A method for constructing farmhouses based on combined prefabricated wall panels

Abstract

The present invention relates to the technical field of farmhouse construction, and more particularly to a farmhouse construction method based on modular prefabricated wall panels, comprising: pre-embedding bolts in the foundation concrete of the assembly site according to a farmhouse prediction model, sequentially installing steel columns, steel beams, and floor support steel to form a steel structure frame; performing pre-splicing; determining a wallboard edge wear model and adjusting the splicing hot air temperature; determining a wallboard structural stability treatment method based on a stress distribution diagram, including adjusting the misalignment angle of the wallboard edge serrations during splicing, or determining the splicing gap width of rock wool within the wallboard according to a maximum heat transfer coefficient; splicing the steel structure frame and the wallboard structure according to the splicing hot air temperature and the wallboard structural stability treatment method to form an external maintenance structure for the farmhouse; and installing an internal structure on the external maintenance structure to form a modular farmhouse. The present invention improves the structural stability and thermal insulation performance of the farmhouse.

Description

Technical Field

[0001] The present invention relates to the technical field of farmhouse construction, and in particular to a farmhouse construction method based on combined prefabricated wall panels. Background Art

[0002] In the existing technology, the structural system of prefabricated farmhouses mainly includes steps such as foundation treatment, wall panel construction, connection and fixation, and subsequent water and electricity laying. Traditional construction methods mostly use on-site wet operations, which have problems such as long construction period, large labor demand, and serious environmental pollution. Prefabricated farmhouses use prefabricated wall panels to achieve rapid construction and fixation of walls, greatly shortening the construction period. During the wall panel construction process of existing prefabricated farmhouses, there are often problems such as low wall panel installation accuracy and difficulty in ensuring thermal insulation effect, resulting in insufficient overall stability of the wall.

[0003] Chinese Patent Publication No.: CN117266567A discloses a method for constructing a prefabricated concrete frame structure farmhouse, comprising the following steps: S1: installing prefabricated reinforced concrete beams on the house foundation slab, and reserving columnar frame steel bars at the connection points of every two sections of prefabricated reinforced concrete beams, thereby installing blocks, clamping the prefabricated reinforced concrete beams with the notches below the blocks, and clamping the reserved columnar frame steel bars with the notches on the left and right sides of the blocks; S2: pouring the reserved columnar frame steel bars in the notches of the blocks on site to form cast-in-place concrete columns; S3: Install precast reinforced concrete beams in the notches above the blocks, then install blocks above the precast reinforced concrete beams, and install them in sequence upwards. Install steel mesh in the notches on the side of the blocks at the door and window openings, and then apply a layer of sand and ash. S4: Follow the above method to construct to the house elevation, and tie the ring beam reinforcement in the notch above the topmost block. S5: Finally, install the concrete composite floor slab or the formwork-free steel truss slab, tie the top plate reinforcement and the ring beam reinforcement, and extend the reserved columnar frame reinforcement upwards into the top plate reinforcement and the ring beam reinforcement, and cast the top plate and ring beam concrete on site as a whole. It can be seen from this that the method for constructing prefabricated concrete lattice structure farmhouses has problems such as the rigid installation of the steel structure frame and the wall panels causing deformation due to local stress concentration, resulting in accumulated errors and increased wear, and the edge wear at the wall panel joints due to friction or installation impact, which leads to reduced thermal insulation performance. Summary of the Invention

[0004] To this end, the present invention provides a method for constructing farmhouses based on combined prefabricated wall panels, which is used to overcome the problems in the prior art of rigid installation of steel structure frames and wall panels causing deformation due to local stress concentration, resulting in accumulated errors and thus increased wear, and edge wear at the wall panel joints due to friction or installation impact, thereby reducing thermal insulation performance.

