of the attached formwork; at the same time, fully vibrate the concrete; pour concrete for surface maintenance and level the outer surface; cut off the through-length bolts on the attached formwork, and the construction of one segment of the flood wall is completed; completing several segments in sequence will complete the overall construction of the flood wall.

[0026] Optionally, the attached formwork of adjacent segments is connected via bosses and grooves on both sides of the back panel and the water-facing panel, and a waterproof sealing strip is provided at the connecting seam; the waterproof sealing strip may be made of a sealing material that swells when exposed to water.

[0027] Compared with the prior art, the advantages of the present invention are:

[0028] The construction method of the present invention does not require demolding, thus saving construction period; the template is lightweight, the construction method is simple and reasonable, and the project cost is saved; the surface of the flood wall is flat and beautiful, and there is no risk of damage due to demolding; concrete resources can be effectively utilized while maintaining the protective capacity of the concrete guardrail, which is in line with the engineering construction concept of "resource conservation and environmental protection". BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a cross-sectional view of the flood wall of the present invention;

[0030] Figure 2 It is a structural diagram of the flood wall foundation of the present invention;

[0031] Figure 3It is a structural diagram of the water-facing panel of the present invention;

[0032] Figure 4 is a structural diagram of the back panel of the present invention;

[0033] Figure 5 It is a structural diagram of the wall reinforcement cage of the present invention;

[0034] Figure 6 It is a structural diagram of the through-length bolt of the present invention;

[0035] Figure 7 is an elevation view of the back panel of the present invention;

[0036] Figure 8 It is a plan view of the embedded plate of the present invention;

[0037] Fig. 9 is a flow chart of the construction method of the present invention;

[0038] Reference numerals:

[0039] 1. Flood wall foundation; 2. Back panel; 3. Water-facing panel; 4. Foundation anchors; 5. Anchor steel bars; 6. Wall steel cage; 7. Full-length bolts; 8. Lifting rings. DETAILED DESCRIPTION

[0040] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0041] Example 1

[0042] like Figure 1-8 As shown, an attached type non-removable formwork flood wall comprises a flood wall foundation 1 and a plurality of segment attached formworks;

[0043] The attached template includes a back panel 2 and a water-facing panel 3;

[0044] The top surface of the flood wall foundation 1 is provided with a foundation anchor 4;

[0045] Anchor steel bars 5 are arranged inside the back panel 2, and anchor steel bars 5 are arranged inside the water-facing panel 3;

[0046] The back panel 2 and the water-facing panel 3 are relatively arranged on the flood wall foundation 1 and surround the foundation anchor 4 in the middle to form a casting cavity, and the anchor steel bars 5 of the back panel 2 and the anchor steel bars 5 of the water-facing panel 3 are fixed together with the foundation anchor 4;

[0047] A wall reinforcement cage 6 having the same shape as the casting cavity is arranged in the casting cavity, and concrete is poured in the casting cavity. The poured concrete, the back panel 2 and the water-facing panel 3 form a flood wall.

[0048] The back panel 2 and the water-facing panel 3 are arranged opposite to each other and fixed with through-length bolts 7 .

[0049] A lifting ring 8 is provided on the top of the back panel 2 and the water-facing panel 3 .

[0050] The back panel 2 is vertically arranged on the flood wall foundation 1 , and the water-facing panel 3 is obliquely arranged on the flood wall foundation 1 .

[0051] Several segment attached formworks are connected by embedded plates, or a boss is arranged on one side and a groove matching the boss is arranged on the other side of both sides of the back panel and the water-facing panel.

[0052] The foundation anchoring piece is a pre-embedded steel bar.

[0053] The back panel and the water-facing panel are both prefabricated with concrete.

[0054] Example 2

[0055] like Fig. 9 As shown, the construction method of the attached non-removable formwork flood wall described in Example 1, the concrete flood wall includes a prefabricated attached formwork, a full-length screw, a wall reinforcement cage, a flood wall foundation, an embedded plate, and a foundation anchor. The specific construction steps are as follows:

[0056] 1) The factory uses concrete to prefabricate the attached formwork segments, which are plates with a certain thickness. Each segment of the attached formwork is divided into two parts, including the front panel and the back panel. The inner side of the attached formwork panel is pre-embedded with anchor steel bars, the top surface is pre-embedded with lifting rings, and the vertical surface is reserved with bolt holes.

