Steel structure intelligent temperature control device and construction method thereof

Abstract

The application discloses a kind of steel structure intelligent temperature control device and its construction method, comprising: multiple monitoring structures, install in steel structure to be used to gather the real-time temperature value of the steel structure;For the outer part of the component of the steel structure Multiple heating structures, including heat insulation layer, the heat insulation layer has an inner side and an outer side, the inner side of the heat insulation layer is laid with heating cable, the inner side of the heat insulation layer is attached with protective layer, and the protective layer is covered on the heating cable;Controller is connected to the monitoring structure and the heating structure.The application solves the problem that steel structure closure is not suitable for construction in winter in northern region.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to an intelligent temperature control device for steel structures and its construction method. Background Technology

[0002] Steel structures are a common structural form in building engineering, widely used in large, column-free spaces such as conference and exhibition centers, stadiums, airport terminals, and hangars. Due to the high coefficient of linear expansion of steel, it is highly sensitive to temperature. In regions with significant temperature variations, temperature is a key factor determining the overall deformation and component cross-sectional size of steel structures. To prevent excessive deformation and additional stress from temperature-induced structural stresses that could endanger structural safety and usability, structural designers, based on long-term average temperatures and other climatic conditions at the building's location, calculate specific requirements for the closure temperature of long steel structures. Considering overall economy and safety, the closure temperature of steel structures is typically within a certain range based on the annual average temperature of the building's location. However, in northern my country, large temperature differences and long, harsh winters are common, limiting the effective closure time for steel structures. This is especially true for steel structures not completed before winter, requiring work to be halted for nearly six months until the ambient temperature meets the closure requirements before closure and subsequent unloading can proceed. This significantly impacts the project schedule, increases costs, and poses significant safety hazards. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a smart temperature control device for steel structures and its construction method are provided to solve the problem that steel structure closure is not suitable for construction in northern regions during winter.

[0004] To achieve the above objectives, a steel structure intelligent temperature control device is provided, comprising:

[0005] Multiple monitoring structures are installed on the steel structure to collect the real-time temperature value of the steel structure.

[0006] Multiple heating structures for covering the exterior of the steel structure components include a heat insulation layer having an inner side and an outer side, a heating cable laid on the inner side of the heat insulation layer, and a protective layer attached to the inner side of the heat insulation layer, the protective layer covering the heating cable.

[0007] A controller is connected to the monitoring structure and the heating structure.

[0008] Furthermore, the monitoring structure includes:

[0009] A magnetic arch frame is magnetically attached to the steel structure, and grooves are provided on opposite sides at both ends of the magnetic arch frame;

[0010] A sliding rod, the two ends of which are respectively slidably disposed in the two sliding grooves of the magnetic arch frame;

[0011] A temperature sensing element is installed on the side of the slide rod facing away from the top of the magnetic arch, and the temperature sensing element is connected to the controller;

[0012] An elastic element is connected between the arch and the side of the slide bar facing the arch to allow the temperature sensor to fit against the steel structure.

[0013] Furthermore, the temperature sensing element is a temperature sensor.

[0014] Furthermore, the elastic element is a push spring.

[0015] Furthermore, the protective layer is a thermally conductive film layer.

[0016] This invention provides a construction method for an intelligent temperature control device for steel structures, comprising the following steps:

[0017] Based on the design closure temperature, several key load-bearing components of the steel structure were selected using structural design software.

[0018] A heating structure is wrapped around the outside of several key load-bearing components, and a monitoring structure is installed thereon.

[0019] Connect the controller to the heating structure and the monitoring structure;

[0020] The monitoring structure collects the real-time temperature of the key load-bearing components;

[0021] The controller acquires the real-time temperature and controls the heating structure to raise the temperature of the key stress-bearing component to the designed closure temperature.

[0022] Welding of the closure and reinforcement components is carried out on the steel structure.

[0023] Furthermore, the step of screening multiple key load-bearing components of the steel structure using structural design software includes:

[0024] Using the designed closure temperature as the initial temperature of the steel structure, the additional stress and deformation of the steel structure under the action of heating and cooling are calculated and analyzed by the structural design software, and the components with significant changes in additional stress and deformation under the action of temperature change are selected as the first key load-bearing components.

[0025] The design closure temperature is set as the initial temperature of the first key load-bearing component. The actual ambient temperature at the construction site during closure in a low-temperature environment is set as the initial temperature of the remaining components of the steel structure. The additional stress and deformation of the steel structure under the effects of heating and cooling are calculated and analyzed again. The component with significant changes in additional stress and deformation under temperature changes is selected as the second key load-bearing component. The first key load-bearing component and the second key load-bearing component selected through the two calculations and analyses are the key load-bearing components of the steel structure.

