Sliding form construction concrete curing system and method

Abstract

The present invention discloses a slip form construction concrete curing system and method, belonging to the field of building construction. The concrete curing system includes a curing membrane cloth, a horizontal support, a rope winding and unwinding device, a pulling rope and a nozzle. By arranging a horizontal support on one side of the flexible curing membrane cloth, connecting the horizontal support with the pulling rope, and controlling the lowering or recovery of the pulling rope through the rope winding and unwinding device, the curing membrane cloth can be controlled to cover the concrete after it is removed from the formwork, and the surface of the concrete can be sprayed and cured by controlling the nozzle. Moreover, by correlating the height of the curing membrane cloth with the floor height and pouring time of the concrete pouring, the total curing duration from the concrete entering the formwork to the completion of curing can be ensured, which is beneficial to the strength growth of the concrete and improves the quality of the concrete. By arranging an electromagnetic spring at the end of the horizontal support, the curing membrane cloth can be overlapped and form an integral body. Especially in the construction of silos, the perimeter of the curing membrane cloth can also be adjusted through the electromagnetic spring, achieving the effect of reducing the frictional resistance during the climbing process.

Description

Technical Field

[0001] The present invention relates to a slip form construction concrete curing system and method, belonging to the field of building construction. Background Art

[0002] In the construction of buildings or structures, slip form construction is a relatively common construction method. As Figure 1 shown, the climbing mechanism 2 can drive the main cross beam 3 to climb along the guide rail columns 1. A main column 4 is arranged below the main cross beam 3. The main column 4 is connected with a construction platform 5. A steel formwork 7 is also arranged on the main column 4 through a formwork connecting piece 6. In slip form construction, the steel formwork is lifted upward together with the main column, and the concrete below the steel formwork still needs to be cured after it comes out of the form. How to cure the concrete without affecting the climbing of the formwork is a construction problem to be solved urgently. Summary of the Invention

[0003] Aiming at the problem that the concrete still needs to be cured after coming out of the form in slip form construction in the prior art, the present invention provides a slip form construction concrete curing system and method, which can cure the concrete without affecting the climbing of the slip form.

[0004] To solve the above technical problems, the present invention includes the following technical solutions:

[0005] A slip form construction concrete curing system for silo concrete construction, comprising a curing membrane cloth, a horizontal support, a rope winding and unwinding device, a pulling rope and a nozzle;

[0006] A plurality of horizontal supports are arranged at intervals along the height direction on the side of the curing membrane cloth away from the concrete structure. A plurality of vertical through holes are arranged at intervals along the length direction of the horizontal support. A pulling rope is arranged in the through hole. The top of the pulling rope is connected with a rope winding and unwinding device, and the rope winding and unwinding device is arranged on the slip form;

[0007] A plurality of nozzles are also arranged at intervals on the curing membrane cloth. The nozzles on the side of the curing membrane cloth away from the concrete structure are communicated with a water supply device;

[0008] The curing membrane cloth is arranged below the formwork of the slip form. By pulling the horizontal support through the rope winding and unwinding device, the height of the concrete curing area can be increased or decreased for the curing membrane cloth;

[0009] A plurality of parallel curing membrane cloths are arranged below the slip form formwork. The ends of the corresponding horizontal supports on the adjacent curing membrane cloths are connected by electromagnetic springs; the electromagnetic springs can change the perimeter of the enclosed curing membrane cloth to make the curing membrane cloth cover or move away from the concrete surface.

[0010] Further, the horizontal support is a steel wire rope or a horizontally arranged slender rod.

[0011] Furthermore, a maintenance operation platform and a repair operation platform are suspended below the formwork.

[0012] Correspondingly, the present invention also provides a slip form construction concrete curing method, which uses the slip form construction concrete curing system described above. The method includes the following steps:

[0013] Step 1: Install the slip form and install the concrete curing system at the bottom of the slip form.

[0014] Step 2: Pour the concrete in layers. When the formwork climbs up one layer of pouring height, lower the pulling rope by one layer height through the rope winding and unwinding device, so that the curing membrane cloth covers the concrete after it comes out of the form. Control the nozzle to spray the concrete surface as needed.

[0015] Step 3: When the curing membrane cloth is lowered to be fully unfolded, when the formwork climbs up one layer of pouring height, first control the electromagnetic spring to extend or compress, change the perimeter of the curing membrane cloth, and make the curing membrane cloth away from the concrete surface. The curing membrane cloth remains unfolded and climbs up with the slip form. After climbing in place, then control the electromagnetic spring to compress or extend, change the perimeter of the curing membrane cloth, and make the curing membrane cloth cover the concrete surface.

