External environmental force prediction system, durability information providing system, external environmental force prediction method, and external environmental force prediction program

Abstract

To predict an external environmental force that indicates an external force of deterioration caused by composite action of environmental factors that construction materials receive.SOLUTION: An external environmental force prediction system 1 includes: a construction material information acquisition unit 11 which acquires location information related to a target construction material, direction information indicating a direction in which an irradiation surface faces, construction material specifying information, and wall structure specifying information; a solar beam intensity calculation unit 12 which calculates, based on the location information, a period for calculation and solar beam intensity in a place where the construction material is placed; a specific-direction solar beam intensity calculation unit 13 which calculates specific-direction solar beam intensity, based on the direction information and the solar beam intensity; a thermal influence prediction information calculation unit 14 which calculates thermal influence prediction information of a solar beam in an irradiation direction in the place where the target construction material is placed, on the basis of characteristic information of the target construction material, wall structure information regarding a wall structure, and the specific-direction solar beam intensity; and an external environmental force calculation unit 15 which calculates an external environmental force with respect to the target construction material, based on the specific-direction solar beam intensity and the thermal influence prediction information.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an environmental force prediction system, a durability information providing system, an environmental force prediction method, and an environmental force prediction program. [Background technology]

[0002] Organic building materials used in buildings, such as plastics, resins, and rubber (including not only those that are organic themselves, but also all those that use organic materials at least on the surface, such as WPRC (recycled wood-plastic composites), paints, waterproofing materials, and sealants) deteriorate over time in outdoor environments, so the degree of deterioration is determined by inspection, investigation, and diagnosis, and repairs and renovations are carried out based on the results of the determination. For example, Patent Document 1 discloses a predictive information provision system that predicts the effect of sunlight on exterior paint. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-97781 Summary of the Invention [Problem to be solved by the invention]

[0004] The aging and weather resistance of building materials made of plastics, resins, rubber, etc. used in buildings in outdoor environments is evaluated, for example, by outdoor exposure tests specified in the JIS standard. When considering the weather resistance of building materials when determining the specifications of a building, it is preferable to install the building materials in the same location and direction as they will be used in the building and evaluate their deterioration state. However, since a long exposure period is required to obtain information on the deterioration state of building materials in advance, it has been common to evaluate them by the above-mentioned outdoor exposure tests. However, since the exposure environment is different between the building in which the building materials are used and the above-mentioned outdoor exposure tests, there is a difference in the rate at which material deterioration progresses, making it difficult to estimate the detailed lifespan of the materials. In addition, since the deterioration of actual building materials occurs due to a complex relationship between environmental factors depending on the location, it is difficult to determine the period until the lifespan of a building material in a building in which it is actually used, based only on the environmental factors of the location where the outdoor exposure test is performed. Note that the environmental factors are the environmental conditions of the area to which the building materials are exposed, and include temperature, humidity, amount of ultraviolet rays, and amount of rainfall.

[0005] Therefore, the present invention aims to predict and provide external environmental forces, which are indicators of the external forces of deterioration caused by the combined action of environmental factors that a building material is subjected to, depending on the location where the building material to be evaluated is located or the location where its installation is planned. [Means for solving the problem]

[0006] In order to solve the above problem, an environmental external force prediction system according to one aspect of the present disclosure is an environmental external force prediction system that predicts an environmental external force, which is an external force of deterioration caused by an environmental factor, in a building material installed in a building, and includes a building material information acquisition unit that acquires location information indicating a location where a target building material, which is a building material subject to prediction, is installed, directional information indicating an irradiation direction in which an irradiated surface of the target building material that is irradiated with sunlight faces, building material identification information that identifies the target building material, and wall structure identification information that identifies a wall structure in which the target building material is installed; a sunlight ray intensity calculation unit that calculates sunlight ray intensity for a calculation target period and for a location where the target building material is installed based on the location information and by referring to sunlight ray intensity information, the sunlight ray intensity information including sunlight ray intensity for each date, time, and location; and a specific direction thickness that is sunlight ray intensity in the irradiation direction indicated by the directional information at the location where the target building material was installed, based on the directional information and the sunlight ray intensity. the building material characteristic information is characteristic information including at least one of the material of each building material, and the density, specific heat, reflectance, and thermal conductivity of each material, and the wall structure information is information regarding the wall structure that constitutes the base of the building material, and the wall structure information is information regarding the wall structure that constitutes the base of the building material, and the heat effect prediction information calculation unit includes an external environmental force calculation unit that calculates external environmental forces on the target building material based on the external environmental force calculation unit and the external environmental force calculation unit; and an output unit that outputs the calculated external environmental force.

[0007] An external environmental force prediction method according to one aspect of the present disclosure is an external environmental force prediction method executed by an external environmental force prediction system having at least one processor and predicting an external environmental force, which is an external force for deterioration caused by an environmental factor, in a building material installed in a building, the method including a building material information acquisition step of acquiring location information indicating a location where a target building material, which is a building material to be predicted, is installed, directional information indicating an irradiation direction in which an irradiated surface of the target building material that is irradiated with sunlight faces, building material identification information that identifies the target building material, and wall structure identification information that identifies a wall structure in which the target building material is installed; a solar ray intensity calculation step of calculating solar ray intensity for a calculation target period and for a location where the target building material is installed based on the location information and with reference to sunlight ray intensity information, the sunlight ray intensity information including sunlight ray intensity for each date, time, and location; and a solar ray intensity calculation step of calculating a solar ray intensity in an irradiation direction indicated by the directional information at the location where the target building material is installed, based on the directional information and the sunlight ray intensity. the building material characteristic information is characteristic information including at least one of the material of each building material, and the density, specific heat, reflectance, and thermal conductivity of each material, and the wall structure information is information regarding the wall structure constituting the base of the building material, and the wall structure information is information regarding the wall structure constituting the base of the building material, and the material of the wall structure, and the density, specific heat, thermal conductivity, and the like; an environmental external force calculation step for calculating an environmental external force on the target building material based on the specific direction sunlight intensity and the thermal effect prediction information; and an output step for outputting the calculated environmental external force.

[0008] An environmental external force prediction program according to one aspect of the present disclosure is an environmental external force prediction program for causing a computer to function as an environmental external force prediction system for predicting environmental external forces that are external forces for deterioration caused by environmental factors in building materials installed in a building, the program including a building material information acquisition step for acquiring location information indicating a location where a target building material, which is a building material to be predicted, is installed, directional information indicating an irradiation direction in which an irradiated surface of the target building material that is irradiated with sunlight faces, building material identification information for identifying the target building material, and wall structure identification information for identifying a wall structure in which the target building material is installed; a sunlight ray intensity calculation step for calculating sunlight ray intensity for a calculation target period and for a location where the target building material is installed based on the location information and with reference to sunlight ray intensity information, the sunlight ray intensity information including sunlight ray intensity for each date, time, and location; and a specific direction information that is sunlight ray intensity in the irradiation direction indicated by the directional information at the location where the target building material is installed, based on the directional information and the sunlight ray intensity. The method causes a computer to execute a specific direction solar ray intensity calculation step of calculating solar ray intensity, a thermal effect prediction information calculation step of calculating thermal effect prediction information of solar ray in the irradiation direction at a place where the target building material is installed based on characteristic information on the target building material obtained by referencing building material characteristic information based on building material specific information, wall structure information on the wall structure in which the target building material is installed obtained by referencing wall structure information based on wall structure specific information, and the specific direction solar ray intensity, where the building material characteristic information is characteristic information including at least one of the material of each building material, and the density, specific heat, reflectance, and thermal conductivity of each material, and the wall structure information is information on the wall structure that constitutes the base of the building material, and includes at least one of the material of the wall structure, and the density, specific heat, thermal conductivity, etc. of each material, an environmental external force calculation step of calculating an environmental external force on the target building material based on the specific direction solar ray intensity and the thermal effect prediction information, and an output step of outputting the calculated environmental external force.

