A protection device for construction of an asphalt concrete core wall and a method of use

Abstract

The application provides a protective device for asphalt concrete core wall construction and a use method thereof, which comprises two rows of fixed steel drills and a covering canvas; the lower section of the drill rod of each fixed steel drill is anchored into the transition material outside the asphalt concrete core wall, and the upper section of the drill rod is fixed with ear rings at equal intervals along the axial direction; the side edges of the covering canvas are provided with two rows of hole positions, the two rows of ear rings of the two rows of fixed steel drills are fixed on the two rows of hole positions, a row of air outlet holes are formed in the covering canvas, a layer of inflatable film with inflation holes is covered on the top of the covering canvas, and the periphery of the inflatable film is integrated with the covering canvas to form an air bag structure. The beneficial effects of the application are as follows: the fixed steel drills and the covering canvas are connected and fixed firmly through the two rows of hooks, the switching of the windproof, rainproof, dustproof and sunshade functions can be completed, and the influence of environmental factors is reduced. After the air bag structure is inflated and expanded, an arched structure can be formed on the top of the covering canvas, water accumulation is avoided, airflow is sprayed out of the air outlet holes, and the air flow speed of the asphalt surface layer is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction equipment, in particular to a protective device for asphalt concrete core wall construction and a use method thereof. Background Art

[0002] Asphalt concrete core walls are currently widely used as an anti-seepage system for earth-rockfill dams in water conservancy and hydropower projects, and asphalt concrete core dams have become one of the most important dam types in these projects. Domestic asphalt concrete core wall anti-seepage systems are primarily used when traditional anti-seepage systems such as concrete slabs, clay, and gravel core walls cannot be used or are too expensive to implement, due to natural conditions such as heavy rain, low temperatures, a lack of suitable earth and rock materials, and large dam foundation settlements. The ability of asphalt concrete core wall anti-seepage systems to function under these conditions demonstrates their superiority and adaptability.

[0003] During the construction of asphalt concrete core walls, the quality control methods of layered and segmented, staggered paving, and rolling along the seams are often used. The joints are easily affected by environmental factors and human factors during construction and become quality weaknesses. Specifically, in the current asphalt concrete construction, canvas covering is usually used as a protective measure, and steel plates or stones are used to press the corners to prevent them from blowing up. The advantage of this protective measure is that it is easy to implement. The disadvantage is that after the canvas covers the asphalt concrete, it affects the heat dissipation of the asphalt concrete. This method is suitable during periods of low temperature and strong winds when insulation is required. However, during periods of high temperature and strong sunshine, this method is not conducive to the heat dissipation of asphalt concrete, and the direct covering has a general rainproof effect. If the rainfall is too heavy, rainwater may also remain in the warehouse and form water accumulation. In addition, when asphalt concrete is spread manually, side formwork is required, and the transition material near the formwork needs to be spread manually. It is very easy for the transition material to contaminate the asphalt surface layer, which increases the workload of treating the asphalt surface layer.

[0004] How to overcome the influence of environmental and human factors on the construction quality of asphalt concrete core wall is the key to the success or failure of asphalt concrete core wall. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problems existing in the above-mentioned background technology and provide a protective device and a method for use of asphalt concrete core wall construction, which can protect against rain, wind and dust during construction, and at the same time avoid the occurrence of transition material contaminating the asphalt surface layer, thereby ensuring construction quality.

[0006] The technical purpose of the present invention is achieved as follows: a protective device for the construction of an asphalt concrete core wall, comprising two rows of fixed steel drills arranged on both sides of the asphalt concrete core wall, and a covering canvas arranged between the two rows of fixed steel drills; the lower section of the drill rod of each fixed steel drill is anchored in the transition material on the outside of the asphalt concrete core wall, and the upper section of the drill rod is fixed with at least three earrings at equal intervals along the axial direction; two rows of holes are provided on each side of the covering canvas, and the two rows of holes are respectively hooked on two rows of earrings of the fixed steel drills on the corresponding side through hooks, and a row of air holes is provided on the covering canvas, and the top of the covering canvas is covered with an inflatable membrane with inflation holes, and the four sides of the inflatable membrane are connected to the covering canvas as a whole to form an airbag structure between the inflatable membrane and the top surface of the covering canvas.

