Damage evaluation program and damage evaluation device

Abstract

To provide a damage evaluation program and a damage evaluation device which can evaluate the damage of a building due to a flood according to the actual situation while considering a structure of the building more finely.SOLUTION: A damage evaluation program causes a computer to execute: a condition acquisition step S1 of acquiring an inundation depth of an object property; a region-based breakage degree acquisition step S2 of acquiring a breakage degree for each region of the object property at least on the basis of stored contents of a storage part which stores a breakage degree for each region of a building consisting of a plurality of regions in association with the inundation depth and the inundation depth acquired in the step S1; and an evaluation output step S5 of outputting an evaluation of damage of the object property on the basis of the breakage degree for each region of the object property acquired in the step S2.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a damage assessment program and a damage assessment device.

Background Art

[0002] Conventionally, there is a method for evaluating the damage of a building based on the degree of flooding caused by a flood. The system described in Patent Document 1 evaluates the damage of a building according to the degree of flooding based on the damage certification flow of damage caused by a flood for wooden, prefabricated, and non-wooden houses published by the Cabinet Office.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The above evaluation by the system of Patent Document 1 roughly divides the damage of the entire building into four levels: "total destruction", "major partial destruction", "partial destruction", and "not reaching partial destruction", and only directly associates with the flood depth and selects one of these four levels as the evaluation result. It is required to evaluate according to the actual situation of damage caused by a flood while considering the content of the building more precisely.

[0005] An object of the present invention is to provide a damage assessment program and a damage assessment device capable of evaluating the damage of a building caused by a flood according to the actual situation while considering the content of the building more precisely.

Means for Solving the Problems

[0006] The damage assessment program according to the present invention is a damage assessment program for assessing the damage of a target property due to flood damage, and includes a condition acquisition step of acquiring the inundation depth of the target property, the stored content of the part-by-part damage degree storage means for storing the degree of damage for each part in a building composed of a plurality of parts in association with the inundation depth, and a part-by-part damage degree acquisition step of acquiring the degree of damage for each part of the target property based at least on the inundation depth acquired in the condition acquisition step, and causing a computer to execute an evaluation output step of outputting an evaluation regarding the damage of the target property based on the degree of damage for each part of the target property acquired in the part-by-part damage degree acquisition step.

[0007] A damage assessment device according to another aspect of the present invention is a damage assessment device for assessing the damage of a target property due to flood damage, and includes a condition acquisition means for acquiring the inundation depth of the target property, the stored content of the part-by-part damage degree storage means for storing the degree of damage for each part in a building composed of a plurality of parts in association with the inundation depth, a part-by-part damage degree acquisition means for acquiring the degree of damage for each part of the target property based at least on the inundation depth acquired in the condition acquisition step, and an evaluation output means for outputting an evaluation regarding the damage of the target property based on the degree of damage for each part of the target property acquired in the part-by-part damage degree acquisition step.

[0008] The damage to a building for a certain inundation depth does not occur uniformly in every part of the building. In reality, the mode of damage that occurs for a certain inundation depth differs depending on the part, such as whether it is the foundation of the building or a pillar. Therefore, in the present invention, the degree of damage for each part of the building is associated with the inundation depth and stored in the part-by-part damage degree storage means. As a result, the degree of damage with respect to the inundation depth can be set to a content corresponding to the actual situation of the damage. Then, based on the stored content, the degree of damage of the target property corresponding to the inundation depth is acquired for each part, and the damage of the target property is evaluated based on the degree of damage for each part. Therefore, compared with the prior art, it is possible to evaluate the damage according to the actual situation of the damage caused by flood damage while considering the content of the building in more detail.

[0009] Note that the evaluation of the damage to the building in the present invention can be performed either before the occurrence of flood damage or after the occurrence of flood damage.

[0010] Further, in the present invention, the degree-of-damage memory means for each part stores the degree of damage for each part of the building in association with the number of floors of the building or the floor where the target property is located. In the condition acquisition step, the number of floors or the floor where the target property is located is further acquired. In the degree-of-damage acquisition step for each part, it is preferable that the degree of damage for each part of the target property is acquired based on both the stored content of the degree-of-damage memory means for each part and the inundation depth and the number of floors of the target property or the floor where the target property is located.