[0026] The beneficial effects of this invention are that the intelligent temperature control device for steel structures can set the closure period in winter during the construction of steel structures. Even when the average ambient temperature is much lower than the design-given closure temperature, the closure construction can be carried out after heating and insulating the key load-bearing components of the structure using the method of this invention. This ensures structural safety while effectively shortening the construction cycle and creating good economic benefits. Attached Figure Description

[0027] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 This is a structural schematic diagram of the intelligent temperature control device for steel structures according to an embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the monitoring structure according to an embodiment of the present invention.

[0030] Figure 3 This is a three-dimensional structural diagram of the monitoring structure according to an embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the heating structure according to an embodiment of the present invention.

[0032] Figure 5 This is a cross-sectional view of the heating structure according to an embodiment of the present invention.

[0033] Figure 6 This is a schematic diagram illustrating the usage status of the intelligent temperature control device for steel structures according to an embodiment of the present invention. Detailed Implementation

[0034] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] Reference Figures 1 to 6 As shown, the present invention provides an intelligent temperature control device for steel structures, comprising: multiple monitoring structures 1, multiple heating structures 2, and a controller 3.

[0037] The number of monitoring structures is matched with the number of heating structures. Specifically, one monitoring structure and one heating structure are configured for each component of the steel structure. The monitoring structure 1 is installed on the steel structure 4 to collect the real-time temperature value of the steel structure 4.

[0038] The heating structure is used to heat the components of the steel structure. Heating structure 2 is used to cover the exterior of the components of steel structure 4.

[0039] For details, please refer to Figure 4 and Figure 5 The heating structure includes a heat insulation layer 21, a heating cable 22, and a protective layer 23. The heat insulation layer 21 has an inner side and an outer side. The heating cable 22 is laid on the inner side of the heat insulation layer 21. The protective layer 23 is attached to the inner side of the heat insulation layer 21. The protective layer 23 covers the heating cable 22.

[0040] In a preferred embodiment, the protective layer 23 is a thermally conductive film layer. The insulation layer is a flexible felt-like insulation material.

[0041] The controller 3 is connected to the monitoring structure 1 and the heating structure 2.

[0042] As a preferred implementation method, see [reference]. Figure 2 and Figure 3 As shown, the monitoring structure 1 includes: a magnetic arch frame 11, a sliding rod 12, a temperature sensing element 13, and an elastic element 14.

[0043] The magnetic arch frame 11 is magnetically attached to the steel structure 4. The magnetic arch frame 11 is U-shaped or horseshoe-shaped. Magnets are installed on the end faces of both ends of the magnetic arch frame 11. Sliding grooves 10 are formed on the opposite sides of both ends of the magnetic arch frame 11.

[0044] The two ends of the slide rod 12 are respectively slidably placed in the two slide grooves of the magnetic arch frame 11.

[0045] Temperature sensing element 13 is installed on the side of slide rod 12 facing away from the top of the magnetic arch frame 11. Temperature sensing element 13 is connected to controller 3.

[0046] The elastic element 14 is connected between the arch and the side of the slide bar 12 facing the arch so that the temperature sensor is attached to the steel structure 4.

[0047] In a preferred embodiment, the temperature sensing element 13 is a temperature sensor.

[0048] In this embodiment, the elastic element 14 is a push spring. The elastic element is used to tightly attach the temperature sensing element to the surface of the steel structure component.

[0049] This invention provides a construction method for an intelligent temperature control device for steel structures, comprising the following steps:

[0050] S1. Based on the design closure temperature, several key load-bearing components of steel structure 4 were selected using structural design software.

[0051] In some embodiments, the steel structure is a space truss structure. When the number of components in the steel structure is large, the steps for selecting multiple key load-bearing components of steel structure 4 using structural design software include:

[0052] A. Using the design closure temperature as the initial temperature of steel structure 4, the additional stress and deformation of steel structure 4 under the action of heating and cooling are calculated and analyzed by structural design software. The component with significant changes in additional stress and deformation under temperature change is selected as the first key load-bearing component.

[0053] B. The design closure temperature is set as the initial temperature of the first critical load-bearing component. The actual ambient temperature at the construction site during closure in a low-temperature environment is set as the initial temperature of the remaining components of steel structure 4. The additional stress and deformation of steel structure 4 under the effects of heating and cooling are calculated and analyzed again. The component with significant changes in additional stress and deformation under temperature change is selected as the second critical load-bearing component. The first and second critical load-bearing components selected through the two calculations and analyses are the critical load-bearing components of steel structure 4.

