Construction method for supporting and reinforcing foraging slope template of special-shaped concrete manger

Abstract

The invention discloses a construction method for supporting and reinforcing an ingestion slope formwork of a special-shaped concrete trough, and relates to the technical field of constructional engineering. The method comprises the following steps: 1, construction preparation; 2, surveying and setting out; 3, binding reinforcing steel bars of the feeding trough; step 4, pre-assembling and checking the template; fifthly, the wood formwork is installed; sixthly, a hanging ring expansion bolt is installed; seventhly, the formwork is supported and reinforced; 8, checking before concrete pouring; ninthly, concrete pouring is conducted; tenthly, the formwork is dismantled; eleventhly, lifting ring expansion screws are dismantled, and bolt holes are plugged; 12, concrete curing; according to the construction method, the feeding trough is divided into sections and constructed in a segmented mode, a DN15 PVC sleeve is pre-buried at the bottom of the trough face in advance, and concrete at the trough bottom is poured in advance, so that the pulling supporting force and stability of a trough wall formwork are enhanced, and the risks of formwork expansion, grout leakage, displacement, deformation and the like in the pouring process of the slope bottom formwork are effectively prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of construction engineering, and in particular relates to a construction method for supporting and reinforcing a formwork support on a feeding slope of a special-shaped concrete feeding trough. Background Art

[0002] In the current construction process of concrete feeding troughs, the use effect and cycle of the feeding troughs have extremely high requirements on the construction quality and stability of the feeding slope. Since there are no good fixing points around the floor cushion layer in the cowshed, this is particularly unfavorable for the installation and reinforcement of the feeding trough template. In addition, the retaining wall of the feeding trough is a trapezoidal cross-section, and the trough bottom template has a great risk of mold expansion and leakage. The special-shaped feeding trough cannot be cast and formed in one time. Therefore, the invention of a construction method for supporting and reinforcing the template of the feeding slope of a special-shaped concrete feeding trough has important practical value. Therefore, we propose a construction method for supporting and reinforcing the template of the feeding slope of a special-shaped concrete feeding trough, which solves the problem of support and reinforcement during the construction of the template of the feeding slope of a special-shaped concrete feeding trough, and avoids the problems of unsupported reinforcement position and poor forming appearance. Summary of the invention

[0003] The purpose of the present invention is to provide a method for supporting and reinforcing the formwork of a special-shaped concrete trough for feeding slope. By developing a device for supporting and reinforcing the formwork of a special-shaped concrete trough for feeding slope, a method for supporting and reinforcing the formwork of a special-shaped concrete trough for feeding slope is provided, which solves the problems of support and reinforcement in the construction process of the existing formwork of a special-shaped concrete trough for feeding slope, and avoids the problems of unsupported reinforced positions and poor forming appearance.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention discloses a construction method for reinforcing a formwork support for a slope surface of a special-shaped concrete feeding trough, comprising the following steps: Step 1: Construction preparation: Step 2: Measure and lay out; Step 3: Tie the steel bars of the trough; Step 4: Template pre-assembly and inspection; Step 5: Wooden formwork installation; Step 6: Install the eyebolt expansion bolts; Step 7: Formwork support reinforcement; Step 8: Check before pouring concrete; Step 9: Concrete pouring; Step 10: Removal of formwork; Step 11: Remove the expansion screw of the lifting ring and seal the bolt hole; Step 12: Concrete curing.

[0005] Furthermore, the step one includes the following steps: Construction preparation is an important link to ensure the smooth progress of the entire construction process. The construction team needs to carefully study the construction drawings and fully understand the design requirements, size specifications, shape characteristics and other details of the foraging slope. On this basis, fully prepare all kinds of materials required for construction, including multi-layer glued wood formwork, steel bars of specified specifications and models, commercial concrete that meets performance standards, tension bolts of appropriate diameters, eyebolts, hooks and wooden planks, etc. Equipment required for construction, such as vibrators, radio saws and electric drills, must also be inspected, debugged and maintained in advance to ensure their good performance and stable operation.

[0006] Furthermore, in the step 2, measurement and layout are basic steps of construction, which require a high degree of precision and rigor. According to the design drawings, a level, a total station and an ink fountain are used to accurately lay out the control lines of the feeding slope and the side walls of the trough at the construction site. For the control lines, it is necessary to ensure that their positions are accurate and can clearly define the scope and boundaries of the feeding slope and the side walls of the trough. The setting of elevation control points must fully consider the changes in the base height to ensure that the base elevation and top elevation of the feeding trough can be accurately controlled during the construction process. During the measurement and layout process, surveyors need to strictly follow the measurement specifications and operating procedures, conduct multiple measurements and reviews to reduce errors and ensure the accuracy of the measurement results. After the measurement is completed, the measurement results must be clearly marked and protected to prevent them from being damaged or moved during subsequent construction.

