Construction method of building wall with thermal insulation performance

Abstract

The invention relates to the technical field of wall construction, in particular to a construction method of a building wall with thermal insulation performance, which comprises the following steps: dividing the building wall into a plurality of thermal insulation areas, and determining the preset thickness and the weight of a thermal insulation layer; the comprehensive risk coefficient is calculated, the number maximum value verification is carried out, and the actual set number of the tie bars in any heat preservation area is determined; calculating the estimated temperature attenuation rate after the inner wall is provided with the thermal insulation layer and the tie bars to predict the thermal insulation capacity of the wall body, and judging whether the determined preset thickness and the setting of the actual setting parameters are reasonable or not to determine whether the wall body needs secondary prediction analysis or not; when the setting is unreasonable, the influence of the tie bars on the heat insulation effect is quantified, the unreasonable reason is judged, the preset thickness is correspondingly adjusted or the actual setting number is reduced, and when the wall needs secondary prediction analysis, whether the wall has the cracking risk or not is determined. The design parameters of the wall body are adjusted by calculating the heat preservation capacity of the wall body before building, and the heat preservation performance of the wall body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wall construction, in particular to a construction method of a building wall with thermal insulation performance. Background Art

[0002] The thermal insulation performance of building walls is a key factor affecting building energy consumption, indoor comfort, and environmental sustainability. With the intensification of the global energy crisis and the popularization of green building concepts, the development of efficient, durable, and easy-to-install thermal insulation wall technologies has become a key research direction in the construction field.

[0003] Chinese Patent Publication No.: CN103790261A discloses an insulation wall, including a wall, an insulation board, a wire mesh, and mortar. The wall is provided with a hole, the insulation board is provided with a hole, the hole in the insulation board is provided with an insulation sleeve composed of a sleeve, a hard rod, and a plug, and the end of the insulation sleeve has a flange. The construction method includes the following steps: drilling a hole in the wall, drilling a hole on the insulation board, and installing the insulation board on the outside of the wall; inserting the insulation sleeve into the hole on the insulation board; fixing the wire mesh on the outside of the insulation board; applying mortar on the outside of the insulation board, and finally plastering the inside of the wall and the outside of the mortar to form an integral insulation wall. It can be seen that the construction method of the exterior facade of the insulation wall has the following problems: The outer leaf wall and the insulation layer are easily deformed due to temperature difference or fall off due to wind pressure. After the wall construction is completed, it is found that the insulation performance does not meet the requirements and rework is required, which greatly reduces the construction efficiency. Summary of the Invention

[0004] To this end, the present invention provides a construction method for building walls with thermal insulation performance, which is used to overcome the problem in the prior art that the outer leaf wall and the insulation layer are easily deformed due to temperature difference or fall off due to wind pressure, and after the wall construction is completed, it is detected that the thermal insulation performance does not meet the requirements and rework is required, which greatly reduces the construction efficiency.

[0005] To achieve the above object, the present invention provides a method for constructing a building wall with thermal insulation performance, comprising: Dividing the building wall into a plurality of insulation areas according to the insulation layer, wherein the insulation areas include a primary insulation area and a secondary insulation area; Determine the preset thickness and weight of the insulation layer based on the insulation area type and layout, as well as the corresponding floor height. Calculate the comprehensive risk factor based on the wind risk factor and the temperature difference risk factor. Perform a maximum quantity check to determine the actual number of tie bars in any insulation area. Calculate the actual temperature decay rate of the enclosed area enclosed by the inner leaf wall of the first layer. Combine the preset thickness of the insulation layer and the actual setting parameters to infer the estimated temperature decay rate of the inner leaf wall after the insulation layer and tie bars are installed. Predict the thermal insulation capacity of the wall based on the estimated temperature decay rate. Based on the predicted thermal insulation capacity, determine whether the preset thickness and actual setting parameters are reasonable, and determine whether the wall needs a secondary prediction analysis; When the setting is unreasonable, the influence of the tie bars set according to the actual setting parameters on the thermal insulation effect is quantified. The reason for the unreasonableness is judged to be that the target U value of the heat transfer coefficient does not match the environment, or the tie bars cause excessive heat loss. The preset thickness is adjusted accordingly, or the actual setting number is reduced to increase the bonding strength of the foam glue between the layers; When the wall requires secondary prediction analysis, the cracking risk coefficient is calculated based on the theoretical deformation and allowable deformation to determine whether the wall has a cracking risk. Accordingly, it is determined whether the expansion joint cutting method needs to be determined based on the floor height and single-sided wall height.

[0006] Furthermore, the process of predicting the thermal insulation capacity of the wall according to the estimated temperature decay rate includes: After the inner leaf wall of the first floor is constructed to form a closed space, the indoor temperature of the closed space is increased to calculate the actual temperature decay rate of the closed area surrounded by the inner leaf wall of the first floor; The comprehensive U value of the inner leaf wall, the insulation layer and the tie bars is calculated based on the preset thickness of the insulation layer and the actual setting parameters, and the estimated temperature decay rate is calculated based on the actual temperature decay rate.