[0005] To achieve the above-mentioned object, the present invention provides a method for constructing a farmhouse based on modular prefabricated wall panels, comprising:

[0006] According to the farmhouse prediction model, bolts are embedded in the foundation concrete at the assembly site, and steel columns, steel beams and floor support steel are installed in sequence to form a steel structure frame;

[0007] respectively obtaining a stress distribution diagram of the steel structure frame and a maximum heat transfer coefficient of the steel column;

[0008] Pre-joining the pre-joined wall panels and the steel structure frame, and detecting the shape deviation between the pre-joined wall panels and the simulated wall panels in the farmhouse prediction model, the impact load borne by the pre-joined wall panels, and the temperature change at the joint between the pre-joined wall panels and the steel structure frame within a certain number of unit joint times;

[0009] constructing a wall panel edge wear model according to the morphological deviation, the impact load, and the temperature variation, and adjusting the splicing hot air temperature according to the wall panel edge wear model;

[0010] Determining a treatment method for wall panel structural stability based on the stress distribution diagram, including adjusting the misalignment angle of serrations on the edges of the wall panels when the wall panels are spliced, or determining a splicing gap width between rock wool within the wall panels in the farmhouse prediction model based on the maximum heat transfer coefficient;

[0011] Splicing the steel structure frame and the wall panel structure according to the splicing hot air temperature and the wall panel structure stability treatment method to form an external maintenance structure of the farmhouse;

[0012] An interior structure is installed on the exterior maintenance structure of the farmhouse to form a combined farmhouse.

[0013] Furthermore, a wall panel edge wear model is constructed according to the morphological deviation, the impact load, and the temperature change, including:

[0014] Obtaining measured three-dimensional data of several sampling positions at the connection between the pre-joined wall panels and the steel structure frame;

[0015] Comparing the measured three-dimensional data with the theoretical three-dimensional data of the corresponding position of the simulated wall panel in the farmhouse prediction model to output the morphological deviation amount;

[0016] The wall panel edge wear model is constructed based on the morphological deviation, the impact load, and the temperature change.

[0017] Furthermore, adjusting the splicing hot air temperature according to the wallboard edge wear model includes:

[0018] Obtaining the wear depth of the pre-joined wall panels under the current working condition in the wall panel edge wear model;

[0019] calculating a wallboard wear rate according to the wear depth;

[0020] If the wall panel wear rate is greater than or equal to the preset wear rate, the splicing hot air temperature is increased.

[0021] Furthermore, the wall panel wear rate is a ratio of a difference between an actual height of the pre-spliced ​​wall panel before splicing and the wear depth to the actual height.

[0022] Furthermore, the misalignment angle of the serrations on the edge of the wall panels when the wall panels are spliced ​​is adjusted, including:

[0023] Comparing the stress in the stress distribution diagram with a preset first stress and a preset second stress respectively;

[0024] If the stress is greater than or equal to the preset second stress, the area is divided into a load-bearing area, and the staggered angle of the serrations on the edge of the wall panels in the load-bearing area is increased when the wall panels are spliced;

[0025] If the stress is greater than or equal to the preset first stress and less than the preset second stress, the area is divided into a transition area, and the maximum heat transfer coefficient of the steel column corresponding to the transition area is obtained;

[0026] If the stress is less than the preset first stress, it is divided into a buffer area;

[0027] Wherein, the preset first stress is smaller than the preset second stress.

[0028] Furthermore, the misalignment angle is the angle formed by the center line of the tooth peaks of the serrations on the edge of the wall panel and the center line of the tooth peaks of the serrations on the edge of another wall panel to which it is spliced.

[0029] Furthermore, determining the width of the joint gap between the rock wool in the wall panels in the farmhouse prediction model according to the maximum heat transfer coefficient includes:

[0030] Comparing the maximum heat transfer coefficient of the steel column corresponding to the transition area with a preset maximum heat transfer coefficient;

[0031] If the maximum heat transfer coefficient is greater than or equal to the preset maximum heat transfer coefficient, the width of the splicing gap between the rock wool in the wall panel is increased.

