Anchor cable concrete slope protection construction method, template device and system

Abstract

The invention discloses an anchor cable concrete slope protection construction method. The method comprises the steps that an anchor cable is embedded and fixed in a preset position on a slope; a slope protection reinforcing mesh, a rail and a sliding formwork are installed on the side slope; the sliding formwork continuously moves upwards along the track, and slope concrete below the anchor cable is poured in the moving process of the sliding formwork; the sliding formwork continuously moves upwards along the track to cross the anchor cable; the extending end of the anchor cable extends outwards, a movable formwork on the sliding formwork is erected at the position where the anchor cable is located, and the anchor cable penetrates through a cable penetrating groove of the movable formwork; and the sliding formwork continuously moves upwards along the track, and slope concrete above the anchor cable is poured in the moving process of the sliding formwork. The invention further discloses an anchor cable concrete slope protection construction formwork device and system. According to the anchor cable concrete slope protection construction method, the overall construction efficiency and quality are improved. The anchor cable concrete slope protection construction formwork device and system are simple in structure and convenient to operate, and the anchor cable concrete slope protection construction method can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of slope protection engineering, and particularly relates to a construction method, formwork device and system for anchor cable concrete slope protection. Background Art

[0002] In the slope support of water conservancy and hydropower projects, a support form combining anchor cables and slope protection concrete panels is often adopted. The typical feature of this support form is that the slope protection concrete is arranged closely against the slope, and the anchor cables are outside the slope protection concrete.

[0003] For the above slope protection form, the following two construction methods are commonly used. Method 1: First, construct the anchor cable drilling, cable laying and grouting links, and then use formwork to construct the concrete slope protection layer by layer. For example, a construction method for high slope concrete slope protection project disclosed in the Chinese patent document with the application number 202110775936.1. The advantage of Method 1 is that the grouting of the anchor cable is constructed first, ensuring that the age of the grouting body can be increased in advance; the disadvantage of Method 1 is that the anchor cables are constructed along with the slope excavation first, and then the slope concrete is constructed section by section from bottom to top along the slope, that is, after constructing one section, waiting for the concrete of this section to solidify and reach the requirements before constructing the next section. On the one hand, the overall construction efficiency is low, and generally manual formwork erection is required for each section, with a long construction period and high labor costs. On the other hand, there are gaps between the slope concretes of each section, and the construction efficiency is poor. Method 2: First, use a slip form to construct the concrete slope protection section by section, and then construct the anchor cable drilling, cable laying and grouting to install the anchor cables. The advantage of Method 2 compared with Method 1 is that the slope protection concrete is constructed section by section using a slip form, and the construction efficiency is improved and the cost of manual formwork erection is reduced; the disadvantage of Method 2 compared with Method 1 is that when the anchor cables are constructed later, more special equipment is required due to the lack of a platform, and the grouting time of the anchor cables is postponed, resulting in a late strength reaching time of the grouting body, and the overall construction efficiency is still not good. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a construction method for anchor cable concrete slope protection that improves the overall construction efficiency and quality; and also provide an anchor cable concrete slope protection construction formwork device and system with a simple structure, convenient operation, and capable of realizing the construction method for anchor cable concrete slope protection.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A construction method for anchor cable concrete slope protection includes the following steps:

[0007] S1. During the process of slope excavation, carry out anchor cable construction on the formed slope surface to embed the anchor cables at predetermined positions on the slope;

[0008] S2. Install a slope protection steel mesh on the slope, install side formworks and tracks on both sides of the slope protection steel mesh respectively, slide a sliding formwork across the slope protection steel mesh on the tracks, and bend and fix the protruding end of the cable anchor to the slope protection steel mesh.

[0009] S3. Continuously move the sliding formwork upward along the tracks. During the movement of the sliding formwork, pour the slope concrete below the cable anchor. Stop when the sliding formwork moves up to a set distance from the cable anchor, and stop pouring the slope concrete below the cable anchor when it reaches the set distance from the cable anchor.