[0007] Preferably, the spacing between the two rows of holes is the same as the spacing between the hooks on the fixed steel bar, and the spacing between the holes in the same row is the same as the spacing between the fixed steel bar.

[0008] Preferably, each hole position is provided with two side-by-side hanging holes.

[0009] Preferably, the top of the drill rod of the fixed steel drill is a drill head for bearing the impact of the tool, and the bottom of the drill rod of the fixed steel drill is provided with a tip.

[0010] The present invention also provides a method of use, using the protective device for asphalt concrete core wall construction, two rows of fixed steel chisels are driven into the transition material layer on both sides of the asphalt concrete core wall to a certain depth, the earrings of the bottom row of fixed steel chisels are pressed against the top surface of the transition material layer, and the same row of fixed steel chisels maintain a certain distance along the length direction of the asphalt concrete core wall. Hooks are used in pairs to hang the holes on both sides of the covering canvas, and then hung into the earrings of the fixed steel chisels. Depending on the application scenario, it is decided whether the position of the hooks needs to be adjusted and the inflation holes need to be inflated.

[0011] As a preferred application scenario for conventional protection, the outer row of holes on the side of the covering canvas are hooked on the earrings in the bottom row of the fixed steel drills, and the inner row of holes on the side are hooked on the earrings in the middle row of the fixed steel drills;

[0012] When the application scenario is windy and rainy, the positions of the hook and the covering canvas are the same as those for conventional protection. At the same time, the inflation hole is connected to the inflation system. The airbag structure between the inflatable membrane and the covering canvas swells after inflation, and the top of the inflatable membrane forms an arc-shaped arched structure with a high middle and low sides.

[0013] The application scenario is when the weather conditions are strong, windless, and sunshade is required. The outer row of holes on the side of the covering canvas are hooked on the earrings in the middle row of the fixed steel rods, and the inner row of holes on the side are hooked on the earrings in the top row of the fixed steel rods. At the same time, the inflation holes are connected to the inflation system, and the air outlet holes of the covering canvas blow out air to accelerate the heat dissipation of the asphalt concrete.

[0014] The application scenario is when manually paving transition materials. The outer row of holes on the side of the covering canvas are hooked on the earrings in the middle row of fixed steel chisels, and the inner row of holes on the side are hooked on the top row of earrings on the fixed steel chisels. At the same time, the inflation holes are connected to the inflation system. The airbag structure between the inflatable membrane and the covering canvas bulges after inflation, and the top of the inflatable membrane forms an arc-shaped arched structure with a high middle and low sides.

[0015] The present invention has the following beneficial effects: the fixing steel bar and the covering canvas are firmly connected by two rows of hooks, and the hook position of the covering canvas can be adjusted to switch between windproof, rainproof, dustproof and sunshade functions, thereby reducing the impact of environmental factors. After the airbag structure is inflated, it can form an arched structure on the top of the covering canvas, allowing rainwater to flow to both sides to avoid water accumulation. The inflation hole can be connected to the inflation system, and air is ejected from the air outlet hole, increasing the air flow speed of the asphalt surface layer and accelerating the cooling of the asphalt concrete. When the side edges of the covering canvas are hooked to the bottom two rows of hooks, the side edges can isolate the asphalt surface layer, preventing transition material from contaminating the asphalt surface layer and reducing the impact of human factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the installation structure diagrams of an embodiment of the present invention.

[0017] Figure 2 This is the second schematic diagram of the installation structure of the embodiment of the present invention.

[0018] Figure 3 This is the third schematic diagram of the installation structure of the embodiment of the present invention.

[0019] Figure 4 This is the fourth schematic diagram of the installation structure of the embodiment of the present invention.

[0020] Figure 5 It is a schematic structural diagram of fixing the steel drill in an embodiment of the present invention.