[0007] Furthermore, the estimated temperature decay rate is compared with the standard decay intervals of the primary insulation area and the secondary insulation area respectively; When the estimated temperature decay rate is lower than the standard decay range, the wall's insulation capacity is judged to meet the insulation requirements of the primary and secondary insulation areas, and the preset thickness and actual setting parameters are determined to be reasonable; When the estimated temperature decay rate exceeds the standard decay range, it is determined that the wall's insulation capacity does not meet the insulation requirements of the primary and secondary insulation areas, and the determined preset thickness and actual setting parameters are unreasonable; When the estimated temperature decay rate is within the standard decay range, it is necessary to perform a secondary analysis to determine whether the wall is good or not.

[0008] Furthermore, the process of quantifying the effect of tie bars set according to actual setting parameters on the thermal insulation effect includes: The sum of the actual number of insulation areas constituting the enclosed space is determined, and the total amount of heat conducted per unit time by the tie bars of the sum of the actual number of areas is calculated.

[0009] Furthermore, the process of determining the unreasonable reasons includes: When the actual ratio of the total heat to the heat loss of the enclosed space is less than the critical threshold, the reason for the unreasonable judgment is that the target U value of the heat transfer coefficient does not match the environment, resulting in the preset thickness of the insulation layer not meeting the requirements; When the actual ratio of the total heat to the heat loss of the enclosed space is greater than or equal to the critical threshold, the unreasonable reason is that the tie reinforcement causes excessive heat loss.

[0010] Furthermore, when the target U value does not match the environment, the preset thickness is adjusted by adjusting the target U value; When the tie bars cause excessive heat loss, the actual setting quantity is reduced by adjusting the quantity compensation coefficient, while increasing the bonding strength of the foam glue between the insulation layer and the outer leaf wall.

[0011] Furthermore, the secondary analysis process includes calculating the cracking risk coefficient based on the theoretical deformation and the allowable deformation; If the cracking risk coefficient is less than the standard coefficient, it is judged that there is no cracking risk on the wall; if the cracking risk coefficient is greater than or equal to the standard coefficient, it is judged that there is a cracking risk on the wall; When there is a risk of cracking in the wall, the expansion joint cutting method is determined according to the floor height and the single wall height.

[0012] Furthermore, the process of determining the preset thickness of the corresponding insulation layer includes: Set the target U-value according to the insulation requirements of the primary insulation area and the secondary insulation area, set the heat loss coefficient according to the layout type of the regional layout of the insulation area, set the adjustment coefficient according to the floor height, and determine the preset thickness and weight of the insulation layer.

[0013] Furthermore, the process of determining the actual number of tie bars to be provided in any insulation zone includes: The comprehensive risk coefficient of any insulation area is determined based on the wind risk coefficient and the temperature difference risk coefficient combined with the weight of the insulation layer, and the initial number of tie bars in this insulation area is determined based on the comprehensive risk coefficient and the tie bar parameters.

[0014] Furthermore, the process of checking the maximum number includes: The initial setting quantity is rounded up to determine the rounded setting quantity within this insulation zone. When the rounded setting quantity is less than or equal to the maximum setting quantity, the actual setting quantity is the rounded setting quantity. When the rounded setting quantity is greater than the maximum setting quantity, the actual setting quantity takes the maximum setting quantity, and the preset initial setting depth of the tie bar in the inner leaf wall is adjusted to the actual setting depth.

[0015] Compared with the prior art, the beneficial effect of the present invention is that the outer walls of a building correspond to different internal areas of the building, and the insulation requirements of corridors, bathrooms, stairwells and other areas are lower than those of bedrooms, living rooms, study rooms and other areas. The method divides the wall into several equal insulation areas according to the size of the insulation material board, and determines the area type of the corresponding insulation area as the main insulation area or the secondary insulation area according to the internal area; similarly, one, two or three sides of the internal area are composed of outer walls, and the corresponding area layout has different degrees of heat loss. The floor height of the building is related to the wind force it withstands, and different wind forces affect the temperature of the area. The method determines the heat loss coefficient of the insulation area according to the area layout, sets the adjustment coefficient according to the floor height, and calculates the preset thickness of the insulation layer corresponding to several insulation areas according to the above parameters, thereby increasing the adaptability of the insulation performance of the building wall to the differences in environmental factors caused by the area type and area layout and height inside the building, and improving the insulation accuracy for different insulation requirements in different areas.

