A thermal insulation formwork and maintenance system for bridge construction in high-altitude and cold regions

Abstract

This invention belongs to the field of concrete construction and discloses a thermal insulation formwork and curing system for bridge construction in high-altitude, cold regions. The formwork is filled with thermally conductive filler, which covers thermally conductive pipes located inside the formwork with their ends extending out. Four formwork panels together form a square formwork frame. The thermally conductive pipes on the four formwork panels are connected end-to-end via a central pipe, and the two ends of the thermally conductive pipes are connected to a hot water circulation component to create heated circulating water within the thermally conductive pipes on the four formwork panels. The formwork of this invention has excellent thermal insulation performance. By circulating heating on the formwork, the setting time of the concrete components of the bridge is effectively reduced, and freezing is prevented. The curing system of this invention uses heating of the formwork for a period of time before demolding for curing, further improving the safety and quality of bridge construction.

Description

Technical Field

[0001] This invention belongs to the field of concrete construction, specifically relating to a thermal insulation formwork and curing system for bridge construction in high-altitude and cold regions. Background Technology

[0002] Concrete precasting construction in high-altitude, cold regions faces severe climatic conditions, such as extreme cold, thin air, strong winds, and heavy snow. Under these extreme conditions, the construction safety and quality of bridge concrete components are greatly challenged. In particular, the large temperature differences, freeze-thaw resistance, cracking resistance, and spalling resistance encountered in bridge concrete pouring in cold environments seriously affect the construction period, project quality, and durability. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a thermal insulation formwork and maintenance system for bridge construction in high-altitude, cold regions, thereby resolving the issues in the prior art. To achieve the aforementioned objectives, the technical solution adopted by this invention is as follows:

[0004] A thermal insulation template for bridge construction in high-altitude and cold regions is provided. The template is filled with thermally conductive filler, which covers thermally conductive pipes located inside the template with both ends extending out of the template. Four templates together form a square template frame. The thermally conductive pipes on the four templates are connected end to end through a central pipe. The thermally conductive pipes at both ends are connected to a hot water circulation component to form heated circulating water within the thermally conductive pipes on the four templates.

[0005] Furthermore, the template includes an outer shell and an inner plate. A cavity is provided inside the outer shell, and the heat-conducting pipe and the heat-conducting filler are both disposed in the cavity. The inner plates on the four templates are detachably connected. Several heat-conducting protrusions are fixedly connected to the outer side of the inner plate. The inner side of the outer shell is provided with slots that are adapted to the several heat-conducting protrusions. The several heat-conducting protrusions are inserted into the slots one by one.

[0006] Furthermore, the portion of the heat-conducting pipe within the cavity has a curved serpentine tube structure, with several heat-conducting protrusions located within the recessed portion of the serpentine tube structure.

[0007] Furthermore, the two ends of the template are connected to two other adjacent templates through a connecting mechanism; the connecting mechanism includes an L-shaped block, which fits at the included angle of the ends of two adjacent templates, and the two ends of the L-shaped block are respectively threaded with screws, the two screws are vertically arranged, and the two ends of the template are respectively fixedly connected with fixing blocks, and the two screws are respectively inserted into the corresponding fixing blocks, so that when the screws are rotated, the template is pushed to move.

[0008] A bridge construction and maintenance system for high-altitude cold regions includes a hot water circulation component comprising a drain pipe, an inlet pipe, and a heating water tank. Heat-conducting pipes at both ends are connected to the drain pipe and the inlet pipe, respectively. Pump bodies are installed on the inlet pipe and the inlet pipe, and the heating water tank contains circulating water and a heating device.

[0009] Furthermore, multiple template frames are provided, and the multiple template frames are distributed in a rectangular array. The heat-conducting pipes inside the templates on the multiple template frames are connected in series, and the two ends of the series heat-conducting pipes are connected to a drain pipe and a water inlet pipe.

[0010] Furthermore, an automatic spraying assembly is installed above the multiple template frames for spraying and curing concrete.

[0011] Furthermore, multiple template frames are arranged on a support platform, and an annular water tank is provided on the support platform. The multiple template frames are located inside the annular water tank. The annular water tank is connected to a sedimentation tank through a return water pipe, and a pump body is provided on the return water pipe.

[0012] Furthermore, the sedimentation tank is connected to the heating water tank via a connecting pipe, and a pump body is installed on the connecting pipe.

[0013] Furthermore, a windbreak is provided on the support platform, and multiple template frames are located inside the windbreak; the automatic sprinkler assembly includes a sprinkler pipe, which is fixed to the top of the windbreak, and multiple sprinkler heads are provided on the sprinkler pipe. The sprinkler pipe is connected to the heating water tank through an output pipe.