[0009] According to the above aspect, the sunlight intensity at the location and date and time when the target building material is installed is acquired, and a specific direction sunlight intensity is calculated based on the irradiation direction in which the irradiated surface of the target building material faces, so that environmental factors based on sunlight are appropriately evaluated. Also, the thermal impact prediction information is calculated by further taking into account the characteristic information of the target building material and the wall structure information on the wall structure in which the target building material is installed, so that multiple environmental factors related to heat are appropriately evaluated. And, because the external environmental forces are calculated based on the specific direction sunlight intensity and the thermal impact prediction information, it is possible to obtain information in which the external forces of deterioration acting on the target building material are appropriately evaluated.

[0010] In another aspect of the environmental external force prediction system, the sunlight ray intensity calculation unit calculates the global solar radiation as sunlight ray intensity based on at least the solar altitude, or obtains a pre-calculated global solar radiation as sunlight ray intensity, and the global solar radiation may include the amount of sunlight due to direct light and scattered light reaching the ground.

[0011] According to the above aspect, since the amount of global solar radiation is acquired or calculated as solar radiation intensity information, information regarding solar radiation, which is one of the main environmental factors, is appropriately taken into consideration.

[0012] In another aspect of the environmental external force prediction system, the specific direction sunlight ray intensity calculation unit may calculate the specific direction sunlight ray intensity by accumulating the light ray intensities of direct light and scattered light from each direction onto the irradiated surface based on the global solar radiation acquired or calculated as the sunlight ray intensity.

[0013] According to the above aspect, the specific direction sunlight intensity calculated by accumulating the light intensity of direct light and scattered light received in the irradiation direction in which the irradiated surface faces is used to calculate the external environmental force, so that the intensity of the sunlight received by the irradiated surface of the target building material is appropriately reflected in the external environmental force.

[0014] In the environmental external force prediction system according to another aspect, the thermal effect prediction information calculation unit may calculate an average surface temperature of the irradiated surface for each hour as the thermal effect prediction information.

[0015] According to the above aspect, the average surface temperature of the irradiated surface, which has a significant impact on the deterioration of the target building material, is used in calculating the external environmental force, so that temperature-related factors, which are one of the environmental factors, are appropriately reflected in the calculation of the external environmental force.

[0016] In the environmental force prediction system according to another aspect, the environmental force calculation unit calculates, by equation (1), Environmental external force=C×Σ[S τ exp(-Ea / RT)]...Equation (1) (Constant C: Deterioration characteristic value due to solar radiation and temperature (4.68 x 10 4 ) Variable S: Solar radiation intensity in a specific direction for a given unit period Constant τ: Deterioration characteristic value due to solar radiation (0.276) Constant Ea: Activation energy of degradation due to solar radiation and temperature (35.6KJ / mol) Constant R: Gas constant (8.314 x 10 -3 KJ / mol / K) Variable T: Average surface temperature of the irradiated surface during a specified unit period included in the thermal impact prediction information) External environmental forces may also be calculated.

[0017] According to the above aspect, by accumulating the environmental factors of global solar radiation and average surface temperature of the irradiated surface on the deterioration of the target building material, it is possible to obtain an appropriate index value of the external forces of deterioration acting on the target building material over the period set as the calculation target.

[0018] A durability information providing system according to one aspect of the present disclosure includes a unit period environmental external force acquisition unit that acquires a unit period environmental external force, which is an environmental external force in a given unit period output by the environmental external force prediction system described in any one of claims 1 to 5, for a test specimen made of a building material installed at an arbitrary exposure location, and a total environmental external force calculation unit that calculates and outputs a total environmental external force by multiplying the unit period environmental external force by an aging deterioration period obtained in advance as the period from when the test specimen is installed at the exposure location to when it is no longer able to satisfy a specified performance.

[0019] According to the above aspect, by multiplying the unit period environmental force by the aging deterioration period to calculate the total environmental force, it is possible to obtain information on the environmental forces that the building material may be subjected to until the end of its life as attribute information of the building material.

[0020] The durability information providing system according to another aspect may further include a life information calculation unit that acquires the environmental external forces for a unit period at an evaluation location, which is the location to be evaluated where the building material calculated and output by the environmental external force prediction system is installed, and divides the total environmental external force calculated based on a test specimen made of the building material by the environmental external force for the unit period at the evaluation location, thereby calculating and outputting life information expressed by the unit period when the building material is installed at the evaluation location.

[0021] According to the above aspect, by dividing the total external environmental force on the building material by the external environmental force in a unit period at the evaluation location, it is possible to obtain highly accurate lifespan information of the building material at the evaluation location. Effect of the Invention

[0022] According to one aspect of the present disclosure, it is possible to predict and provide external environmental forces, which are indicators of external forces of deterioration caused by the combined action of environmental factors that a building material is subjected to, depending on the location where the building material to be evaluated is located or the location where its installation is planned. [Brief description of the drawings]

[0023] [Figure 1] FIG. 2 is a block diagram showing a functional configuration of the environmental force prediction system according to the present embodiment. [Diagram 2] FIG. 2 is a diagram illustrating a hardware configuration of the environmental external force prediction device. [Diagram 3] FIG. 3 is a diagram showing a schematic of directional information indicating the irradiation direction in which the irradiation surface faces, where FIG. 3(a) is a diagram showing the azimuth angle, which is an element of the directional information, and FIG. 3(b) is a diagram showing the elevation angle, which is also an element of the directional information. [Figure 4] 4 is a diagram showing an example of the configuration of sunlight beam intensity information stored in a sunlight beam intensity information storage unit; FIG. [Diagram 5] 11 is a diagram for explaining a calculation process of sunlight ray intensity in a specific direction. FIG. [Figure 6] 10 is a diagram showing an example of the configuration of building material characteristic information stored in a building material characteristic information storage unit. FIG. [Figure 7] 10 is a diagram showing an example of the configuration of wall structure information stored in a wall structure information storage unit; FIG. [Figure 8] FIG. 13 is a diagram showing an example of a formula for calculating the average surface temperature of a building material by time. [Figure 9] FIG. 2 is a diagram illustrating a functional configuration of a durability information providing system and a durability information providing device. [Figure 10] 1 is a flowchart showing the processing steps of an environmental force prediction method implemented in an environmental force prediction system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements are designated by the same reference numerals, and duplicated description will be omitted.