[0021] Figure 6 2 is a bottom view of the covering canvas in an embodiment of the present invention.

[0022] Figure 7 1 is a top view of the covering canvas in an embodiment of the present invention.

[0023] The figure includes: a fixed steel drill 1, a covering canvas 2, an asphalt concrete core wall 3, a transition material layer 4, a hook 5, an earring 11, a drill rod 12, a drill head 13, a tip 14, a side 21, a hanging hole 22, an inflatable membrane 23, an air outlet 24, and an inflatable hole 25. DETAILED DESCRIPTION

[0024] In order to enable ordinary technicians in this field to more clearly understand the objectives, technical solutions and advantages of the present invention, the present invention is further explained below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the following embodiments.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention 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, they cannot be understood as limitations on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of 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.

[0026] like Figures 1 to 4 As shown, the present invention provides a protective device for asphalt concrete core wall construction, comprising two rows of fixed steel chisels 1 and a covering canvas 2. The two rows of fixed steel chisels 1 are vertically arranged on the left and right sides of the asphalt concrete core wall 3, respectively, and maintain a certain distance from the side 21 of the asphalt concrete core wall 3. Each row of fixed steel chisels 1 is arranged in a straight line along the length direction of the asphalt concrete core wall 3, and a certain distance is maintained between the fixed steel chisels 1 and the fixed steel chisels 1. The covering canvas 2 is arranged between the two rows of fixed steel chisels 1, and the length extension direction of the covering canvas 2 is the same as that of the asphalt concrete core wall 3, and the width of the covering canvas 2 is greater than the distance between the two rows of fixed steel chisels 1.

[0027] Specifically, such as Figure 5 As shown, the drill rod 12 of the fixed steel drill 1 is a steel drill with a diameter of no less than 28 mm and a certain degree of rigidity. It has a drill bit 13 at the top to withstand tool impacts and a tip 14 at the bottom. The tip 14, together with the lower section of the drill rod 12, is vertically anchored into the transition layer 4 outside the asphalt concrete core wall 3. Three earrings 11 are fixed to the upper section of the drill rod 12 at equal intervals along the axial direction. Generally, the earrings 11 of the fixed steel drills 1 on both sides of the asphalt concrete core wall 3 are arranged on the inner side, forming three rows of earrings 11 in the same row of fixed steel drills 1: upper, middle, and lower.

[0028] like Figure 6 、 Figure 7As shown, each side 21 of the covering canvas 2 is provided with two rows of holes, and each hole is provided with two side-by-side hanging holes 22. The spacing between the two rows of holes is the same as the spacing between the earrings 11 on the fixed steel bar 1, and the spacing between the holes in the same row is the same as the spacing between the fixed steel bar 1. The two rows of holes are respectively hooked on two rows of earrings 11 on the fixed steel bar 1 on the corresponding side through hooks 5. The covering canvas 2 is provided with a row of air holes 24, and the top of the covering canvas 2 is covered with an inflatable membrane 23 with inflation holes 25. The four sides of the inflatable membrane 23 are connected to the covering canvas 2 as a whole, thereby forming an airbag structure between the inflatable membrane 23 and the top surface of the covering canvas 2. The inflation holes 25 can be connected to an existing conventional inflation system, such as an air compressor.

[0029] The present invention also provides a method of use, using the above-mentioned protective device for asphalt concrete core wall construction, two rows of fixed steel drills 1 are driven into the transition material layer 4 on both sides of the asphalt concrete core wall 3 to a certain depth, the earrings 11 of the bottom row of fixed steel drills 1 are close to the top surface of the transition material layer 4, and the same row of fixed steel drills 1 maintain a certain distance along the length direction of the asphalt concrete core wall 3, and hooks 5 are used to hang the holes on both sides of the covering canvas 2 in pairs, and then hung in the earrings 11 of the fixed steel drills 1. According to the application scenario, decide whether to adjust the position of the hooks 5 and inflate the inflation holes 25.

