Rising pouring construction method of rock-fill concrete and rock-fill concrete

Abstract

The invention relates to a rise pouring construction method of rock-fill concrete and the rock-fill concrete. The ascending layer pouring construction method of the rock-fill concrete comprises the following steps that cantilever formworks are installed on the side face of a pouring bin number in a surrounding mode; a first positioning cone is pre-buried in the pouring warehouse number; the particle sizes of the block stones are screened according to the volumes of the pouring bin numbers, and the screened block stones are conveyed into the pouring bin numbers; dimension stone stacking is conducted in the pouring bin number, and a first dimension stone layer, a second dimension stone layer and a third dimension stone layer are sequentially stacked in the pouring bin number from bottom to top; self-compacting concrete pouring is conducted in a partitioned pouring mode; and a plurality of concrete discharging points are arranged in the pouring subareas to pump the self-compacting concrete into the pouring bins, so that the concrete is synchronously poured and ascended. The ascending layer pouring construction method of the rock-fill concrete and the rock-fill concrete have the advantages of being high in construction efficiency and high in quality.

Description

Technical Field

[0001] The present application relates to the technical field of concrete construction, and in particular to a layer-raising pouring construction method of rockfill concrete and rockfill concrete. Background Art

[0002] Rockfill concrete is a new type of large-volume concrete construction technology. This technology utilizes the high fluidity and permeability of self-compacting concrete to form a rockfill body by using blocks of stone, and then randomly filling the rockfill body with self-compacting concrete to form rockfill concrete.

[0003] In rockfill concrete construction, the rise height refers to the vertical height from the lower construction surface to the upper construction surface during each concrete pour. This rise height is a critical parameter in the rockfill concrete construction process, directly impacting construction efficiency and the quality of the final structure. After the rockfill is stacked to the rise height, self-compacting concrete is poured. Its weight flows through the rockfill, filling the voids and forming a dense structure. Currently, this rise height significantly limits construction progress and quality, resulting in low efficiency and difficulty improving quality. Summary of the Invention

[0004] Based on this, it is necessary to provide a layer-raising pouring construction method of rock-fill concrete and rock-fill concrete to address the problems of low construction efficiency and difficulty in improving quality of rock-fill concrete.

[0005] The present invention provides a construction method for pouring rockfill concrete in ascending layers, comprising the following steps:

[0006] Enclose and install the cantilever formwork on the side of the pouring bin;

[0007] Pre-buried the first positioning cone in the casting bin;

[0008] Screen the particle size of the blocks according to the volume of the casting bin, and transport the screened blocks to the casting bin;

[0009] Stacking the stones in the casting bin number, stacking the first stone layer, the second stone layer and the third stone layer in order from bottom to top, wherein the first stone layer and the third stone layer are both formed by stacking the first stones, and the second stone layer is formed by stacking the second stones, and the diameter of the first stone is smaller than the diameter of the second stone;

[0010] Use the partition pouring method to pour the self-compacting concrete into the pouring bin number;

[0011] Arrange multiple concrete unloading points in the pouring area to pump the self-compacting concrete into the pouring bin, so that the concrete is poured and raised synchronously.

[0012] In one embodiment, in the step of installing the cantilever formwork, the following steps are further specifically included:

[0013] Check the safety of the lifting tackle of the crane;

[0014] Lift the cantilever formwork to the predetermined position by the crane;

[0015] Manually fix and install the cantilever formwork.

[0016] In one embodiment, in the step of manually fixing and installing the cantilever formwork, the following steps are further specifically included:

[0017] Connect the exposed part of the second positioning cone of the lower-layer concrete with the back support of the cantilever formwork through fasteners;

[0018] Reinforce and connect the cantilever formwork with the lower-layer concrete through auxiliary steel bars.

[0019] In one embodiment, before the step of piling up the riprap in the pouring bay number, the following steps are further included:

[0020] Use the second riprap to pile up a retaining bank on the side of the cantilever formwork, and the inner cavity enclosed by the retaining bank is used for normal rock piling;

[0021] During the piling process, check the stability of the retaining bank synchronously. If it is found that the riprap slides, it needs to be adjusted in time.

[0022] In one embodiment, the side of the retaining bank close to the cantilever formwork slopes naturally during piling, so that there is a gap between the retaining bank and the cantilever formwork.