[0032] Furthermore, the splicing gap width is positively correlated with the maximum heat transfer coefficient.

[0033] Furthermore, the impact load is the maximum stress to which the pre-spliced ​​wall panels are subjected within a unit splicing time.

[0034] Furthermore, the temperature change is the difference between the temperature at the splicing point at the end of the unit splicing time and the temperature at the splicing point at the start of the unit splicing time.

[0035] Compared with the prior art, the beneficial effect of the present invention lies in that, according to the method of the present invention, based on the farmhouse prediction model and the pre-splicing of the steel structure, the rigid structure splicing in the pre-splicing process causes morphological deviation, impact load at the splicing point, and splicing friction causes an increase in temperature change, thereby causing local stress concentration and deformation, leading to error accumulation and increased wear. By determining the wall panel edge wear model and outputting the splicing tightening torque compensation value, the chain diffusion of assembly errors is reduced; since the steel structure is easily affected by environmental factors such as temperature, humidity changes and wind force during the assembly process, the size and shape of the steel structure frame undergo slight changes, which in turn affects the installation accuracy of the wall panels. By determining the wall panel structure stability processing method, the local overload risk after the farmhouse splicing is reduced, thereby improving the construction quality and construction efficiency of the farmhouse. By adjusting the rock wool splicing gap width according to the maximum heat transfer coefficient, the increase in heat transfer performance due to uneven stress is reduced, and the accuracy and stability of the wall panel installation are further improved.

[0036] Furthermore, the method of the present invention determines the edge wear model of the wall panel, and the morphological deviation between the actual splicing and the predicted model occurs due to manufacturing errors, installation errors, or material deformation caused by the environment and transportation. The impact load increases due to local wear, deformation, and large fastening force on the edge of the wall panel when the wall panel is spliced ​​with the steel structure frame. The temperature changes caused by the environment of the farmhouse assembly site or the assembly friction increase the thermal expansion and contraction of the material, thereby reducing the fitting accuracy between the wall panel and the steel structure frame. By predicting the wear of the wall panel edge, increasing the splicing hot air temperature, and using the material expansion to fill the wear gap, and when it naturally shrinks after cooling, the contact pressure is maintained by the bolt pre-tightening force to compensate for the wear gap, thereby improving the fitting accuracy and stability between the wall panel and the steel structure frame.

[0037] Furthermore, the method of the present invention adjusts the misalignment angle of the saw teeth at the edge of the wall panels when the wall panels are spliced. Due to the changes in geometric shapes or sizes such as holes, notches, concave corners, and cross-sectional mutations in the steel structure components, the main stress line will bend when bypassing these defects, thereby generating a stress peak along the direction of force at the edge of the defect. High stress areas are prone to structural failure due to stress concentration, such as deformation of steel beams and cracking of wall panels. By increasing the misalignment angle of the saw teeth in the load-bearing area and dispersing the stress by changing the angle of the meshing line, the risk of local overload is reduced, thereby increasing the structural stability of the farmhouse.

[0038] Furthermore, the method of the present invention determines the width of the splicing gaps between the rock wool in the wall panels in the farmhouse prediction model. The stress of the steel columns in the transition area is uneven, and there are many gaps, holes or loose connection nodes, which increases the heat transfer in the area, and then causes heat to be transferred to the inside of the wall through the steel columns, forming a thermal bridge effect, and reducing the overall thermal insulation performance. By increasing the width of the splicing gaps to form a local enclosed air cavity, the low thermal conductivity of air is used to reduce heat transfer, effectively alleviate the thermal bridge effect, and improve the thermal insulation performance of the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the overall structure of a combined farmhouse in a method for constructing a farmhouse based on combined prefabricated wall panels according to an embodiment of the present invention;

[0040] Figure 2 This is an overall flow chart of a method for constructing a farmhouse based on modular prefabricated wall panels according to an embodiment of the present invention;