[0011] The degree of damage for each part varies depending on the number of floors of the building or the floor where the target property is located. According to the above, the degree-of-damage memory means for each part stores the degree of damage for each part of the building in association with the number of floors of the building or the floor where the target property is located. Then, the degree of damage for each part based on both the inundation depth and the number of floors of the target property or the floor where the target property is located is acquired from the stored content. Therefore, a more detailed evaluation of the damage according to the actual situation of the damage caused by flood damage is possible.

[0012] Further, in the present invention, based on the stored content of the construction cost relative value memory means that stores the relative magnitude of the construction cost for each part of the building with respect to the magnitude of the construction cost of the entire building, and the degree of damage for each part of the target property acquired in the degree-of-damage acquisition step for each part, a step of acquiring the relative magnitude of the damage amount for each part of the target property with respect to the damage amount of the entire target property, which is a step of acquiring damage for each part, is further executed by the computer. In the evaluation output step, it is preferable that at least one of the relative magnitude of the damage for each part of the target property acquired in the step of acquiring damage for each part and the magnitude of the damage of the entire target property is output.

[0013] In the present invention, the degree of damage to the target property can be obtained for each part. Therefore, based on the degree of damage for each part and the relative magnitude of the construction cost for each part with respect to the magnitude of the construction cost of the entire building stored in the construction cost relative value storage means, the damage for each part can be derived in detail and in a manner corresponding to the actual situation of damage caused by flooding.

[0014] Further, in the present invention, the construction cost relative value storage means stores the relative magnitude of the construction cost for each part of the building in association with the first type of the building, and in the condition acquisition step, the first type of the target property is further acquired. In the damage acquisition step for each part, it is preferable that the relative magnitude of the damage amount is acquired based on the stored content of the construction cost relative value storage means associated with the first type acquired in the condition acquisition step and the degree of damage for each part of the target property acquired in the damage degree acquisition step for each part.

[0015] The relative magnitude of the construction cost for each part of the building varies depending on the type (for example, the type related to the use). According to the above, the construction cost relative value storage means stores the relative magnitude of the construction cost for each part of the building in association with the first type of the building. Then, the relative magnitude of the construction cost for each part based on the first type is acquired from the stored content. Therefore, a more detailed evaluation of the damage corresponding to the actual situation of damage caused by flooding becomes possible.

[0016] Further, in the present invention, the damage degree storage means for each part stores the degree of damage for each part of the building in association with the second type of the building, and in the condition acquisition step, the second type of the building of the target property is further acquired. In the damage degree acquisition step for each part, it is preferable that the degree of damage for each part of the target property is acquired based on the stored content of the damage degree storage means for each part, the depth of inundation acquired in the condition acquisition step, the number of floors of the target property or the floor where the target property is located, and the second type of the building.

[0017] The degree of damage for each part varies depending on the type of building (for example, the type related to the structure). According to the above, the damage degree memory means for each part further associates and stores the degree of damage for each part of the building with the second type of building. Then, the degree of damage for each part is obtained based on the water immersion depth, the number of floors of the target property, or the floor where the target property is located and the second type of building from the stored content. Therefore, a more detailed damage assessment according to the actual situation of damage caused by flooding becomes possible. Note that the second type may be the same type as the first type or a different type. For example, the first type may be a type related to the structure, and the second type may be a type related to both the structure and the use. Also, both the first type and the second type may be types related to the structure. Furthermore, for each of the first type and the second type, a type that is neither a structure nor a use may be adopted.

[0018] In the present invention, the association between the degree of damage stored by the damage degree memory means for each part and the water immersion depth is based on a predetermined reference floor height. In the condition acquisition step, the floor height of the target property is further acquired, and the association between the degree of damage and the water immersion depth is converted according to the difference between the floor height of the target property acquired in the condition acquisition step and the predetermined reference floor height, while obtaining the degree of damage for each part of the target property based on the stored content of the damage degree memory means for each part.

[0019] According to this, the degree of damage for each part with respect to the water immersion depth can be appropriately evaluated according to the difference in floor height.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0021] The damage assessment device 1 to which the program according to a preferred embodiment of the present invention is applied will be described below with reference to FIGS. 1 and 2.