[0010] S4. After the slope concrete below the cable anchor solidifies and meets the standards, continue to move the sliding formwork upward along the tracks until it crosses the cable anchor.

[0011] S5. Release the fixation of the protruding end of the cable anchor to the slope protection steel mesh, extend the protruding end of the cable anchor outward, erect the movable formwork on the sliding formwork at the position where the cable anchor is located, and the cable anchor passes through the cable passing groove of the movable formwork.

[0012] S6. Continuously move the sliding formwork upward along the tracks. During the movement of the sliding formwork, pour the slope concrete above the cable anchor.

[0013] As a further improvement of the above technical solution:

[0014] In S5, the movable formwork on the sliding formwork first flips downward to be parallel to the slope, and then moves downward to be erected at the position where the cable anchor is located.

[0015] In S1, the cable anchors on the slope are buried and fixed by drilling, inserting the cables and grouting.

[0016] Before the cable anchor is buried and fixed, construct a construction platform by excavating below a predetermined position on the slope.

[0017] In S1, at least two predetermined positions are arranged at intervals along the inclined direction of the slope. One row of cable anchors is arranged at each predetermined position. The slope concrete below, at the location and above each row of cable anchors is constructed in the manner of S3 to S6 until the construction of the entire slope concrete is completed.

[0018] In S3, the set distance is 0.1 - 0.5 m.

[0019] After the construction of the slope concrete at the position of the cable anchor is completed, install a cushion block on the cable anchor so that the cushion block abuts tightly against the slope concrete.

[0020] A construction formwork device for cable anchor concrete slope protection is used to implement the above-mentioned cable anchor concrete slope protection construction method, including a sliding formwork and a movable formwork. The movable formwork is flip - set on the lower side of the sliding formwork. An expansion component is arranged between the movable formwork and the sliding formwork. A cable passing groove for the cable anchor to pass through is arranged on the movable formwork.

[0021] As a further improvement of the above technical solution:

[0022] The telescopic member is a telescopic cylinder, a telescopic oil cylinder, a telescopic electric cylinder or a mechanical telescopic member.

[0023] An anchor cable concrete slope protection construction formwork system includes a lifting mechanism, tracks respectively arranged on both sides of the slope protection steel mesh, and the above-mentioned anchor cable concrete slope protection construction formwork device. The sliding formwork is slidably mounted on the tracks and spans across the slope protection steel mesh. The lifting mechanism is arranged at the top of the slope and is connected to the sliding formwork.

[0024] Compared with the prior art, the advantages of the present invention are as follows:

[0025] In the anchor cable concrete slope protection construction method of the present invention, the slope concrete below the anchor cable is poured in the way of moving the sliding formwork upward while pouring, and the slope concrete at the anchor cable and the slope concrete above the anchor cable are also poured in the way of moving the sliding formwork upward while pouring. Compared with the prior art of pouring concrete section by section from bottom to top along the slope, on the one hand, the waiting time for pouring concrete section by section is reduced, and the overall construction efficiency is improved. On the other hand, the continuity and integrity of the slope concrete are improved, thereby improving the construction quality. On the third hand, it not only meets the requirement of constructing the anchor cable before pouring the slope concrete, which can advance the age of the grouting body in the part of the anchor cable inserted into the slope, thus improving the overall strength of the later slope protection, but also enables the slope concrete at the anchor cable and the slope concrete above the anchor cable to be continuously constructed in the way of moving the sliding formwork upward while pouring as a whole, connecting the slope concrete at the anchor cable and the slope concrete above the anchor cable into an integral structure, and improving the overall construction efficiency and quality.

[0026] The anchor cable concrete slope protection construction formwork device of the present invention has a simple structure and is convenient to operate, and can realize the anchor cable concrete slope protection construction method.