[0007] Furthermore, in the step three, HPB300ф6 steel bars are used for the special-shaped concrete trough, and the reinforcement is carried out according to the length of the trough. The length of the vertical steel bar is 1500mm, the spacing is 250mm, and the length of the horizontal steel bar is 14m. The steel bars are arranged according to the designed spacing and position, and the intersections are firmly tied with wire. During the tying process, attention should be paid to maintaining the verticality and horizontality of the steel bars to avoid bending and twisting of the steel bars. At the same time, it is necessary to ensure that the thickness of the protective layer of the steel bars meets the design specifications. Pads can be used to control the thickness of the protective layer. After the tying is completed, a comprehensive inspection is carried out and the loose or loosely tied parts are reprocessed.

[0008] Furthermore, in step 4, before the formal on-site construction, it is first necessary to pre-assemble the formwork on the ground or other suitable working areas. The preparatory work includes cleaning the working area to ensure that the ground is flat and free of debris; preparing the necessary tools and materials, such as hammers, screwdrivers, sealing strips, spirit levels, spirit levels, etc.; ensuring that all formwork components are complete, including multi-layer plywood, back ribs, eyebolts, etc. When splicing the formwork, splice the formwork in a predetermined order and position according to the design drawings, use back ribs to reinforce the formwork to ensure its stability and straightness, and pay attention to the tightness of each connection point during the splicing process to ensure that there are no gaps. After the initial fixation is completed, use temporary supports or clamps to fix the formwork to prevent displacement or deformation during transportation, and check the overall stability of the formwork. After the pre-assembly is completed, the formwork needs to be fully inspected and necessary adjustments made to ensure that it meets the design requirements and construction. Standard, size check Use a tape measure or other measuring tools to check whether the length, width and height of the template meet the requirements of the design drawings, check whether the height difference between the inner and outer molds of the trough is correct, angle check Use a protractor or other tools to check whether the angle of the template meets the design requirements, and ensure that the angle of the trough slope template is 670mm, which meets the design specifications, splicing quality check Carefully check the joints between the templates to ensure that there are no obvious gaps or misalignments, and use sealing strips to treat any gaps found to prevent leakage during concrete pouring, verticality and horizontality check Use a spirit level and a level ruler to check the verticality and horizontality of the template to ensure that the flatness and verticality of the template installation meet the design requirements to avoid tilting or unevenness after the concrete is formed in the later stage, adjustment and correction Adjust and correct the parts that do not meet the requirements according to the inspection results to ensure that all template components are in the best condition for the next step of formal installation.

[0009] Furthermore, in the step 5, the template uses multi-layer plywood with a specification of 1830mm×915mm×140mm. According to the unique shape, angle and precise size of the trough, a special-shaped template is customized for matching. The height of the outer template of the feeding channel is 600mm, and the inner template is 220mm; the height of the outer template of the feeding channel is 600mm, and the slope template of the trough is 670mm. The back ribs are nailed on the template, which is beneficial to the stability of the template and the straightness of the shape. Before the template is installed, the template is cleaned to remove debris, dust and rust on the surface. Ensure that the formwork and concrete can bond well, and then evenly apply the release agent, which is conducive to the subsequent removal of the formwork and ensures the smoothness and flatness of the concrete surface; the installation of the formwork starts from the outer wall of the trough and gradually moves forward. During the installation process, it is necessary to ensure that the joints between the formworks are tight to prevent leakage. For the joints, use sealing strips to seal them. At the same time, pay close attention to the verticality and horizontality of the formwork, and use tools such as spirit levels and level rulers to measure and adjust to ensure that the flatness and verticality of the formwork installation meet the design requirements.

[0010] Furthermore, in step six, a hand drill is used to drill holes every 1m, the drilling depth is 130mm, the drilling diameter is 14mm, the drill bit is kept vertical to avoid the hole being skewed, and dust and debris in the hole are cleaned with a brush or blower and other tools to ensure that the hole is clean and free of debris. The M10×150 eyebolt expansion tube is installed into the hole to ensure that the expansion tube is completely inserted into the hole. The eyebolt is passed through the expansion tube, and the flat washer and spring washer are installed. The nut is tightened clockwise with a wrench. As the nut is tightened, the bolt will gradually move outward, and the expansion tube will expand due to the bottom of the bolt to fill the entire hole. The nut is tightened until the washer and the surface of the fixed object are flush to ensure that the fixing is stable and does not shake.

