A field aqueduct concrete surface crack prevention device and construction method

Abstract

The application discloses a kind of field aqueduct concrete surface crack prevention equipment and construction method, field aqueduct concrete surface crack prevention equipment includes steel structure, model groove and pouring trolley, steel structure is installed in the top of aqueduct concrete;Two groups of model grooves are oppositely located at the left and right sides of aqueduct concrete, and the top of model groove is fixedly connected with the left and right ends of steel structure respectively, and the lower end of model groove is fixedly connected by reinforcing bar, and model groove is used to form model cavity containing foam concrete on the side of aqueduct concrete;Pouring trolley is arranged on the top of aqueduct concrete, and pouring trolley can move along the extension direction of aqueduct concrete, to pour foam concrete on the top surface of aqueduct concrete.The construction method is used to prevent the construction of aqueduct surface by equipment, and the present field aqueduct concrete surface crack prevention equipment and construction method can effectively prevent the cracks of aqueduct surface caused by temperature difference, affect the normal use of mixed aqueduct, and can prolong the service life of aqueduct.

Description

Technical Field

[0001] This invention relates to building structures, and more specifically to a device and construction method for preventing cracks on the concrete surface of outdoor aqueducts. Background Technology

[0002] An aqueduct is an elevated water channel that carries water across rivers, canals, valleys, depressions, and roads. It is commonly used for irrigation, flood control, and sediment removal; large aqueducts can also be navigable. Aqueducts are primarily constructed using materials such as masonry, concrete, and reinforced concrete.

[0003] Under extreme climatic conditions such as severe cold and heat, high temperature stress will be generated on the surface of concrete components in the field. This temperature stress can easily cause temperature cracks in the concrete components. The formation of temperature cracks will greatly affect the normal use and durability of concrete components, especially outdoor concrete components with certain seepage prevention requirements and difficult real-time maintenance, such as aqueducts. Aqueducts need to transport water, and the requirements for seepage prevention are even higher. Therefore, there is an urgent need to develop a device that can effectively prevent temperature difference cracks from forming on the surface of outdoor aqueducts. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide a concrete surface crack prevention system, construction method and pouring trolley for aqueducts, which is used to insulate the outer surface of the aqueduct, effectively prevent the surface of the aqueduct from cracking due to temperature difference, thus affecting the normal use of the concrete aqueduct and extending the service life of the aqueduct.

[0005] To achieve the above objectives, the present invention provides a technical solution as follows: a crack prevention system for concrete surfaces in aqueducts, comprising:

[0006] Steel structure, installed on top of the concrete aqueduct;

[0007] There are two sets of model troughs, which are located opposite each other on the left and right sides of the aqueduct concrete. The top ends of the two sets of model troughs are fixedly connected to the left and right ends of the steel structure, respectively. The bottom ends of the two sets of model troughs are fixedly connected by steel bars. The model troughs are used to form a model cavity on the side of the aqueduct concrete to accommodate foamed concrete.

[0008] A pouring trolley is positioned on top of the aqueduct concrete and is capable of moving along the extension direction of the aqueduct concrete to pour foamed concrete onto the top surface of the aqueduct concrete.

[0009] Furthermore, the steel structure includes a top steel support structure, an elevated layer, a top foamed concrete layer, and a crack-resistant layer. The top steel support structure is erected on top of the aqueduct concrete, the elevated layer is erected on the top steel support structure, the pouring trolley is capable of pouring foamed concrete into the elevated layer to form the top foamed concrete layer, and the crack-resistant layer is formed by laying crack-resistant material on the top surface of the top foamed concrete layer.

[0010] Furthermore, the pouring trolley includes:

[0011] A chassis, on which tires are mounted;

[0012] The connecting adjustment mechanism is mounted on the chassis; and

[0013] The template is positioned above the chassis via the connecting adjustment mechanism, which can adjust the height and shape of the template; the template is provided with an injection port.

[0014] Furthermore, the connection adjustment mechanism includes multiple lifting screws, the template includes two half-plates arranged opposite each other, the connecting edges of the two half-plates are hinged to each other, the multiple lifting screws are rotatably arranged on the chassis at intervals, and the tops of the multiple lifting screws are hinged to the half-plates.

[0015] Furthermore, the connection adjustment mechanism also includes multiple top caps, which are hinged to the half plate, and the lifting screw is rotatably connected to the top caps.