[0016] Furthermore, the temperature difference experienced by the outer blade wall reflects the thermal stress and deformation risk caused by temperature changes. The wind pressure it experiences affects the bearing capacity of the outer blade wall. The outer blade wall and the insulation layer are prone to deformation due to temperature differences or separation due to wind pressure. This method calculates the comprehensive risk factor of any insulation area based on the maximum wind speed, maximum temperature difference, outer blade wall flatness, the height and length of the insulation area, and the thermal expansion coefficients of the inner and outer blade wall materials. The initial number of tie bars in this insulation area is determined based on the comprehensive risk factor and tie bar parameters to avoid the risk of outer blade wall separation due to wind fluctuations. The initial number is compared with the maximum number of tie bars in the insulation area to determine the actual number of tie bars to be installed and the initial installation depth of the tie bars in the corresponding insulation area is adjusted. If the required number of tie bars is too large, the fixing depth of the tie bars is appropriately increased to compensate for the risk of insufficient number. On the one hand, this can avoid excessive heat loss caused by too many tie bars. On the other hand, overly dense fixing holes can significantly weaken the wall strength. This method can reduce this weakening and dynamically optimize the arrangement of tie bars in the inner blade wall while ensuring structural safety.

[0017] Furthermore, the preset thickness of the insulation layer is a preset value calculated based on the set target U value, and the actual number and actual depth of the tie bars are preset values adjusted based on the comprehensive risk factor. This method calculates the actual temperature decay rate of the closed area surrounded by the inner leaf wall in one layer, and combines the preset thickness of the insulation layer and the actual setting parameters to deduce the estimated temperature decay rate after the insulation layer and tie bars are set on the inner leaf wall. The thermal insulation capacity of the wall after masonry according to the determined preset thickness and actual setting parameters is predicted, and whether the determined preset thickness and actual setting parameters are reasonable is judged. If they are unreasonable, the influence of the tie bars set according to the actual setting parameters on the thermal insulation effect is quantified, and the inappropriateness is judged. The rationale is that the target U value of the heat transfer coefficient does not match the environment, resulting in the preset thickness of the insulation layer not meeting the requirements, or the tie bars cause excessive heat loss; accordingly, the preset thickness is adjusted by adjusting the target U value, and the actual set quantity is reduced by adjusting the quantity compensation coefficient while increasing the bonding strength of the foam glue between the insulation layer and the outer leaf wall, thereby compensating for the impact of the reduction in the number of tie bars on the tightness of the connection; this method predicts whether the thermal insulation performance of the wall meets the requirements and accordingly determines the reasons for not meeting the requirements and takes corresponding adjustment measures, thereby avoiding rework due to the detection that the thermal insulation performance does not meet the requirements after the wall construction is completed, thereby improving the construction efficiency of the walls of buildings with thermal insulation performance.

[0018] Furthermore, when predicting the thermal insulation capacity of the wall after being built according to the determined preset thickness and actual setting parameters, the method compares the estimated temperature decay rate with the standard attenuation intervals of the primary insulation area and the secondary insulation area respectively. Since the standard attenuation interval is narrow, the thermal insulation capacity of the primary insulation area and the secondary insulation area only needs to be no lower than the preset corresponding interval. When the estimated temperature decay rate falls within the standard attenuation interval of the primary insulation area and the secondary insulation area, the thermal insulation performance meets the requirements but may be at the bottom of the interval. It is necessary to analyze the cracking risk of the wall based on the maximum temperature difference between the inner leaf wall and the outer leaf wall to ensure the thermal insulation performance and structural stability of the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall flow chart of the construction method of a building wall with thermal insulation performance in this embodiment; Figure 2 Schematic diagram of the side cross-sectional structure of a building wall with thermal insulation performance in this embodiment; Figure 3 This is a schematic diagram of dividing the wall surface to be constructed into several installation areas according to the sizes of the components to be installed or the groups of components to be installed as described in this embodiment; Figure 4 This is a schematic diagram of dividing the construction wall into primary insulation areas and secondary insulation areas according to the use functions of each room in the building according to this embodiment; In the figure: 1-outer leaf wall, 2-insulation layer, 3-inner leaf wall, 4-tie reinforcement. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] See also Figure 1-4 As shown, Figure 1 This is an overall flow chart of the construction method of a building wall with thermal insulation performance in this embodiment; Figure 2 Schematic diagram of the side cross-sectional structure of a building wall with thermal insulation performance in this embodiment; Figure 3 This is a schematic diagram of dividing the wall surface to be constructed into several installation areas according to the sizes of the components to be installed or the groups of components to be installed as described in this embodiment; Figure 4 This is a schematic diagram of dividing the construction wall into primary insulation areas and secondary insulation areas according to the use functions of each room in the building as described in this embodiment.