[0025] Fig. 1 is a block diagram showing the functional configuration of an environmental force prediction system according to this embodiment. The environmental force prediction system 1 of this embodiment is configured, as an example, by an environmental force prediction device 10. As shown in Fig. 1, the environmental force prediction device 10 is configured by a computer equipped with a processor 101. The environmental force prediction device 10 of this embodiment functionally comprises a building material information acquisition unit 11, a solar ray intensity calculation unit 12, a specific direction solar ray intensity calculation unit 13, a thermal impact prediction information calculation unit 14, an environmental force calculation unit 15, and an output unit 16. These functional units will be described in detail later.

[0026] Furthermore, each of the functional units 11 to 16 of the environmental external force prediction device 10 is configured to be able to access storage means such as a sunlight beam intensity information storage unit 21, a building material characteristic information storage unit 22, and a wall structure information storage unit 23. The sunlight beam intensity information storage unit 21, the building material characteristic information storage unit 22, and the wall structure information storage unit 23 may be provided in the environmental external force prediction device 10 as shown in Fig. 1, or may be configured as external storage means provided so as to be accessible from the environmental external force prediction device 10.

[0027] Fig. 2 is a hardware configuration diagram of the environmental force prediction device 10. As shown in Fig. 2, the environmental force prediction device 10 is physically configured as a computer system including a processor 101, a main storage device 102 configured with memories such as RAM and ROM, an auxiliary storage device 103 configured with a hard disk or the like, a communication control device 104, etc. The environmental force prediction device 10 may further include an input device 105 such as a keyboard, touch panel, mouse, etc., which are input devices, and an output device 106 such as a display.

[0028] The processor 101 is a computing device that executes an operating system and an application program. Examples of processors include a central processing unit (CPU) and a graphics processing unit (GPU), but the type of the processor 101 is not limited to these. For example, the processor 101 may be configured with a dedicated circuit. The dedicated circuit may be a programmable circuit such as a field-programmable gate array (FPGA), or may be another type of circuit.

[0029] The main memory device 102 is a device that stores programs for implementing the environmental force prediction device 10, calculation results output from the processor 101, and the like. The main memory device 102 is configured, for example, with at least one of a ROM (Read Only Memory) and a RAM (Random Access Memory).

[0030] The auxiliary storage device 103 is generally a device capable of storing a larger amount of data than the main storage device 102. The auxiliary storage device 103 is configured with a non-volatile storage medium such as a hard disk or a flash memory. The auxiliary storage device 103 stores a program P1 (environmental force prediction program) for causing a computer to function as the environmental force prediction device 10, and various data. In addition, when the solar ray intensity information storage unit 21, the building material characteristic information storage unit 22, and the wall structure information storage unit 23 are included in the environmental force prediction device 10, the solar ray intensity information storage unit 21, the building material characteristic information storage unit 22, and the wall structure information storage unit 23 may be configured in any of the main storage device 102, the auxiliary storage device 103, or other storage elements.

[0031] The communication control device 104 is a device that executes data communication with other computers and devices via a communication network. The communication control device 104 is configured by, for example, a network card or a wireless communication module.

[0032] Each functional unit shown in FIG. 1 is realized by loading a program P1 onto hardware such as the processor 101 and the main storage device 102 shown in FIG. 2 and having the processor 101 execute the program P1. The program P1 includes code for realizing each functional element of the environmental force prediction device 10. The processor 101 operates the communication control device 104 and the like according to the program P1, and executes reading and writing of data in the main storage device 102 and the auxiliary storage device 103. Data and databases required for processing are stored in the main storage device 102 and the auxiliary storage device 103. Note that, although each functional unit 11 to 16 is configured in the environmental force prediction device 10 in this embodiment, they may be configured in a distributed manner in a plurality of computers.

[0033] The program P1 may be provided in a form fixedly recorded on a tangible recording medium such as a CD-ROM, a DVD-ROM, a semiconductor memory, etc. Alternatively, the program P1 may be provided via a communication network as a data signal superimposed on a carrier wave.

[0034] 1 again, the functional units of the external environmental force prediction device 10 will be described. The building material information acquisition unit 11 acquires location information, direction information, building material identification information, and wall structure identification information related to a target building material that is a target building material for predicting an external environmental force.

[0035] The location information is information indicating the location where the target building material is installed, and may be, for example, latitude and longitude. The location information may also be replaced by information indicating the location of the building.

[0036] The directional information is information indicating the irradiation direction of the irradiation surface, which is the surface of the target building material that is irradiated by the sun's rays. FIG. 3 is a diagram showing the directional information in a schematic manner. As shown in FIG. 3(a), the directional information includes the azimuth angle in the horizontal direction of the irradiation direction rs in which the irradiation surface sf faces, and as shown in FIG. 3(b), the elevation angle in the vertical direction of the irradiation direction rs in which the irradiation surface sf faces. In addition, when the irradiation surface is a curved surface, it is possible to indicate the directional information by subdividing the irradiation surface.

[0037] The building material identification information is information that identifies the target building material, and may specifically be information on the product specifications. The building material identification information may include information that identifies the product and the construction thickness, and may also include a material type that identifies the material (e.g., WPRC, paint, waterproofing material, sealant, etc.).

[0038] The wall structure specification information is information that specifies the wall structure on which the target building material is installed, and more specifically, is information that specifies the structure of the base on which the target building material is installed. More specifically, the wall structure specific information is information that specifies the cross-sectional configuration of the wall (base) structure, and may include information such as the types and thicknesses of multiple materials that, in order, make up the cross-section of the wall structure, such as (150mm concrete + 30mm insulation + 25mm gypsum board).

[0039] The building material information acquisition unit 11 may acquire location information, direction information, building material specific information and wall structure specific information based on information input via an input means, or may acquire or receive pre-stored information that is an attribute of the target building material.

[0040] The solar ray intensity calculation unit 12 calculates the solar ray intensity for the calculation target period and the location where the target building material is installed based on the location information and by referring to the solar ray intensity information. The solar ray intensity calculation unit 12 calculates the global solar radiation as the solar ray intensity based on at least the solar altitude, or obtains a pre-calculated global solar radiation as the solar ray intensity. The global solar radiation includes direct light and scattered light that reach the ground.

[0041] Specifically, the solar ray intensity calculation unit 12 calculates the solar ray intensity by referring to the solar ray intensity information storage unit 21. FIG. 4 is a diagram showing an example of the configuration of the solar ray intensity stored in the solar ray intensity information storage unit 21. The solar ray intensity information storage unit 21 is a storage means that stores solar ray intensity information throughout the year for each location and date and time (the smallest unit is one hour). The solar ray intensity information is the total solar radiation amount for each hour, and is information such as the amount of electromagnetic waves such as the amount of ultraviolet rays, infrared rays, and visible light reaching the ground, and the amount of solar radiation. These pieces of information are calculated based on a known radiative transfer equation from the position of the solar altitude. The calculation of the total solar radiation amount using the radiative transfer equation is possible by a known method disclosed in "Tomoyuki Okumura, Sky Light Source Simulation, Unisys Technology Review Vol. 145, SEP.2020" and the like.