[0041] Figure 3 This is a flow chart of adjusting the misalignment angle of the serrations on the edges of wall panels when splicing them, in a method for constructing a farmhouse based on modular prefabricated wall panels according to an embodiment of the present invention;

[0042] Explanation of the accompanying numbers: 1-roof, 2-floor slab, 3-floor, 4-doors and windows, 5-photovoltaic panels, 6-wall panels. DETAILED DESCRIPTION

[0043] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0044] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0045] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0046] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0047] See also Figure 1 、 Figure 2 、 Figure 3 The figures are as follows, which respectively show the overall structural diagram of the combined farmhouse in the method for building a farmhouse based on combined prefabricated wall panels according to an embodiment of the present invention, the overall flow chart, and the flow chart for adjusting the misalignment angle of the serrations on the edges of the wall panels when splicing the wall panels. A method for building a farmhouse based on combined prefabricated wall panels according to an embodiment of the present invention comprises:

[0048] According to the farmhouse prediction model, bolts are embedded in the foundation concrete of the assembly site, and steel columns, steel beams and floor 2 support steel are installed in sequence to form a steel structure frame;

[0049] respectively obtaining a stress distribution diagram of the steel structure frame and a maximum heat transfer coefficient of the steel column;

[0050] Pre-joining the pre-joined wall panels and the steel structure frame, and detecting the shape deviation between the pre-joined wall panels and the simulated wall panels 6 in the farmhouse prediction model, the impact load borne by the pre-joined wall panels, and the temperature change at the joint between the pre-joined wall panels and the steel structure frame within a certain number of unit joint times;

[0051] constructing a wall panel 6 edge wear model according to the morphological deviation, the impact load, and the temperature variation, and adjusting the splicing hot air temperature according to the wall panel 6 edge wear model;

[0052] Determining a treatment method for wall panel structural stability based on the stress distribution diagram, including adjusting the misalignment angle of serrations on the edges of the wall panels when the wall panels are spliced, or determining a splicing gap width between rock wool within the wall panels in the farmhouse prediction model based on the maximum heat transfer coefficient;

[0053] Splicing the steel structure frame and the wall panel structure according to the splicing hot air temperature and the wall panel structure stability treatment method to form an external maintenance structure of the farmhouse;

[0054] An interior structure is installed on the exterior maintenance structure of the farmhouse to form a combined farmhouse.

[0055] Specifically, the joint surface of the wall panel 6 is processed into a serrated shape.

[0056] Specifically, the process of establishing the rural house prediction model is to construct a physical three-dimensional model based on the assembly drawings of the rural house, the soil bearing capacity of the assembly site, and the compressive strength of the rod structure frame, and use finite element analysis software such as ANSYS and ABAQUS to simulate the mechanical simulation of the assembly.

[0057] Specifically, the maximum heat transfer coefficient of the steel column was tested using a guarded hot plate apparatus.

[0058] Specifically, the process of obtaining the stress distribution map includes:

[0059] The strain data during the assembly process is recorded by fiber Bragg grating sensors and converted into stress values ​​using Hooke's law;

[0060] The magnitude and direction of the principal stress at each point are calculated using the three-dimensional strain rosette data.

[0061] Use BIM to create stress distribution diagrams.

[0062] In implementation, the method of the present invention is based on the farmhouse prediction model and the pre-splicing of the steel structure. Since the rigid structure splicing in the pre-splicing process causes morphological deviation, impact load at the splicing point, and splicing friction causes increased temperature change, which leads to local stress concentration and deformation, resulting in error accumulation and increased wear. By determining the wall panel edge wear model and outputting the splicing tightening torque compensation value, the chain diffusion of assembly errors is reduced. Since the steel structure is easily affected by environmental factors such as temperature, humidity changes and wind force during the assembly process, the size and shape of the steel structure frame undergo slight changes, which in turn affects the installation accuracy of the wall panels. By determining the wall panel structure stability processing method, the local overload risk after the farmhouse is spliced ​​is reduced, thereby improving the construction quality and construction efficiency of the farmhouse. By adjusting the rock wool splicing gap width according to the maximum heat transfer coefficient, the increase in heat transfer performance due to uneven stress is reduced, and the accuracy and stability of the wall panel installation are further improved.