[0011] Furthermore, in the step seven, the formwork support reinforcement is the key to ensure the stability of the formwork. Wood planks, hooks and tension bolts are used as the main supporting structures. Three wood planks are used as back ribs at the low wall of the trough. A "J" beam is arranged on the top of the low wall and fastened with hooks. Tension bolts are set at the top and bottom of the slope side wall of the trough formwork for fastening. The specification of the tension bolts is Φ12mm, and the spacing is 500mm to meet the lateral pressure during concrete pouring and avoid mold expansion during concrete pouring. The tension bolts need to pass through the formwork and be fastened with nuts. A diagonal brace is set at the bottom and top respectively. At the same time, the fixed clamp rod of the hook is used to pass through the embedded lifting ring expansion bolt to fasten the movable clamp to the top diagonal brace to ensure that the formwork will not be deformed or displaced during concrete pouring, thereby enhancing the stability of the entire support system. After the support reinforcement is completed, it should be inspected and accepted to ensure that the support system is strong and reliable.

[0012] Furthermore, in the step eight, before pouring concrete, a detailed inspection is a key step to ensure construction quality and structural safety. First, check the stability and firmness of the formwork support system to confirm that there is no looseness or deformation, and use a spirit level and a vertical detection tool to check the verticality and horizontality of the formwork, and remove dust, oil and other debris on the surface of the formwork. Secondly, check the position, size and quantity of the steel skeleton according to the design drawings, check whether the steel connection is firm and free of rust, and ensure that the hooks at the ends of the steel bars meet the requirements of the specifications. Finally, check the position, size and number of embedded parts and reserved holes, check their fixing conditions, ensure that the embedded parts are firmly fixed to the formwork or steel skeleton, and the reinforcement measures around the reserved holes are in place. After completing these inspections, if all items meet the requirements, the next step of concrete pouring can be carried out; if any problems are found, they must be corrected in time to ensure the final structural quality and safety.

[0013] Furthermore, in step nine, before pouring concrete, it is necessary to conduct a comprehensive and detailed inspection of the formwork, steel bars and embedded steel bars, etc., to check whether the splicing of the formwork is tight and whether there is a risk of leakage; check whether the number, position, spacing and connection of the steel bars meet the design and specification requirements; check whether the position and firmness of the embedded steel bars meet the construction requirements. Concrete should be poured in layers to ensure that the concrete can fully fill the interior of the formwork to avoid quality problems such as voids and honeycombs. The thickness of each poured layer shall not exceed 300mm to ensure that the concrete can be fully compacted during the vibration process. When vibrating the concrete, use a 30mm diameter handheld vibrator to vibrate evenly, and vibrate at every 100mm interval to avoid missing vibration or over-vibration. The vibration should be dense, and the vibrator should be inserted into the lower layer 100mm to ensure the combination of the upper and lower layers of concrete, without bubbles or gaps inside, thereby improving the strength and durability of the concrete.

[0014] Furthermore, in the step 10, the formwork can only be removed when the concrete strength reaches the design requirements. The order of formwork removal should follow the principle of supporting first and then removing, and removing the last support first. During the removal process, be careful to avoid using excessive force or improper methods that may cause damage to the concrete surface. For parts that are difficult to remove, forceful removal should not be carried out. The removed formwork should be cleaned, sorted and stored in time to facilitate subsequent reuse or maintenance.

[0015] In the step eleven, use a wrench to rotate the bolt counterclockwise. When the bolt is completely loosened, use pliers to remove the expansion tube from the hole, use an air cylinder to clean the dust and debris in the bolt hole, and ensure that the bolt hole is clean and dry for sealing. Since the diameter of the bolt hole is small, use No. IV grouting material to seal it until the bottom surface of the trough is flush, and use a trowel to smooth it.

[0016] Furthermore, in the step twelve, after the formwork is removed, the concrete must be cured immediately to ensure the strength growth and durability of the concrete. The curing time is not less than 7 days, which is a basic requirement to ensure the full development of concrete performance. The curing method can be selected according to actual conditions, such as watering curing and covering with plastic film curing. Watering curing should keep the concrete surface moist, but there should be no accumulation of water; covering with plastic film curing should ensure that the film is well sealed to prevent water loss. During the curing period, the curing condition of the concrete should be checked regularly, and water should be replenished in time to ensure the effect of concrete curing.