[0025] An embodiment of the present invention provides a method for constructing a building wall with thermal insulation performance, comprising: Step S1, dividing the building wall into a plurality of insulation areas according to the standard size of the insulation material constituting the insulation layer, presetting tie bars within a plurality of insulation areas according to initial setting parameters, and dividing the insulation areas into primary insulation areas and secondary insulation areas according to the functions of the internal areas of the wall; Step S2, determining a preset thickness and weight of the insulation layer corresponding to the insulation area according to the area type and area layout of the insulation area and the corresponding floor height; Step S3, determining a comprehensive risk coefficient for any insulation area based on the wind risk coefficient and the temperature difference risk coefficient in combination with the weight of the insulation layer, and determining an initial number of tie bars in any insulation area based on the comprehensive risk coefficient and tie bar parameters; Step S4, rounding the initial set quantity and checking the maximum value of the quantity to determine the actual set quantity and actual set depth of the tie bars; Step S5, calculating the actual temperature decay rate of the enclosed area enclosed by the inner leaf wall of one layer, and calculating the estimated temperature decay rate after the inner leaf wall is provided with the insulation layer and tie bars in combination with the preset thickness of the insulation layer and the actual setting parameters; Step S6, predicting the thermal insulation capacity of the wall after being built according to the determined preset thickness and actual setting parameters based on the estimated temperature decay rate, and determining whether the determined preset thickness and actual setting parameters are reasonable or whether the wall needs secondary analysis; Step S7: quantifying the effect of the tie bars set according to the actual setting parameters on the thermal insulation effect when the value is unreasonable, and determining that the unreasonableness is caused by the target U value of the heat transfer coefficient not matching the environment, resulting in the preset thickness of the insulation layer not meeting the requirements, or the tie bars causing excessive heat loss; Step S8: If the unreasonable reason is the heat transfer coefficient, the preset thickness is adjusted by adjusting the target U value; if the unreasonable reason is excessive heat loss, the actual set quantity is reduced by adjusting the quantity compensation coefficient, while increasing the bonding strength of the foam glue between the insulation layer and the outer leaf wall; Step S9: When the wall requires secondary analysis, the cracking risk coefficient is calculated based on the theoretical deformation and the allowable deformation to determine whether the wall has a cracking risk. If there is a cracking risk, the expansion joint cutting method is determined based on the floor height and the single-sided wall height to perform expansion joint cutting.

[0026] In this embodiment, the building wall includes an inner leaf wall 3, an insulation layer 2, and an outer leaf wall 1 from the inside to the outside. Low thermal conductivity tie bars 4 (such as FRP bars) are used instead of metal steel bars. When the building wall is built, the tie bars 4 are reserved and extended into the insulation layer 2 and the outer leaf wall 1. In practice, the horizontal spacing of the tie bars is 500mm to 600mm, and the vertical spacing is determined according to the wall type and design requirements, and the vertical spacing does not exceed 800mm; In this embodiment, after the inner leaf wall is built, the tie bars are drilled and planted according to the initial setting parameters, and the tie bars pass through the insulation layer to the outer leaf wall.

[0027] During implementation, the building wall is divided into several insulation areas before the inner leaf wall is built according to the standard sizes of the insulation materials that make up the insulation layer, such as EPS boards, XPS boards, and rock wool boards; like Figure 3 As shown, the square area in the A box is a heat preservation area in this embodiment, as shown in FIG. Figure 4 As shown, the vertical box area in box B1 is the corridor, and the box areas in boxes B2 and B3 are bedrooms.

[0028] The initial setting parameters are the initial setting number and initial setting depth of the tie bars in any insulation area.

[0029] According to the use function of each room in the building, the construction wall is divided into the main insulation area and the secondary insulation area.

[0030] Specifically, for locations with lower insulation requirements such as corridors, bathrooms, and stairwells, the corresponding insulation areas will be designated as secondary insulation areas; for locations with higher insulation requirements such as bedrooms, living rooms, and study rooms, the corresponding insulation areas will be designated as primary insulation areas.

[0031] For primary and secondary insulation areas, the preset thickness of the insulation layer is determined based on the area type (primary insulation area, secondary insulation area), area layout (one, two, or three sides of the area are composed of exterior walls, and exterior walls refer to walls with one indoor and one outdoor side), and floor height, and the weight of the insulation layer is determined accordingly; Set the target U-value of the heat transfer coefficient according to the area type. The higher the target U-value of the heat transfer coefficient, the greater the risk of heat loss. During implementation, the target U value can be set according to the insulation requirements. The target U value of the heat transfer coefficient of the main insulation area is ≤0.3W / (㎡·K), and the target U value of the heat transfer coefficient of the secondary insulation area is ≤0.5 W / (㎡·K).

[0032] The zone layout determines the heat loss coefficient of the insulation zone. If the zone layout type is single-sided exterior wall, set the heat loss coefficient β to 1.0; if the zone layout type is double-sided exterior wall, set the heat loss coefficient β to 1.5; if the zone layout type is three-sided exterior wall, set the heat loss coefficient β to 2.0; The adjustment coefficient γ is set according to the floor height H corresponding to the different insulation areas of the building wall: low-rise γ=1.0, middle-rise γ=1.2, and high-rise γ=1.5; In this embodiment, floors 1-3 are low-rise, floors 4-10 are middle-rise, and floors 10 and above are high-rise.