[0022] The damage assessment device 1 according to this embodiment is a device that assesses damage caused by assumed flood damage to a property to be evaluated (hereinafter referred to as the target property). As shown in FIG. 1, the damage assessment device 1 includes a display 10, an input device 20, and a calculation unit 30. The display 10 is a device having a screen for displaying characters, images, and the like according to the control of the calculation unit 30. The input device 20 includes a device that accepts user input such as a mouse and a keyboard, and a device that reads data stored in a portable storage device such as a USB (Universal Serial Bus) memory and an SDRAM (Synchronous Dynamic Random Access Memory). The input device 20 accepts various data inputs and transmits the input data to the calculation unit 30.

[0023] The calculation unit 30 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), a storage, and the like. Software composed of data such as programs (corresponding to the damage assessment program of the present invention) stored in storage devices such as the ROM, RAM, and storage causes hardware such as the CPU to execute various processes, thereby realizing the functions of the calculation unit 30 described below.

[0024] The calculation unit 30 has a storage unit 31, an evaluation calculation unit 32, and an evaluation output unit 33. The storage unit 31 (corresponding to the part-by-part damage degree storage means of the present invention) stores property information, flood depth, a part-by-part damage degree table, and a composition ratio table. The property information and the flood depth are input through the input device 20 or through a communication network such as a LAN (Local Area Network) or the Internet. The property information indicates the number of basement floors and the number of above-ground floors or the corresponding floor, the structure, and the use of the building that is the target property. The number of basement floors represents the number of basement levels of the building. For example, for a building with up to 2 basement floors, the number of basement floors is 2. The number of above-ground floors indicates how many above-ground floors the building has. For example, if it is a 5-story building, the number of above-ground floors is 5. The corresponding floor indicates on which floor of the entire building the target property is located when the target property is a condominium building (hereinafter referred to as a "condominium") such as a single room in an apartment. The structure indicates any one of wooden, non-wooden, and condominium. Wooden and non-wooden correspond to the case where the entire building such as a single building is the target property rather than a condominium. The use indicates any one of office, store, factory, warehouse, residence, and hotel. The flood depth is the depth of flooding due to a flood assumed at the location of the target property. Note that the use is not limited to the above. For example, it may be a dormitory, hospital, school, inn, etc.

[0025] The evaluation by the damage evaluation device 1 is by comprehensively evaluating the damage of each of a plurality of parts that make up the building. The plurality of parts include a foundation, columns and beams, a roof, an outer wall, a floor, an inner wall, a ceiling, fittings, electrical power distribution equipment, and water supply and drainage equipment.

[0026] The damage degree table by part is a table that shows the degree of damage to a building due to flood damage by part of the building, as shown in the following Tables 1 to 3 as an example. The damage degree table by part is prepared for each structure of the building. Table 1 corresponds to the wooden structure, Table 2 corresponds to the non-wooden structure, and Table 3 corresponds to the sectional structure. Also, the damage degree table by part is prepared for each part, that is, for each of the foundation, columns and beams, roof, outer wall, floor, inner wall, ceiling, fixtures, electrical power distribution equipment, and water supply and drainage equipment. Tables 1 and 3 show an example of the table for the foundation among these parts. Similarly, Table 2 shows an example of the table for the electrical power distribution equipment. Each table associates the damage rate by part indicating the degree of damage in each part with the flood depth and the number of above-ground floors or the corresponding floor. The damage rate by part indicates the magnitude of the damage received by each part due to flood damage as a percentage. In the present embodiment, the damage rate by part indicates how much the cost required to recover the damage to that part is with respect to the amount of that part in the reprocurement cost. As the "cost required to recover the damage to that part", a method of appraising the damage of the economic value according to the degree of damage to the part is adopted. As the method, according to the assumed damage mode for each part, a method of only cleaning and repairing that part, a method of replacing only that part, a method of removing and reinstalling including the surrounding parts, and a method of removing and reinstalling the entire building are distinguished and applied. As a method of obtaining the reprocurement cost, any method such as a method of appraising the reprocurement cost at the time of evaluation from the construction cost, etc. based on the current subcontracting contract of the target property, a method of appraising from similar construction cases, and a method of statistically obtaining based on many construction cases of the same use may be adopted. The flood depth is represented by a range consisting of an upper limit value and a lower limit value, and the unit of any value is centimeter (cm). In Tables 1 to 3, the difference between the upper limit value and the lower limit value is 50 cm (when the flood depth in the same table is 300 cm or more, the difference is 100 cm). The damage due to flood damage largely depends on how high the flood reaches on which floor, as described later. For this reason, even with the same flood depth, there is a difference in damage depending on the floor height of the building (height per floor). A specific floor height is set as a standard in the damage degree table by part. The standard floor height in Tables 1 to 3 is 300 cm. And, as described later, the table is converted and used according to the actual floor height of the building. The number of above-ground floors and the corresponding floor are as described above.Note that the "Reached Level" and "Assumed Damage" in Tables 1 to 3 are for reference and may or may not be included in the damage degree table by part.