[0014] The present invention has the following beneficial effects: The template of the present invention has excellent thermal insulation performance. By circulating heating on the template, the setting time of the concrete components of the bridge is effectively reduced, and icing is prevented. The curing system of the present invention uses heating of the template to maintain its temperature for a period of time before demolding, further improving the safety and quality of bridge construction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the maintenance system of the present invention;

[0016] Figure 2 A top-view diagram of the maintenance system;

[0017] Figure 3 This is a top view diagram of the template;

[0018] Figure 4 This is a top sectional view of the template;

[0019] Figure 5 This is a side sectional view of the template;

[0020] Figure 6 This is a schematic diagram showing the distribution relationship between the heat pipes and the heat-conducting filler. Detailed Implementation

[0021] The following will be based on embodiments of the present invention. Figures 1-6 The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0022] like Figures 3-6 A thermal insulation template for bridge construction in high-altitude cold regions is disclosed. The template 1 is filled with thermally conductive filler 108, which covers thermally conductive pipes 104 located inside the template 1 with both ends extending out of the template 1. Four templates 1 together form a hollow square template frame, the hollow part of which is used for pouring concrete 7. The thermally conductive pipes 104 on the four templates 1 are connected end to end through a middle pipe 103, and the thermally conductive pipes 104 at both ends are connected to a hot water circulation component to form heated circulating water in the thermally conductive pipes 104 on the four templates 1.

[0023] Specifically, the thermally conductive filler 108 is made of existing technology, such as aluminum oxide, magnesium oxide, zinc oxide, aluminum nitride, boron nitride, silicon carbide, etc. The two ends of the heat-conducting pipe 104 extend from the top of the template 1, and the portion of the heat-conducting pipe 104 inside the template 1 is filled with the thermally conductive filler 108. The hot water circulation assembly inputs heated circulating water to one end of the heat-conducting pipe 104 on the four templates 1. The circulating water circulates through the heat-conducting pipe 104 inside the four templates 1, and through the heat-conducting filler 108, heats the template 1. This allows for continuous heat preservation during and after the pouring of concrete 7. Compared to existing technologies, this invention has superior heat preservation performance. By circulating heating on the template 1, the setting time of the concrete components of the bridge is effectively reduced, and icing is prevented.

[0024] Additionally, it should be noted that the attached drawings only show one type of concrete 7 structure, namely the cubic solid pier structure. By changing the different shapes and distribution structures of the template 1, the concrete 7 can be cast into various shapes, such as single-box single-cell and single-box multi-cell structures of bridges. This invention encompasses concrete components of the above-mentioned shapes and structures, and their specific structures are not shown in the attached drawings here.

[0025] Furthermore, the template 1 includes an outer shell 106 and an inner plate 107. The outer shell 106 has a cavity, and the heat-conducting pipe 104 and the heat-conducting filler 108 are both disposed in the cavity. The inner plates 107 on the four templates 1 are detachably connected. Several heat-conducting protrusions 109 are fixedly connected to the outer side of the inner plate 107. The inner side of the outer shell 106 is provided with slots 110 that are adapted to the several heat-conducting protrusions 109. The several heat-conducting protrusions 109 are inserted into the slots 110 one by one.

[0026] The four inner panels 107 are connected by screws to form a stable structure, and are sealed with sealant coatings, sealing rings, and other components. Together, the four inner panels 107 form a hollow structure, into which concrete 7 is poured. Additionally, the bottom of the four inner panels 107 is connected to a base plate 111 by screws. During construction, the four inner panels 107 and the base plate 111 are first fixed, and then the outer shell 106 is installed onto the outer side of the corresponding inner panel 107, so that the heat-conducting protrusions 109 are engaged in the corresponding slots 110. Afterwards, concrete 7 is poured, and hot water circulates between the formwork 1s through a water circulation component to insulate the concrete 7.

[0027] The engagement of the slot 110 and the heat-conducting protrusion 109 increases the contact area between the outer shell 106 and the inner plate 107, thereby improving heat transfer efficiency. The purpose of the inner plate 107 is to form a sealed structure and prevent contamination of the outer shell 106. Furthermore, a release agent is applied to the inner plate 107 to facilitate demolding. The inner plate 107 can be cleaned separately after demolding, while the outer shell 106 does not require cleaning. Therefore, a large number of inner plates 107 can be used, and the outer shell 106 can be reused multiple times, each time connected to a new inner plate 107.