[0016] Furthermore, the pouring trolley also includes a crack-resistant material installation device, which is set on the template and located near the rear of the trolley relative to the injection port. The crack-resistant material is used to install and release the crack-resistant material. When the pouring trolley moves forward, the crack-resistant material is simultaneously laid on the top foamed concrete layer to form a crack-resistant layer.

[0017] A construction method for preventing cracks on the surface of concrete in outdoor aqueducts, using the aforementioned equipment for preventing cracks on the surface of concrete in outdoor aqueducts, includes the following steps:

[0018] A top steel support structure and an elevated floor are installed on the top surface of the aqueduct concrete.

[0019] Construct mold troughs on both sides of the top steel support structure and pour foamed concrete;

[0020] A pouring trolley is erected on top of the concrete aqueduct.

[0021] As the pouring trolley moves forward, it pours foamed concrete on top of the aqueduct concrete and lays crack-resistant material.

[0022] Furthermore, it also includes the following steps:

[0023] The reinforcing bars are connected between the lower ends of the two model slots after the two model slots are installed.

[0024] Furthermore, it also includes the following steps:

[0025] After the foamed concrete has reached a certain strength, a waterproof layer is applied on the crack-resistant layer 140.

[0026] Furthermore, it also includes the following steps:

[0027] After the top foamed concrete has reached a certain strength, a waterproof coating is applied to the joint between the top and the sides to prevent water seepage.

[0028] The beneficial effects of this invention are:

[0029] The aforementioned field aqueduct concrete surface crack prevention equipment includes a steel structure, mold troughs, and a pouring trolley. The structure is installed on top of the aqueduct concrete. There are two sets of mold troughs, located opposite each other on the left and right sides of the aqueduct concrete. The top ends of the two sets of mold troughs are fixedly connected to the left and right ends of the steel structure, respectively, and the lower ends of the two sets of mold troughs are fixedly connected by steel bars. The mold troughs are used to form mold cavities on the sides of the aqueduct concrete to accommodate foamed concrete. The pouring trolley is set on top of the aqueduct concrete and can move along the extension direction of the aqueduct concrete to pour foamed concrete onto the top surface of the aqueduct concrete. Through the side and top thermal insulation and crack-resistant structures, the side walls and top of the aqueduct can be insulated and reinforced, thereby effectively preventing temperature cracks from occurring in the aqueduct due to extreme cold and heat, which would affect the normal use of the aqueduct.

[0030] The construction method for preventing cracks on the concrete surface of this aqueduct allows for the convenient and effective application of thermal insulation and crack-resistant layers on the sides and top of the aqueduct. This provides insulation and reinforcement to the sidewalls and top of the aqueduct, effectively preventing temperature cracks caused by extreme cold and heat, which could affect the normal use of the aqueduct. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0032] Figure 1 This is a schematic diagram of a field aqueduct concrete surface crack prevention and control device, which removes the pouring trolley, according to an embodiment of the present invention.

[0033] Figure 2 for Figure 1The diagram shows the pouring trolley on top of the concrete surface of the field aqueduct in the equipment for preventing cracks on the concrete surface of the field aqueduct.

[0034] Figure 3 for Figure 1 A top view of the pouring trolley in the field aqueduct concrete surface crack prevention equipment shown.

[0035] Figure 4 for Figure 3 A diagram of AA in the middle;

[0036] Figure 5 for Figure 3 A schematic diagram of BB;

[0037] Figure 6 for Figure 2 A partial schematic diagram at point C in the middle;

[0038] Figure 7 This is a bottom view of the pouring trolley in the field aqueduct concrete surface crack prevention equipment provided in an embodiment of the present invention;

[0039] Figure 8 A step diagram illustrating a construction method for preventing cracks on the surface of aqueduct concrete provided by the present invention;

[0040] Figure label:

[0041] 100. Steel structure; 110. Top steel support structure; 120. Elevated floor; 121. Pin rod; 122. Support mesh; 130. Top foamed concrete layer; 140. Crack-resistant layer; 150. Waterproof layer; 200. Model trough; 210. Side insulation and crack-resistant structure; 220. Reinforcing steel;

[0042] 300. Pouring trolley; 310. Chassis; 311. Tire; 320. Connecting and adjusting mechanism; 321. Lifting screw; 322. Top cap; 330. Template; 331. Injection port; 340. Crack-resistant material installation device; 341. Crack-resistant material. Detailed Implementation

[0043] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0044] Please see Figures 1 to 7 The present invention provides a device for preventing surface cracks in concrete 1 of an outdoor aqueduct, comprising a steel structure 100, a model trough 200 and a pouring trolley 300, for preventing surface cracks in concrete 1 of an outdoor aqueduct.