[0057] 2) The attached formwork is connected to the flood wall foundation through foundation anchors;

[0058] The foundation anchors include reserved steel bars, tying the wall steel cage, and after positioning and laying out, the attached formwork is hoisted through the hoisting ring;

[0059] The attached formwork is welded with the reserved steel bars on the flood wall foundation through the reserved steel bars on the inner side of the attached formwork; the wall steel cage is tied and welded firmly with the reserved steel bars in the attached formwork; the back panel of the attached concrete is hoisted on one side of the wall steel cage, and the water-facing panel of the attached concrete is hoisted on the other side of the wall steel cage;

[0060] 3) The attached formwork is connected and fixed by a full-length screw;

[0061] The back panel and the water-facing panel of the attached formwork are connected and fixed with full-length bolts through the bolt holes reserved in the panels;

[0062] 4) The attached formwork closes both sides of the wall through embedded plates (which can be embedded steel plates);

[0063] The attached formwork of adjacent sections is connected by means of embedded plates, thereby extending the concrete wall laterally; a semi-enclosed structure is formed in which each section wall has only an opening at the top; the structural joints are filled with waterproof materials according to the design requirements;

[0064] 5) Attached formwork casting;

[0065] Pour concrete into the assembled attached formwork, so that the concrete completely covers the wall reinforcement cage and is poured until it is flush with the top of the attached formwork; at the same time, fully vibrate the concrete;

[0066] After pouring the concrete, the surface is maintained and the outer surface is leveled; the full-length bolts on the attached formwork are cut off. At this point, all construction content of this section of the flood wall is completed.

[0067] The present invention casts the flood wall body and the flood wall foundation separately, thereby reducing construction time. A foundation steel cage may also be arranged in the flood wall foundation to increase its strength and long-term usability.

[0068] Any contents not described in detail in the present invention can be based on the conventional technical knowledge in the art.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that any modification or equivalent replacement of the technical solutions of the present invention does not depart from the spirit and scope of the technical solutions of the present invention and should be included in the scope of the claims of the present invention.

Claims

1. An attached flood wall without formwork removal, characterized in that: The flood wall comprises a flood wall foundation and a plurality of segment-attached formworks; The attached template includes a back panel and a water-facing panel; The top surface of the flood wall foundation is provided with a foundation anchor; Anchor steel bars are arranged on the inner side of the back panel, and anchor steel bars are arranged on the inner side of the water-facing panel; The back panel and the water-facing panel are arranged relatively on the flood wall foundation and surround the foundation anchor piece in the middle to form a casting cavity, and the anchor steel bars of the back panel and the anchor steel bars of the water-facing panel are fixed together with the foundation anchor piece; A wall reinforcement cage having the same shape as the casting cavity is arranged in the casting cavity, and concrete is poured in the casting cavity. The poured concrete, the back panel and the water-facing panel form a flood-proof wall body.

2. The attached non-removable formwork flood wall according to claim 1 is characterized in that: The back panel and the water-facing panel are arranged opposite to each other and fixed with through-length bolts.

3. The attached non-removable formwork flood wall according to claim 1 is characterized in that: The tops of the back panel and the water-facing panel are both provided with lifting rings.

4. The attached non-removable formwork flood wall according to claim 1 is characterized in that: The back panel is vertically arranged on the flood wall foundation, and the water-facing panel is obliquely arranged on the flood wall foundation.

5. The attached non-removable formwork flood wall according to claim 1 is characterized in that: Several segment attached formworks are connected by embedded plates.

6. The attached non-removable formwork flood wall according to claim 1, characterized in that: The foundation anchoring piece is a pre-embedded steel bar.

7. The attached non-removable formwork flood wall according to claim 1 is characterized in that: The back panel and the water-facing panel are both prefabricated with concrete.

8. The attached non-removable formwork flood wall according to claim 1 is characterized in that: On both sides of the back panel and the water-facing panel, a boss is arranged on one side, and a groove matching the boss is arranged on the other side.

9. A construction method for the attached non-removable formwork flood wall according to any one of claims 1 to 8, the construction method comprising: 1) Use concrete to prefabricate several sections of attached formwork; each section of attached formwork includes a water-facing panel and a back panel; the inner side of the water-facing panel and the back panel is pre-embedded with anchor steel bars, the top surface is pre-embedded with lifting rings, and the vertical surface is reserved with bolt holes; 2) Complete the flood wall foundation construction by pouring concrete and reserve foundation anchors; after positioning and laying out the lines on the flood wall foundation, hoist the attached formwork through the hoisting ring; First tie the wall reinforcement cage at the location on the flood wall foundation, then hoist the back panel to the location, and then weld the embedded anchor steel bars on the back panel and the wall reinforcement cage to the foundation anchors; then hoist the flood facing panel to the location, and weld the embedded steel bars on the flood facing panel to the foundation anchors; 3) The back panel and the water-facing panel are connected and fixed using full-length bolts through the bolt holes reserved in the panels; 4) Connect the back panel and the front panel of the segment horizontally to form a semi-enclosed structural casting cavity with only the top opening of each segment wall; 5) Pour concrete in the casting cavity until it is flush with the top of the attached formwork; at the same time, fully vibrate the concrete; pour concrete for surface maintenance and level the outer surface; cut off the through-length bolts on the attached formwork, and the construction of one segment of the flood wall is completed; completing several segments in sequence will complete the overall construction of the flood wall.

10. The construction method according to claim 9, characterized in that: The attached formwork of adjacent sections is connected through bosses and grooves on both sides of the back panel and the water-facing panel, or the attached formwork of adjacent sections is connected by using an embedded plate; a waterproof sealing strip is provided at the connecting seam.

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