Adjustable formwork for road cement concrete construction and construction method thereof

Abstract

The invention provides an adjustable formwork for road cement concrete construction and a construction method thereof, and relates to the field of municipal road engineering. The device comprises a support frame, an elastic adjusting piece, an elastic template and an elastic limiting structure, the multiple supporting frames are sequentially arranged in parallel at intervals, and the multiple adjacent supporting frames are connected through the elastic adjusting pieces to form the light steel framework. The elastic limiting structure is connected to one side wall of the light steel framework, the height of the elastic limiting structure is smaller than that of the light steel framework, and the elastic limiting structure and the light steel framework jointly form a supporting limiting groove used for supporting and limiting the elastic formwork. The elastic formwork is inserted into the supporting limiting groove and connected with the supporting limiting groove in a mortise and tenon joint mode. According to the formwork, the modular assembly design is adopted, the formwork erecting height and curvature can be rapidly adjusted, the formwork can be universally used for common concrete pavement thickness specifications in China, and the cushion block adjusting and mortar blocking procedures are omitted; the turnover rate is higher than that of an existing wood formwork and an existing steel formwork, the resource utilization rate is high, and economic benefits are good.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of municipal road engineering, in particular to a adjustable formwork for road cement concrete construction and a construction method thereof. BACKGROUND

[0002] A concrete construction formwork device (commonly known as formwork or support system) is a temporary or permanent structure used in construction engineering, mainly used to provide support and shaping when pouring concrete.

[0003] The traditional road concrete construction formwork process has been plagued by its inherent defects for a long time: steel or wood formwork installation requires multiple people to assemble bolts and weld corners, and the formwork installation takes a long time of 6-9 m / h; height adjustment relies on manual stacking of wooden wedges or pads, and then sealing with mortar, which not only is inefficient, but also causes cement slurry leakage during pouring, leading to honeycomb surface on the side and even imbalance of side pressure causing formwork expansion; during curve construction, rigid formwork cannot fit the curve and can only be roughly spliced by short formwork within 1 m, and the joint misalignment of more than 8 mm causes the concrete forming surface to be "sawtooth-shaped", which requires additional joint cutting and repair, affecting the road surface flatness (3 m straight ruler detection fluctuation ≥4 mm) and increasing the 20% rework cost; in addition, insufficient anchoring depth of steel pegs (<15 cm) easily leads to overall displacement of the formwork, ultimately causing chain problems such as longitudinal joint straightness exceeding the tolerance and misalignment of pre-embedded force transmission rods.

[0004] In the face of the current situation of increasing irregular intersections and improved mechanical paving speed in the process of urbanization, it is urgent to develop a new formwork system that integrates rapid height adjustment, curvature self-adaptation, and bottom sealing self-adaptation to fundamentally solve the three pain points of efficiency, accuracy, and sealing. SUMMARY

[0005] One of the purposes of the present application is to provide a adjustable formwork for road cement concrete construction and a construction method thereof, aiming to solve the problem of poor use effect of the existing formwork system.

[0006] The technical solution of the present application is: A adjustable formwork for road cement concrete construction, comprising a support frame, an elastic adjusting member, an elastic formwork, and an elastic limiting structure; A plurality of support frames are arranged in parallel and spaced apart, and a plurality of adjacent support frames are connected by the elastic adjusting member to form a light steel skeleton; The elastic limiting structure is connected to one side wall of the light steel skeleton, and the height is less than the height of the light steel skeleton, and together with the light steel skeleton forms a support and limiting groove for supporting and limiting the elastic formwork; The elastic formwork is connected with the support and limiting groove through mortise and tenon joint.

[0007] As a technical scheme of the present application, the support frame comprises a horizontal steel rod, a vertical steel rod and an inclined steel rod; the horizontal steel rod is horizontally arranged; the vertical steel rod is vertically arranged and is vertically installed on one end of the horizontal steel rod; the two ends of the inclined steel rod are respectively connected to the top end of the vertical steel rod and the horizontal steel rod at an angle.

[0008] As a technical scheme of the present application, a connecting hole is formed in the other end of the horizontal steel rod; a fixed pin is installed in the connecting hole.