[0033] According to the target U value, thermal conductivity of the insulation material (λ), heat loss coefficient β, and adjustment coefficient γ, the preset thickness δ of the insulation layer corresponding to the insulation area is calculated. δ=λ×(1 / UR 其 ) × β × γ; Where R 其 The thermal resistance of the inner and outer leaf walls is usually between 0.1 and 0.2 (m2·K) / W for concrete or brick walls. λ is the thermal conductivity of the material, for example, the λ of rock wool is 0.035 W / (m·K). It is understandable that the implementer can calculate the weight G of the insulation layer of the corresponding area based on the preset thickness δ and the area of the area, which will not be repeated here.

[0034] During implementation, when different insulation areas have different preset thicknesses, an air layer is retained between the outer leaf wall and the insulation layer, or the interlayer gaps caused by different preset thicknesses are filled with foam.

[0035] Specifically, the outer walls of a building correspond to different internal areas of the building. The insulation requirements of corridors, bathrooms, stairwells and other areas are lower than those of bedrooms, living rooms, study rooms and other areas. This method divides the wall into several equal insulation areas according to the size of the insulation material board, and determines the area type of the corresponding insulation area as the main insulation area or the secondary insulation area according to the internal area; similarly, one, two or three sides of the internal area are composed of outer walls, and the corresponding area layout has different degrees of heat loss. The floor height of the building is related to the wind force it withstands, and the temperature of the area is affected by different wind forces. This method determines the heat loss coefficient of the insulation area according to the area layout, sets the adjustment coefficient according to the floor height, and calculates the preset thickness of the insulation layer corresponding to several insulation areas according to the above parameters, thereby increasing the adaptability of the insulation performance of the building wall to the differences in environmental factors caused by the area type and area layout and height inside the building, and improving the insulation accuracy for different insulation requirements in different areas.

[0036] Determine the initial setting parameters of the tie bars, wherein the initial setting parameters are the initial setting number and initial setting depth of the tie bars in any insulation area.

[0037] Determine the initial number and depth of tie bars in any insulation area based on the comprehensive risk factor of the outer leaf wall of any insulation area and the weight of the insulation layer; Specifically, the comprehensive risk coefficient N of any insulation area is determined based on the wind risk coefficient W and the temperature difference risk coefficient C combined with the insulation layer weight G; ; Wherein, the wind risk coefficient W=(H / H0)×(V1 / V0) 2 ×K1, the temperature difference risk coefficient C=ΔT×|α1-α2|×L; Where H is the floor height of the insulation area, H0 is the reference height, V1 is the maximum wind speed in the area where the building is located last year, V0 is the reference wind speed, K1 is the exterior wall shape coefficient related to the flatness of the exterior leaf wall, ΔT is the maximum temperature difference in the area where the building is located last year, α1 and α2 are the thermal expansion coefficients of the inner and outer leaf wall materials, and L is the length of the insulation area.

[0038] Determine the initial number p of tie bars in the insulation area based on the comprehensive risk factor and tie bar parameters in the insulation area; Specifically, p=N×G×K2 / (ft×As), where ft is the bearing capacity of the tie bar, As is the cross-sectional area of the tie bar, and K2 is the quantity compensation coefficient.

[0039] In this embodiment, ft = 200 MPa, As = 28.3 mm 2 ,H0=10m,V0=20m / s,K=1.3.

[0040] The initial setting quantity p is rounded up to determine the rounded setting quantity P in the insulation area; the rounded setting quantity is checked for the maximum setting quantity to determine the actual setting quantity and the actual setting depth; The maximum setting quantity Pmax is preset. If the rounded setting quantity is greater than the maximum setting quantity, the actual setting quantity is the maximum setting quantity, and the preset initial setting depth of the tie bar in the inner leaf wall is adjusted; Specifically, the initial setting depth of the tie bar in the inner leaf wall is increased according to the ratio of the rounded setting number to the maximum setting number, and the increased initial setting depth is the actual setting depth; If the rounded setting quantity is less than or equal to the maximum setting quantity, the actual setting quantity is the rounded setting quantity; The actual setting quantity and the actual setting depth constitute actual setting parameters.