[0017] The present invention has the following beneficial effects: 1. The present invention divides the feeding trough into sections and constructs it in sections. A DN15 PVC sleeve is pre-buried at the bottom of the trough surface, and the concrete at the bottom of the trough is poured in advance to enhance the tension support and stability of the trough wall formwork, and effectively prevent the risks of mold expansion, slurry leakage, displacement and deformation of the bottom formwork of the slope during the pouring process.

[0018] 2. The present invention adopts multiple reinforcement measures, including tension bolts, diagonal braces, hooks and horizontal cross bars, to ensure the overall stability of the formwork system.

[0019] 3. The construction process of the present invention is easy to operate and control, can effectively shorten the construction period, the eyebolts can be recycled, and the construction cost is reduced, thus bringing substantial economic benefits to the construction industry.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 The present invention is a flowchart of a method for reinforcing a formwork support for a slope surface of a special-shaped concrete trough. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1 As shown, the present invention is a construction method for supporting and reinforcing a formwork support for a slope surface of a special-shaped concrete feeding trough, comprising the following steps: Step 1: Construction preparation: Step 2: Measurement and layout; Step 3: Binding of trough reinforcement; Step 4: Pre-assembly and inspection of formwork; Step 5: Installation of wooden formwork; Step 6: Installation of lifting eye expansion bolts; Step 7: Reinforcement of formwork support; Step 8: Inspection before concrete pouring; Step 9: Concrete pouring; Step 10: Removal of formwork; Step 11: Removal of lifting eye expansion screws and sealing of bolt holes; Step 12: Concrete curing.

[0025] Step one includes the following steps: Construction preparation is an important link to ensure the smooth progress of the entire construction process. The construction team needs to carefully study the construction drawings and fully understand the design requirements, size specifications, shape characteristics and other details of the foraging slope. On this basis, fully prepare all kinds of materials required for construction, including multi-layer glued wood formwork, specified specifications and models of steel bars, commercial concrete that meets performance standards, tension bolts of appropriate diameters, eyebolts, expansion bolts, hooks and wooden planks. Equipment required for construction, such as vibrators, radio saws and electric drills, must also be inspected, debugged and maintained in advance to ensure their good performance and stable operation.

[0026] In step two, surveying and laying out is a basic step of construction, which requires a high degree of precision and rigor. According to the design drawings, use a level, total station and ink fountain to accurately lay out the control lines of the feeding slope and the side walls of the trough at the construction site. For the control lines, it is necessary to ensure that their positions are accurate and can clearly define the scope and boundaries of the feeding slope and the side walls of the trough. The setting of elevation control points must fully consider the changes in the base level to ensure that the base elevation and top elevation of the feeding trough can be accurately controlled during the construction process. During the surveying and laying out process, surveyors need to strictly follow the measurement specifications and operating procedures, conduct multiple measurements and reviews to reduce errors and ensure the accuracy of the measurement results. After the measurement is completed, the measurement results must be clearly marked and protected to prevent them from being damaged or moved during subsequent construction.

[0027] In step three, HPB300 ф6 steel bars are used for special-shaped concrete troughs. The reinforcement is arranged according to the length of the trough. The length of the vertical steel bars is 1500mm, the spacing is 250mm, and the length of the horizontal steel bars is 14m. The steel bars are arranged according to the designed spacing and position, and the intersections are firmly tied with wire. During the tying process, attention should be paid to maintaining the verticality and horizontality of the steel bars to avoid bending and twisting of the steel bars. At the same time, it is necessary to ensure that the thickness of the steel bar protective layer meets the design specifications. Pads can be used to control the thickness of the protective layer. After the tying is completed, a comprehensive inspection should be carried out and loose or loosely tied parts should be reprocessed.