[0009] As a technical scheme of the present application, a slot is formed in the top end and the bottom end of each vertical steel rod; a fixed hole is formed in the top surface of the slot in the top end and the bottom surface of the slot in the bottom end, and the fixed hole is in communication with the corresponding slot; an insertion block is arranged on the outer wall of the two ends of the elastic adjusting member, and a positioning hole penetrating the top and the bottom is formed in the insertion block; the insertion block is connected to the corresponding slot in a mortise-and-tenon joint, and the corresponding slot is fixed by inserting a fixed rod into the fixed hole and the corresponding positioning hole.

[0010] As a technical scheme of the present application, the length of the elastic adjusting member is 50 cm, the thickness is 2-4 mm, and the elastic adjusting member is made of 65Mn steel sheet which can be freely bent and restored within the range of 0-1.43 degrees.

[0011] As a technical scheme of the present application, the elastic template comprises an ultra-high molecular weight polyethylene plate.

[0012] As a technical scheme of the present application, one side wall of the elastic template is attached to one side wall of the light steel framework, and the other side wall is provided with an L-shaped clamping groove extending along the length direction and matched with the elastic limiting structure.

[0013] As a technical scheme of the present application, a plurality of pull rod holes are formed in the middle part of the elastic template at intervals, and the pull rod holes are located at the center point positions between the adjacent two support frames.

[0014] As a technical scheme of the present application, the elastic limiting structure comprises a connecting plate and a plurality of connecting rods; the connecting plate is vertically arranged and parallel to one side of the light steel skeleton; a plurality of insertion slots corresponding to the connecting rods are arranged at intervals at the lower part of one side of the light steel skeleton, a fixing hole is arranged on the bottom surface of the insertion slot, and the fixing hole is in communication with the corresponding insertion slot; one end of the connecting rod is connected to the connecting plate through an insertion block and an insertion slot, and an insertion block is arranged on the outer wall of the other end, and a positioning hole penetrating the top and bottom is arranged on the insertion block; the insertion block is connected to the corresponding insertion slot in a mortise and tenon joint, and is fixed to the corresponding insertion slot by inserting a fixing rod into the fixing hole and the corresponding positioning hole.

[0015] A construction method using the adjustable road cement concrete construction formwork, comprising: According to the curve radius and length of the construction road, the required number of combinations of the support frame and the elastic formwork is planned; According to the design requirements, a plurality of the support frame and the elastic adjusting piece are spliced: the insertion blocks at both ends of the elastic adjusting piece are respectively embedded in the insertion slots on both sides of the adjacent two support frames, and the fixing rod is embedded in the inner wall of the corresponding insertion slot and the fixing hole at the top end of the insertion block; the insertion blocks at both ends of the connecting rod in the elastic limiting structure are respectively embedded in the insertion slots on one side of the support frame and one side of the connecting plate, and the fixing rod is embedded in the inner wall of the corresponding insertion slot and the fixing hole at the top end of the insertion block; a fixed pin is installed on the other end of the transverse steel rod in the support frame; The elastic formwork is placed in the assembled support limiting groove, so that one side wall of the elastic formwork is fitted with the support frame; the position of the elastic formwork is adjusted, so that the bottom surface of the elastic formwork is fitted with the top surface of the connecting rod, and the inner wall of the L-shaped clamping groove at the lower part of the other side wall of the elastic formwork is fitted with the outer wall of the connecting plate; According to the curve condition of the construction road, the bending angle of the elastic adjusting piece is adjusted by rotating the support frame left and right to adjust the bending angle of the elastic formwork; the support frame is fixed with the lower layer of pavement structure; The concrete pouring operation is carried out on the inner side of the elastic formwork.

[0016] The beneficial effects of the present application are: (1) The application provides a adjustable formwork for road cement concrete construction, which is characterized by the following: a light steel framework is matched with an elastic formwork to provide reliable support for the elastic formwork; the elastic formwork is connected with the support limiting groove through a mortise and tenon joint, so that the elastic formwork of different heights can be quickly replaced and installed according to the requirements of different construction scenes, the height of the formwork can be quickly adjusted, the common domestic concrete pavement thickness specifications can be used, the process of adjusting the cushion block and the mortar plugging process is omitted; the elastic adjusting piece, the elastic formwork and the elastic limiting structure all have the characteristics of elastic adjustment, and the adjacent support frames are connected with each other through the elastic adjusting piece, so that the whole device can be adjusted at any angle within the road curve radius required by the specification, and the device has the characteristics of self-adapting to the construction of roads with different curvatures and different linearities; in addition, the elastic formwork is connected with the support limiting groove through a mortise and tenon joint, and the bottom of the elastic formwork can be sealed.