[0042] In addition, calculation of the global solar radiation amount using the radiative transfer equation can be performed by a known method disclosed in the patent application "Solar Radiation Intensity Calculation Apparatus and Solar Radiation Intensity Calculation Method (Patent No. 6817095)" by the inventor of the present invention. Furthermore, calculation of the ultraviolet ray intensity, which may be a part of the calculation of the global solar radiation amount, can be performed by a known method disclosed in the patent application "Ultraviolet ray information provision system and ultraviolet ray information provision program (Patent No. 7153473)" by the inventor of the present invention.

[0043] Sunlight is electromagnetic energy generated by the nuclear fusion of hydrogen in the center of the sun. After reaching the top of the Earth's atmosphere, the electromagnetic energy emitted from the sun reaches the ground while being scattered and absorbed by fine particles in the atmosphere. Therefore, the sunlight and its energy that reach the location where the target building material is installed include scattered light from various directions in addition to direct light from the direction of the sun.

[0044] The solar radiation intensity information is the spectral radiance (unit: W m) of direct and diffuse light for each location and wavelength. -2 ·sr -1 nm -1 Specifically, the sunlight intensity information includes, as the sunlight intensity of direct light, the spectral radiance for each zenith angle and azimuth angle in the sun direction, and, as the sunlight intensity of scattered light, the spectral radiance for each zenith angle and azimuth angle corresponding to the direction of scattered light.

[0045] The sunlight intensity calculation unit 12 acquires the sunlight intensity over the calculation target period at the location where the target building material is installed by referring to the sunlight intensity information storage unit 21. Note that instead of storing the sunlight intensity for each location and date and time in the sunlight intensity information storage unit 21 in advance, the sunlight intensity calculation unit 12 may calculate the global solar radiation at the location where the target building material is installed using a radiation transfer equation or the like.

[0046] The specific direction solar ray intensity calculation unit 13 calculates the specific direction solar ray intensity at the location where the target building material is installed based on the direction information and the solar ray intensity. The specific direction solar ray intensity is the solar ray intensity in the irradiation direction indicated by the direction information. That is, while the global solar radiation is the global solar ray energy per unit area received on a horizontal plane, the specific direction solar ray intensity corresponds to the solar ray energy on an irradiation surface that may be different from the horizontal plane.

[0047] 5 is a diagram showing a typical calculation process of the specific direction sunlight ray intensity. Specifically, the specific direction sunlight ray intensity calculation unit 13 calculates the specific direction sunlight ray intensity by integrating the light intensities of the direct light and the scattered light from each direction on the irradiation surface sf based on the global solar radiation acquired or calculated as the sunlight ray intensity by the sunlight ray intensity calculation unit 12.

[0048] As shown in Fig. 5, among the sunlight (sla, sla, slb) heading in each direction including direct light and scattered light reaching the ground, the sunlight sla is irradiated onto the irradiation surface sf, and the sunlight slb is not irradiated onto the irradiation surface sf. The specific direction sunlight ray intensity calculation unit 13 calculates the specific direction sunlight ray intensity by integrating the sunlight ray intensity corresponding to the sunlight sla in the schematic diagram of Fig. 5, based on the sunlight ray intensity (global solar radiation) acquired or calculated by the sunlight ray intensity calculation unit 12.

[0049] The thermal effect prediction information calculation unit 14 calculates thermal effect prediction information of sunlight in the irradiation direction at the location where the target building material is installed, based on the characteristic information on the target building material, the wall structure information on the wall structure where the target building material is installed, and the specific direction sunlight intensity. Specifically, the thermal effect prediction information calculation unit 14 calculates the average surface temperature of the irradiated surface for each hour as the thermal effect prediction information.

[0050] The thermal impact prediction information calculation unit 14 acquires the characteristic information on the target building material by referring to the building material characteristic information based on the building material identification information. The building material characteristic information is stored in the building material characteristic information storage unit 22, for example.

[0051] Fig. 6 is a diagram showing an example of the configuration of building material characteristic information stored in the building material characteristic information storage unit 22. As shown in Fig. 6, the building material characteristic information storage unit 22 stores characteristic information such as density, specific heat, reflectance, and thermal conductivity in association with each type of material, such as WPRC, paint, waterproofing material, and sealant. The thermal impact prediction information calculation unit 14 acquires, from the building material characteristic information storage unit 22, characteristic information associated with the type of target building material identified by the building material identification information.

[0052] The heat influence prediction information calculation unit 14 acquires wall structure information on the wall structure in which the target building material is provided by referring to the wall structure information based on the wall structure identification information. The wall structure information is stored in, for example, the wall structure information storage unit 23.

[0053] Fig. 7 is a diagram showing an example of the configuration of wall structure information stored in the wall structure information storage unit 23. As shown in Fig. 7, the wall structure information storage unit 23 stores wall structure information such as density, specific heat, reflectance, and thermal conductivity in association with each type of material of the wall structure, such as concrete, ALC, ceramic siding, steel, and aluminum. The thermal effect prediction information calculation unit 14 acquires, from the wall structure information storage unit 23, the wall structure information associated with the material of the wall structure specified by the wall structure specification information.

[0054] The heat impact prediction information calculation unit 14 calculates the average surface temperature of the target building material by time on the irradiated surface based on the characteristic information of the target building material, the wall structure information, and the solar ray intensity in a specific direction. Fig. 8 is a diagram showing an example of a calculation formula for the average surface temperature of a building material by time. The calculation formula shown in Fig. 8 is a known one cited from Patent Document 1 applied for by the inventor of the present invention, and is shown as an example of temperature prediction for exterior wall paint, but it can also be applied to target building materials other than exterior wall paint.

[0055] As shown in FIG. 8, the amount of heat that an object surface (the surface of the target building material) receives from the outside world is expressed by the addition of convection heat transfer, solar radiation, atmospheric radiation, and latent heat, and the subtraction of object infrared radiation. The thermal effect prediction information calculation unit 14 calculates θ si p The surface temperature of the target building material is obtained by solving the equation by substituting other variables and constants with x = 1 / x = 1 / x = 1 / x. The variables in the equation are acquired in advance by the functional units 12-14, etc., and the constants in the equation are set in advance. The calculation unit of the surface temperature calculated by this calculation equation can be set arbitrarily, but by setting it to hourly units, for example, the thermal impact prediction information calculation unit 14 can calculate the average surface temperature of the target building material for each hour.

[0056] The environmental external force calculation unit 15 calculates the environmental external force on the target building material based on the specific direction sunlight intensity and the heat impact prediction information. Specifically, the environmental external force calculation unit 15 calculates the environmental external force for the set period by the following formula (1). Environmental external force=C×Σ[S τ exp(-Ea / RT)]...Equation (1) Constant C: Deterioration characteristic value due to solar radiation and temperature (4.68 x 10 4 ) Variable S: Solar radiation intensity in a specific direction (global solar radiation on the irradiated surface) (e.g., on a monthly basis) Constant τ: Deterioration characteristic value due to solar radiation (0.276) Constant Ea: Activation energy of degradation due to solar radiation and temperature (35.6KJ / mol) Constant R: Gas constant (8.314 x 10 -3 KJ / mol / K) Variable T: Average surface temperature of the irradiated surface (e.g., on a daily basis) In addition, the calculation of environmental external forces using formula (1) can be made using known methods disclosed in, for example, "Research on weather resistance evaluation of sealants using external deteriorating forces as an index, Abstracts of Academic Lectures at the Architectural Institute of Japan Annual Meeting (Tokai), September 2021."