[0028] In step 4, before formal on-site construction, it is necessary to pre-assemble the formwork on the ground or other suitable working areas. The preparation work includes cleaning the working area to ensure that the ground is flat and free of debris; preparing the necessary tools and materials, such as hammers, screwdrivers, sealing strips, spirit levels, spirit levels, etc.; ensuring that all formwork components are complete, including multi-layer plywood, back ribs, eyebolts, etc. When splicing the formwork, splice the formwork in the predetermined order and position according to the design drawings, use back ribs to reinforce the formwork to ensure its stability and straightness, and pay attention to the tightness of each connection point during the splicing process to ensure that there are no gaps. After completing the initial fixation, use temporary supports or clamps to fix the formwork to prevent displacement or deformation during transportation, and check the overall stability of the formwork. After completing the pre-assembly, the formwork needs to be Comprehensive inspection and necessary adjustments to ensure that it meets the design requirements and construction standards. Size inspection: Use a tape measure or other measuring tools to check whether the length, width and height of the template meet the requirements of the design drawings, and check whether the height difference between the inner and outer molds of the trough is correct. Angle inspection: Use a protractor or other tools to check whether the angle of the template meets the design requirements, and ensure that the angle of the trough slope template is 670mm, which meets the design specifications. Splicing quality inspection: Carefully check the joints between the templates to ensure that there are no obvious gaps or misalignments. Use sealing strips to treat any gaps found to prevent leakage during concrete pouring. Verticality and horizontality inspection: Use a level and a level ruler to check the verticality and horizontality of the template to ensure that the flatness and verticality of the template installation meet the design requirements to avoid tilting or unevenness after the concrete is formed in the later stage. Adjustment and correction: Adjust and correct the parts that do not meet the requirements according to the inspection results to ensure that all template components are in the best condition for the next step of formal installation.

[0029] In step five, the template uses multi-layer plywood with a specification of 1830mm×915mm×140mm. According to the unique shape, angle and precise size of the trough, a special-shaped template is customized for matching. The height of the outer template of the feeding channel is 600mm, and the inner template is 220mm; the height of the outer template of the feeding channel is 600mm, and the slope template of the trough is 670mm. The back ribs are nailed on the template, which is beneficial to the stability of the template and the straightness of the shape. Before installing the template, clean the template to remove debris, dust and rust on the surface to ensure the template It can bond well with concrete, and then evenly apply the release agent, which is conducive to the subsequent removal of the formwork and ensures the smoothness and flatness of the concrete surface; the installation of the formwork starts from the outer wall of the trough and gradually moves forward. During the installation process, it is necessary to ensure that the joints between the formworks are tight to prevent leakage. For the joints, use sealing strips to seal them. At the same time, pay close attention to the verticality and horizontality of the formwork, and use tools such as spirit levels and level rulers to measure and adjust to ensure that the flatness and verticality of the formwork installation meet the design requirements.

[0030] In step 6, use a hand drill to drill holes every 1m, with a drilling depth of 130mm and a drilling diameter of 14mm. Keep the drill bit vertical to avoid the holes being skewed. Use a brush or blower to clean the dust and debris in the hole to ensure that the hole is clean and free of debris. Install the M10×150 eyebolt expansion tube into the hole to ensure that the expansion tube is completely inserted into the hole. Pass the eyebolt through the expansion tube and install the flat washer and spring washer. Use a wrench to tighten the nut clockwise. As the nut is tightened, the bolt will gradually move outward, and the expansion tube will expand due to the bottom of the bolt to fill the entire hole. Tighten the nut until the washer is flush with the surface of the fixture to ensure that the fixture is stable and does not shake. In step seven, the reinforcement of formwork support is the key to ensure the stability of the formwork. Wood, hooks and tension bolts are used as the main supporting structure. Three woods are used as back ribs at the low wall of the trough. A "J" beam is arranged on the top of the low wall and fastened with hooks. Tension bolts are set at the top and bottom of the slope side wall of the trough formwork for fastening. The specification of the tension bolts is Φ12mm, and the spacing is 500mm to meet the lateral pressure during concrete pouring and avoid mold expansion during concrete pouring. The tension bolts need to pass through the formwork and be fastened with nuts. In addition, a diagonal brace is set at the bottom and top respectively. At the same time, the fixed clamp rod of the hook is used to pass through the embedded lifting ring expansion bolt to fasten the movable clamp to the top diagonal brace to ensure that the formwork will not deform or displace during concrete pouring, thereby enhancing the stability of the entire support system. After the support reinforcement is completed, it should be inspected and accepted to ensure that the support system is strong and reliable.