[0017] (2) The application provides a construction method using the adjustable formwork for road cement concrete construction, which is characterized by the following: the device has high universality and turnover rate, the components can be repeatedly used, the construction process is simplified, and the costs such as the procurement of formwork materials, manpower and material resources are reduced; for example, the cost of formwork materials of a certain project is reduced by about 30% after the method is used, and the construction period is shortened by 40%; at the same time, the construction method reduces the use of mortar, reduces dust and noise pollution, meets the environmental protection requirements, and the repeated use of the formwork reduces construction waste, the production process is more energy-saving, and the sustainable development concept is met; in addition, the construction process is optimized, the construction process is simplified, from the framework splicing, formwork installation to adjustment and fixation, each link is compact and orderly, the waiting time and the workload of repeated labor are reduced, and the overall construction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0019] Figure 1 A schematic diagram of the adjustable formwork for road cement concrete construction provided by the first embodiment of the application; Figure 2 A first angle schematic diagram of the adjustable formwork for road cement concrete construction provided by the first embodiment of the application; Figure 3 A second angle schematic diagram of the adjustable formwork for road cement concrete construction provided by the first embodiment of the application; Figure 4A light steel skeleton schematic diagram provided for the first embodiment of the present application; Figure 5 A light steel skeleton and elastic limiting structure exploded schematic diagram provided for the first embodiment of the present application; Figure 6 A light steel skeleton exploded schematic diagram provided for the first embodiment of the present application.

[0020] Figure legend: 1 - support frame; 2 - elastic adjusting piece; 3 - elastic template; 4 - support limiting groove; 5 - horizontal steel pole; 6 - vertical steel pole; 7 - inclined steel pole; 8 - connecting hole; 9 - fixing pin; 10 - insertion slot; 11 - fixing hole; 12 - insertion block; 13 - positioning hole; 14 - fixing rod; 15 - L-shaped clamping groove; 16 - pull rod hole; 17 - connecting plate; 18 - connecting rod. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.

[0023] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0024] In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0025] Furthermore, in the present application, unless specifically stated and limited otherwise, the first feature is above or below the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is above, over and on the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The first feature is below, under and under the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0026] Furthermore, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0027] In the description of the present application, it should also be noted that, unless otherwise specifically stated and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] First embodiment: Please refer to Figure 1 , with reference to Figures 2 to 6 The present application provides a kind of adjustable road cement concrete construction formwork, it mainly includes support frame 1, elastic adjusting part 2, elastic formwork 3 and elastic limiting structure;Wherein, multiple support frame 1 is sequentially arranged in parallel with interval, and multiple adjacent support frame 1 is connected into light steel skeleton by elastic adjusting part 2;At the same time, elastic limiting structure is connected to the one side wall of light steel skeleton, and height is less than the height of light steel skeleton, and with light steel skeleton jointly constitutes the support limiting groove 4 for supporting and limiting elastic formwork 3;In addition, elastic formwork 3 is inserted in support limiting groove 4, and is mortise and tenon connected with support limiting groove 4.

[0029] Further, the support frame 1 is made of thin steel plate and designed into specific shape and size according to different use requirements, which mainly comprises a horizontal steel rod 5, a vertical steel rod 6 and an inclined steel rod 7; the horizontal steel rod 5 is horizontally arranged; the vertical steel rod 6 is vertically arranged and perpendicularly installed on one end of the horizontal steel rod 5; the two ends of the inclined steel rod 7 are respectively connected to the top end of the vertical steel rod 6 and the horizontal steel rod 5 at an angle. Meanwhile, a connecting hole 8 is formed on the other end of the horizontal steel rod 5; a fixing pin 9 is movably arranged in the connecting hole 8, and the fixing pin 9 is used for fixedly connecting the support frame 1 with the lower road surface structure.