[0057] The environmental external force calculation unit 15 assigns the specific direction solar ray intensity (global solar radiation on the irradiated surface) calculated by the specific direction solar ray intensity calculation unit 13 to the variable S, assigns the average surface temperature on the irradiated surface calculated by the thermal effect prediction information calculation unit 14 to the variable T, and calculates the environmental external force for a set predetermined period using preset constants C, τ, Ea, and T. The environmental external force calculation unit 15 matches the unit periods of the variables S and T to the period targeted for the calculation of the environmental external force.

[0058] The output unit 16 outputs the calculated external environmental force. The manner of output is not limited, and may be, for example, displayed on a predetermined display means, stored in a predetermined storage means, or transmitted to a predetermined destination.

[0059] Next, a system that provides durability information of building materials using environmental external forces predicted by the environmental external force prediction system 1 will be described. FIG. 9 is a diagram showing the functional configuration of the durability information providing system and the durability information providing device. As shown in FIG. 9, the durability information providing system 1A is, as an example, configured by a durability information providing device 10A. The durability information providing device 10A has the hardware configuration shown in FIG. 2, similar to the environmental external force prediction device 10. The durability information providing device 10A includes the functions of the environmental external force prediction system 1 shown in FIG. 1, and further functionally includes a unit period environmental external force acquisition unit 17, a total environmental external force calculation unit 18, and a life information calculation unit 19.

[0060] The unit period environmental external force acquisition unit 17 acquires the unit period environmental external force, which is the environmental external force for a given unit period predicted and output by the environmental external force prediction system 1, for a test specimen made of a building material installed at an arbitrary exposure location.

[0061] 1 has been explained assuming that it calculates external environmental forces in the environment of the location of an arbitrary building, the part where building materials are applied, and the environment of the construction surface such as the direction and angle from the irradiation direction of sunlight, but it can also calculate the external environmental forces that a test specimen in an arbitrary exposure location (test location) receives in the exposure location and the direction of the irradiation surface. The unit period external environmental force acquisition unit 17 acquires the annual external environmental forces of the test specimen in the exposure location calculated by the external environmental force prediction system 1 for a calculation target period of, for example, one year.

[0062] The total external environmental force calculation unit 18 calculates and outputs the total external environmental force by multiplying the external environmental force by the aging deterioration period, which is obtained in advance as the period from when the test specimen is installed at the exposure location until it is no longer able to satisfy the specified performance, by the unit period external environmental force. The aging deterioration period is the period until the building material related to the test specimen is no longer able to satisfy its performance and reaches the end of its life, and information is obtained in advance by performing an exposure test. The performance of the building material here may be the aesthetics and / or function of the building material. The aesthetics of the building material can be based on, for example, gloss retention, color difference, chalkiness, etc., and the function of the building material can be based on indexes such as mechanical strength and elongation. This makes it possible to calculate the total amount of external environmental force that the test specimen received at the exposure location until it reaches the end of its life as a building material, and the total external environmental force can be obtained as attribute information of the building material that constitutes the test specimen.

[0063] The life information calculation unit 19 acquires the external environmental forces for a unit period at the evaluation location, which is the location of the evaluation target where the building material, the durability of which is to be evaluated, is installed, as calculated and output by the external environmental force prediction system 1, for the building material. That is, the external environmental forces for a unit period (e.g., a year) at the construction location and orientation where the building material to be evaluated is actually used are acquired. Then, the life information calculation unit 19 divides the total external environmental force calculated based on the test specimen made of the building material by the external environmental force for the unit period at the evaluation location, thereby calculating and outputting life information expressed by the unit period when the building material is installed at the evaluation location. This makes it possible to obtain highly accurate life information of the building material at the evaluation location.

[0064] Next, the operation of the environmental force prediction system 1 of this embodiment will be described with reference to Fig. 10. Fig. 10 is a flowchart showing the processing content of the environmental force prediction method performed in the environmental force prediction system 1.

[0065] In step S1, the building material information acquisition unit 11 acquires location information, direction information, building material identification information, and wall structure identification information related to a target building material that is a target building material for predicting external environmental forces.

[0066] In step S2, the sunlight intensity calculation unit 12 calculates the sunlight intensity for the calculation period and the location where the target building material is installed based on the location information and by referring to the sunlight intensity information.

[0067] In step S3, the specific direction sunlight intensity calculation unit 13 calculates the specific direction sunlight intensity at the location where the target building material is installed, based on the direction information and the sunlight intensity.

[0068] In step S4, the thermal impact prediction information calculation unit 14 calculates thermal impact prediction information of sunlight in the irradiation direction at the location where the target building material is installed based on characteristic information on the target building material, wall structure information on the wall structure in which the target building material is installed, and sunlight intensity in a specific direction.

[0069] In step S5, the environmental external force calculation unit 15 calculates the environmental external force on the target building material based on the specific direction solar ray intensity and the heat effect prediction information. In step S6, the output unit 16 outputs the calculated environmental external force.

[0070] Next, a method for acquiring various useful information related to building materials using the environmental external force prediction system 1 will be described.

[0071] As described above, the thermal effect prediction information calculation unit 14 calculates the thermal effect prediction information of sunlight in a specific direction at the location where the organic target building material is installed. More specifically, the calculation of this thermal effect prediction information of sunlight in a specific direction is calculated as the average surface temperature (hourly) of the irradiated surface where the organic building material is irradiated with sunlight. This calculation result can be converted into the average surface temperature, maximum surface temperature, and minimum surface temperature of the irradiated surface for a period in days.

[0072] Then, information such as the temperature difference between the maximum surface temperature and the minimum surface temperature, the linear expansion coefficient of the target building material, and the design length of the target building material are calculated using the known formula shown below (the temperature movement formula disclosed in the "Architectural Sealant Handbook 2017, Japan Sealant Industry Association"). δt = α L ΔT δt: Thermal expansion and contraction (mm) α: Coefficient of linear expansion of building materials ( / ℃) L: Design length of building material (mm) ΔT: Temperature difference on the surface of the building material (℃) By substituting this, it is possible to calculate the "magnitude of thermal expansion and contraction" (e.g., |6 mm|) in a specific direction at the location where the organic building material is installed.

[0073] In addition, by substituting the [maximum surface temperature of the irradiated surface - average surface temperature of the irradiated surface] and the [minimum surface temperature of the irradiated surface - average surface temperature of the irradiated surface], as well as information such as the linear expansion coefficient of the building material and the length of the building material into a known formula, it is possible to calculate the [magnitude of thermal expansion] in a specific direction at the location where the organic building material is installed (e.g., expansion +3 mm, contraction -3 mm, etc.).