[0028] Furthermore, the portion of the heat-conducting pipe 104 within the cavity has a curved, serpentine structure, with several heat-conducting protrusions 109 located within the recessed portion of this serpentine structure. The recessed portion of the heat-conducting pipe 104 is the spacer between two adjacent pipe bodies.

[0029] Furthermore, the two ends of the template 1 are connected to two other adjacent templates 1 through a connecting mechanism; the connecting mechanism includes an L-shaped block 8, which fits at the included angle of the ends of two adjacent templates 1, and the two ends of the L-shaped block 8 are respectively threaded with screws 801, the two screws 801 are vertically arranged, and the two ends of the template 1 are respectively fixedly connected with fixing blocks 105, and the two screws 801 are respectively inserted into the corresponding fixing blocks 105, so that when the screws 801 are rotated, the template 1 is pushed to move.

[0030] Specifically, a total of four L-shaped blocks 8 and eight screws 801 are provided. The four L-shaped blocks 8 are located at the four ends of the template frame. The two screws 801 located on the L-shaped blocks 8 are parallel to the two adjacent templates 1. When the screws 801 on both sides of the template 1 are tightened, the template 1 can be pushed to move, making the fit between the slot 110 and the heat-conducting protrusion 109 tighter. The fixing block 105 is provided with blind holes for the screws 801 to be inserted to achieve a restraining effect.

[0031] like Figure 1 , Figure 2 A bridge construction and maintenance system for high-altitude cold regions, wherein the hot water circulation component includes a drain pipe 101, an inlet pipe 102 and a heating water tank 3, and heat conduction pipes 104 located at both ends are connected to the drain pipe 101 and the inlet pipe 102 respectively. Pump bodies are respectively installed on the inlet pipe 102 and the heating water tank 3. Circulating water and heating devices are installed inside the heating water tank 3.

[0032] Specifically, both the pump body and the heating device are existing technologies, with the heating device preferably being an electric heating tube. The curing system of this invention employs heating of the formwork 1, preheating it for a period before demolding to further improve the safety and quality of bridge construction.

[0033] Furthermore, multiple template frames are provided, arranged in a rectangular array. Heat-conducting pipes 104 within the templates 1 on each of the multiple template frames are connected in series, with both ends of the series-connected heat-conducting pipes 104 connected to a drain pipe 101 and a water inlet pipe 102. Specifically, adjacent template frames can be connected in series via an intermediate pipe 103. The templates 1 on the multiple template frames are connected end-to-end, allowing circulating water to flow into each template 1.

[0034] Furthermore, an automatic spraying assembly is provided above the multiple template frames for spraying and curing the concrete 7.

[0035] Furthermore, multiple template frames are arranged on the support platform 2, and an annular water tank 201 is provided on the support platform 2. The multiple template frames are located inside the annular water tank 201. The annular water tank 201 is connected to the sedimentation tank 4 through a return water pipe 401, and a pump body is provided on the return water pipe 401. The purpose of the annular water tank 201 is to collect the spray water, which returns to the sedimentation tank 4 through the return water pipe 401, settles at the bottom of the sedimentation tank 4, and makes the upper part of the sedimentation tank 4 clear liquid. A drain pipe is provided at the bottom of the sedimentation tank 4 to discharge sewage.

[0036] Furthermore, the sedimentation tank 4 is connected to the heating water tank 3 via a connecting pipe 402, and a pump body is installed on the connecting pipe 402. The clear liquid in the upper part of the sedimentation tank 4 returns to the heating water tank 3 through the connecting pipe 402 to replenish the circulating water in the heating water tank 3, thereby achieving the purpose of saving water resources. A water level sensor can be installed in the heating water tank 3. When the water level reaches a high level, the sedimentation tank 4 will not replenish water into the heating water tank 3; replenishment will only occur when the water level is low.

[0037] Furthermore, a windbreak 5 is provided on the support platform 2, and multiple template frames are located inside the windbreak 5; the automatic sprinkler assembly includes a sprinkler pipe 302, which is fixed to the top of the windbreak 5, and multiple sprinkler heads 303 are provided on the sprinkler pipe 302. The sprinkler pipe 302 is connected to the heating water tank 3 through an output pipe 301.

[0038] Specifically, a windproof cover 6 can be installed on the windproof canopy 5 to create a warm indoor environment inside the windproof canopy 5. This is beneficial for the curing of the concrete 7. During construction, after the concrete 7 has set, the formwork 1 is removed, and spray curing can begin. During spray curing, the heating water tank 3 continuously heats the water, and hot water is evenly sprayed onto the concrete 7 through the spray nozzles 303, thereby achieving the purpose of curing.