[0045] For details, please see Figure 1 and Figure 2 The steel structure 100 is installed on top of the concrete aqueduct 1, providing insulation and protection for the top of the concrete aqueduct 1. There are two sets of model troughs 200, located opposite each other on the left and right sides of the concrete aqueduct 1, with the tops of the two sets of model troughs 200 fixedly connected to the left and right ends of the steel structure 100 respectively. The lower ends of the two sets of model troughs 200 are fixedly connected by reinforcing bars 220. The model troughs 200 are used to form model cavities on the sides of the concrete aqueduct 1 to accommodate foamed concrete. During construction, after the model troughs 200 are installed on the left and right ends of the steel structure 100, foamed concrete is poured into the model cavities on both sides to form a side foam insulation layer 210, providing insulation and protection for the left and right sides of the concrete aqueduct 1 in the field.

[0046] Please see Figure 2 The pouring trolley 300 is positioned on top of the aqueduct concrete 1, and the pouring trolley 300 can move along the extension direction of the aqueduct concrete 1 to pour foamed concrete on the top surface of the aqueduct concrete 1.

[0047] By using the above-mentioned prevention and control equipment, thermal insulation and crack prevention protection can be quickly formed on both sides of the aqueduct concrete 1, thereby effectively preventing the aqueduct concrete 1 from cracking.

[0048] Please see Figure 1 In this embodiment, the steel structure 100 includes a top steel support structure 110, an elevated layer 120, a top foamed concrete layer 130, and a crack-resistant layer 140. The top steel support structure 110 is erected on top of the aqueduct concrete 1, the elevated layer 120 is erected on the top steel support structure 110, and the pouring trolley 300 can pour foamed concrete into the elevated layer 120 to form the top foamed concrete layer 130. The crack-resistant layer 140 is formed by laying crack-resistant material 341 on the top surface of the top foamed concrete layer 130.

[0049] In practice, the top steel support structure 110 can be erected first, followed by the overhead layer 120. The top foamed concrete layer 130 can be formed by pouring top foamed concrete in the overhead layer 120 using a pouring trolley 300. Finally, the crack-resistant material 341 can be laid on top.

[0050] The bottom of the overhead layer 120 can be supported by the pin rod 121, and the top can be a square grid support net 122 (the size of a single grid can be 2cm x 2cm, 4cm x 4cm, etc.). The support net 222 can effectively support the high-density geotextile when the top foam concrete layer 130 has not yet developed strength, thus preventing the high-density geotextile from sinking into the foam concrete.

[0051] The top foamed concrete layer 130 serves to insulate and protect the top aqueduct concrete 1. The top foamed concrete layer 130 uses foamed concrete commonly used in existing technologies. The crack-resistant layer 140 is laid on top of the top foamed concrete layer 130, enhancing its crack resistance and providing insulation. In practice, the crack-resistant material 341 can be made of high-density geotextile commonly used in existing technologies.

[0052] In specific construction, a waterproof layer 150 can also be set on top of the crack-resistant layer 140 for waterproofing. In specific implementation, the top waterproof layer 150 can be formed by applying a seepage-proof coating to the crack-resistant layer 140.

[0053] Please see Figures 2 to 7 In this embodiment, the pouring trolley 300 includes a chassis 310, a connecting and adjusting mechanism 320, and a template 330.

[0054] Specifically, a tire 311 is provided on the chassis 310. A connecting adjustment mechanism 320 is provided on the chassis 310. The template 330 is positioned above the chassis 310 via the connecting adjustment mechanism 320. The connecting adjustment mechanism 320 can adjust the height and shape of the template 330; an injection port 331 is provided on the template 330.

[0055] In use, first set up the pouring trolley 300, then adjust the height and shape of the template 330 through the connecting adjustment mechanism 320, then connect the pouring trolley 300 to the external moving mechanism, and move the pouring trolley 300 by pulling it through the external moving mechanism. While the pouring trolley 300 is moving, the foamed concrete is poured into the suspended layer 120 through the injection port 331. As the template 330 moves forward with the pouring trolley 300, it scrapes and plasticizes the foamed concrete to form the required height and shape.