[0074] Furthermore, it is possible to calculate the temperature difference by taking the average surface temperature of the irradiated surface as the average surface temperature for any period (season). For example, if the building material was installed in winter, the average surface temperature during the winter period is applied. (Example: expansion +2 mm, contraction -4 mm, etc.)

[0075] By calculating the "magnitude of thermal expansion" using the above formula, it becomes possible to consider and propose more detailed fittings, such as setting the joint width in areas where the building materials are used, taking thermal expansion into account.

[0076] Furthermore, by obtaining more detailed "magnitude of thermal expansion and contraction" of expansion and contraction, it is possible, for example, to consider the durability of adhesion to the substrate due to fluctuations in joint width based on the fluctuations due to thermal expansion of the sealant filled in the joint width, and it is also possible to consider the crack-following ability of the building material directly above the crack due to repeated expansion and contraction based on the range of fluctuations experienced by the waterproof coating film directly above the crack.

[0077] Next, a method for acquiring various useful information on building materials using the durability information providing system 1A will be described.

[0078] For example, in the case of calculating durability information (estimated durability years Y) of a sealing material, the calculation results by the thermal impact prediction information calculation unit 14 are used to calculate the surface temperature of the irradiated surface of the building material that is irradiated with sunlight, and the daily average surface temperature, maximum surface temperature, and minimum surface temperature in the construction location and orientation where the building material is actually used are calculated (the calculations in hourly units are converted to daily units).

[0079] In addition, by substituting information such as the [maximum surface temperature of the irradiated surface - average surface temperature of the irradiated surface] and [minimum surface temperature of the irradiated surface - average surface temperature of the irradiated surface], the linear expansion coefficient of the building material, and the length of the building material into the formula for calculating the magnitude of thermal expansion / contraction δt described above, the [magnitude of thermal expansion / contraction] in a specific direction at the location where the organic building material is installed (e.g., expansion +3 mm, contraction -3 mm, etc.) can be calculated.

[0080] Furthermore, the cumulative amount (fluctuation range (c) x number of fluctuations) until fracture occurs (i.e., the end of the life) for each fluctuation range due to thermal expansion / contraction in the test specimen is obtained in advance. Here, the calculated [magnitude of thermal expansion / contraction] is applied to the fluctuation range (c). In calculating this cumulative amount, information on the number of fluctuations is obtained in advance through testing. This cumulative amount for each fluctuation range can be considered to be a constant value that is not dependent on location or orientation. This information is then applied to the Miner's law (linear damage law), which is a model in which as the number of fluctuations for each fluctuation range increases, the amount of deterioration accumulates, and the life of the specimen is reached when a certain threshold is exceeded.

[0081] For each variation range in the above test specimen, the number of fractures is plotted on the horizontal axis and the variation range on the vertical axis to create a graph, and an SN diagram of the variation range and number of fractures is created (a curve showing the relationship between the stress repeatedly applied at a certain amplitude and the number of repeated loads until fracture in the fatigue failure of materials, and is widely used to evaluate fatigue life assuming that deterioration and damage accumulate and progress).The following approximate curve can be obtained from information on the variation range and number of fractures for three or more points on the SN diagram. n1 / N1+n2 / N2+···+ni / Ni=Σni / Ni=1 n: number of times the range of fluctuation occurs, N: number of times the range of fluctuation reaches its end of life The above formula is a known formula disclosed in a patent application by the applicant of the present invention ("Waterproof Coating Film Durability Evaluation Method and Durability Evaluation Apparatus" JP 2022-13241 A).

[0082] The estimated durability Y of the organic building material formed in a specific building can be calculated from the cumulative number of movements in a specific direction per year (assuming that a load of a specific movement range is applied ni times) using the formula Y=1 / (Σni / Ni). The number of times the building material moves per year or per day in the actual construction location and direction may differ depending on the environment and circumstances.

[0083] According to the environmental external force prediction system 1, the environmental external force prediction device 10, the environmental external force prediction method, and the program P1 of the present embodiment described above, the sunlight intensity at the place and date and time when the target building material is installed is acquired, and further, the specific direction sunlight intensity is calculated based on the irradiation direction in which the irradiated surface of the target building material faces, so that environmental factors based on sunlight are appropriately evaluated. In addition, the thermal impact prediction information is calculated by further taking into account the characteristic information of the target building material and the wall structure information on the wall structure in which the target building material is installed, so that multiple environmental factors related to heat are appropriately evaluated. And, since the environmental external force is calculated based on the specific direction sunlight intensity and the thermal impact prediction information, it is possible to obtain information in which the external force of deterioration acting on the target building material is appropriately evaluated.

[0084] The present invention has been described in detail above based on the embodiments. However, the present invention is not limited to the above embodiments. The present invention can be modified in various ways without departing from the spirit and scope of the present invention.