[0030] It should be noted that the opposite two sides of the top end and the bottom end of each vertical steel rod 6 are provided with a slot 10; a fixing hole 11 is formed on the top surface of the slot 10 at the top end and the bottom surface of the slot 10 at the bottom end, and the fixing hole 11 is in communication with the corresponding slot 10; the outer wall of the two ends of the elastic adjusting piece 2 is provided with an insertion block 12, and a positioning hole 13 penetrating the top and the bottom is formed on the insertion block 12; the insertion block 12 is connected with the corresponding slot 10 in a mortise and tenon joint, and is fixed with the corresponding slot 10 by inserting a fixing rod 14 in the fixing hole 11 and the corresponding positioning hole 13.

[0031] It should be noted that the elastic adjusting piece 2 has a length of 50 cm and a thickness of 2-4 mm, and is made of 65Mn steel sheet which can be freely bent and restored within the range of 0-1.43 degrees. One set of light steel frame can be composed of four support frames 1 and three elastic adjusting pieces 2, and the length of the assembled light steel frame is 1.5 m. In other embodiments, one set of light steel frame can be composed of two support frames 1 and one elastic adjusting piece 2, and the length of the assembled light steel frame is 0.5 m. The specific number of splicing is adaptively designed according to the actual application scene and use requirements, and is not limited to the design method in the embodiment.

[0032] The bending degree of the elastic adjusting piece 2 is adjusted by rotating the support frame 1 left and right, so as to adjust the bending degree of the whole light steel frame. One set of support frame 1 and ultra-high molecular weight polyethylene plate are adjusted within a road curve radius of not less than 20 meters, and the adjustment angle is calculated to be between 0-1.43 degrees (i.e. the adjustment angle of the straight line segment is 0 degree, and the adjustment angle of the curve segment with a radius of 20 meters is 1.43 degrees).

[0033] The minimum radius limit value of the standard road line circle curve is 20 m, and the adjustment angle is calculated according to the degree of bending required by a 50 cm long section to fit the minimum circle curve radius. The smaller the circle curve radius, the greater the angle of rotation required. Therefore, the specific calculation process of the maximum adjustment angle of the single elastic adjusting piece 2 is as follows: (1) L = 50 cm = 0.5 m, R = 20 m; (2) The radian of the arc that needs to be rotated when calculating the minimum circle curve = L / R = 0.5 / 20 = 0.025 rad; (3) Convert the above radian to degrees = 0.025 * (180 / π) = 0.025 * (180 / 3.1415926535) = 0.025 * 57.2958 = 1.43 degrees.

[0034] It should be noted that in this embodiment, the elastic template 3 is made of ultra-high molecular weight polyethylene plate, which is made of qualified UHMW-PE material. According to the common thickness of domestic concrete pavement, 18cm, 20cm, 22cm, 25cm, 28cm, different height UHMW-PE plate is prefabricated, which ensures that the surface is flat and has no obvious unevenness. For example, for a concrete pavement with a thickness of 20cm, a corresponding height of UHMW-PE plate is prefabricated to match accurately. The weight of the ultra-high molecular weight polyethylene plate is light, and the plate of 20mm thick and 1m² weighs only about 18kg, which is much lighter than the same area of steel, greatly reducing the difficulty of carrying and installation, and improving the construction efficiency. Moreover, its cold bending performance is excellent, and it can easily adapt to the curve section of the road without complex cutting and splicing. Furthermore, its surface adsorption is low and easy to demold, which can ensure the smoothness of the concrete surface. In addition, one side wall of the elastic template 3 is attached to one side wall of the light steel skeleton, and the other side wall is provided with an L-shaped slot 15 extending along the length direction and matched with the elastic limiting structure, and the inner wall of the L-shaped slot 15 is completely attached to the outer wall of the connecting plate 17.

[0035] Therefore, the light steel skeleton and the elastic template 3 made of ultra-high molecular weight polyethylene complement each other, which can provide reliable support for the template, and the modular assembly between them can quickly adjust the formwork height and curvature, and the bottom of the elastic template 3 is sealed, which can also be used for different concrete pavement thickness specifications commonly used in China, eliminating the process of adjusting the cushion block and mortar plugging; It has good wear resistance, higher turnover rate than existing wooden templates and steel templates, high resource utilization rate and good economic benefit.