[0031] In step eight, before pouring concrete, a detailed inspection is a key step to ensure construction quality and structural safety. First, check the stability and firmness of the formwork support system to confirm that there is no looseness or deformation, and use a level and vertical detection tool to check the verticality and horizontality of the formwork. At the same time, remove dust, oil and other debris on the surface of the formwork. Secondly, check the position, size and quantity of the steel skeleton according to the design drawings, check whether the steel connection is firm and free of rust, and ensure that the hooks at the ends of the steel bars meet the requirements of the specifications. Finally, check the position, size and number of embedded parts and reserved holes, check their fixing conditions, ensure that the embedded parts are firmly fixed to the formwork or steel skeleton, and the reinforcement measures around the reserved holes are in place. After completing these inspections, if all items meet the requirements, the next step of concrete pouring can be carried out; if any problems are found, they must be corrected in time to ensure the final structural quality and safety; In step nine, before pouring concrete, it is necessary to conduct a comprehensive and detailed inspection of the formwork, steel bars and embedded steel bars, check whether the splicing of the formwork is tight and whether there is a risk of leakage; check whether the number, position, spacing and connection of the steel bars meet the design and specification requirements; check whether the position and firmness of the embedded steel bars meet the construction requirements. Concrete should be poured in layers to ensure that the concrete can fully fill the interior of the formwork to avoid quality problems such as voids and honeycombs. The thickness of each poured layer shall not exceed 300mm to ensure that the concrete can be fully compacted during the vibration process. When vibrating the concrete, use a 30mm diameter handheld vibrator to vibrate evenly. The vibration points should be vibrated every 100mm to avoid missing vibration or over-vibration. The vibration should be dense, and the vibrator should be inserted 100mm into the lower layer to ensure the combination of the upper and lower layers of concrete, without bubbles or gaps inside, thereby improving the strength and durability of the concrete.

[0032] In step 10, the formwork can be removed only when the concrete strength reaches the design requirements. The order of formwork removal should follow the principle of first support and then removal, and then removal of the last support. During the removal process, be careful to avoid using excessive force or improper methods to damage the concrete surface. For parts that are difficult to remove, do not forcefully remove them. The removed formwork should be cleaned, sorted and stored in time for subsequent reuse or maintenance. In step 11, use a wrench to rotate the bolt counterclockwise. When the bolt is completely loosened, use pliers to remove the expansion tube from the hole, and use an air cylinder to clean the dust and debris in the bolt hole to ensure that the bolt hole is clean and dry for sealing. Since the diameter of the bolt hole is small, use No. IV grouting material to seal it until the bottom surface of the trough is flush and smoothed with a trowel.

[0033] In step 12, after the formwork is removed, the concrete must be cured immediately to ensure the strength growth and durability of the concrete. The curing time should be no less than 7 days. This is the basic requirement to ensure the full development of concrete performance. The curing method can be selected according to the actual situation, such as watering curing and covering with plastic film curing. Watering curing should keep the concrete surface moist, but there should be no water accumulation; plastic film curing should ensure that the film is well sealed to prevent water loss. During the curing period, the curing condition of the concrete should be checked regularly, and water should be added in time to ensure the effect of concrete curing.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A construction method for reinforcing the formwork support of a special-shaped concrete trough feeding slope, characterized in that: The steps include: Step 1: Construction preparation: Step 2: Measure and lay out; Step 3: Tie the steel bars of the trough; Step 4: Template pre-assembly and inspection; Step 5: Installation of wooden formwork; Step 6: Install the eyebolt expansion bolts; Step 7: Formwork support reinforcement; Step 8: Check before pouring concrete; Step 9: Concrete pouring; Step 10: Removal of formwork; Step 11: Remove the expansion screw of the lifting ring and seal the bolt hole; Step 12: Concrete curing.

2. A method for reinforcing the formwork support of a special-shaped concrete trough feeding slope according to claim 1, characterized in that: The step one includes the following steps: Construction preparation is an important link to ensure the smooth progress of the entire construction process. The construction team needs to carefully study the construction drawings and fully understand the design requirements, size specifications, shape characteristics and other details of the foraging slope. On this basis, fully prepare all kinds of materials required for construction, including multi-layer glued wood formwork, steel bars of specified specifications and models, commercial concrete that meets performance standards, tension bolts of appropriate diameters, eyebolts, hooks and wooden planks, etc. Equipment required for construction, such as vibrators, radio saws and electric drills, must also be inspected, debugged and maintained in advance.

3. The method for reinforcing the formwork support of a special-shaped concrete trough feeding slope according to claim 1, characterized in that: In the step 2, surveying and laying out is a basic step of construction, which requires a high degree of precision and rigor. According to the design drawings, a level, a total station and an ink fountain are used to accurately lay out the control lines of the feeding slope and the side walls of the trough at the construction site. For the control lines, it is necessary to ensure that their positions are accurate and can clearly define the scope and boundaries of the feeding slope and the side walls of the trough. The setting of elevation control points must fully consider the height changes of the base layer to ensure that the base elevation and top surface elevation of the feeding trough can be accurately controlled during the construction process. During the surveying and laying out process, surveyors need to strictly follow the measurement specifications and operating procedures, conduct multiple measurements and reviews to reduce errors and ensure the accuracy of the measurement results. After the measurement is completed, the measurement results must be clearly marked and protected to prevent them from being damaged or moved during subsequent construction.