[0023] In one embodiment, in the step of piling up the riprap in the pouring bay number, the following steps are specifically included:

[0024] Transport the riprap to the pouring bay number by a dump truck;

[0025] Use a hydraulic backhoe in cooperation with a loader to pile up the second riprap on the side of the pouring bay number close to the cantilever formwork, so that the second riprap encloses to form a retaining bank.

[0026] In one embodiment, in the step of piling up the riprap in the pouring bay number, the following steps are specifically included:

[0027] During the process of using the second riprap to pile up the retaining bank, synchronously use a stone grabber, a hydraulic backhoe and a loader to pile up the first layer of the first riprap at the inner bottom layer enclosed by the retaining bank;

[0028] After the first layer of the first riprap is piled up, use a hydraulic backhoe in cooperation with a loader to pile up the second layer of the second riprap at the inner middle layer enclosed by the retaining bank;

[0029] After the second layer of stones is stacked, use a stone grabber, a hydraulic backhoe, and a loader to stack the third layer of stones on the top layer inside the enclosure formed by the retaining dam with the first layer of stones.

[0030] In one embodiment, in the step of pouring concrete, the following steps are further included:

[0031] Divide a single pouring bin number into multiple pouring sub-areas, where the length and width of each pouring sub-area do not exceed 20m;

[0032] Use a concrete mixer truck in cooperation with a concrete pump to pump self-compacting concrete to the concrete discharging point for pouring.

[0033] In one embodiment, after the step of installing the cantilever formwork, the following steps are further included: filling the gaps between the cantilever formworks with sponge strips or rubber strips for sealing.

[0034] [[ID=Q16]]The present invention also provides a rockfill concrete, which is constructed using the lift pouring construction method of the rockfill concrete in the above-mentioned embodiment, including:

[0035] A retaining dam, which is enclosed on the side of the pouring bin number, and the retaining dam has a slope on the side close to the cantilever formwork;

[0036] A rockfill body, which is arranged in the enclosed space of the retaining dam. The rockfill body includes a first layer of stones, a second layer of stones, and a third layer of stones. The first layer of stones is arranged at the bottom layer, the second layer of stones is arranged at the middle layer, and the third layer of stones is arranged at the top layer;

[0037] And self-compacting concrete, which is arranged in the voids of the pouring bin number.

[0038] For the above-mentioned lift pouring construction method of rockfill concrete and the rockfill concrete, the pouring formwork is assembled by using cantilever formwork to enclose the pouring bin number to be poured. Then, stack the block stones in the pouring bin number, and the stacked rockfill body is divided into three layers from bottom to top, namely the first layer of stones, the second layer of stones, and the third layer of stones from the bottom layer to the top layer. In this embodiment, by using the cantilever formwork as the pouring formwork, it can not only meet the conditions of large lift pouring of rockfill concrete, but also reduce the area occupied by the auxiliary steel bars, greatly improve the rockfill rate, and the method of stacking the first layer of stones with a smaller diameter at the bottom layer and the top layer not only increases the rockfill rate, but also increases the contact area between each pouring bin number, improving the pouring quality of the interlayer joint part, so as to increase the lift height of the construction, and has the advantages of high construction efficiency and high quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1Flow chart of the layer-by-layer pouring construction method of the rockfill concrete described in the embodiments of the present application.

[0040] Figure 2 Schematic diagram of the installation of the cantilever formwork of the rockfill concrete described in the embodiments of the present application.

[0041] Figure 3 Schematic diagram of the structure of the rockfill concrete described in the embodiments of the present application.

[0042] Figure 4 Schematic diagram of the construction of the rockfill body of the rockfill concrete described in an embodiment of the present application.

[0043] Figure 5 Schematic diagram of the construction of the rockfill body of the rockfill concrete described in another embodiment of the present application.

[0044] Figure 6 Schematic diagram of the structure of the rockfill body of the rockfill concrete described in an embodiment of the present application.

[0045] Figure 7 Schematic diagram of the pouring construction of the rockfill concrete described in an embodiment of the present application.