[0056] In this embodiment, the connecting adjustment mechanism 320 includes a plurality of lifting screws 321. The template 330 includes two half-plates arranged opposite each other, with the connecting edges of the two half-plates hinged to each other. The plurality of lifting screws 321 are rotatably arranged on the chassis 310 at intervals, and the tops of the plurality of lifting screws 321 are hinged to the half-plates.

[0057] When it is necessary to adjust the height of the template 330 during use, all the lifting screws 321 can be rotated to adjust the height of the template 330. When the top surface of the foamed concrete layer at the top of the aqueduct concrete 1 is gradually inclined downward to both sides, the middle lifting screw 321 can be adjusted to be higher, so that the connection between the two half-slabs rises and the sides fall. Of course, the height of the middle lifting screw 321 can also be kept unchanged, and the lifting screws 321 on both sides can be lowered to achieve the same purpose.

[0058] In practical implementation, a top cap 322 can be hinged to the half plate, and the lifting screw 321 can be rotatably connected to the top cap 322. By rotating the lifting screw 321, the template 330 can be raised or lowered through the top cap 322.

[0059] In a preferred embodiment, the casting trolley 300 further includes a crack-resistant material installation device 340, which is installed on the template 330 and located near the rear of the trolley relative to the injection port 331. The crack-resistant material installation device 340 is used to install and release the crack-resistant material 341. When the casting trolley 300 moves forward, the crack-resistant material 341 is simultaneously laid on the top foamed concrete layer 130 to form a crack-resistant layer 140.

[0060] The installation device 340 for the crack-resistant material 341 can be a bracket with a rotating shaft. The crack-resistant material 341 can be a roll of high-density geotextile. The high-density geotextile is installed on the rotating shaft. When the pouring trolley 300 moves, the high-density geotextile can be laid through the pouring trolley 300 at the same time as pouring foamed concrete.

[0061] This pouring trolley 300 allows for the pouring of foamed concrete, controlling its height and shape, while simultaneously laying anti-crack material 341. This significantly improves work efficiency and the overall quality of the aqueduct 1 concrete surface crack control project.

[0062] Please see Figure 6 The present invention also provides a construction method for preventing cracks on the surface of aqueduct concrete, comprising the following steps:

[0063] S110. Install the top steel support structure 110 and the overhead layer 120 on the top surface of the aqueduct concrete 1.

[0064] Specifically, the top steel support structure 110 can be a single steel plate or spaced-apart rigid members. The elevated floor 120 can be constructed immediately after the top steel support structure 110 is completed, or it can be constructed subsequently. S120: Construct model grooves 200 on both sides of the top steel support structure 110 and pour foamed concrete.

[0065] Specifically, the model trough 200 can be a smooth stainless steel sheet bent toward the aqueduct concrete 1. The top of the model trough 200 is connected to the top steel support structure 110, and the top of the model trough 200 can be higher than the top steel support structure 110 to facilitate the pouring of top foamed concrete. A model cavity is formed between the model trough 200 and the aqueduct concrete 1. Foamed concrete is then poured into the model cavity.

[0066] S130. Erect a pouring trolley 300 on top of the concrete 1 of the aqueduct.

[0067] Specifically, the pouring trolley 300 can be mounted on the top steel support structure 110, with the tires 311 of the pouring trolley 300 located on the left and right sides of the top steel support structure 110, and the formwork 330 of the pouring trolley 300 located directly above the top steel support structure 110.

[0068] S140, the pouring trolley 300 pours foamed concrete layer and lays crack-resistant material 341 during the forward movement.

[0069] Specifically, the anti-crack fabric is installed on the pouring trolley 300, and the injection port 331 is connected to the external foamed concrete input device. Then, the pouring trolley 300 is connected to the external traction mechanism. During the process of the traction mechanism pulling the pouring trolley 300 forward, the foamed concrete liquid flows into the top steel support structure 110 and the suspended layer 120. At the same time, the formwork 330 can plasticize the foamed concrete, and the anti-crack fabric is also laid on the foamed concrete.