[0027] The anchor cable concrete slope protection construction formwork system of the present invention includes an anchor cable concrete slope protection construction formwork device and has all the advantages of the anchor cable concrete slope protection construction formwork device. Description of the Drawings

[0028] Figure 1 is a flowchart of the anchor cable concrete slope protection construction method of the present invention.

[0029] Figure 2 is a structural schematic diagram after the completion of the anchor cable concrete slope protection construction method of the present invention.

[0030] Figure 3 is a side view structural schematic diagram of the anchor cable concrete slope protection construction formwork device of the present invention.

[0031] Figure 4 is a top view structural schematic diagram of the anchor cable concrete slope protection construction formwork device of the present invention.

[0032] Figure 5 It is a schematic structural view of the telescopic member of the construction formwork device for the cable anchor concrete slope protection of the present invention.

[0033] Figure 6 It is a schematic structural view of the construction formwork system for the cable anchor concrete slope protection of the present invention.

[0034] Each mark in the figure represents:

[0035] 1. Slope; 2. Cable anchor; 21. Cushion seat; 3. Slope protection steel mesh; 4. Track; 5. Sliding formwork; 6. Movable formwork; 61. Cable passing groove; 7. Telescopic member; 8. Lifting mechanism. Specific embodiments

[0036] The present invention will be further described in detail below with reference to the accompanying drawings of the specification and specific embodiments.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "assembled", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Embodiment 1:

[0041] Figure 1An embodiment of the construction method of the anchor cable concrete slope protection of the present invention is shown. The construction method of the anchor cable concrete slope protection in this embodiment includes the following steps:

[0042] S1. During the process of excavating and forming the slope 1, the anchor cable 2 is constructed for the formed slope surface, so that the anchor cable 2 is buried and fixed at a predetermined position on the slope 1;

[0043] S2. Install the slope protection steel mesh 3 on the slope 1, install the side formwork and the track 4 on both sides of the slope protection steel mesh 3 respectively, slide the sliding formwork 5 straddling the slope protection steel mesh 3 on the track 4, and bend and fix the extended end of the anchor cable 2 on the slope protection steel mesh 3;

[0044] S3. The sliding formwork 5 continuously moves upward along the track 4. During the movement of the sliding formwork 5, the slope surface concrete below the anchor cable 2 is poured. When the sliding formwork 5 moves up to a set distance from the anchor cable 2, it stops, and when the slope surface concrete below the anchor cable 2 reaches the set distance from the anchor cable 2, the pouring stops;

[0045] S4. After the slope surface concrete below the anchor cable 2 solidifies and meets the standard, the sliding formwork 5 continues to move upward along the track 4 until it crosses the anchor cable 2;

[0046] S5. Release the fixation of the extended end of the anchor cable 2 and the slope protection steel mesh 3, extend the extended end of the anchor cable 2 outward, erect the movable formwork 6 on the sliding formwork 5 at the position where the anchor cable 2 is located, and the anchor cable 2 passes through the cable passing groove 61 of the movable formwork 6;

[0047] S6. The sliding formwork 5 continuously moves upward along the track 4. During the movement of the sliding formwork 5, the slope surface concrete above the anchor cable 2 is poured.

[0048] In this construction method of the anchor cable concrete slope protection, the slope surface concrete below the anchor cable 2 is poured in the way of moving the sliding formwork 5 upward while pouring, and the slope surface concrete at the position of the anchor cable 2 and the slope surface concrete above the anchor cable 2 are also poured in the way of moving the sliding formwork 5 upward while pouring. Compared with the existing way of pouring concrete section by section from bottom to top along the slope 1, on the one hand, the waiting time for pouring concrete section by section is reduced, and the overall construction efficiency is improved; on the other hand, the continuity and integrity of the slope surface concrete are improved, thus improving the construction quality; on the third hand, it not only meets the requirement of constructing the anchor cable 2 before pouring the slope surface concrete, which can make the grouting body age of the part of the anchor cable 2 inserted into the slope 1 increase in advance, thereby improving the overall strength of the later slope protection, but also enables the slope surface concrete at the position of the anchor cable 2 and the slope surface concrete above the anchor cable 2 to be continuously constructed in the way of moving the sliding formwork 5 upward while pouring, so that the slope surface concrete at the position of the anchor cable 2 and the slope surface concrete above the anchor cable 2 are connected into an integral structure, improving the overall construction efficiency and quality.