[0027] [Table 1] <Example 1 of the damage degree table by part (wooden structure)> JPEG2025109079000002.jpg44170

[0028] [Table 2] <Example 2 of the damage degree table by part (non-wooden structure)> JPEG2025109079000003.jpg44170

[0029] [Table 3] <Example 3 of the damage degree table by part (district construction structure)> JPEG2025109079000004.jpg49170

[0030] For example, for a 5-story wooden structure building, when the assumed water depth is 220 cm, from Table 1, the damage rate by part of its foundation is 1.3%. For a 3-story non-wooden structure building, when the assumed water depth is 450 cm, from Table 2, the damage rate by part of its power distribution equipment is 40%. For a property located on the 2nd floor of a district construction structure, when the assumed water depth is 810 cm, from the table, the damage rate by part of its foundation is 3.3%. In this embodiment, as shown in Tables 1 and 2, the damage degree tables for wooden and non-wooden structures include the damage rates by part up to the 6th floor above ground. That is, the maximum value of the number of floors above ground in the table setting (hereinafter referred to as the "maximum set floor") is 6. When applying these tables to buildings with 7 or more floors above ground, as described later, after calculating the damage degree based on the damage rate by part of the 6th floor above ground, conversion according to the actual number of floors is performed. Also, as shown in Table 3, the damage degree table for the district construction structure includes damage rates by part that vary according to the corresponding floor values from 1 to 6, and damage rates by part that do not vary according to the corresponding floor values for floor values 7 and above.

[0031] The damage caused by water disasters depends largely on the floor and height to which the flooding reaches. For example, when a water disaster occurs, the difference in whether the contaminated water reaches the floor or the power plug insertion port causes a discontinuous change in the magnitude of the damage. Regarding this, the damage degree table by part represents the magnitude of damage that changes stepwise according to the depth of flooding. As an example, Table 2 shows that when the flooding depth is 50 - 100 cm, the damage rate by part is larger compared to a smaller flooding depth, and when the flooding depth is 250 - 300 cm, the damage rate by part is larger compared to a smaller flooding depth. This reflects that when the flooding depth reaches 70 cm, repair work including replacement of the power plug insertion port is assumed, and when the flooding depth reaches 2.4 m, full replacement work of the electrical wiring facilities on the affected floor is assumed.

[0032] The composition ratio table is a table showing the composition ratio by part and is prepared for each use and structure of the target property. The composition ratio corresponds to the relative magnitude of the construction cost for each part of the building with respect to the magnitude of the construction cost. In the present embodiment, the ratio of each of the foundation, columns and beams, roof, outer wall, floor, inner wall, ceiling, fixtures, electrical power distribution facilities, and water supply and drainage facilities in the re-procurement cost is shown as a percentage value as the composition ratio. Summing up the above composition ratios for all parts in each use of each structure results in 100% in each case. Note that the fact that the storage unit 31 stores the composition ratio table corresponds to the function of the construction cost relative value storage means of the present invention. Table 4 shows, as an example, a part of the composition ratio in a wooden structure by part and by use. Such tables are also prepared for each non-wooden and sectional construction structure.

[0033] [Table 4] <An example of the composition ratio table (wooden structure)> TIFF2025109079000005.tif29170

[0034] The evaluation calculation unit 32 (corresponding to the damage degree acquisition means by part of the present invention) calculates the degree of damage for each part of the target property as follows based on the stored content of the storage unit 31.