[0036] It should be noted that in this embodiment, the elastic template 3 is provided with a plurality of spaced-apart pull rod holes 16 in the middle, and the pull rod holes 16 are located at the center point position between the adjacent two support frames 1. In addition, for the pavement structure without pull rod, the ultra-high molecular weight polyethylene plate without pull rod hole 16 can also be prefabricated in batches.

[0037] Further, the elastic limiting structure comprises a connecting plate 17 and a plurality of connecting rods 18; wherein the connecting plate 17 is made of thin steel plate and is vertically arranged and parallel to one side of the light steel skeleton, and the outer wall thereof is completely fitted with the inner wall of the L-shaped clamping groove 15 at the lower part of the UHMW-PE plate; meanwhile, a plurality of insertion slots 10 corresponding to the connecting rods 18 are arranged at intervals at the lower part of one side of the light steel skeleton, and a fixing hole 11 is arranged on the bottom surface of the insertion slot 10, and the fixing hole 11 is in communication with the corresponding insertion slot 10; in addition, one end of the connecting rod 18 is connected to the connecting plate 17 through the insertion block 12 and the insertion slot 10, and the outer wall of the other end is provided with an insertion block 12, and a positioning hole 13 penetrating through the top and bottom is arranged on the insertion block 12; the insertion block 12 is connected with the corresponding insertion slot 10 in a mortise and tenon joint manner, and is fixed with the corresponding insertion slot 10 by inserting the fixing rod 14 into the fixing hole 11 and the corresponding positioning hole 13.

[0038] In summary, the application provides a template for road cement concrete construction, which is designed in cooperation with a light steel skeleton and an elastic template 3 to provide reliable support for the elastic template 3. Since the elastic template 3 is connected with the support limiting groove 4 in a mortise and tenon joint manner, it can quickly replace and install elastic templates 3 of different heights according to the needs of different construction scenes, achieving the effect of quick height adjustment, and can be used for common domestic concrete pavement thickness specifications, eliminating the need for cushion adjustment and mortar plugging procedures. Moreover, since the elastic adjusting piece 2, the elastic template 3, and the elastic limiting structure all have the characteristics of elastic adjustment, and the adjacent support frames 1 are connected with each other through the elastic adjusting piece 2, the entire device can be adjusted at any angle within the road curve radius required by the specification, and has the characteristics of self-adapting to the construction of roads with different curvatures. Furthermore, since the elastic template 3 is connected with the support limiting groove 4 in a mortise and tenon joint manner, it can achieve the effect of sealing the bottom of the elastic template 3. The template is simple to make and low in cost, and the construction method is simple and easy to understand and operate. It not only can greatly save manpower, but also can improve construction efficiency and construction precision, and it is reasonable in technology, economically feasible, and ideal in effect. At the same time, the device has high universality and turnover rate, and each component can be reused, and the simplified construction process reduces the costs such as template material procurement, manpower and material consumption. For example, after a certain project adopts this method, the template material cost is reduced by about 30%, and the construction period is shortened by 40%. At the same time, this construction method reduces the use of mortar, reduces dust and noise pollution, meets environmental protection requirements, and the repeated use of the template reduces construction waste, the production process is also more energy-saving, and it is in line with the concept of sustainable development. Moreover, it optimizes the construction process and simplifies the construction procedure, from skeleton splicing, template installation to adjustment and fixation, each link is compact and orderly, reduces waiting time and repeated labor workload, and improves overall construction efficiency.