[0049] Further, in this embodiment, in S5, the movable formwork 6 on the sliding formwork 5 first turns down to be parallel to the slope 1 and then moves down to be erected at the position where the cable anchor 2 is located. The movable formwork 6 on the sliding formwork 5 first turns down to be parallel to the slope 1 and then moves down to be erected at the position where the cable anchor 2 is located, so that the movable formwork 6 abuts tightly against the end face or the upper surface of the slope concrete below the cable anchor 2 to prevent slurry leakage during pouring.

[0050] In other embodiments, the movable formwork 6 on the sliding formwork 5 can directly turn down to be parallel to the slope 1 and tightly coincide with the upper surface of the slope concrete below the cable anchor 2 for an appropriate length. In this way, starting from the initial stage, the sliding formwork 5 can be moved up while pouring (if the movable formwork 6 abuts against the end face of the slope concrete below the cable anchor 2, it is preferably to pour for an appropriate time first at the start and then move the sliding formwork 5 up while pouring to prevent slurry leakage at the initial pouring stage).

[0051] Further, in this embodiment, in S1, the cable anchors 2 on the slope 1 are embedded by drilling, inserting the cables and grouting.

[0052] Further, in this embodiment, before the cable anchor 2 is embedded, a construction platform is excavated below a predetermined position on the slope 1. Drilling, inserting the cables and grouting to embed the cable anchor 2 on the construction platform can reduce the construction difficulty of the cable anchor 2.

[0053] Further, in this embodiment, in S1, at least two (of course, in other embodiments, only one) are arranged at intervals along the inclined direction of the slope 1 at the predetermined positions of the slope 1. A row of cable anchors 2 (a row of horizontally spaced cable anchors 2, horizontally perpendicular to the inclined direction of the slope 1) is arranged at each predetermined position. The slope concrete below, at and above each row of cable anchors 2 is constructed in the manner of S3 to S6 until the construction of the entire slope concrete is completed, as Figure 2As shown in the figure. It should be noted that in this embodiment, the interval between the anchor cables 2 in each horizontal row on the slope 1 is greater than the overall length of the sliding formwork 5 and the downward-turning movable formwork 6 in the inclined direction of the slope 1 (of course, in other embodiments, there may also be an interval between two horizontal rows of anchor cables 2 on the slope 1 that is less than the length of the downward-turning movable formwork 6 in the inclined direction of the slope 1. In this case, when the sliding formwork 5 passes through these two horizontal rows of anchor cables 2, it needs to cross these two horizontal rows of anchor cables 2 before turning down the movable formwork 6. After the movable formwork 6 is turned down, it forms a mold for the slope part where these two horizontal rows of anchor cables 2 are located). The number of cable-passing grooves 61 on the movable formwork 6 is the same as the number of anchor cables 2 in one horizontal row of anchor cables 2. After the movable formwork 6 is turned down, one horizontal row of anchor cables 2 can pass through each cable-passing groove 61 in one-to-one correspondence. It can be understood that the sliding formwork 5 moves upward along the inclined direction of the slope 1. Every time the sliding formwork 5 encounters a row of anchor cables 2, it pauses once, crosses that row of anchor cables 2 once, and the movable formwork 6 moves to form a mold at the position where that row of anchor cables 2 is located once. The concrete is poured during the movement of the sliding formwork 5 (except for the initial stage of each movement of the sliding formwork 5).