[0016] Due to the above technical solutions, compared with the prior art, the present invention has the following advantages and positive effects: The slip form construction concrete curing system provided by the present invention sets a horizontal support on one side of the flexible curing membrane cloth, connects the horizontal support with the pulling rope, and controls the lowering or recycling of the pulling rope through the rope winding and unwinding device, so as to control the curing membrane cloth to cover the concrete after it comes out of the form, and spray and cure the concrete surface by controlling the nozzle. Moreover, by associating the height of the curing area with the layer height and pouring time of the concrete pouring, the total curing duration from the concrete entering the form to the completion of curing can be guaranteed, which is beneficial to the strength growth of the concrete and improves the quality of the concrete. By setting an electromagnetic spring at the end of the horizontal support, the curing membrane cloth can be overlapped and form an integral body, improving the curing effect. Especially in the construction of silos, the electromagnetic spring can also control the perimeter of the curing membrane cloth to reduce the frictional resistance during the climbing process. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the concrete curing system in slip form construction in an embodiment of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the concrete curing system in an embodiment of the present invention;

[0019] Figure 3 It is a schematic diagram of the curing membrane cloth, horizontal support, pulling rope, nozzle and foldable water pipe in an embodiment of the present invention;

[0020] Figure 4Schematic diagram of a drawstring, steel wire rope, and curing film in an embodiment of the present invention.

[0021] The reference numerals in the figure are as follows:

[0022] 1 - Guide rail column; 2 - Climbing mechanism; 3 - Main cross beam; 4 - Main column; 5 - Construction platform; 6 - Formwork connector; 7 - Steel formwork; 8 - Curing operation platform; 9 - Repair operation platform;

[0023] 10 - Curing system; 11 - Curing film; 12 - Horizontal support; 13 - Rope winding and releasing device; 14 - Drawstring; 15 - Sprinkler head; 16 - Foldable hose; 17 - Electromagnetic spring. Detailed implementation manners

[0024] The slip form construction concrete curing system and method provided by the present invention are further described in detail below in conjunction with the accompanying drawings and specific embodiments. In combination with the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, only for conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention.

[0025] Combined with Figures 1 to 4 As shown, the slip form construction concrete curing system provided in this embodiment includes a curing film 11, a horizontal support 12, a rope winding and releasing device 13, a drawstring 14, and a sprinkler head 15.

[0026] The curing film 11 can be made of a plastic film, a woven fabric, or other flexible heat preservation devices, and is covered on the surface of the concrete out of the form. On the side of the curing film away from the concrete structure, a plurality of horizontal supports 12 are arranged at intervals in the height direction. The horizontal supports 12 are provided with a plurality of radial through holes at intervals in the length direction, and drawstrings 14 are arranged in the through holes. The top of the drawstring 14 is connected to a rope winding and releasing device 13, and the rope winding and releasing device 13 is arranged on the slip form. By pulling the horizontal support through the rope winding and releasing device, the curing film can be raised or lowered. The horizontal support can be a steel wire rope or a horizontally arranged slender rod.

[0027] A plurality of sprinkler heads 15 are also arranged at intervals on the curing film 11. A foldable hose 16 is arranged on the side of the curing film away from the concrete structure. The foldable hose is communicated with the sprinkler head, and the foldable hose is also connected to a water supply device. The water supply device generally includes a water pipe, a water pump, and a water tank. By way of example, the foldable hose can be a corrugated pipe or other hoses.

[0028] In a specific embodiment, a slip form is used for the construction of silo concrete. A number of curing film cloths are arranged in parallel below the slip form template. The corresponding horizontal supports 12 on adjacent curing film cloths are connected by electromagnetic springs 17. The electromagnetic springs can change the perimeter of the enclosed curing film cloth. For example, for the outside of the silo, after the electromagnetic springs are tightened, the curing film cloth can be attached to the outer wall of the silo to cure the concrete. After the electromagnetic springs are extended, the perimeter of the curing film cloth increases, facilitating the formwork to pull the curing film cloth up together. For the inner wall of the silo, the electromagnetic springs are initially in an extended state, and the curing film cloth covers the concrete after it is removed from the formwork. When the curing film cloth needs to climb, the electromagnetic springs are tightened to reduce the perimeter of the curing film cloth, separating the curing film cloth from the concrete and reducing the friction during climbing. The electromagnetic spring is a spring component that works in coordination with electromagnetic elements in the electromagnetic system. The spring and the electromagnetic force form a dynamic balance system, storing / releasing energy through deformation to achieve precise control of mechanical actions. The main innovation of this embodiment lies in using this structure of the electromagnetic spring to control the perimeter of the curing film cloth, achieving the effect of reducing the friction of the curing film cloth during the climbing process.

[0029] In a specific embodiment, a curing operation platform and a repair operation platform are suspended below the formwork.

[0030] The method for curing concrete using the slip form construction concrete curing system includes the steps of:

[0031] Step 1: Install the slip form and install the concrete curing system at the bottom of the slip form.