[0041] Specifically, the temperature difference experienced by the outer blade wall reflects the thermal stress and deformation risk caused by temperature changes. The wind pressure it experiences affects the bearing capacity of the outer blade wall. The outer blade wall and the insulation layer are prone to deformation due to temperature differences or separation due to wind pressure. This method calculates the comprehensive risk factor of any insulation area based on the maximum wind speed, maximum temperature difference, outer blade wall flatness, the height and length of the insulation area, and the thermal expansion coefficient of the inner and outer blade wall materials. The initial number of tie bars in this insulation area is determined based on the comprehensive risk factor and tie bar parameters to avoid the risk of outer blade wall separation due to wind fluctuations. The initial number of tie bars is compared with the maximum number of tie bars in the insulation area to determine the actual number of tie bars and adjust the initial depth of the tie bars in the corresponding insulation area. If the required number of tie bars is too large, the risk of insufficient number can be compensated by appropriately increasing the fixing depth of the tie bars. On the one hand, this can avoid excessive heat loss caused by excessive tie bars. On the other hand, overly dense fixing holes can significantly weaken the wall strength. This method can reduce this weakening and dynamically optimize the arrangement of tie bars in the inner blade wall while ensuring structural safety.

[0042] After the inner leaf wall of the first floor is constructed to form an enclosed space, the indoor temperature of the enclosed space is raised to the target temperature and then the temperature increase is stopped. The actual temperature decay rate of the enclosed area surrounded by the inner leaf wall of the first floor is calculated; Actual temperature decay rate = (target temperature - indoor temperature after unit time) / unit time, and the estimated temperature decay rate under the predetermined thickness of the insulation layer is predicted based on the actual temperature decay rate; Determine the original U-value of the inner leaf wall, calculate the comprehensive U-value of the inner leaf wall, the insulation layer, and the tie bar based on the preset thickness of the insulation layer and the actual setting parameters, and deduce the estimated temperature decay rate; Comprehensive U value = 1 / [(1 / original U value) + (preset thickness / material thermal conductivity) + (set volume / tie reinforcement thermal conductivity)]; Setting volume = (the sum of the actual number of insulation areas × the actual setting depth of the corresponding insulation areas) × As, estimated temperature decay rate = actual temperature decay rate × comprehensive U value / original U value.

[0043] Comparing the estimated temperature decay rate with the standard decay intervals of the primary insulation area and the secondary insulation area, respectively, to predict the thermal insulation capacity of the wall after being built according to the predetermined preset thickness and actual setting parameters; When the estimated temperature decay rate is lower than the standard decay range, the wall's insulation capacity is judged to meet the insulation requirements of the primary and secondary insulation areas, and the preset thickness and actual setting parameters are determined to be reasonable; When the estimated temperature decay rate exceeds the standard decay range, it is determined that the wall's insulation capacity does not meet the insulation requirements of the primary and secondary insulation areas, and the determined preset thickness and actual setting parameters are unreasonable; When the estimated temperature decay rate is within the standard decay range, it is determined that the wall requires secondary analysis; The standard attenuation range of the primary area is (0.5-1)°C / h, and the standard attenuation range of the secondary area is (1-2)°C / h.

[0044] When the preset thickness and the actual setting parameters are unreasonable, quantify the impact of the tie bars set according to the actual setting parameters on the thermal insulation effect and determine the cause of the unreasonableness; The process of quantifying the effect of tie bars set according to actual setting parameters on the insulation performance includes: Determine the actual sum n of the number of insulation areas that constitute the enclosed space, and calculate the total heat Qt conducted by the n tie bars per unit time t; ; Where λ is the thermal conductivity of the tie bar material, ΔT is the maximum temperature difference between indoor and outdoor temperatures, and D is the average of the actual setting depths of several insulation areas.

[0045] When the actual ratio of the total heat Qt to the heat loss of the enclosed space is less than the critical threshold, the reason for the unreasonable judgment is that the target U value of the heat transfer coefficient does not match the environment, resulting in the preset thickness of the insulation layer not meeting the requirements. The target U value is reduced according to the ratio of the actual ratio to the critical threshold. In practice, heat loss in a closed space = (target temperature - indoor temperature after unit time) × space area × air specific heat capacity.

[0046] When the actual ratio of the total heat Qt to the heat loss of the enclosed space is greater than or equal to the critical threshold, it is determined that the heat loss caused by the tie bars is too large, the actual number of tie bars is reduced, and the bonding strength of the foam glue in the corresponding insulation area is adjusted; Specifically, the actual setting quantity is reduced by reducing the quantity compensation coefficient, thereby increasing the bonding strength of the foam glue; During implementation, implementers can increase the content of polymers such as acrylic emulsion in the foam glue or add reinforcing materials such as SiO2 nanoparticles to improve the bonding strength of the foam glue.

[0047] Wherein, the critical threshold is 5%.