[0063] Specifically, the edge wear model of the wall panel 6 is constructed according to the shape deviation, the impact load, and the temperature change, including:

[0064] Obtaining measured three-dimensional data of several sampling positions at the connection between the pre-joined wall panels and the steel structure frame;

[0065] Comparing the measured three-dimensional data with the theoretical three-dimensional data of the corresponding position of the simulated wall panel 6 in the farmhouse prediction model to output the morphological deviation;

[0066] The edge wear model of the wall panel 6 is constructed based on the morphological deviation, the impact load, and the temperature change.

[0067] Specifically, the temperature change is detected by an infrared sensor.

[0068] Specifically, the process of comparing the measured three-dimensional data with the theoretical three-dimensional data of the farmhouse prediction model to output the morphological deviation includes:

[0069] Align the measured 3D data with the theoretical CAD model of the farmhouse prediction model, and calculate the normal offset and tangential offset of each sampling point;

[0070] Substitute the normal offset and the tangential offset into the Euclidean norm to calculate the morphological deviation.

[0071] Specifically, the measured three-dimensional data is detected by a laser scanner.

[0072] Specifically, under the conditions of an average annual rainfall of 1200 mm and a groundwater depth of 15 m, the unit splicing time is 1 min.

[0073] Specifically, the impact load is detected by fiber optic Bragg grating sensors installed on the pre-spliced ​​wall panels.

[0074] Specifically, the process of constructing the edge wear model of the wall panel 6 using the shape deviation, impact load, and temperature change includes:

[0075] Align the shape deviation, impact load and temperature change in time series;

[0076] A nonlinear function of morphological deviation, impact load, and temperature change is established. The impact load is constrained by the momentum conservation equation, and the temperature change is coupled with the thermal stress through the thermal expansion equation. The function is then learned based on the existing regression model.

[0077] The Archard wear formula is used as the basic model for iterative learning to output the wall panel 6 edge wear model.

[0078] Specifically, the impact load is the maximum stress on the pre-spliced ​​wallboard within a unit splicing time, and the temperature change is the difference between the temperature at the splicing point at the end of the unit splicing time and the temperature at the splicing point at the beginning of the unit splicing time.

[0079] Specifically, adjusting the splicing hot air temperature according to the edge wear model of the wall panel 6 includes:

[0080] Obtaining the wear depth of the pre-joined wall panels under the current working condition in the wall panel edge wear model;

[0081] calculating a wallboard wear rate according to the wear depth;

[0082] If the wall panel wear rate is greater than or equal to the preset wear rate, the splicing hot air temperature is increased.

[0083] Specifically, the splicing hot air temperature is adjusted by adjusting the heating temperature of the hot air gun.

[0084] Specifically, the wallboard wear rate is a ratio of a difference between an actual height of the pre-spliced ​​wallboard before splicing and the wear depth to the actual height.

[0085] Specifically, under the conditions that the length, width and height of the steel structure frame are 7m, 4m and 6m respectively, and the steel columns are 50X50mm square steel, the general value range of the preset wear rate is [0.2%, 0.9%], and the preferred embodiment of the preset wear amount is 0.4%.

[0086] Those skilled in the art will understand that the optional range of the preset wear rate and the preferred embodiment provided in this embodiment are the best values ​​selected under the conditions that the length, width and height of the steel structure frame are 7m, 4m and 6m respectively, and the steel columns are 50X50mm square steel for solving the technical problems solved by the technical solution of the present invention. In actual applications or experiments, those skilled in the art can adaptively adjust the preset wear rate according to the actual application environment and application scenarios.