[0046] Reference numerals in the drawings:

[0047] 10. Rockfill concrete; 10A. Pouring bin number;

[0048] 20. Cantilever formwork; 21. First positioning cone; 22. Auxiliary reinforcement; 23. Formwork panel; 24. Operation platform;

[0049] 30. Lower layer concrete; 31. Second positioning cone;

[0050] 41. Crane; 42. Dump truck; 43. Hydraulic backhoe; 44. Stone grabber; 45. Loader; 46. Concrete mixer truck; 47. Concrete pump;

[0051] 100. Retaining sill;

[0052] 200. Rockfill body; 210. First layer of rock blocks; 220. Second layer of rock blocks; 230. Third layer of rock blocks;

[0053] 300. Self-compacting concrete; 300A. Pouring area; 300B. Concrete placing point. Detailed implementation manners

[0054] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0055] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0056] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0057] In the present application, unless otherwise clearly specified and limited, if terms such as "install", "connect", "join", "fix", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0058] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0059] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0060] See Figures 1 to 7 , showing a flow chart and a construction drawing of a layer-raising pouring construction method of rock-fill concrete in one embodiment of the present application, the layer-raising pouring construction method of rock-fill concrete is used to construct rock-fill concrete 10, and includes the following steps:

[0061] Step S100: The cantilever formwork 20 is enclosed and installed on the side of the pouring chamber 10A. The pouring chamber 10A is a construction unit with a certain spatial range into which the concrete pouring area is divided.

[0062] Step S200: pre-burying the first positioning cone 21 in the casting bin number 10A.

[0063] Step S300: Screening the particle size of the blocks according to the volume of the casting bin No. 10A, and transporting the screened blocks to the casting bin No. 10A.

[0064] Step S400: Stacking stones in casting bin No. 10A, stacking the first stone layer 210, the second stone layer 220 and the third stone layer 230 in order from bottom to top in casting bin No. 10A, wherein the first stone layer 210 and the third stone layer 230 are both formed by stacking the first stones, and the second stone layer 220 is formed by stacking the second stones, and the diameter of the first stone is smaller than the diameter of the second stone.

[0065] Step S500: pouring the self-compacting concrete 300 into the pouring bin No. 10A by adopting a zone pouring method.

[0066] Step S600: Arrange a plurality of concrete placing points 300B within the pouring zone 300A, and pump the self-compacting concrete 300 into the pouring bin No. 10A, so that the concrete is poured and rises synchronously.

[0067] For the lifting layer pouring construction method of the rockfill concrete described in the embodiment of the present application, the formwork for pouring is enclosed and assembled by using the cantilever formwork 20, so as to enclose the pouring bin No. 10A to be poured. Then, the riprap is stacked in the pouring bin No. 10A, and the stacked rockfill body 200 is divided into three layers from bottom to top, which are the first riprap layer 210, the second riprap layer 220 and the third riprap layer 230 in sequence from bottom to top. Among them, the first riprap layer 210 and the third riprap layer 230 are stacked with first riprap with a smaller diameter, and the second riprap layer 220 is stacked with second riprap with a larger diameter.

[0068] For the lifting layer pouring construction method of the rockfill concrete described in the embodiment of the present application, by using the cantilever formwork 20, it can not only meet the pouring conditions of the large lifting layer of the rockfill concrete 10, so as to increase the lifting height of the construction, but also reduce the area occupied by the auxiliary reinforcement 22, greatly improving the rockfill rate. Moreover, the way of stacking the first riprap at the bottom and top layers of the pouring bin No. 10A and the second riprap in the middle layer not only increases the rockfill rate, but also increases the contact area between each pouring bin, thereby improving the pouring quality of the interlayer joint part.

[0069] Furthermore, as Figure 7 shown, by arranging a plurality of concrete placing points 300B in the pouring zone 300A for simultaneous placing, this method can reduce the single-bin pouring area, improve the placing strength of the self-compacting concrete 300, and enable the self-compacting concrete 300 to quickly fill into the gaps of the rockfill body 200, so as to achieve the purpose of large lifting layer pouring of the self-compacting concrete.

[0070] Compared with the traditional lifting height of the rockfill concrete of 1.5m - 2m in the embodiment of the present application, a major breakthrough has been made in the lifting height, providing a clear construction direction for the large lifting layer pouring construction of the rockfill concrete 10, greatly improving the pouring progress of the project, having strong application value, and having the advantages of high construction efficiency and high quality.