[0054] Further, in this embodiment, in S3, the set distance is 0.1 - 0.5 m. Preferably, the set distance is 0.4 m. The maximum value of the set distance does not exceed the width of the movable formwork 6 (that is, does not exceed the length of the downward-turned movable formwork 6 in the inclined direction of the slope 1).

[0055] Further, in this embodiment, after the slope concrete construction at the anchor cable 2 is completed, a cushion block 21 is installed on the anchor cable 2 to make the cushion block 21 abut against the slope concrete. This improves the strength of the contact position between the anchor cable 2 and the slope concrete.

[0056] Embodiment 2:

[0057] Figures 3 to 5 An embodiment of the anchor cable concrete slope protection construction formwork device of the present invention is shown. The anchor cable concrete slope protection construction formwork device of this embodiment is used to implement the anchor cable concrete slope protection construction method of Embodiment 1, and includes a sliding formwork 5 and a movable formwork 6. The movable formwork 6 is flip - set on the lower side of the sliding formwork 5. An expansion and contraction member 7 is provided between the movable formwork 6 and the sliding formwork 5. The movable formwork 6 is provided with cable - passing grooves 61 for the anchor cables 2 to pass through. After the sliding formwork 5 crosses the anchor cable 2, the expansion and contraction member 7 elongates to turn down the movable formwork 6 to form a mold at the position where the anchor cable 2 is located. The structure is simple and the operation is convenient, and it can implement the anchor cable concrete slope protection construction method of Embodiment 1.

[0058] Further, in this embodiment, the cable threading grooves 61 are arranged at intervals along the length direction of the movable formwork 6. The number of cable threading grooves 61 on the movable formwork 6 is the same as the number of cables 2 in a horizontal row of cables 2. After the movable formwork 6 is turned down, the cables 2 in a horizontal row can pass through the respective cable threading grooves 61 in one-to-one correspondence. Specifically, the upper side of the movable formwork 6 is hinged to the sliding formwork 5, and the cable threading grooves 61 penetrate to the lower side of the movable formwork 6 to facilitate the passing of the cables 2. Preferably, the movable formwork 6 and the sliding formwork 5 are detachably hinged, and the two ends of the telescopic member 7 are respectively detachably hinged to the movable formwork 6 and the sliding formwork 5 to facilitate the disassembly and assembly of the movable formwork 6.

[0059] Further, in this embodiment, the telescopic member 7 is a telescopic cylinder, a telescopic oil cylinder, a telescopic electric cylinder or a mechanical telescopic member.

[0060] Embodiment Three:

[0061] Figure 6 An embodiment of the cable anchor concrete slope protection construction formwork system of the present invention is shown. The cable anchor concrete slope protection construction formwork system of this embodiment includes a lifting mechanism 8, tracks 4 respectively arranged on both sides of the slope protection steel mesh 3, and the cable anchor concrete slope protection construction formwork device of Embodiment Two. The sliding formwork 5 is slidably mounted on the tracks 4 and spans across the slope protection steel mesh 3. The lifting mechanism 8 is arranged at the top of the slope 1 and is connected to the sliding formwork 5. This cable anchor concrete slope protection construction formwork system includes the cable anchor concrete slope protection construction formwork device and has all the advantages of the cable anchor concrete slope protection construction formwork device.

[0062] Further, in this embodiment, the tracks 4 extend along the inclined direction of the slope 1. The lifting mechanism 8 is used to drive the sliding formwork 5 to slide along the tracks 4.