[0035] First, the evaluation calculation unit 32 obtains, for each part, the part-by-part damage rate corresponding to the property information in the storage unit 31 from the part-by-part damage degree table in the storage unit 31. The method for obtaining the part-by-part damage rate differs as follows depending on the structure.

[0036] For wooden structures and non-wooden structures, the part-by-part damage rate for the ground floor and the part-by-part damage rate for the above-ground floors are obtained respectively. For the part-by-part damage rate of the ground floor, the value where the number of above-ground floors in the part-by-part damage degree table is 1 is used. For example, as shown in Table 1, for the part-by-part damage rate of the foundation of a wooden structure, values such as 5.0% for a water immersion depth of 0 to 250 cm, 10.0% for 250 to 300 cm, and 20.0% for 300 to 400 cm are used.

[0037] The part-by-part damage rate for the above-ground floors is obtained as follows according to whether the number of above-ground floors indicated by the property information is less than or equal to the maximum set floor number. First, when the number of above-ground floors indicated by the property information is less than or equal to the maximum set floor number, the value corresponding to the number of above-ground floors indicated by the property information in the part-by-part damage degree table is used. For example, as shown in Table 2, for the part-by-part damage rate of the power distribution equipment of a non-wooden structure with 4 above-ground floors, values such as 0.0% for a water immersion depth of 0 to 50 cm, 5.0% for 50 to 150 cm, and 10.0% for 150 to 250 cm are used.

[0038] On the other hand, when the number of above-ground floors indicated by the property information exceeds the maximum set floor number, the part-by-part damage rate when the number of above-ground floors is the maximum set floor number is used. For example, as the part-by-part damage rate of the power distribution equipment of a non-wooden structure with 12 above-ground floors, based on the part-by-part damage rate for 6 above-ground floors in Table 2, values such as 0.0% for a water immersion depth of 0 to 50 cm, 3.3% for 50 to 150 cm, and 6.7% for 150 to 250 cm are used.

[0039] For the sectional building, the value of the corresponding floor shown in the property information is used as the damage rate by part. For example, as shown in Table 3, for the damage rate by part of the foundation of the sectional building where the corresponding floor is 2, the values are 0.0% for the water immersion depth of 0 to 300 cm, 1.7% for 300 to 600 cm, 3.3% for 600 to 900 cm, and so on. Also, for example, as shown in Table 3, for the damage rate by part of the foundation of the sectional building where the corresponding floor is 7 or higher, the values are 0.0% for the water immersion depth of 0 to 300 cm, 0.3% for 300 to 600 cm, 1.1% for 600 to 900 cm, and so on.

[0040] Then, the evaluation calculation unit 32 extracts the value corresponding to the floor height shown in the property information and the water immersion depth of the storage unit 31 from these values. First, the damage degree table by part is converted according to the floor height shown in the property information. As an example, assume that the floor height shown in the property information is 250 cm. In contrast, Tables 1 to 3 have a reference floor height of 300 cm. Therefore, when the water immersion depth is less than 300 cm, the value in the range of water immersion depth D cm to D + 50 cm in each table (D: a real number of 0 or more) is treated as the value in the range of D * 250 / 300 cm to (D + 50) * 250 / 300 cm. Also, when the water immersion depth is 300 cm or more, the value in the range of D cm to D + 100 cm is treated as the value in the range of D * 250 / 300 cm to (D + 100) * 250 / 300 cm. However, the range of 0 to 50 cm corresponding to under the floor is not changed. For example, for the electrical power distribution equipment of a non-wood structure with 4 above-ground floors, when the damage rate by part shown in Table 2 is converted to a floor height of 250 cm, the values are 0.0% for the water immersion depth of 0 to 50 cm, 5.0% for 50 to 125 cm, 10.0% for 125 to 208 cm, 25.0% for 208 to 250 cm, and so on. Next, the value corresponding to the water immersion depth shown in the property information is extracted from the converted values. For the above example (electrical power distribution equipment of a non-wood structure with 4 above-ground floors and a floor height of 250 cm), 0% is extracted for the water immersion depth of 25 cm, 10.0% is extracted for the water immersion depth of 130 cm, and 25.0% is extracted for the water immersion depth of 230 cm.