[0039] Second embodiment: The present application provides a construction method using the adjustable road cement concrete construction template as described in the first embodiment, the construction method mainly comprising: Construction preparation: Prepare the required number of support frames 1, elastic adjustment members 2, elastic formwork 3, and elastic limiting structures. Determine the concrete pavement thickness based on the design requirements of the construction road and select UHMW-PE panels of the corresponding height. For example, if the designed concrete pavement thickness is 22 cm, select UHMW-PE panels with a height of 22 cm. Furthermore, plan the required number of support frame 1 and elastic formwork 3 combinations based on the curve radius and length of the construction road, ensuring that a set of support frames 1 and ultra-high molecular weight polyethylene panels can be adjusted arbitrarily within a road curve radius of no less than 20 meters (the adjustment angle for straight sections is 0 degrees, and the adjustment angle for curved sections with a radius of 20 meters is 1.43 degrees) to meet construction requirements. Splicing of light steel frame: Splice the support frame 1 according to the design requirements, that is, splice multiple support frames 1 into a group, and during the splicing process, respectively insert the plug blocks 12 at both ends of the elastic adjustment member 2 into the slots 10 on both sides of the two adjacent support frames 1, and then insert the fixing rod 14 into the corresponding inner wall of the slot 10 and the fixing hole 11 at the top of the plug block 12 to complete the connection between the elastic adjustment member 2 and the support frame 1, and repeat this operation to connect the four support frames 1 into a group in sequence; respectively insert the plug blocks 12 at both ends of the connecting rod 18 in the elastic limiting structure into the slots 10 on one side of the support frame 1 and one side of the connecting plate 17, and use the fixing rod 14 to insert the corresponding inner wall of the slot 10 and the fixing hole 11 at the top of the plug block 12 to complete the connection between the connecting rod 18, the support frame 1 and the connecting plate 17; according to the actual installation situation, movably insert the fixing pin 9 into the connecting hole 8 on the other end of the transverse steel rod 5 in the support frame 1 so that it can be subsequently fixedly connected to the underlying pavement structure; Installation of UHMW-PE board: Place the elastic formwork 3 in the assembled support limit groove 4 so that one side wall of the elastic formwork 3 fits in with the support frame 1; adjust the position of the elastic formwork 3 so that the bottom surface of the elastic formwork 3 fits in with the top surface of the connecting rod 18, and make the inner wall of the L-shaped slot 15 at the lower part of the other side wall of the elastic formwork 3 completely fit with the outer wall of the connecting plate 17 to ensure that the connecting surfaces of the two are completely in the same plane without bumps; according to the design requirements of the construction road, install the tie rod at the tie rod hole 16 in the middle of the elastic formwork 3. The tie rod hole 16 is set at the center point between two adjacent support frames 1 to ensure the stability of the installation. The specific requirements are determined according to the actual engineering requirements. For cement concrete pavements that do not require tie rods, UHMW-PE boards without tie rod holes 16 can also be prefabricated; Template adjustment and fixing: according to the curve condition of the construction road, the bending degree of the elastic adjusting part 2 is adjusted by rotating the support frame 1 left and right, so as to adjust the bending degree of a group of support frames 1 and the elastic template 3. Since the specification requires that the road curve radius generally cannot be less than 20 m, the light steel skeleton and the UHMW-PE plate can be adjusted arbitrarily in this range, so that it meets the linear requirements of the road within the road curve radius of not less than 20 m; after the adjustment is completed, the fixing pin 9 is used to fix the support frame 1 and the lower pavement structure, so as to ensure the stability of the whole construction template; Concrete pouring: concrete pouring operation is carried out on the inner side of the installed and adjusted fixed adjustable road cement concrete construction template, and during the pouring process, attention is paid to controlling the pouring speed and height of the concrete to avoid excessive impact on the template device, for example, the layered pouring method is adopted, and the pouring height of each layer is controlled to be about 30 cm; at the same time, the concrete is vibrated and compacted using a vibrating device to ensure the quality of the concrete, and the vibrating time is reasonably controlled according to the performance of the concrete and the pouring position, generally for 20-30 s; Template removal and maintenance: after the concrete reaches the design strength, the various structures in the adjustable road cement concrete construction template are removed in sequence according to the order of removing the non-main force components first and then removing the main force components, that is, the connecting components such as the fixing pin 9, the elastic adjusting part 2, the plug 12, the fixing rod 14, etc. are removed in sequence; the ultrahigh molecular weight polyethylene plate, the support frame 1, the connecting rod 18 and other components are disassembled from the concrete structure for cleaning and maintenance for subsequent repeated use; during cleaning, special tools are used to remove the concrete residues on the surface of the template, and for stubborn stains, appropriate cleaning agents can be used for cleaning; during maintenance, the template is stored in a dry and ventilated place to avoid rusting due to moisture, so as to be reused subsequently.