[0048] Specifically, the preset thickness of the insulation layer is a preset value calculated based on the set target U value, and the actual number and depth of the tie bars are preset values adjusted based on the comprehensive risk factor. This method calculates the actual temperature decay rate of the closed area surrounded by the inner leaf wall in one layer, and combines the preset thickness of the insulation layer and the actual setting parameters to deduce the estimated temperature decay rate after the insulation layer and tie bars are set on the inner leaf wall. The thermal insulation capacity of the wall after masonry according to the determined preset thickness and actual setting parameters is predicted, and whether the determined preset thickness and actual setting parameters are reasonable are judged. If they are unreasonable, the influence of the tie bars set according to the actual setting parameters on the thermal insulation effect is quantified, and the inappropriateness is judged. The rationale is that the target U value of the heat transfer coefficient does not match the environment, resulting in the preset thickness of the insulation layer not meeting the requirements, or the tie bars cause excessive heat loss; accordingly, the preset thickness is adjusted by adjusting the target U value, and the actual set quantity is reduced by adjusting the quantity compensation coefficient while increasing the bonding strength of the foam glue between the insulation layer and the outer leaf wall, thereby compensating for the impact of the reduction in the number of tie bars on the tightness of the connection; this method predicts whether the thermal insulation performance of the wall meets the requirements and accordingly determines the reasons for not meeting the requirements and takes corresponding adjustment measures, thereby avoiding rework due to the detection that the thermal insulation performance does not meet the requirements after the wall construction is completed, thereby improving the construction efficiency of the walls of buildings with thermal insulation performance.

[0049] The secondary analysis process includes: The insulation layer and outer leaf wall are connected to the inner leaf wall through tie bars. The different thermal expansion and contraction rates of the inner and outer wall materials pose a risk of cracking. The temperature difference between the inside and outside of different areas leads to different cracking risks. Calculate the cracking risk coefficient based on the theoretical deformation and allowable deformation to determine whether there is a cracking risk; The theoretical deformation is consistent with the temperature difference risk coefficient calculation formula, the theoretical deformation = ΔT × |α1-α2| × L, where ΔT is the preset maximum temperature difference between the inner and outer blade walls; Specifically, the cracking risk coefficient = theoretical deformation / allowable deformation, where the allowable deformation is the elastic deformation of the foam; If the cracking risk coefficient is less than the standard coefficient, it is judged that there is no cracking risk on the wall; if the cracking risk coefficient is greater than or equal to the standard coefficient, it is judged that there is a cracking risk on the wall; When there is a risk of cracking in the wall, the expansion joint cutting method is determined according to the floor height and the height of the single wall to prevent cracking; Specifically, the expansion joint cutting method is determined according to the floor height and the single wall height. When the single wall height is greater than 6m, a vertical expansion joint is set; when the single wall height is less than or equal to 6m, a horizontal expansion joint is set every 2 floors; In practice, the horizontal expansion joint is 15-20 mm wide and filled with silicone sealant, and the spacing between the vertical expansion joints is less than or equal to 5 m.

[0050] The standard coefficient is 0.5, and the allowable deformation in this embodiment is 5 mm.

[0051] Specifically, when predicting the thermal insulation capacity of the wall after being built according to the predetermined preset thickness and actual setting parameters, this method compares the estimated temperature decay rate with the standard attenuation intervals of the primary insulation area and the secondary insulation area respectively. Since the standard attenuation interval is narrow, the thermal insulation capacity of the primary insulation area and the secondary insulation area only needs to be no lower than the preset corresponding interval. When the estimated temperature decay rate falls within the standard attenuation interval of the primary insulation area and the secondary insulation area, the thermal insulation performance meets the requirements but may be at the bottom of the interval. It is necessary to analyze the cracking risk of the wall based on the maximum temperature difference between the inner leaf wall and the outer leaf wall to ensure the thermal insulation performance and structural stability of the wall.

[0052] After determining the preset thickness of the insulation layer, there will be air layers in some areas, and foam glue is used to fill the uneven gaps.

[0053] 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.

[0054] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for constructing a building wall with thermal insulation performance, characterized in that: include, Dividing the building wall into a plurality of insulation areas according to the insulation layer, wherein the insulation areas include a primary insulation area and a secondary insulation area; Determine the preset thickness and weight of the insulation layer based on the insulation area type and layout, as well as the corresponding floor height. Calculate the comprehensive risk factor based on the wind risk factor and the temperature difference risk factor. Perform a maximum quantity check to determine the actual number of tie bars in any insulation area. Calculate the actual temperature decay rate of the enclosed area enclosed by the inner leaf wall of the first layer. Combine the preset thickness of the insulation layer and the actual setting parameters to infer the estimated temperature decay rate of the inner leaf wall after the insulation layer and tie bars are installed. Predict the thermal insulation capacity of the wall based on the estimated temperature decay rate. Based on the predicted thermal insulation capacity, determine whether the preset thickness and actual setting parameters are reasonable, and determine whether the wall needs a secondary prediction analysis; When the setting is unreasonable, the influence of the tie bars set according to the actual setting parameters on the thermal insulation effect is quantified. The reason for the unreasonableness is judged to be that the target U value of the heat transfer coefficient does not match the environment, or the tie bars cause excessive heat loss. The preset thickness is adjusted accordingly, or the actual setting number is reduced to increase the bonding strength of the foam glue between the layers; When the wall requires secondary prediction analysis, the cracking risk coefficient is calculated based on the theoretical deformation and allowable deformation to determine whether the wall has a cracking risk. Accordingly, it is determined whether the expansion joint cutting method needs to be determined based on the floor height and single-sided wall height.