[0041] Next, the evaluation calculation unit 32 acquires, from the composition ratio table in the storage unit 31, the composition ratios corresponding to the structure and use indicated by the property information in the storage unit 31. For example, as shown in Table 4, the composition ratio values for a wooden structure and an office use are: foundation 5%, columns and beams 5%, roof 10%... The composition ratio values for a wooden structure and a factory use are: foundation 10%, columns and beams 5%, roof 35%...

[0042] Table 5 shows, as an example, the damage rates and composition ratios by part in the basement floor and above-ground floors that the evaluation calculation unit 32 acquired for one piece of property information related to a wooden structure or a non-wooden structure with the number of above-ground floors being less than or equal to the maximum set number of floors.

[0043] [Table 5] [Example of Acquisition of Damage Rates and Composition Ratios by Part] TIFF2025109079000006.tif24170

[0044] Then, the evaluation calculation unit 32 calculates the degree of damage for each part based on the damage rates and composition ratios by part acquired as described above. The degree of damage indicates, as a percentage, the proportion that each part occupies with respect to the basement floor equivalent or above-ground floor equivalent of the redevelopment cost. For example, when the above-ground floor equivalent of the redevelopment cost is 1 billion yen, a damage degree of 4.2% for a certain part indicates that the estimated damage amount for that part is 42 million yen. The degree of damage is obtained as follows according to whether the building is a sectional structure or not, and whether the number of above-ground floors indicated by the property information is less than or equal to the maximum set number of floors when it is not a sectional structure (i.e., when it is a wooden structure or a non-wooden structure).

[0045] First, when the target property is a sectional structure, or when the target property is not a sectional structure and the number of above-ground floors is less than or equal to the maximum set number of floors, as shown in the following formula 1, the result of multiplying the damage rate by part and the composition ratio for each part is taken as the degree of damage.

[0046] [Formula 1] (Degree of damage for each part) = (Damage rate by part) * (Composition ratio of each part)

[0047] Table 6 shows the damage degree for each part calculated from the damage rate and composition ratio by part in Table 5 based on Equation 1. For example, the damage degree of the floor of the basement is 147.1% * 4.0% = 5.9%. Also, the damage degree of the fixtures on the above-ground floors is 14.8% * 6.0% = 0.9%. The subtotal in Table 6 is the sum of the damage degrees for all parts for the basement and the above-ground floors respectively when the number of above-ground floors is less than the maximum value of the set floors.

[0048] [Table 6] <Example 1 of Calculation of Damage Degree for Each Part> TIFF2025109079000007.tif18170

[0049] On the other hand, when the target property is not of a sectional structure and the number of above-ground floors exceeds the maximum value of the set floors, the following conversion shown in Equation 2-1 is made to the damage degree calculated based on Equation 1. The following Table 7 shows, as an example, the damage degree for each part calculated for a 12-story non-wooden building based on Equations 1 and 2-1. That is, when the damage degree of the inner wall before conversion calculated by Equation 1 is 4.0% (a calculated value based on the damage rate by part when the number of above-ground floors is the maximum value of the set floors), based on Equation 2-1, the damage degree of the above-ground floors after conversion is calculated as 4.0% * 6 floors / 12 floors = 2.0%. The subtotal in Table 7 is the sum of the damage degrees for all parts for the basement and the above-ground floors respectively. In this case, instead of Equation 2-1, the conversion may also be made by multiplying the result of summing up the damage degrees by Equation 1 for all parts by [(maximum value of the set floors) / (number of above-ground floors)].

[0050] [Equation 2-1] (Damage Degree of Above-Ground Floors after Conversion) =(Damage Degree of Above-Ground Floors by Equation 1) * (Maximum Value of the Set Floors) / (Number of Above-Ground Floors)

[0051] [Table 7] <Example 2 of Calculation of Damage Degree for Each Part> TIFF2025109079000008.tif18170

[0052] In addition, when the target property is not of the sectional construction type, not only the number of above-ground floors but also the floor area of each floor in the building may not be constant. In this case, instead of Equation 2-1, conversion may be made according to the floor area of each floor. A simple calculation example is shown in the following Equation 2-2. This example represents a building where the floor area of each floor above the maximum set floor level is 50% when the floor area of the maximum set floor level part is 100%.