[0071] In an exemplary embodiment, the size of the first riprap is 20mm - 40mm, and the first riprap is used to form the first riprap layer 210 at the bottom layer and the third riprap layer 230 at the top layer of the rockfill body 200 to reduce the concrete flow resistance. The size of the second riprap is 60mm - 100mm, and the second riprap is used to form the second riprap layer 220 in the middle layer of the rockfill body 200 as a skeleton structure to save the concrete consumption.

[0072] As Figure 2As shown, in some embodiments, in the step of installing the cantilever formwork 20, the following steps are further included specifically:

[0073] Check the safety of the lifting tackle of the crane 41;

[0074] Lift the cantilever formwork 20 to the predetermined position by the crane 41;

[0075] Manually fix and install the cantilever formwork 20.

[0076] In this embodiment, the cantilever formwork 20 is hoisted by the crane 41, and it is necessary to check the safety of the lifting tackle. When the cantilever formwork 20 is hoisted, it needs to be slowly positioned under the command of a special person to avoid colliding with the steel bars or positioning cones, ensuring safety and efficiency during the installation process.

[0077] In an alternative embodiment, after the manual installation is completed, the verticality of the cantilever formwork 20 is detected to ensure that the deviation of the verticality ≤ 3 mm / m, and the anchoring strength of the positioning cone is tested through a preloading test, thereby improving the pouring quality.

[0078] In an alternative embodiment, as Figure 2 and Figure 3 shown, in the step of manually fixing and installing the cantilever formwork 20, the following steps are further included specifically:

[0079] Connect the exposed part of the second positioning cone 31 of the lower-layer concrete 30 with the back bracket of the cantilever formwork 20 through fasteners;

[0080] Reinforce and connect the cantilever formwork 20 with the lower-layer concrete 30 through the auxiliary steel bars 22.

[0081] For traditional floor formwork, a full hall support or inclined strut needs to be set at the bottom of the pouring bay 10A, but block stones need to be stacked at the bottom of the pouring bay 10A, and the support cannot be installed. In the embodiment of the present application, the cantilever formwork 20 is cantilever-supported by the second positioning cone 31 embedded in the lower-layer concrete 30, and only the auxiliary steel bars 22 with a small occupied area are used for connection inside the pouring bay 10A, avoiding occupying the rock stacking space at the bottom of the pouring bay 10A and significantly increasing the pouring height.

[0082] In an alternative embodiment, as Figure 6 shown, before the step of stacking block stones in the pouring bay 10A, the following steps are further included:

[0083] Use the second block stone to stack and form a retaining dam 100 on the side of the cantilever formwork 20, and the inner cavity formed by the surrounding of the retaining dam 100 is used for normal rock stacking;

[0084] During the stacking process, check the stability of the retaining dam 100 synchronously. If it is found that the block stones slide, they need to be adjusted in time.

[0085] In the embodiment of the present application, a retaining sill 100 is arranged on one side of the cantilever formwork 20 of the pouring bin number 10A, and the retaining sill 100 is formed by piling up the second crushed stones. The retaining sill 100 can effectively ensure the stability of the large lift rockfill body 200 and create conditions for the large lift construction of the roller compacted concrete 10.

[0086] Further, as Figure 6 shown, when the retaining sill 100 is piled up, the side close to the cantilever formwork 20 has a natural slope, so that there is a gap between the retaining sill 100 and the cantilever formwork 20. By making the side of the retaining sill 100 close to the cantilever formwork 20 have a natural slope, the impact of the lateral pressure of the rockfill body 200 on the formwork is reduced, the stability during the pouring of the roller compacted concrete 10 is improved, and thus the pouring quality is improved.

[0087] In an exemplary embodiment, the crushed stones of the retaining sill 100 shall be selected as hard stones with a particle size ≥ 80 mm, and the crushed stones of the retaining sill 100 are stacked with staggered joints to form a stable structure.

[0088] In an alternative embodiment, as Figure 4 and Figure 5 shown, in the step of piling up the crushed stones in the pouring bin number 10A, the following steps are specifically included:

[0089] Use a dump truck 42 to transport the crushed stones into the pouring bin number 10A;

[0090] Use a hydraulic backhoe 43 in cooperation with a loader 45 to pile up the second crushed stones on the side of the pouring bin number 10A close to the cantilever formwork 20, so that the second crushed stones enclose to form the retaining sill 100.