[0030] Specifically, depending on different usage situations, the installation methods of the fixing steel bar 1 and the covering canvas 2 are not exactly the same. Figure 1 The figure shows the installation method for conventional protection. The earrings 11 of the bottom row of the fixed steel bar 1 are close to the top surface of the transition material layer 4. The outer row of hanging holes 22 of the side 21 of the covering canvas 2 are hooked on this row of earrings 11 through the hooks 5. The hooks 5 pass through two hanging holes 22. The inner row of hanging holes 22 of the side 21 are hooked on the middle row of earrings 11 through the hooks 5. The protective structure formed in this way covers the asphalt concrete core wall 3 to achieve conventional rainproof, windproof, dustproof and sunshade. Figure 2 The figure shows the installation method for strong winds and rain. The difference from conventional protection is that the inflation hole 25 is connected to the inflation system. After the airbag structure between the inflatable membrane 23 and the covering canvas 2 is inflated, the air intake of the airbag structure is greater than the air output. The top of the inflatable membrane 23 forms an arc-shaped arched structure with a high middle and low sides. Rainwater flows to both sides, which can effectively prevent rainwater accumulation. Figure 3 The figure shows the installation method when sunshade is needed in windless weather with strong sunshine intensity. In order to accelerate the heat dissipation of asphalt concrete and prevent the asphalt concrete from being exposed to the sun, the covering canvas 2 is hooked on the two rows of earrings 11 above the fixed steel bar 1. At the same time, the inflation hole 25 is connected to the inflation system, and the air flow blown out of the air outlet 24 of the covering canvas 2 can accelerate the heat dissipation of the asphalt concrete. Figure 4The figure shows the installation method for manual paving of transition material. The position of the template is determined by measuring and laying out, the template is erected, and after the template is fixed by the template fixing frame, the fixed steel bar 1 is installed in place. The middle row of earrings 11 is flush or basically flush with the upper edge of the template, and the covering canvas 2 is hooked on the two rows of earrings 11 above the fixed steel bar 1. The inflation hole 25 is connected to the inflation system. After the air bag structure between the inflatable membrane 23 and the covering canvas 2 is inflated, the air intake of the air bag structure is greater than the air output. The top of the inflatable membrane 23 forms an arc-shaped arched structure with a high middle and low sides, which prevents the transition material from accumulating on the top of the covering canvas 2 during manual paving. At the same time, the edges of the two side edges 21 of the covering canvas 2 are basically in contact with the template, which can effectively prevent the transition material from entering the asphalt concrete core wall 3 area during manual paving.

[0031] Taking a certain project as an example, the fixed steel bar 1 is made of 28mm diameter and 1100mm long steel bar, with the lower end polished into a pointed tip 14. It is equipped with three earrings 11, spaced 30cm apart and securely welded. Each covering canvas 2 is 1900mm wide and 10m long. Along one side 21 of the canvas 2, a row of paired hanging holes 22, spaced 105cm apart, are arranged 50mm apart. A second row of paired hanging holes 22, spaced 105cm apart, is arranged 350mm from the edge of the canvas. The same arrangement of hanging holes 22 is made on the other side of the canvas 2. The bottom of the canvas 2 has air vents 24 with a diameter of 120mm, spaced 550mm apart. A fixed inflatable membrane 23, 1100mm wide, is placed on top and has a 200mm diameter air hole 25 connected to the inflation system.

[0032] In practice, the asphalt concrete core is 800 mm wide, the transition layer 4 is 4000 mm wide on either side, and the thickness after compaction is 250 mm. A steel drill is placed 100 mm from either side of the asphalt concrete core and driven into the transition layer 4400 mm deep at intervals of 1000 mm along the axis of the asphalt concrete core. Pairs of hooks 5 are placed in the hook holes 22 and then into the earrings 11. The position of the hooks 5 is adjusted according to weather conditions to determine whether inflation is necessary.