2. The construction method of a building wall with thermal insulation performance according to claim 1, characterized in that: The process of predicting the thermal insulation capacity of the wall according to the estimated temperature decay rate includes: After the inner leaf wall of the first floor is constructed to form a closed space, the indoor temperature of the closed space is increased to calculate the actual temperature decay rate of the closed area surrounded by the inner leaf wall of the first floor; The comprehensive U value of the inner leaf wall, the insulation layer and the tie bars is calculated based on the preset thickness of the insulation layer and the actual setting parameters, and the estimated temperature decay rate is calculated based on the actual temperature decay rate.

3. The construction method of a building wall with thermal insulation performance according to claim 2, characterized in that: Comparing the estimated temperature decay rate with the standard decay ranges of the primary insulation area and the secondary insulation area respectively; When the estimated temperature decay rate is lower than the standard decay range, the wall's insulation capacity is judged to meet the insulation requirements of the primary and secondary insulation areas, and the preset thickness and actual setting parameters are determined to be reasonable; When the estimated temperature decay rate exceeds the standard decay range, it is determined that the wall's insulation capacity does not meet the insulation requirements of the primary and secondary insulation areas, and the determined preset thickness and actual setting parameters are unreasonable; When the estimated temperature decay rate is within the standard decay range, it is necessary to perform a secondary analysis to determine whether the wall is good or not.

4. The construction method of a building wall with thermal insulation performance according to claim 3, characterized in that: The process of quantifying the effect of tie bars set according to actual setting parameters on the insulation performance includes: The sum of the actual number of insulation areas constituting the enclosed space is determined, and the total amount of heat conducted per unit time by the tie bars of the sum of the actual number of areas is calculated.

5. The construction method of a building wall with thermal insulation performance according to claim 4, characterized in that: The process of determining unreasonable causes includes: When the actual ratio of the total heat to the heat loss of the enclosed space is less than the critical threshold, the reason for the unreasonable judgment is that the target U value of the heat transfer coefficient does not match the environment, resulting in the preset thickness of the insulation layer not meeting the requirements; When the actual ratio of the total heat to the heat loss of the enclosed space is greater than or equal to the critical threshold, the unreasonable reason is that the tie reinforcement causes excessive heat loss.

6. The construction method of a building wall with thermal insulation performance according to claim 5, characterized in that: When the target U value does not match the environment, the preset thickness is adjusted by adjusting the target U value; When the tie bars cause excessive heat loss, the actual setting quantity is reduced by adjusting the quantity compensation coefficient, while increasing the bonding strength of the foam glue between the insulation layer and the outer leaf wall.

7. The construction method of a building wall with thermal insulation performance according to claim 6, characterized in that: The secondary analysis process includes calculating the cracking risk factor based on the theoretical deformation and the allowable deformation; If the cracking risk coefficient is less than the standard coefficient, it is judged that there is no cracking risk on the wall; if the cracking risk coefficient is greater than or equal to the standard coefficient, it is judged that there is a cracking risk on the wall; When there is a risk of cracking in the wall, the expansion joint cutting method is determined according to the floor height and the single wall height.

8. The method for constructing a building wall with thermal insulation performance according to claim 7, characterized in that: The process of determining the preset thickness of the corresponding insulation layer includes: Set the target U-value according to the insulation requirements of the primary insulation area and the secondary insulation area, set the heat loss coefficient according to the layout type of the regional layout of the insulation area, set the adjustment coefficient according to the floor height, and determine the preset thickness and weight of the insulation layer.

9. The method for constructing a building wall with thermal insulation performance according to claim 8, characterized in that: The process of determining the actual number of tie bars to be placed within any insulation zone involves: The comprehensive risk coefficient of any insulation area is determined based on the wind risk coefficient and the temperature difference risk coefficient combined with the weight of the insulation layer, and the initial number of tie bars in this insulation area is determined based on the comprehensive risk coefficient and the tie bar parameters.

10. The method for constructing a building wall with thermal insulation performance according to claim 9, characterized in that: The process of checking the maximum quantity includes: The initial setting quantity is rounded up to determine the rounded setting quantity within this insulation zone. When the rounded setting quantity is less than or equal to the maximum setting quantity, the actual setting quantity is the rounded setting quantity. When the rounded setting quantity is greater than the maximum setting quantity, the actual setting quantity takes the maximum setting quantity, and the preset initial setting depth of the tie bar in the inner leaf wall is adjusted to the actual setting depth.

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