[0091] In this embodiment, the dump truck 42 is used to transport the crushed stones into the pouring bin number 10A, and then the hydraulic backhoe 43 and the loader 45 are used for construction to stack up the second crushed stones to form an enclosed retaining sill 100 in the pouring bin number 10A. The construction efficiency of the hydraulic backhoe 43 in cooperation with the loader 45 is high.

[0092] In an alternative embodiment, as Figure 4 and Figure 5 shown, in the step of piling up the crushed stones in the pouring bin number 10A, the following steps are further included:

[0093] During the process of using the second crushed stones to pile up the retaining sill 100, simultaneously use a stone grabber 44, a hydraulic backhoe 43 and a loader 45 to pile up the first crushed stones on the bottom layer of the inner cavity enclosed by the retaining sill 100 to form the first crushed stone layer 210;

[0094] After the piling up of the first crushed stone layer 210 is completed, use the hydraulic backhoe 43 in cooperation with the loader 45 to pile up the second crushed stones in the middle layer of the inner cavity enclosed by the retaining sill 100 to form the second crushed stone layer 220;

[0095] After the stacking of the second stone layer 220 is completed, a stone grabber 44, a hydraulic backhoe 43 and a loader 45 are used to stack the third stone layer 230 on the top layer of the inner cavity formed by the retaining sill 100 enclosing the first stone.

[0096] In this embodiment, a stone grabber 44, a hydraulic backhoe 43 and a loader 45 are used to construct the rockfill body 200. The stone grabber 44 grabs the second stone to the middle of the pouring bin number 10A. The hydraulic backhoe 43 levels and adjusts the gaps. The first stone is paved by the loader 45 with manual assistance for spreading. First, the first stone is stacked into the first stone layer 210 at the bottom layer, then the second stone is stacked into the second stone layer 220 at the middle layer, and finally the first stone is stacked into the third stone layer 230 at the top layer, so that the rockfill body 200 forms a three-layer rockfill structure. The first stone with a smaller diameter is used to improve the fluidity of the edge concrete, and the second stone with a larger diameter is used to reduce the filling cost in the middle, while forming a stable skeleton.

[0097] In an alternative embodiment, as Figure 7 shown, in the step of pouring concrete, the following steps are specifically included:

[0098] The single pouring bin number 10A is divided into a plurality of pouring sub-areas 300A, wherein the length and width of each pouring sub-area 300A do not exceed 20 m;

[0099] A concrete mixer truck 46 is used in cooperation with a concrete pump machine 47 to pump the self-compacting concrete 300 to the concrete placing point 300B for pouring.

[0100] In this embodiment, by dividing the pouring bin number 10A into a plurality of pouring sub-areas 300A, it is avoided that the concrete pouring range is too large, resulting in uneven flow or cold joints, and the self-compacting performance is ensured to be fully exerted. Through the synchronous pumping of a plurality of concrete mixer trucks 46 in cooperation with the concrete pump machine 47 to the concrete placing point 300B, the self-compacting concrete 300 rises evenly in the pouring bin number 10A, avoiding the displacement of the stones or the segregation of the concrete caused by too large a height difference, and having the advantage of good pouring quality.

[0101] In an alternative embodiment, after the step of installing the cantilever formwork 20, the following steps are further included:

[0102] Sponge strips or rubber strips are filled in the gaps between the cantilever formworks 20 for sealing.

[0103] In this embodiment, by arranging sponge strips or rubber strips in the gaps between the cantilever formworks 20 for sealing, the leakage of the self-compacting concrete 300 through the gaps of the cantilever formworks 20 is prevented.

[0104] On the other hand, the present application also provides a rockfill concrete 10, which is constructed by using the construction method for lifting-layer pouring of the rockfill concrete 10 according to any one of the above embodiments, as Figure 3 , Figure 6 and Figure 7 shown, including a retaining sill 100, a rockfill body 200, and self-compacting concrete 300.

[0105] The retaining sill 100 is arranged around the side of the pouring bin number 10A, and the retaining sill 100 has a slope on the side close to the cantilever formwork 20. The rockfill body 200 is arranged in the enclosed space of the retaining sill 100. The rockfill body 200 includes a first layer of crushed stones 210, a second layer of crushed stones 220, and a third layer of crushed stones 230. The first layer of crushed stones 210 is arranged at the bottom layer, the second layer of crushed stones 220 is arranged at the middle layer, and the third layer of crushed stones 230 is arranged at the top layer. The self-compacting concrete 300 is arranged in the voids of the pouring bin number 10A.