[0033] The above description is merely a preferred embodiment of the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A method for using a protective device for asphalt concrete core wall construction, characterized by: The invention comprises two rows of fixed steel drills (1) arranged on both sides of an asphalt concrete core wall (3), and a covering canvas (2) arranged between the two rows of fixed steel drills (1); the lower section of the drill rod (12) of each fixed steel drill (1) is anchored in a transition material layer (4) outside the asphalt concrete core wall (3), and the upper section of the drill rod (12) is fixed with at least three earrings (11) at equal intervals along the axial direction; each side (21) of the covering canvas (2) is provided with two rows of holes, and the two rows of holes are respectively hooked on two rows of earrings (11) of the fixed steel drills (1) on the corresponding side through hooks (5); the covering canvas (2) is provided with a row of air holes (24), and the top of the covering canvas (2) is covered with an inflatable membrane (23) with an air hole (25), and the four sides of the inflatable membrane (23) are connected to the covering canvas (2) as a whole, so as to form an air bag structure between the inflatable membrane (23) and the top surface of the covering canvas (2); According to the application scenario, it is determined whether the position of the hook (5) needs to be adjusted and the inflation hole (25) needs to be inflated; When the application scenario is conventional protection, the outer row of holes of the side (21) of the covering canvas (2) is hooked on the earrings (11) of the bottom row of the fixed steel bar (1) through the hook (5), and the inner row of holes of the side (21) is hooked on the earrings (11) of the middle row of the fixed steel bar (1) through the hook (5); When the application scenario is windy and rainy weather conditions, the positions of the hook (5) and the covering canvas (2) are the same as those in conventional protection. At the same time, the inflation hole (25) is connected to the inflation system, and the air bag structure between the inflation membrane (23) and the covering canvas (2) bulges after inflation, and the top of the inflation membrane (23) forms a curved arched structure with a high middle and low sides; The application scenario is when the sunshine intensity is high, there is no wind, and the weather condition of sunshade is required, the outer row of holes of the side (21) of the covering canvas (2) is hooked on the middle row of earrings (11) of the fixed steel bar (1) through the hook (5), and the inner row of holes of the side (21) is hooked on the uppermost row of earrings (11) of the fixed steel bar (1) through the hook (5), and at the same time, the inflation hole (25) is connected to the inflation system, and the air outlet hole (24) of the covering canvas (2) blows out air flow to accelerate the heat dissipation of the asphalt concrete; The application scenario is when manually paving transition materials, the outer row of holes of the side (21) of the covering canvas (2) is hooked on the middle row of earrings (11) of the fixed steel bar (1) through the hook (5), and the inner row of holes of the side (21) is hooked on the top row of earrings (11) of the fixed steel bar (1) through the hook (5). At the same time, the inflation hole (25) is connected to the inflation system, and the air bag structure between the inflation membrane (23) and the covering canvas (2) bulges after inflation, and the top of the inflation membrane (23) forms an arc-shaped arched structure with a high middle and low sides.

2. The method for using the protective device for asphalt concrete core wall construction according to claim 1, characterized in that: The spacing between the two rows of holes is the same as the spacing between the earrings (11) on the fixed steel drill (1), and the spacing between the holes in the same row is the same as the spacing between the fixed steel drill (1).

3. The method for using the protective device for asphalt concrete core wall construction according to claim 2, characterized in that: Each hole position is provided with two side-by-side hanging holes (22).

4. The method for using the protective device for asphalt concrete core wall construction according to claim 3, characterized in that: The top of the drill rod (12) for fixing the steel drill (1) is a drill head (13) for enduring a blow from a tool, and the bottom of the drill rod (12) for fixing the steel drill (1) is provided with a tip (14).

5. A method for using the protective device for asphalt concrete core wall construction according to any one of claims 1 to 4, characterized in that: Two rows of fixed steel chisels (1) are driven into the transition material layer (4) on both sides of the asphalt concrete core wall (3) to a certain depth, the earrings (11) of the bottom row of fixed steel chisels (1) are close to the top surface of the transition material layer (4), and the fixed steel chisels (1) in the same row are kept at a certain distance along the length direction of the asphalt concrete core wall (3). Hooks (5) are used to hang the holes on both sides of the covering canvas (2) in pairs, and then hung in the earrings (11) of the fixed steel chisels (1).

Images