[0063] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the above-disclosed technical content, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A construction method for a cable anchor concrete slope protection, characterized in that, It includes the following steps: S1. During the excavation process of the slope (1), the cable anchor (2) construction is carried out on the formed slope surface, so that the cable anchor (2) is buried and fixed at a predetermined position on the slope (1); S2. Install the slope protection steel mesh (3) on the slope (1), install side formworks and tracks (4) on both sides of the slope protection steel mesh (3) respectively, slide a sliding formwork (5) across the slope protection steel mesh (3) on the track (4), and bend and fix the protruding end of the cable anchor (2) on the slope protection steel mesh (3); S3. The sliding formwork (5) continuously moves upward along the track (4). During the movement of the sliding formwork (5), the slope concrete below the cable anchor (2) is poured. When the sliding formwork (5) moves upward to a set distance from the cable anchor (2), it stops, and when the slope concrete below the cable anchor (2) reaches the set distance from the cable anchor (2), the pouring stops; S4. After the slope concrete below the cable anchor (2) solidifies and meets the standard, the sliding formwork (5) continues to move upward along the track (4) to cross over the cable anchor (2); S5. Release the fixation of the protruding end of the cable anchor (2) and the slope protection steel mesh (3), extend the protruding end of the cable anchor (2) outward, the movable formwork (6) on the sliding formwork (5) is erected at the position where the cable anchor (2) is located, and the cable anchor (2) passes through the cable passing groove (61) of the movable formwork (6); S6. The sliding formwork (5) continuously moves upward along the track (4). During the movement of the sliding formwork (5), the slope concrete above the cable anchor (2) is poured.

2. The construction method of the cable anchor concrete slope protection according to claim 1, wherein: In the above S5, the movable formwork (6) on the sliding formwork (5) first turns down to be parallel to the slope (1), and then moves downward to be erected at the position where the cable anchor (2) is located.

3. The construction method of the anchor cable concrete slope protection according to claim 1, characterized in that: In the above S1, the cable anchor (2) on the slope (1) is buried and fixed by drilling, inserting the cable and grouting.

4. The construction method of the cable anchor concrete slope protection according to claim 3, characterized in that: Before the cable anchor (2) is buried and fixed, a construction platform is excavated below the predetermined position on the slope (1).

5. The construction method of the cable anchor concrete slope protection according to claim 1, characterized in that: In the above S1, at least two predetermined positions are arranged at intervals along the inclined direction of the slope (1). One row of cable anchors (2) is arranged at each predetermined position. The slope concrete below, at and above each row of cable anchors (2) is constructed in the manner of S3 to S6 until the construction of the entire slope concrete is completed.

6. The construction method of the anchor cable concrete slope protection according to any one of claims 1 to 5, characterized in that: In the above S3, the set distance is 0.1 - 0.5 m.

7. The construction method of the cable anchor concrete slope protection according to any one of claims 1 to 5, characterized in that: After the construction of the slope concrete at the position of the cable anchor (2) is completed, a pad seat (21) is installed on the cable anchor (2) so that the pad seat (21) abuts tightly against the slope concrete.

8. An anchor cable concrete slope protection construction formwork device, characterized in that: A cable anchor concrete slope protection construction method for implementing any one of claims 1 to 7 includes a sliding formwork (5) and a movable formwork (6). The movable formwork (6) is reversibly arranged on the lower side of the sliding formwork (5). An expansion component (7) is arranged between the movable formwork (6) and the sliding formwork (5). The movable formwork (6) is provided with a cable passing groove (61) for the cable anchor (2) to pass through.

9. The construction formwork device for cable anchor concrete slope protection according to claim 8, characterized in that: The expansion component (7) is an expansion cylinder, an expansion oil cylinder, an expansion electric cylinder or a mechanical expansion component.

10. A construction formwork system for cable anchor concrete slope protection, characterized in that: It includes a lifting mechanism (8), tracks (4) respectively arranged on both sides of the slope protection steel mesh (3), and the cable anchor concrete slope protection construction formwork device according to claim 8 or 9. The sliding formwork (5) is slidably mounted on the tracks (4) and straddles the slope protection steel mesh (3). The lifting mechanism (8) is arranged at the top of the slope (1) and is connected to the sliding formwork (5).

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