[0085] The gist of this disclosure is as follows: [1] to

[10] . [1] An environmental external force prediction system for predicting an environmental external force, which is an external force of deterioration caused by an environmental factor, in a building material installed in a building, comprising: a building material information acquisition unit that acquires location information indicating the location where a target building material, which is the building material to be predicted, is installed, direction information indicating the irradiation direction of the irradiation surface of the target building material that is irradiated with sunlight, building material identification information that identifies the target building material, and wall structure identification information that identifies the wall structure in which the target building material is installed; a sunlight intensity calculation unit that calculates the sunlight intensity for a calculation target period and a location where the target building material is installed based on the location information and by referring to sunlight intensity information, the sunlight intensity information including sunlight intensity for each date, time, and location; a specific direction sunlight intensity calculation unit that calculates a specific direction sunlight intensity, which is the sunlight intensity in the irradiation direction indicated by the directional information, at a location where the target building material is installed, based on the directional information and the sunlight intensity; a thermal effect prediction information calculation unit that calculates thermal effect prediction information of sunlight in the irradiation direction at a location where the target building material is installed based on the characteristic information on the target building material obtained by referring to building material characteristic information based on the building material identification information, the wall structure information on the wall structure in which the target building material is installed obtained by referring to the wall structure information based on the wall structure identification information, and the specific direction sunlight intensity, wherein the building material characteristic information is characteristic information including at least one of the material of each building material, and the density, specific heat, reflectance, and thermal conductivity of each material, and the wall structure information is information regarding the wall structure that constitutes the base of the building material, and includes at least one of the material of the wall structure, and the density, specific heat, thermal conductivity, etc. of each material; an environmental external force calculation unit that calculates the environmental external force on the target building material based on the specific direction solar ray intensity and the thermal impact prediction information; an output unit that outputs the calculated external environmental force; An environmental force prediction system comprising: [2] The solar ray intensity calculation unit calculates a global solar radiation amount as the solar ray intensity based on at least a solar altitude, or obtains a pre-calculated global solar radiation amount as the solar ray intensity, The global solar radiation includes solar radiation due to direct light and scattered light reaching the ground, The environmental force prediction system described in [1]. [3] the specific direction sunlight ray intensity calculation unit calculates the specific direction sunlight ray intensity by integrating the light ray intensities of direct light and scattered light from each direction onto the irradiation surface based on the global solar radiation acquired or calculated as the sunlight ray intensity; The environmental force prediction system described in [2]. [4] The thermal effect prediction information calculation unit calculates an average surface temperature of the irradiation surface for each hour as the thermal effect prediction information. The environmental force prediction system according to any one of [1] to [3]. [5] The external environmental force calculation unit calculates, by equation (1), Environmental external force=C×Σ[S τ exp(-Ea / RT)]...Equation (1) (Constant C: Deterioration characteristic value due to solar radiation and temperature (4.68 x 10 4 ) Variable S: Solar ray intensity in the specific direction in a given unit period Constant τ: Deterioration characteristic value due to solar radiation (0.276) Constant Ea: Activation energy of degradation due to solar radiation and temperature (35.6KJ / mol) Constant R: Gas constant (8.314 x 10 -3 KJ / mol / K) Variable T: average surface temperature of the irradiated surface in a predetermined unit period included in the thermal effect prediction information) The environmental force prediction system according to any one of [1] to [4], which calculates the environmental force. [6] A unit period environmental external force acquisition unit that acquires a unit period environmental external force, which is the environmental external force in a given unit period output by the environmental external force prediction system according to any one of [1 to 5], for a test specimen made of the building material provided at an arbitrary exposure location; a total environmental external force calculation unit that calculates and outputs a total environmental external force by multiplying the unit period environmental external force by an aging deterioration period that is obtained in advance as a period from when the test specimen is placed in the exposure location until when the test specimen is no longer able to satisfy a predetermined performance; A durability information providing system comprising: [7] and a life information calculation unit that acquires the environmental forces for the unit period at an evaluation location, which is a location to be evaluated where the building material is installed, calculated and output by the environmental force prediction system, and divides the total environmental force calculated based on the test specimen made of the building material by the environmental force for the unit period at the evaluation location, thereby calculating and outputting life information represented by the unit period when the building material is installed at the evaluation location. [6] A durability information providing system according to the present invention. [8] An environmental force prediction method executed by an environmental force prediction system including at least one processor, the environmental force prediction system predicting an environmental force that is an external force of deterioration caused by an environmental factor in a building material installed in a building, the environmental force prediction method comprising: a building material information acquisition step of acquiring location information indicating the location where the target building material, which is the building material to be predicted, is installed, direction information indicating the irradiation direction of the irradiation surface of the target building material that is irradiated with sunlight, building material identification information that identifies the target building material, and wall structure identification information that identifies the wall structure in which the target building material is installed; a sunlight intensity calculation step of calculating the sunlight intensity for a calculation target period and a location where the target building material is installed based on the location information and by referring to sunlight intensity information, the sunlight intensity information including sunlight intensity for each date, time and location; a specific direction sunlight intensity calculation step of calculating a specific direction sunlight intensity, which is a sunlight intensity in the irradiation direction indicated by the directional information at a location where the target building material is installed, based on the directional information and the sunlight intensity; a thermal effect prediction information calculation step for calculating thermal effect prediction information of sunlight in the irradiation direction at a location where the target building material is installed based on the characteristic information on the target building material obtained by referring to building material characteristic information based on the building material specific information, the wall structure information on the wall structure in which the target building material is installed obtained by referring to the wall structure information based on the wall structure specific information, and the specific direction sunlight intensity, wherein the building material characteristic information is characteristic information including at least one of the material of each building material, and the density, specific heat, reflectance, and thermal conductivity of each material, and the wall structure information is information regarding the wall structure constituting the base of the building material, and includes at least one of the material of the wall structure, and the density, specific heat, thermal conductivity, etc. of each material; an environmental external force calculation step of calculating the environmental external force on the target building material based on the specific direction solar ray intensity and the thermal impact prediction information; an output step of outputting the calculated external environmental force; The method for predicting external environmental forces includes the steps of: [9] An environmental force prediction program for causing a computer to function as an environmental force prediction system for predicting environmental forces that are external forces for deterioration of building materials installed in a building due to environmental factors, comprising: a building material information acquisition step of acquiring location information indicating the location where the target building material, which is the building material to be predicted, is installed, direction information indicating the irradiation direction of the irradiation surface of the target building material that is irradiated with sunlight, building material identification information that identifies the target building material, and wall structure identification information that identifies the wall structure in which the target building material is installed; a sunlight intensity calculation step of calculating the sunlight intensity for a calculation target period and a location where the target building material is installed based on the location information and by referring to sunlight intensity information, the sunlight intensity information including sunlight intensity for each date, time and location; a specific direction sunlight intensity calculation step of calculating a specific direction sunlight intensity, which is a sunlight intensity in the irradiation direction indicated by the directional information at a location where the target building material is installed, based on the directional information and the sunlight intensity; a thermal effect prediction information calculation step for calculating thermal effect prediction information of sunlight in the irradiation direction at a location where the target building material is installed based on the characteristic information on the target building material obtained by referring to building material characteristic information based on the building material specific information, the wall structure information on the wall structure in which the target building material is installed obtained by referring to the wall structure information based on the wall structure specific information, and the specific direction sunlight intensity, wherein the building material characteristic information is characteristic information including at least one of the material of each building material, and the density, specific heat, reflectance, and thermal conductivity of each material, and the wall structure information is information regarding the wall structure constituting the base of the building material, and includes at least one of the material of the wall structure, and the density, specific heat, thermal conductivity, etc. of each material; an environmental external force calculation step of calculating the environmental external force on the target building material based on the specific direction solar ray intensity and the thermal impact prediction information; an output step of outputting the calculated external environmental force; An environmental force prediction program that causes the computer to execute the above. [Explanation of symbols]

[0086] 1...environmental external force prediction system, 1A...durability information providing system, 10...environmental external force prediction device, 10A...durability information providing device, 11...building material information acquisition unit, 12...sunlight ray intensity calculation unit, 13...specific direction sunlight ray intensity calculation unit, 14...thermal impact prediction information calculation unit, 15...environmental external force calculation unit, 16...output unit, 17...unit period environmental external force acquisition unit, 18...total environmental external force calculation unit, 19...lifespan information calculation unit, 21...sunlight ray intensity information memory unit, 22...building material characteristic information memory unit, 23...wall structure information memory unit, P1...program (environmental external force prediction program).