4. A method for reinforcing the formwork support of a special-shaped concrete trough feeding slope according to claim 1, characterized in that: In the step three, HPB300ф6 steel bars are used for the special-shaped concrete trough, and the reinforcement is carried out according to the length of the trough. The length of the vertical steel bar is 1500mm, the spacing is 250mm, and the length of the horizontal steel bar is 14m. The steel bars are arranged according to the designed spacing and position, and the intersections are firmly tied with wire. During the tying process, attention should be paid to maintaining the verticality and horizontality of the steel bars to avoid bending and twisting of the steel bars. At the same time, it is necessary to ensure that the thickness of the protective layer of the steel bars meets the design specifications. Pads can be used to control the thickness of the protective layer. After the tying is completed, a comprehensive inspection is carried out and the loose or loosely tied parts are reprocessed.

5. The method for reinforcing the formwork support of a special-shaped concrete trough feeding slope according to claim 1, characterized in that: In step 4, before the formal on-site construction, the formwork needs to be pre-assembled on the ground or other suitable working areas. The preparation work includes cleaning the working area to ensure that the ground is flat and free of debris; preparing the necessary tools and materials, such as hammers, screwdrivers, sealing strips, spirit levels, and spirit levels; ensuring that all formwork components are complete, including multi-layer plywood, back ribs, and eye expansion bolts. When splicing the formwork, the formwork is spliced ​​in a predetermined order and position according to the design drawings, and the back ribs are used to reinforce the formwork to ensure its stability and straightness. During the splicing process, attention should be paid to the tightness of each connection point to ensure that there are no gaps. After the initial fixation is completed, the formwork is fixed with temporary supports or clamps to prevent displacement or deformation during transportation, and the overall stability of the formwork is checked. After the pre-assembly is completed, the formwork needs to be fully inspected and necessary adjustments made to ensure that it meets the design requirements and construction standards. Size check: Use a tape measure or other measuring tools to check whether the length, width and height of the template meet the requirements of the design drawings, and check whether the height difference between the inner and outer molds of the trough is correct. Angle check: Use a protractor or other tools to check whether the angle of the template meets the design requirements, and ensure that the angle of the trough slope template is 670mm, which meets the design specifications. Splicing quality check: Carefully check the joints between the templates to ensure that there are no obvious gaps or misalignments. Use sealing strips to treat any gaps found to prevent leakage during concrete pouring. Verticality and horizontality check: Use a spirit level and a level ruler to check the verticality and horizontality of the template to ensure that the flatness and verticality of the template installation meet the design requirements to avoid tilting or unevenness after the concrete is formed in the later stage. Adjustment and correction: Adjust and correct the parts that do not meet the requirements according to the inspection results to ensure that all template components are in the best condition for the next step of formal installation.

6. The method for reinforcing the formwork support of a special-shaped concrete trough feeding slope according to claim 1, characterized in that: In the step five, the template uses multi-layer plywood with a specification of 1830mm×915mm×140mm. According to the unique shape, angle and precise size of the trough, a dedicated special-shaped template is customized for matching. The height of the outer template of the feeding channel is 600mm, and the inner template is 220mm; the height of the outer template of the feeding channel is 600mm, and the slope template of the trough is 670mm. The back rib is nailed on the template. Before the template is installed, the template is cleaned to remove debris, dust and rust on the surface, and then the release agent is evenly applied; the installation of the template starts from the outer wall of the trough and gradually moves forward. During the installation process, it is necessary to ensure that the joints between the templates are tightly connected to prevent leakage. For the joints, use sealing strips to implement sealing treatment. At the same time, pay close attention to the verticality and horizontality of the template, and use tools such as spirit levels and spirit levels to measure and adjust to ensure that the flatness and verticality of the template installation meet the design requirements.