[0054] Screening method for key load-bearing components:

[0055] 1) Using the closure temperature required by the design as the initial temperature of the component, the additional stress and deformation of the structure under the action of temperature rise and temperature drop are calculated and analyzed by the structural design software, and the component with significant changes in additional stress and deformation under the action of temperature is selected as the first key load-bearing component.

[0056] 2) Set the closure temperature required by the design as the initial temperature of the selected first key load-bearing component, and set the actual ambient temperature at the construction site during closure in a low-temperature environment as the initial temperature of the remaining components. Calculate and analyze the additional stress and deformation of the structure under the action of temperature rise and temperature drop again, and select the component with significant changes in additional stress and deformation under the action of temperature as the second key load-bearing component.

[0057] 3) The first and second key components selected through two calculations and analyses are the key load-bearing components of this structure.

[0058] For structures with a small number of components, all components are critical load-bearing components.

[0059] S2, an external heating structure 2 is installed on the exterior of several key load-bearing components, and a monitoring structure 1 is installed thereon.

[0060] In this embodiment, the insulation layer 21 of the heating structure covers the critical load-bearing component. The heating cable is installed inside the insulation layer. The heating cable is attached to the critical load-bearing component. A pipe clamp is installed on the outside of the insulation layer.

[0061] S3. Connect the controller 3 to the heating structure 2 and the monitoring structure 1.

[0062] The monitoring and heating structures are wrapped around the selected key load-bearing components and the outer surfaces of all nodes to ensure that the flexible heating structure is in close contact with the steel components of the steel structure. The wires connecting the various components and their connection lines to the controller are limited through the wire holes.

[0063] First, test whether the wires between the monitoring structures and heating structures and their connection to the controller are connected, and replace any non-energized or damaged parts and wires; then, debug the heating, temperature measurement, and intelligent temperature control functions of the intelligent heating and temperature monitoring and control device to ensure that all functions of the device are operating normally.

[0064] S4. Monitor the real-time temperature of key load-bearing components in structure 1.

[0065] S5 and controller 3 acquire real-time temperature and control heating structure 2 to raise the temperature of key load-bearing components to the designed closure temperature.

[0066] The overall temperature rise test of the intelligent temperature control device for steel structures of this invention is as follows: In the controller, a temperature rise of 3℃ (which can be 1℃ to 3℃) is input, and the control program is started. The monitoring structure tracks real-time temperature monitoring data. The controller is used to observe whether there are significant differences in the heating rates of different components, and whether the overall temperature remains stable after reaching the target temperature. Adjustments are made to the heating structures in areas with significantly abnormal heating rates. After repeated observations show that the differences in heating rates are not significant and the overall temperature rise is stable, the test is completed.

[0067] When the desired temperature of the steel structure components is input into the controller of the intelligent temperature control device for steel structures of the present invention, the controller starts the control program and enters the automatic heating and temperature control state.

[0068] S6. Weld the closure reinforcement components for steel structure 4.

[0069] Protective devices such as fire-receiving hoppers are installed around the closure and repair components to prevent welding slag from splashing and falling, which could damage the heating and temperature measuring components and connecting wires during the welding process.

[0070] According to the closure sequence, the supplementary rods of the closure parts are welded in sequence according to the corresponding welding process requirements until all components are welded together.

[0071] S7. Inspection and repair of closure weld seams.

[0072] According to the relevant requirements for welds, the welds at the closure section are subjected to flaw detection. Any welds that do not meet the relevant requirements are repaired in a timely manner and then re-inspected until the quality of all closure repair welds meets the relevant requirements.

[0073] S8. (Unloading and Cooling) Remove the covering heating and temperature measuring components, and the closure is complete.

[0074] Stop heating and allow the structure to cool naturally. Then, remove the heating and monitoring structures covering the outer surface of the structural components, allowing the structure to be fully exposed to the natural environment and restoring its stress state under natural low-temperature conditions. The structural closure is then complete.

[0075] To address the problem of steel structures failing to achieve the designed closure temperature requirements in low-temperature environments, leading to construction delays, increased costs, and safety hazards, this invention provides an intelligent temperature control device for steel structures. This device comprises a heating structure, a temperature monitoring structure, and a controller. By distributing and covering the outer surface of key load-bearing components of the steel structure with flexible heating structures, the steel components are heated to a higher temperature. The temperature monitoring structure enables real-time monitoring of the steel structure's temperature, and the controller provides stable temperature control. This ensures that the steel structure's temperature reaches and stabilizes within the designed effective operating temperature range for closure, unloading, and other tasks even in low-temperature environments, enabling normal construction of steel structures under low-temperature conditions.