Claims

1. An environmental external force prediction system for predicting an environmental external force, which is an external force of deterioration caused by an environmental factor, in a building material installed in a building, comprising: a building material information acquisition unit that acquires location information indicating the location where a target building material, which is the building material to be predicted, is installed, direction information indicating the irradiation direction of the irradiation surface of the target building material that is irradiated with sunlight, building material identification information that identifies the target building material, and wall structure identification information that identifies the wall structure in which the target building material is installed; a sunlight intensity calculation unit that calculates the sunlight intensity for a calculation target period and a location where the target building material is installed based on the location information and by referring to sunlight intensity information, the sunlight intensity information including sunlight intensity for each date, time, and location; a specific direction sunlight intensity calculation unit that calculates a specific direction sunlight intensity, which is the sunlight intensity in the irradiation direction indicated by the directional information, at a location where the target building material is installed, based on the directional information and the sunlight intensity; a thermal effect prediction information calculation unit that calculates thermal effect prediction information of sunlight in the irradiation direction at a location where the target building material is installed based on the characteristic information on the target building material obtained by referring to building material characteristic information based on the building material identification information, the wall structure information on the wall structure in which the target building material is installed obtained by referring to the wall structure information based on the wall structure identification information, and the specific direction sunlight intensity, wherein the building material characteristic information is characteristic information including at least one of the material of each building material, and the density, specific heat, reflectance, and thermal conductivity of each material, and the wall structure information is information regarding the wall structure that constitutes the base of the building material, and includes at least one of the material of the wall structure, and the density, specific heat, thermal conductivity, etc. of each material; an environmental external force calculation unit that calculates the environmental external force on the target building material based on the specific direction solar ray intensity and the thermal impact prediction information; an output unit that outputs the calculated external environmental force; An environmental force prediction system comprising:

2. The solar ray intensity calculation unit calculates a global solar radiation amount as the solar ray intensity based on at least a solar altitude, or obtains a pre-calculated global solar radiation amount as the solar ray intensity, The global solar radiation includes solar radiation due to direct light and scattered light reaching the ground, The environmental force prediction system according to claim 1 .

3. the specific direction sunlight ray intensity calculation unit calculates the specific direction sunlight ray intensity by integrating the light ray intensities of direct light and scattered light from each direction onto the irradiation surface based on the global solar radiation acquired or calculated as the sunlight ray intensity; The environmental force prediction system according to claim 2 .

4. The thermal effect prediction information calculation unit calculates an average surface temperature of the irradiation surface for each hour as the thermal effect prediction information. The environmental force prediction system according to claim 1 .

5. The external environmental force calculation unit calculates, by equation (1), Environmental force = C × Σ [S τ exp(-Ea / RT)] ・・・Formula (1) (Constant C: Deterioration characteristic value due to solar radiation and temperature (4.68 x 10 ４ ) Variable S: solar ray intensity in the specific direction in a given unit period Constant τ: Deterioration characteristic value due to solar radiation (0.276) Constant Ea: Activation energy of deterioration due to solar radiation and temperature (35.6 KJ / mol) Constant R: gas constant (8.314 x 10 －３ KJ / mol / K) Variable T: average surface temperature of the irradiated surface in a predetermined unit period included in the thermal effect prediction information) The environmental force prediction system according to claim 1 , further comprising: a calculating unit for calculating the environmental force.

6. a unit period environmental force acquisition unit that acquires a unit period environmental force, which is the environmental force in a given unit period output by the environmental force prediction system according to claim 1, for a test specimen made of the building material and installed at an arbitrary exposure location; a total environmental external force calculation unit that calculates and outputs a total environmental external force by multiplying the unit period environmental external force by an aging deterioration period that is obtained in advance as a period from when the test specimen is placed in the exposure location until when the test specimen is no longer able to satisfy a predetermined performance; A durability information providing system comprising:

7. and a life information calculation unit that acquires the environmental forces for the unit period at an evaluation location, which is a location to be evaluated where the building material is installed, calculated and output by the environmental force prediction system, and divides the total environmental force calculated based on the test specimen made of the building material by the environmental force for the unit period at the evaluation location, thereby calculating and outputting life information represented by the unit period when the building material is installed at the evaluation location. The durability information providing system according to claim 6.

8. An environmental force prediction method executed by an environmental force prediction system including at least one processor, the environmental force prediction system predicting an environmental force that is an external force of deterioration caused by an environmental factor in a building material installed in a building, the environmental force prediction method comprising: a building material information acquisition step of acquiring location information indicating the location where the target building material, which is the building material to be predicted, is installed, direction information indicating the irradiation direction of the irradiation surface of the target building material that is irradiated with sunlight, building material identification information that identifies the target building material, and wall structure identification information that identifies the wall structure in which the target building material is installed; a sunlight intensity calculation step of calculating the sunlight intensity for a calculation target period and a location where the target building material is installed based on the location information and by referring to sunlight intensity information, the sunlight intensity information including sunlight intensity for each date, time and location; a specific direction sunlight intensity calculation step of calculating a specific direction sunlight intensity, which is a sunlight intensity in the irradiation direction indicated by the directional information at a location where the target building material is installed, based on the directional information and the sunlight intensity; a thermal effect prediction information calculation step for calculating thermal effect prediction information of sunlight in the irradiation direction at a location where the target building material is installed based on the characteristic information on the target building material obtained by referring to building material characteristic information based on the building material specific information, the wall structure information on the wall structure in which the target building material is installed obtained by referring to the wall structure information based on the wall structure specific information, and the specific direction sunlight intensity, wherein the building material characteristic information is characteristic information including at least one of the material of each building material, and the density, specific heat, reflectance, and thermal conductivity of each material, and the wall structure information is information regarding the wall structure constituting the base of the building material, and includes at least one of the material of the wall structure, and the density, specific heat, thermal conductivity, etc. of each material; an environmental external force calculation step of calculating the environmental external force on the target building material based on the specific direction solar ray intensity and the thermal impact prediction information; an output step of outputting the calculated external environmental force; The method for predicting external environmental forces includes the steps of:

9. An environmental force prediction program for causing a computer to function as an environmental force prediction system for predicting environmental forces that are external forces for deterioration of building materials installed in a building due to environmental factors, comprising: a building material information acquisition step of acquiring location information indicating the location where the target building material, which is the building material to be predicted, is installed, direction information indicating the irradiation direction of the irradiation surface of the target building material that is irradiated with sunlight, building material identification information that identifies the target building material, and wall structure identification information that identifies the wall structure in which the target building material is installed; a sunlight intensity calculation step of calculating the sunlight intensity for a calculation target period and a location where the target building material is installed based on the location information and by referring to sunlight intensity information, the sunlight intensity information including sunlight intensity for each date, time and location; a specific direction sunlight intensity calculation step of calculating a specific direction sunlight intensity, which is a sunlight intensity in the irradiation direction indicated by the directional information at a location where the target building material is installed, based on the directional information and the sunlight intensity; a thermal effect prediction information calculation step for calculating thermal effect prediction information of sunlight in the irradiation direction at a location where the target building material is installed based on the characteristic information on the target building material obtained by referring to building material characteristic information based on the building material specific information, the wall structure information on the wall structure in which the target building material is installed obtained by referring to the wall structure information based on the wall structure specific information, and the specific direction sunlight intensity, wherein the building material characteristic information is characteristic information including at least one of the material of each building material, and the density, specific heat, reflectance, and thermal conductivity of each material, and the wall structure information is information regarding the wall structure constituting the base of the building material, and includes at least one of the material of the wall structure, and the density, specific heat, thermal conductivity, etc. of each material; an environmental external force calculation step of calculating the environmental external force on the target building material based on the specific direction solar ray intensity and the thermal impact prediction information; an output step of outputting the calculated external environmental force; An environmental force prediction program that causes the computer to execute the above.

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