[0032] Step 2: Pour the concrete in layers. When the formwork climbs up one layer of pouring height, lower the pull rope by one layer height through the rope winding and unwinding device so that the curing film cloth covers the concrete after it is removed from the formwork, and control the spray head to spray the concrete surface as needed.

[0033] Step 3: When the curing film cloth is lowered to be fully unfolded, when the formwork climbs up one layer of pouring height, first control the electromagnetic springs to extend or compress to change the perimeter of the curing film cloth, making the curing film cloth away from the concrete surface, and the curing film cloth remains in the unfolded state and climbs up with the slip form; after climbing in place, then control the electromagnetic springs to compress or extend to change the perimeter of the curing film cloth, making the curing film cloth cover the concrete surface.

[0034] In a specific embodiment, the slip-form concrete construction is divided into three working sections: the pouring section, the curing section, and the patching section. The three working sections are successively constructed in a 24-hour continuous flow from top to bottom. The heights of the three working sections are 1.2 m, 2.4 m, and 1.2 m respectively. The concrete is poured in layers, with each layer having a thickness of 0.3 m. Each layer is poured every 2 hours. The slip-form lifting speed is 0.15 m / h, and the form height is 1.2 m. The time from the concrete entering the form to leaving the form is 1.2÷0.15 = 8 h. Referring to the temperature conditions, the concrete strength can reach the required strength for leaving the form (i.e., 0.2~0.4 N / mm 2 )). The curing section is set to 2.4 m, so 2.4÷0.15 = 16 h. The total curing time of the concrete needs to be controlled at 24 hours. The concrete structure is constructed from the bottom upwards. The height of the initially formed concrete leaving the form is 0.3 m. At this time, only the curing membrane needs to be lowered by 0.3 m. The slip-form climbs upwards by 0.3 m every 2 hours, and the curing membrane is lowered by 0.3 m accordingly, until the height of the curing membrane is lowered to 2.4 m. After that, the curing membrane remains in a fully unfolded state and climbs upwards synchronously with the slip-form, so that the curing time of the concrete after leaving the form can always be maintained at 16 hours. The sprinkler is controlled to spray and cure the concrete surface according to needs or set time. A horizontal support is arranged every 0.3 m, which is convenient for controlling the lowering height of the curing membrane. Until the slip-form reaches the top and the entire concrete structure is constructed, the pull rope is lifted by 0.3 m every two hours. Then the horizontal support is lifted by one layer every 2 hours from bottom to top, driving the curing membrane to be lifted by one layer until the curing membrane is completely lifted, and then all the concrete is cured.

[0035] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0036] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A sliding form construction concrete curing system for silo concrete construction, characterized in that, It includes a curing film cloth, horizontal supports, a rope winding and releasing device, a pulling rope and a nozzle; On one side of the curing film cloth away from the concrete structure, a number of horizontal supports are arranged at intervals in the height direction. A number of vertical through holes are arranged at intervals in the length direction of the horizontal supports. A pulling rope is arranged in the through holes. The top of the pulling rope is connected to a rope winding and releasing device, and the rope winding and releasing device is arranged on the slip form; A number of nozzles are also arranged at intervals on the curing film cloth. The nozzles on the side of the curing film cloth away from the concrete structure are communicated with a water supply device; The curing film cloth is arranged under the formwork of the slip form. By pulling the horizontal supports through the rope winding and releasing device, the height of the curing film cloth in the concrete curing area can be raised or lowered; A number of parallel curing film cloths are arranged under the slip formwork. The ends of the corresponding horizontal supports on adjacent curing film cloths are connected by electromagnetic springs; the electromagnetic springs can change the perimeter of the enclosed curing film cloth, so that the curing film cloth covers or is away from the concrete surface.

2. The slip form construction concrete curing system according to claim 1, wherein The horizontal support is a steel wire rope or a horizontally arranged slender rod.

3. The slip form construction concrete curing system according to claim 1, wherein A curing operation platform and a repair operation platform are suspended under the formwork.

4. A concrete curing method for slip form construction, characterized in that, Using the slip form construction concrete curing system according to any one of claims 1 to 3, the method comprises the following steps: Step 1, install the slip form and install the concrete curing system at the bottom of the slip form; Step 2, pour the concrete in layers. When the formwork climbs up one layer of pouring height, lower the pulling rope by one layer of height through the rope winding and releasing device, so that the curing film cloth covers the concrete after it comes out of the form. Control the nozzle to spray the concrete surface as needed; Step 3, when the curing film cloth is lowered to be fully unfolded, when the formwork climbs up one layer of pouring height, first control the electromagnetic spring to extend or compress, change the perimeter of the curing film cloth, so that the curing film cloth is away from the concrete surface, and the curing film cloth keeps the unfolded state and climbs up with the slip form; after climbing in place, then control the electromagnetic spring to compress or extend, change the perimeter of the curing film cloth, so that the curing film cloth covers the concrete surface.

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