[0087] In practice, if the difference between the wear of the wall panel 6 and the preset wear is within 0.1%, the splicing hot air temperature will increase to 1.1 times the original value. If the difference between the wear of the wall panel 6 and the preset wear exceeds 0.1%, the splicing hot air temperature will increase by 1°C for every 0.1% increase. For example, if the difference between the wear of the wall panel 6 and the preset wear is 0.3%, and the current splicing hot air temperature is 40°C, the splicing hot air temperature will increase to 40°C×1.1+1°C+1°C=46°C.

[0088] During implementation, the method of the present invention determines the edge wear model of the wall panel 6. Due to manufacturing errors, installation errors, or material deformation caused by the environment or transportation, morphological deviations occur between the actual splicing and the predicted model. When the wall panel 6 is spliced ​​with the steel structure frame, local wear, deformation, and large snap-fitting force are generated on the edge of the wall panel 6, which increases the impact load. Due to temperature changes caused by the environment of the farmhouse assembly site or assembly friction, the thermal expansion and contraction of the material increase, thereby reducing the fitting accuracy between the wall panel 6 and the steel structure frame. By predicting the wear condition of the edge of the wall panel 6 and increasing the splicing hot air temperature, the material expansion is used to fill the wear gap. When it naturally shrinks after cooling, the contact pressure is maintained by the bolt pre-tightening force to compensate for the wear gap, thereby improving the fitting accuracy and stability between the wall panel 6 and the steel structure frame.

[0089] Specifically, adjusting the misalignment angle of the serrations on the edges of the wall panels 6 when the wall panels 6 are spliced ​​includes:

[0090] Comparing the stress in the stress distribution diagram with a preset first stress and a preset second stress respectively;

[0091] If the stress is greater than or equal to the preset second stress, the area is divided into a load-bearing area, and the staggered angle of the serrations on the edge of the wall panels 6 is increased when the wall panels 6 in the load-bearing area are spliced;

[0092] If the stress is greater than or equal to the preset first stress and less than the preset second stress, the area is divided into a transition area, and the maximum heat transfer coefficient of the steel column corresponding to the transition area is obtained;

[0093] If the stress is less than the preset first stress, it is divided into a buffer area;

[0094] Wherein, the preset first stress is smaller than the preset second stress.

[0095] Specifically, the misalignment angle is the angle formed by the center line of the tooth peaks of the serrations on the edge of the wall panel 6 and the center line of the tooth peaks of the serrations on the edge of another wall panel 6 to which it is spliced.

[0096] Specifically, under the conditions that the length, width and height of the steel structure frame are 7m, 4m and 6m respectively, and the steel columns are 50X50mm square steel, the preset first stress is 30% of the yield strength of the steel column, and the preset second stress is 80% of the yield strength of the steel column.

[0097] Specifically, the maximum value of the misalignment angle adjustment cannot exceed 45°.

[0098] In implementation, the misalignment angle increases by 0.2° for every 1% increase in the yield strength of the steel column between the stress and the preset second stress. For example, if the difference between the stress and the preset second stress is 3% of the yield strength of the steel column and the current misalignment angle is 1°, the misalignment angle increases to 1°+0.2°×3=1.6°.

[0099] During implementation, the method of the present invention adjusts the misalignment angle of the serrations on the edge of the wall panel 6 when the wall panel 6 is spliced. Due to the presence of holes, notches, concave corners, sudden cross-sections and other geometrical shape or size changes in the steel structure components, the main stress line will bend when bypassing these defects, thereby generating a stress peak along the direction of force at the edge of the defect. High stress areas are prone to structural failure due to stress concentration, such as deformation of steel beams and cracking of wall panels 6. By increasing the misalignment angle of the serrations in the load-bearing area and dispersing the stress by changing the meshing line angle, the risk of local overload is reduced, thereby increasing the structural stability of the farmhouse.