[0106] Among them, both the first layer of crushed stones 210 and the third layer of crushed stones 230 are formed by piling up the first crushed stones, the second layer of crushed stones 220 is formed by piling up the second crushed stones, and the diameter of the first crushed stones is smaller than that of the second crushed stones.

[0107] It should be noted that during the construction process, a plurality of cantilever formworks 20 need to be arranged around the outer side of the pouring bin number 10A. The back support of the cantilever formwork 20 is fixedly connected to the exposed part of the second positioning cone 31 of the lower-layer concrete 30 by bolts to ensure reliable force transmission. And the cantilever formwork 20 is connected to the lower-layer concrete 30 through auxiliary reinforcement bars 22.

[0108] In the construction method for lifting-layer pouring of the rockfill concrete according to the embodiment of the present application, by using the cantilever formwork 20, it can not only meet the pouring conditions of the large lifting layer of the rockfill concrete 10, so as to increase the lifting height of the construction, but also reduce the area occupied by the auxiliary reinforcement bars 22, greatly improving the rockfill ratio. Moreover, the bottom layer and the top layer of the pouring bin number 10A use the method of stacking the first crushed stones and the middle layer stacks the second crushed stones, which not only increases the rockfill ratio but also increases the contact area between each pouring bin number, thereby improving the pouring quality of the interlayer joint part. By naturally sloping the side of the retaining sill 100 close to the cantilever formwork 20, the impact of the lateral pressure of the rockfill body 200 on the formwork is reduced, and the stability during the pouring of the rockfill concrete 10 is improved, thereby improving the pouring quality.

[0109] Furthermore, by arranging a plurality of concrete placing points 300B in the pouring area 300A to place materials simultaneously, this method can reduce the pouring area of a single bin, improve the placing intensity of the self-compacting concrete 300, and enable the self-compacting concrete 300 to quickly fill into the gaps of the rockfill body 200 to achieve the purpose of large lifting layer pouring of the self-compacting concrete.

[0110] In the embodiment of the present application, compared with the traditional lifted layer height of 1.5 m to 2 m for the rockfill concrete, a significant breakthrough has been made in the lifted layer height, providing a clear construction direction for the large-lifted layer pouring construction of the rockfill concrete 10, greatly improving the pouring progress of the project, having strong application value, and having the advantages of high construction efficiency and high quality.

[0111] In an exemplary embodiment, the cantilever formwork 20 includes a formwork panel 23, a support mechanism, and an operating platform 24. The support mechanism includes a first positioning cone 21, a second positioning cone 31, and auxiliary reinforcement 22. The first positioning cone 21 is arranged in the current pouring bin number 10A, the second positioning cone 31 is arranged in the lower layer of concrete 30, the bottom of the formwork panel 23 is connected to the second positioning cone 31 through fasteners, and then the auxiliary reinforcement 22 fixes the formwork panel 23 in the pouring bin number 10A. The operating platform 24 is connected to the side of the formwork panel 23 away from the pouring bin number 10A, and the operating platform 24 provides a working space for construction workers.

[0112] In an exemplary embodiment, the specification of the formwork panel 23 of the cantilever formwork 20 is 3.0 m × 3.4 m or 3.0 m × 3.6 m.

[0113] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0114] The above-described embodiments only represent several implementation manners of the present application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A construction method for layer-by-layer pouring of rockfill concrete, characterized in that, It includes the following steps: Enclose and install the cantilever formwork (20) on the side of the pouring bin number (10A); Pre-bury the first positioning cone (21) in the pouring bin number (10A); Screen the particle size of the riprap according to the volume of the pouring bin number (10A), and transport the screened riprap into the pouring bin number (10A); Stack the riprap in the pouring bin number (10A), and stack the first layer of riprap (210), the second layer of riprap (220), and the third layer of riprap (230) in the pouring bin number (10A) from bottom to top. Among them, the first layer of riprap (210) and the third layer of riprap (230) are both formed by stacking the first riprap, the second layer of riprap (220) is formed by stacking the second riprap, and the diameter of the first riprap is smaller than that of the second riprap; Pour the self-compacting concrete (300) into the pouring bin number (10A) by means of sectional pouring; Arrange a plurality of concrete placing points (300B) in the pouring section (300A) to pump the self-compacting concrete (300) into the pouring bin number (10A) so that the concrete is poured and rises synchronously.