[0039] In addition, an environmental monitoring sensor is installed inside the windbreak 5 to detect the temperature and humidity inside the windbreak 5, and to control the temperature of the circulating water in the heating water tank 3 based on the temperature and humidity, and to keep the temperature of the template 1 within a suitable range.

[0040] It should be noted that when the temperature is below 3°C, the circulating water is at risk of freezing. In this case, other curing methods should be used, such as covering the concrete with insulation cloth, instead of using automatic sprinklers.

[0041] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, alterations, substitutions, or variations made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A thermal insulation formwork for bridge construction in high-altitude, cold regions, characterized in that: The template (1) is filled with thermally conductive filler (108), which covers the heat-conducting pipe (104). The heat-conducting pipe (104) is located inside the template (1) and extends out of the template (1) at both ends. Four templates (1) together form a square template frame. The heat conduction pipes (104) on the four templates (1) are connected end to end through the middle pipe (103). The heat conduction pipes (104) at both ends are connected to the hot water circulation component so as to form heated circulating water in the heat conduction pipes (104) on the four templates (1). The template (1) includes an outer shell (106) and an inner plate (107). A cavity is provided inside the outer shell (106). The heat-conducting pipe (104) and the heat-conducting filler (108) are both provided inside the cavity. The inner plates (107) on the four templates (1) are detachably connected. The outer side of the inner plate (107) is fixedly connected with several heat-conducting protrusions (109), and the inner side of the outer shell (106) is provided with slots (110) that are adapted to the several heat-conducting protrusions (109). The several heat-conducting protrusions (109) are inserted into the slots (110) one by one. The two ends of the template (1) are connected to two other adjacent templates (1) through a connecting mechanism; The connecting mechanism includes an L-shaped block (8), which fits at the included angle of the ends of two adjacent templates (1). The two ends of the L-shaped block (8) are respectively threaded with screws (801). The two screws (801) are vertically arranged. The two ends of the template (1) are respectively fixedly connected with fixing blocks (105). The two screws (801) are respectively inserted into the corresponding fixing blocks (105), so that when the screws (801) are rotated, the template (1) is pushed to move. The portion of the heat-conducting tube (104) inside the cavity has a curved serpentine tube structure, and several heat-conducting protrusions (109) are located in the recessed portion of its serpentine tube structure.

2. A bridge construction and maintenance system for high-altitude cold regions, applied to the thermal insulation formwork described in claim 1, characterized in that: The hot water circulation assembly includes a drain pipe (101), an inlet pipe (102), and a heating water tank (3). Heat-conducting pipes (104) at both ends are connected to the drain pipe (101) and the inlet pipe (102), respectively. Pump bodies are installed on the inlet pipe (102) and the heating water tank (3). Circulating water and heating devices are installed inside the heating water tank (3).

3. The bridge construction and maintenance system for high-altitude cold regions according to claim 2, characterized in that: The template frame is provided in multiple ways, and the multiple template frames are distributed in a rectangular array. The heat conduction pipes (104) in the template (1) of the multiple template frames are connected in series, and the two ends of the series heat conduction pipes (104) are connected to the drain pipe (101) and the water inlet pipe (102).

4. The bridge construction and maintenance system for high-altitude cold regions according to claim 2, characterized in that: An automatic spraying assembly is installed above multiple template frames for spraying and curing concrete (7).

5. A bridge construction and maintenance system for high-altitude cold regions according to claim 4, characterized in that: Multiple template frames are arranged on a support platform (2), and an annular water trough (201) is provided on the support platform (2). The multiple template frames are located inside the annular water trough (201). The annular water tank (201) is connected to the sedimentation tank (4) through the return water pipe (401), and a pump body is installed on the return water pipe (401).

6. The bridge construction and maintenance system for high-altitude cold regions according to claim 5, characterized in that: The sedimentation tank (4) is connected to the heating water tank (3) through a connecting pipe (402), and a pump body is provided on the connecting pipe (402).

7. A bridge construction and maintenance system for high-altitude cold regions according to claim 6, characterized in that: A windbreak canopy (5) is provided on the support platform (2), and multiple template frames are located inside the windbreak canopy (5); The automatic sprinkler assembly includes a sprinkler pipe (302), which is fixed to the top of the windbreak (5). The sprinkler pipe (302) is provided with multiple sprinkler heads (303), and the sprinkler pipe (302) is connected to the heating water tank (3) through an output pipe (301).

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