[0070] As a preferred embodiment, this construction method may further include the following steps:

[0071] After the two model slots 200 are installed, the steel bars 220 connected between the lower ends of the two model slots 200 can improve the prevention of the model slots 200 from swaying, thereby improving the tilting.

[0072] After the foamed concrete has reached a certain strength, a waterproof layer 150 is set on the crack-resistant layer 140; the waterproof layer 150 can be formed by applying an anti-seepage coating to the crack-resistant material 341.

[0073] After the foamed concrete has reached a certain strength, a top waterproof layer 150 is installed on the fiber crack-resistant layer 140. The waterproof layer 150 can be formed by applying a waterproof coating.

[0074] After the top foamed concrete has reached a certain strength, a waterproof coating is applied to the top and the joints between the top and the sides to prevent water seepage.

[0075] Using this waterproofing method, thermal insulation and crack-resistant protection can be quickly formed on the top and sides of the aqueduct concrete 1, thereby preventing the aqueduct concrete 1 from cracking and extending the service life of the aqueduct concrete 1.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A device for preventing cracks on the surface of concrete in outdoor aqueducts, characterized in that, include: Steel structure, installed on top of the concrete aqueduct; There are two sets of model troughs, which are located opposite each other on the left and right sides of the aqueduct concrete. The top ends of the two sets of model troughs are fixedly connected to the left and right ends of the steel structure, respectively. The bottom ends of the two sets of model troughs are fixedly connected by steel bars. The model troughs are used to form a model cavity on the side of the aqueduct concrete to accommodate foamed concrete. A pouring trolley is positioned on top of the aqueduct concrete and is capable of moving along the extension direction of the aqueduct concrete to pour foamed concrete onto the top surface of the aqueduct concrete. The steel structure includes a top steel support structure, an elevated layer, a top foamed concrete layer, and a crack-resistant layer. The top steel support structure is erected on top of the aqueduct concrete, the elevated layer is erected on the top steel support structure, the pouring trolley is capable of pouring foamed concrete into the elevated layer to form the top foamed concrete layer, and the crack-resistant layer is formed by laying crack-resistant material on the top surface of the top foamed concrete layer. The pouring trolley includes: A chassis, on which tires are mounted; The connecting adjustment mechanism is mounted on the chassis; and A template is mounted above the chassis via a connecting adjustment mechanism, which can adjust the height and shape of the template; the template is provided with an injection port. The connection adjustment mechanism includes multiple lifting screws, the template includes two half plates arranged opposite each other, the two half plates are hinged to each other at their connecting edges, the multiple lifting screws are rotatably arranged on the chassis at intervals, and the tops of the multiple lifting screws are hinged to the half plates. The pouring trolley also includes a crack-resistant material installation device, which is set on the template and located near the rear of the trolley relative to the injection port. The device is used to install and release the crack-resistant material. As the pouring trolley moves forward, the crack-resistant material is simultaneously laid on the top foamed concrete layer to form a crack-resistant layer.

2. The field aqueduct concrete surface crack preventing apparatus according to claim 1, wherein The connection adjustment mechanism also includes multiple top caps, which are hinged to the half plate, and the lifting screw is rotatably connected to the top caps.

3. A construction method for preventing and treating cracks on a concrete surface of a field flume, characterized by, The method for constructing an outdoor aqueduct concrete surface crack prevention device according to any one of claims 1-2 includes the following steps: A top steel support structure and an elevated floor are installed on the top surface of the aqueduct concrete. Construct mold troughs on both sides of the top steel support structure and pour foamed concrete; A pouring trolley is erected on top of the concrete aqueduct. As the pouring trolley moves forward, it pours foamed concrete on top of the aqueduct concrete and lays crack-resistant material.

4. The construction method for preventing cracks on the concrete surface of an outdoor aqueduct according to claim 3, characterized in that, It also includes the following steps: The reinforcing bars are connected between the lower ends of the two model slots after the two model slots are installed.

5. The construction method for preventing surface cracks in concrete aqueducts in the field according to claim 3, characterized in that, It also includes the following steps: After the foamed concrete has reached a certain strength, a waterproof layer is installed on the crack-resistant layer.

6. The construction method for preventing surface cracks in concrete aqueducts in the field according to claim 3, characterized in that, It also includes the following steps: After the top foamed concrete has reached a certain strength, a waterproof coating is applied to the joint between the top and the sides to prevent water seepage.

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