7. The method for reinforcing the formwork support of a special-shaped concrete trough feeding slope according to claim 1, characterized in that: In the step six, use a hand drill to drill holes every 1m, the drilling depth is 130mm, the drilling diameter is 14mm, keep the drill bit vertical to avoid the hole being skewed, use a brush or blower and other tools to clean the dust and debris in the hole to ensure that the hole is clean and free of debris, install the M10×150 eyebolt expansion tube into the hole, ensure that the expansion tube completely enters the hole, pass the eyebolt through the expansion tube, and install the flat washer and spring washer, use a wrench to tighten the nut clockwise, as the nut is tightened, the bolt will gradually move outward, and the expansion tube will expand due to the bottom of the bolt to fill the entire hole, tighten the nut until the washer and the surface of the fixed object are flush, in the step seven, the formwork support reinforcement is the key to ensure the stability of the formwork, with wooden squares, hooks and tension bolts as the main The necessary supporting structure is used. Three wooden squares are used as back ribs at the low wall of the trough, and a cross-beam is arranged on the top of the low wall and fastened with a hook; tension bolts are set at the top and bottom of the side walls of the slope of the trough formwork for fastening. The specification of the tension bolts is Φ12mm, and they are arranged at a spacing of 500mm to meet the lateral pressure during concrete pouring and avoid mold expansion during concrete pouring. The tension bolts need to pass through the formwork and be fastened with nuts. In addition, a diagonal brace is set at the bottom and top respectively. At the same time, the fixed clamp rod of the hook is used to pass through the embedded lifting ring expansion bolt, and the movable clamp is fastened to the top diagonal brace to ensure that the formwork will not deform or displace during concrete pouring. After the support reinforcement is completed, it should be inspected and accepted.

8. The method for reinforcing the formwork support of a special-shaped concrete trough feeding slope according to claim 1, characterized in that: In the step eight, before pouring concrete, a detailed inspection is a key step. First, check the stability and firmness of the formwork support system, confirm that there is no looseness or deformation, and use a spirit level and a vertical detection tool to check the verticality and horizontality of the formwork, and remove dust, oil and other debris on the surface of the formwork. Secondly, check the position, size and quantity of the steel skeleton according to the design drawings, check whether the steel connection is firm and free of rust, and ensure that the hooks at the ends of the steel bars meet the requirements of the specifications. Finally, check the position, size and number of embedded parts and reserved holes, check their fixing conditions, ensure that the embedded parts are firmly fixed to the formwork or steel skeleton, and the reinforcement measures around the reserved holes are in place. After completing these inspections, if all items meet the requirements, the next step of concrete pouring can be carried out. In the step nine, Before pouring concrete, it is necessary to conduct a comprehensive and detailed inspection of the formwork, steel bars and embedded steel bars, check whether the formwork is tightly spliced ​​and whether there is a risk of leakage; check whether the number, position, spacing and connection of the steel bars meet the design and specification requirements; check whether the position and firmness of the embedded steel bars meet the construction requirements. Concrete should be poured in layers to ensure that the concrete can fully fill the interior of the formwork. The thickness of each poured layer shall not exceed 300mm to ensure that the concrete can be fully compacted during the vibration process. When vibrating the concrete, use a 30mm diameter handheld vibrator to vibrate evenly. The vibration points should be vibrated every 100mm to avoid missing vibration or over-vibration. The vibration should be dense, and the vibrator should be inserted into the lower layer 100mm to ensure the combination of the upper and lower layers of concrete, with no bubbles or gaps inside.

9. The method for reinforcing the formwork support of a special-shaped concrete trough feeding slope according to claim 1, characterized in that: In the step 10, the formwork can be removed only when the concrete strength reaches the design requirements. The order of formwork removal should follow the principle of supporting first and then removing, and removing the last support first. During the removal process, be careful and cautious to avoid using excessive force or improper methods to damage the concrete surface. For parts that are difficult to remove, they should not be removed forcibly. The removed formwork should be cleaned, sorted and stored in time. In the step 11, use a wrench to rotate the bolt counterclockwise. When the bolt is completely loosened, use pliers to remove the expansion pipe from the hole, use an air cylinder to clean the dust and debris in the bolt hole, and ensure that the bolt hole is clean and dry for sealing. Since the diameter of the bolt hole is small, use No. IV grouting material for sealing. The sealing is flush with the bottom surface of the trough and smoothed with a trowel.

10. The method for reinforcing the formwork support of a special-shaped concrete trough feeding slope according to claim 1, characterized in that: In the step 12, after the formwork is removed, the concrete should be cured immediately to ensure the strength growth of the concrete. The curing time is not less than 7 days, which is the basic requirement to ensure the full development of concrete performance. The curing method can be selected according to the actual situation. Sprinkling curing and covering with plastic film curing should keep the concrete surface moist, but there should be no water accumulation; When covering with plastic film for maintenance, ensure that the film is well sealed. During the maintenance period, check the condition of the concrete regularly and add moisture in time.

Images