[0100] Specifically, determining the width of the joint gap between the rock wool in the wall panels in the farmhouse prediction model according to the maximum heat transfer coefficient includes:

[0101] Comparing the maximum heat transfer coefficient of the steel column corresponding to the transition area with a preset maximum heat transfer coefficient;

[0102] If the maximum heat transfer coefficient is greater than or equal to the preset maximum heat transfer coefficient, the width of the splicing gap between the rock wool in the wall panel is increased.

[0103] Specifically, the width of the splicing gap is positively correlated with the maximum heat transfer coefficient.

[0104] Specifically, the width of the joint gap is the minimum distance between the rock wool in adjacent wall panels.

[0105] Specifically, under the conditions that the length, width and height of the steel structure frame are 7m, 4m and 6m respectively, and the steel columns are 50X50mm square steel, the general value range of the preset maximum heat transfer coefficient is [0.04W / (m·K), 0.05W / (m·K)], and the preferred embodiment of the preset maximum heat transfer coefficient is 0.046W / (m·K).

[0106] It can be understood by those skilled in the art that the optional range of the preset maximum heat transfer coefficient and the preferred embodiment provided in this embodiment are the values ​​selected under the conditions that the length, width and height of the steel structure frame are 7m, 4m and 6m respectively, and the steel columns are 50X50mm square steel, which are the best values ​​for the technical problem solved by the technical solution of the present invention. In actual applications or experiments, those skilled in the art can adaptively adjust the preset maximum heat transfer coefficient according to the actual application environment and application scenario.

[0107] In implementation, if the difference between the maximum heat transfer coefficient and the preset maximum heat transfer coefficient increases by 0.001 W / (m·K), the splicing gap width increases by 0.5 mm. For example, if the difference between the maximum heat transfer coefficient and the preset maximum heat transfer coefficient is 0.003 W / (m·K), and the current splicing gap width is 0s, the splicing gap width increases to 0.5 mm×3=1.5 mm.

[0108] In implementation, the method of the present invention determines the width of the splicing gaps between the rock wool in the wall panels in the farmhouse prediction model. The stress of the steel columns in the transition area is uneven, and there are many gaps, holes or loose connection nodes, which increases the heat transfer in the area, and then causes heat to be transferred to the inside of the wall through the steel columns, forming a thermal bridge effect, and reducing the overall thermal insulation performance. By increasing the width of the splicing gaps to form a local enclosed air cavity, the low thermal conductivity of air is used to reduce heat transfer, effectively alleviate the thermal bridge effect, and improve the thermal insulation performance of the wall.

[0109] Specifically, the interior structure includes a roof 1, a floor 3, doors and windows 4, photovoltaic panels 5, interior walls and floor slabs 2, and rock wool inside the wall panels.

[0110] Specifically, the wall panel structure includes wall panels of several sizes.

[0111] Specifically, several pieces of rock wool are laid between the wall panels and the interior walls.

[0112] Specifically, the wall panel 6 adopts a panel based on aluminum honeycomb, wherein the components of the panel based on aluminum honeycomb from the inside to the outside are aluminum profiles, auxiliary materials, glass fiber + polyurethane, aluminum core honeycomb, galvanized steel plate, angle code for connecting with the main steel structure module, and butterfly core used as a connecting part of the panel module. Examples of auxiliary materials include ceramic tiles, wood veneer, stone, rock slabs, and ceramic panels.