[0040] As can be seen from the above, the application provides a construction method using an adjustable road cement concrete construction template, which has high universality and turnover rate, and each component can be reused, and the simplified construction process reduces the costs such as template material procurement, labor and material consumption, etc. For example, the template material cost of a certain project using this method is reduced by about 30%, and the construction period is shortened by 40%; at the same time, the construction method reduces the use of mortar, reduces dust and noise pollution, meets the environmental protection requirements, and the template reuse reduces construction waste, the production process is more energy-saving, and it is in line with the concept of sustainable development; and it optimizes the construction process and simplifies the construction process, from skeleton splicing, template installation to adjustment and fixing, each link is compact and orderly, reduces the waiting time and the workload of repeated labor, and improves the overall construction efficiency.

[0041] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable form for road cement concrete construction, characterized by, The support frame, the elastic adjusting piece, the elastic template and the elastic limiting structure are included. A plurality of the support frames are arranged in parallel and at intervals, and a plurality of adjacent support frames are connected by the elastic adjusting pieces to form a light steel framework. The elastic limiting structure is connected to one side wall of the light steel framework, and the height of the elastic limiting structure is less than the height of the light steel framework, and the elastic limiting structure and the light steel framework together form a support limiting groove for supporting and limiting the elastic template. The elastic template is connected to the support limiting groove in a mortise and tenon joint.

2. The adjustable form for road cement concrete construction according to claim 1, characterized in that, The support frame includes a horizontal steel rod, a vertical steel rod and an inclined steel rod.

3. The adjustable form for road cement concrete construction according to claim 2, characterized in that, A connecting hole is formed in the other end of the horizontal steel rod.

4. The adjustable form for road cement concrete construction according to claim 2, characterized in that, A fixed pin is installed in the connecting hole.

5. The adjustable form for road cement concrete construction according to claim 1, wherein A plug-in slot is formed in the top end and the bottom end of each vertical steel rod.

6. The adjustable form for road cement concrete construction according to claim 1, wherein The elastic adjusting piece is made of 65Mn steel sheet which can be freely bent and restored within the range of 0-1.43 degrees.

7. The adjustable form for road cement concrete construction according to claim 1, wherein The elastic template includes an ultra-high molecular weight polyethylene plate.

8. The adjustable form for road cement concrete construction according to claim 1, wherein One side wall of the elastic template is attached to one side wall of the light steel framework, and the other side wall is provided with an L-shaped clamping slot extending along the length direction and matched with the elastic limiting structure.

9. The adjustable form for road cement concrete construction according to claim 1, wherein A plurality of spaced-apart pull rod holes are formed in the middle of the elastic template, and the pull rod holes are located at the center point positions between adjacent support frames.

10. A construction method using the adjustable formwork for road cement concrete construction according to any one of claims 1 to 9, characterized by, The elastic limiting structure includes a connecting plate and a plurality of connecting rods. The connecting plate is arranged vertically and parallel to one side of the light steel framework. The connecting rods are connected to the connecting plate by plug-in blocks and slots, and the other end of the connecting rods is provided with a plug-in block. The support frame, the elastic adjusting piece, the elastic template and the elastic limiting structure are included. According to the curve radius and length of the construction road, the required combination number of the support frame and the elastic template is planned. A plurality of the support frames and the elastic adjusting members are spliced according to design requirements: the insertion blocks at two ends of the elastic adjusting members are respectively embedded into the insertion slots on two sides of two adjacent support frames, and the fixing rods are embedded into the fixing holes at the top ends of the insertion blocks and the inner walls of the corresponding insertion slots; the insertion blocks at two ends of the connecting rods in the elastic limiting structures are respectively embedded into the insertion slots on one side of the support frame and one side of the connecting plate, and the fixing rods are embedded into the fixing holes at the top ends of the insertion blocks and the inner walls of the corresponding insertion slots; a fixed pin is installed on the other end of the transverse steel rod in the support frame; The elastic template is placed in the assembled support limiting slot, so that one side wall of the elastic template is attached to the support frame; The position of the elastic template is adjusted, so that the bottom surface of the elastic template is attached to the top surface of the connecting rod, and the inner wall of the L-shaped clamping slot at the lower part of the other side wall of the elastic template is attached to the outer wall of the connecting plate; According to the curve condition of the construction road, the bending angle of the elastic adjusting member is adjusted by rotating the support frame left and right, so as to adjust the bending angle of the elastic template; the support frame is fixed with the lower layer pavement structure; The concrete pouring work is carried out on the inner side of the elastic template.

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