[0076] The heating structure consists of block and strip flexible components with a flexible felt-like heat insulation material as the surface layer and heating cables evenly distributed on the inner side. Each block (strip) of the heating structure has a terminal on the outer side for wire connection.

[0077] The temperature monitoring structure consists of a temperature sensing element embedded in a horseshoe magnet, which can be adsorbed onto the surface of a steel component. The temperature sensing element is equipped with a wiring terminal, which can be connected to the controller to transmit temperature monitoring data in real time. The temperature sensing element is pressed tightly inside the horseshoe magnet by a push spring to ensure that the temperature sensing element can make close contact with the steel component after being adsorbed onto the surface of the steel component.

[0078] The controller consists of a back-end computer control terminal and a current controller, equipped with an intelligent control platform. After the desired control temperature is input into the intelligent control platform, the current controller can be controlled to supply power to the heating structure for heating. At the same time, the temperature monitoring structure monitors the heating status of the steel components in real time. Once the desired temperature is reached, the power supply current is automatically controlled to stabilize the temperature and keep it constant.

[0079] The intelligent temperature control device for steel structures of the present invention allows the closure period to be set in winter during the construction of steel structures. Even when the average ambient temperature is much lower than the design-given closure temperature, the closure construction can be carried out after heating and insulating the key load-bearing components of the structure using the method of the present invention. This ensures structural safety while effectively shortening the construction cycle and creating good economic benefits.

[0080] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A steel structure intelligent temperature control device, characterized in that, include: Multiple monitoring structures are installed on the steel structure to collect the real-time temperature value of the steel structure. Multiple heating structures for covering the exterior of the steel structure components include a heat insulation layer having an inner side and an outer side, a heating cable laid on the inner side of the heat insulation layer, and a protective layer attached to the inner side of the heat insulation layer, the protective layer covering the heating cable. The controller is connected to the monitoring structure and the heating structure; The monitoring structure includes: a magnetic arch frame magnetically adsorbed onto the steel structure, with grooves formed on opposite sides at both ends of the magnetic arch frame; a sliding rod, with both ends of the sliding rod sliding in the two grooves of the magnetic arch frame; a temperature sensing element installed on the side of the sliding rod facing away from the arch top of the magnetic arch frame, the temperature sensing element being connected to the controller; and an elastic element connected between the arch top and the side of the sliding rod facing the arch top to allow the temperature sensing element to fit against the steel structure.

2. The intelligent temperature control device for steel structures according to claim 1, characterized in that, The temperature sensing element is a temperature sensor.

3. The intelligent temperature control device for steel structures according to claim 1, characterized in that, The elastic element is a push spring.

4. The intelligent temperature control device for steel structures according to claim 1, characterized in that, The protective layer is a thermally conductive film layer.

5. A construction method for a steel structure intelligent temperature control device as described in any one of claims 1 to 4, characterized in that, Includes the following steps: Based on the design closure temperature, several key load-bearing components of the steel structure were selected using structural design software. A heating structure is wrapped around the outside of several key load-bearing components, and a monitoring structure is installed thereon. Connect the controller to the heating structure and the monitoring structure; The monitoring structure collects the real-time temperature of the key load-bearing components; The controller acquires the real-time temperature and controls the heating structure to raise the temperature of the key stress-bearing component to the designed closure temperature. Welding of the closure and reinforcement components is carried out on the steel structure.

6. The construction method according to claim 5, characterized in that, The steps of screening multiple key load-bearing components of the steel structure using structural design software include: Using the designed closure temperature as the initial temperature of the steel structure, the additional stress and deformation of the steel structure under the action of heating and cooling are calculated and analyzed by the structural design software, and the components with significant changes in additional stress and deformation under the action of temperature change are selected as the first key load-bearing components. The design closure temperature is set as the initial temperature of the first key load-bearing component. The actual ambient temperature at the construction site during closure in a low-temperature environment is set as the initial temperature of the remaining components of the steel structure. The additional stress and deformation of the steel structure under the effects of heating and cooling are calculated and analyzed again. The component with significant changes in additional stress and deformation under temperature changes is selected as the second key load-bearing component. The first key load-bearing component and the second key load-bearing component selected through the two calculations and analyses are the key load-bearing components of the steel structure.

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