[0113] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A method for constructing a farmhouse based on combined prefabricated wall panels, characterized in that: include: According to the farmhouse prediction model, bolts are embedded in the foundation concrete at the assembly site, and steel columns, steel beams and floor support steel are installed in sequence to form a steel structure frame; respectively obtaining a stress distribution diagram of the steel structure frame and a maximum heat transfer coefficient of the steel column; Pre-joining the pre-joined wall panels and the steel structure frame, and detecting the shape deviation between the pre-joined wall panels and the simulated wall panels in the farmhouse prediction model, the impact load borne by the pre-joined wall panels, and the temperature change at the joint between the pre-joined wall panels and the steel structure frame within a certain number of unit joint times; constructing a wall panel edge wear model according to the morphological deviation, the impact load, and the temperature variation, and adjusting the splicing hot air temperature according to the wall panel edge wear model; Determining a treatment method for wall panel structural stability based on the stress distribution diagram, including adjusting the misalignment angle of serrations on the edges of the wall panels when the wall panels are spliced, or determining a splicing gap width between rock wool within the wall panels in the farmhouse prediction model based on the maximum heat transfer coefficient; Splicing the steel structure frame and the wall panel structure according to the splicing hot air temperature and the wall panel structure stability treatment method to form an external maintenance structure of the farmhouse; Installing an interior structure on the exterior maintenance structure of the farmhouse to form a combined farmhouse; The wall panel edge wear model is constructed according to the morphological deviation, the impact load, and the temperature change, including: Obtaining measured three-dimensional data of several sampling positions at the connection between the pre-joined wall panels and the steel structure frame; Comparing the measured three-dimensional data with the theoretical three-dimensional data of the corresponding position of the simulated wall panel in the farmhouse prediction model to output the morphological deviation amount; Constructing the wall panel edge wear model based on the morphological deviation, the impact load, and the temperature change; Adjusting the splicing hot air temperature according to the wall panel edge wear model includes: Obtaining the wear depth of the pre-joined wall panels under the current working condition in the wall panel edge wear model; calculating a wallboard wear rate according to the wear depth; If the wall panel wear rate is greater than or equal to the preset wear rate, the splicing hot air temperature is increased.

2. The method for constructing a farmhouse based on combined prefabricated wall panels according to claim 1, characterized in that: The wall panel wear rate is a ratio of a difference between an actual height of the pre-spliced ​​wall panel before splicing and the wear depth to the actual height.

3. The method for constructing a farmhouse based on combined prefabricated wall panels according to claim 2, characterized in that: Adjust the offset angle of the serrations on the edge of the wall panels when splicing them, including: Comparing the stress in the stress distribution diagram with a preset first stress and a preset second stress respectively; If the stress is greater than or equal to the preset second stress, the area is divided into a load-bearing area, and the staggered angle of the serrations on the edge of the wall panels in the load-bearing area is increased when the wall panels are spliced; If the stress is greater than or equal to the preset first stress and less than the preset second stress, the area is divided into a transition area, and the maximum heat transfer coefficient of the steel column corresponding to the transition area is obtained; If the stress is less than the preset first stress, it is divided into a buffer area; Wherein, the preset first stress is smaller than the preset second stress.

4. The method for constructing a farmhouse based on combined prefabricated wall panels according to claim 3 is characterized in that: The misalignment angle is the angle formed by the center line of the tooth peaks of the saw teeth on the edge of the wall panel and the center line of the tooth peaks of the saw teeth on the edge of another wall panel to which it is spliced.

5. The method for constructing a farmhouse based on combined prefabricated wall panels according to claim 4, characterized in that: Determining the width of the joint gap between rock wool in the wall panels of the farmhouse prediction model according to the maximum heat transfer coefficient includes: Comparing the maximum heat transfer coefficient of the steel column corresponding to the transition area with a preset maximum heat transfer coefficient; If the maximum heat transfer coefficient is greater than or equal to the preset maximum heat transfer coefficient, the width of the splicing gap between the rock wool in the wall panel is increased.

6. The method for constructing a farmhouse based on combined prefabricated wall panels according to claim 5, characterized in that: The width of the splicing gap is positively correlated with the maximum heat transfer coefficient.

7. The method for constructing a farmhouse based on combined prefabricated wall panels according to claim 6, characterized in that: The impact load is the maximum stress to which the pre-spliced ​​wall panels are subjected within a unit splicing time.

8. The method for constructing a farmhouse based on combined prefabricated wall panels according to claim 7, characterized in that: The temperature variation is the difference between the temperature at the splicing point at the end of the unit splicing time and the temperature at the splicing point at the start of the unit splicing time.

Images