2. The construction method for layer-by-layer casting of rockfill concrete according to claim 1, characterized in that, In the step of installing the cantilever formwork (20), it specifically further includes the following steps: Check the safety of the lifting appliance of the crane (41); Lift the cantilever formwork (20) to the predetermined position by the crane (41); Manually fix and install the cantilever formwork (20).

3. The lift pouring construction method of the rockfill concrete according to claim 2, characterized in that, In the step of manually fixing and installing the cantilever formwork (20), it specifically further includes the following steps: Connect the exposed part of the second positioning cone (31) of the lower-layer concrete (30) with the back support of the cantilever formwork (20) through fasteners; Reinforce and connect the cantilever formwork (20) with the lower-layer concrete (30) through auxiliary reinforcement bars (22).

4. The construction method for layer-by-layer casting of rockfill concrete according to claim 1, characterized in that Before the step of stacking the riprap in the pouring bin number (10A), it further includes the following steps: Stack the second riprap on the side of the cantilever formwork (20) to form a retaining dam (100), and the inner cavity formed by enclosing the retaining dam (100) is used for normal stone stacking; Check the stability of the retaining dam (100) synchronously during the stacking process, and adjust it in time if it is found that the riprap slides.

5. The construction method for lifting and pouring of riprap concrete according to claim 4, characterized in that: The side of the retaining dam (100) close to the cantilever formwork (20) is naturally sloped during stacking, so that there is a gap between the retaining dam (100) and the cantilever formwork (20).

6. The construction method for layer-by-layer casting of rockfill concrete according to claim 4, characterized in that, In the step of stacking the riprap in the pouring bin number (10A), it specifically includes the following steps: Transport the riprap into the pouring bin number (10A) by means of a dump truck (42); Use a hydraulic backhoe (43) in cooperation with a loader (45) to stack the second riprap on the side of the pouring bin number (10A) close to the cantilever formwork (20) so that the second riprap encloses to form a retaining dam (100).

7. The construction method for layer-by-layer casting of rockfill concrete according to claim 6, characterized in that, In the step of stacking the riprap in the pouring bin number (10A), it further includes the following steps: During the process of using the second riprap to stack the retaining dam (100), synchronously use a stone grabber (44), a hydraulic backhoe (43) and a loader (45) to stack the first riprap on the bottom layer of the inner cavity formed by enclosing the retaining dam (100) to form the first layer of riprap (210); After the first stone layer (210) is stacked, the hydraulic backhoe (43) cooperates with the loader (45) to stack the second stone layer (220) in the middle layer of the inner cavity formed by the retaining wall (100); After the second stone layer (220) is stacked, the first stone is stacked on the top of the inner cavity formed by the retaining wall (100) using a stone grabber (44), a hydraulic backhoe (43) and a loader (45).

8. The layer-by-layer casting construction method of the rockfill concrete according to claim 1, characterized in that The step of pouring concrete specifically includes the following steps: Divide a single casting bin number (10A) into multiple casting zones (300A), where the length and width of each casting zone (300A) do not exceed 20m; The self-compacting concrete (300) is pumped to the concrete unloading point (300B) by using a concrete tank truck (46) in conjunction with a concrete pump (47) for pouring.

9. The construction method for layer-by-layer casting of rockfill concrete according to claim 1, characterized in that, After the step of installing the cantilever formwork (20), the following steps are also included: The gaps between the cantilever templates (20) are filled with sponge strips or rubber strips for sealing.

10. A rockfill concrete is constructed by using the construction method for layer-by-layer casting of the rockfill concrete according to any one of claims 1 to 9, characterized in that, include: A retaining wall (100), the retaining wall (100) is enclosed and arranged on the side of the casting bin number (10A), and the retaining wall (100) is provided with a slope on a side close to the cantilever formwork (20); A rockfill body (200), the rockfill body (200) being arranged in the enclosed space of the retaining wall (100), the rockfill body (200) comprising a first rock layer (210), a second rock layer (220), and a third rock layer (230), the first rock layer (210) being arranged at the bottom layer, the second rock layer (220) being arranged at the middle layer, and the third rock layer (230) being arranged at the top layer; as well as Self-compacting concrete (300), the self-compacting concrete (300) is arranged in the gap of the casting bin number (10A).

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