[0053] [Equation 2-2] (Damage degree of the above-ground floors after conversion) =(Damage degree of the above-ground floors according to Equation 1)*(Maximum set floor level * 100%) / (Maximum set floor level * 100% + (Number of above-ground floors - Maximum set floor level) * 50%)

[0054] The evaluation output unit 33 (corresponding to the evaluation output means of the present invention) causes the damage degree for each part calculated by the evaluation calculation unit 32 to be displayed on the display 10. When the target property is of the wooden structure or non-wooden structure type, the display 10 displays the name of the part and the damage degree on the screen in a table format shown in, for example, Table 6 or Table 7. Also, when the target property is of the sectional construction type, the display 10 outputs the damage degree for each part corresponding to the relevant floor in a table format similar to, for example, Table 6.

[0055] In addition, when the target property is of the wooden structure or non-wooden structure type, the evaluation output unit 33 may cause the damage degree combining the basement floor and the above-ground floors to be displayed on the display 10 for each part. The damage degree combining the basement floor and the above-ground floors is calculated for each part based on the following Equation 3.

[0056] [Equation 3] (Damage degree combining the basement floor and the above-ground floors) =(Damage degree of the basement floor)*α+(Damage degree of the above-ground floors)*β However, α=(Number of basement floors) / [(Number of basement floors)+(Number of above-ground floors)] β=(Number of above-ground floors) / [(Number of basement floors)+(Number of above-ground floors)]

[0057] Further, the evaluation output unit 33 may display the damage degree of the entire target property on the display 10. The damage degree of the entire target property corresponds to the value obtained by summing up the damage degrees of all parts. For example, when the target property is a sectional structure, the sum of the damage degrees of all parts calculated by the above formula 1 is taken as the damage degree of the entire target property. Also, when the target property is a wooden structure or a non-wooden structure, the sum of the damage degrees of all parts calculated by the above formula 3 is taken as the damage degree of the entire target property. Note that the damage degree of the entire target property may be the sum of the result of multiplying the sum of the damage degrees of all parts of the basement floor calculated based on formula 1 by α and the result of multiplying the sum of the damage degrees of all parts of the above-ground floors calculated based on formula 1 or formula 2-1 or formula 2-2 by β.

[0058] Hereinafter, the flow of a series of processes executed by the arithmetic unit 30 will be described with reference to FIG. 2. First, the evaluation calculation unit 32 of the arithmetic unit 30 acquires property information and the inundation depth related to the property to be evaluated from the storage unit 31 (S1; corresponding to the condition acquisition step of the present invention). Next, the evaluation calculation unit 32 acquires the damage rate for each part corresponding to the property information and the inundation depth acquired in S1 for each part from the damage degree table for each part in the storage unit 31 (S2; corresponding to the step of acquiring the damage degree for each part of the present invention). In obtaining the damage rate for each part, as described above, conversion is performed according to the floor height indicated by the property information. Also, for properties with wooden structures and non-wooden structures, as described above, the damage rate for each part corresponding to whether the number of above-ground floors is less than or equal to the set maximum number of floors is acquired. That is, when the number of above-ground floors is less than or equal to the set maximum number of floors, the damage rate for each part corresponding to the number of above-ground floors is acquired, and when the number of above-ground floors exceeds the set maximum number of floors, the damage rate for each part corresponding to the set maximum number of floors is acquired.

[0059] Next, the evaluation calculation unit 32 acquires the composition ratio corresponding to the property information acquired in S1 from the composition ratio table in the storage unit 31 (S3). Next, the evaluation calculation unit 32 calculates the degree of damage for each part based on the damage rate for each part acquired in S2 and the composition ratio acquired in S3 (S4; corresponding to the step of acquiring damage for each part of the present invention). As described above, the calculation of the degree of damage is performed according to whether the number of above-ground floors is less than or equal to the maximum value of the set floors for wooden and non-wooden structures. When the number of above-ground floors is less than or equal to the maximum value of the set floors, it is calculated by multiplying the damage rate for each part acquired in S2 by the composition ratio acquired in S3 as shown in the above formula 1. When the number of above-ground floors exceeds the maximum value of the set floors, it is calculated by multiplying the damage rate for each part acquired in S2 by the composition ratio acquired in S3 and further performing a conversion according to the number of above-ground floors as shown in the above formulas 1 and 2. For a building with a sectional structure, it is performed by multiplying the damage rate for each part of the corresponding floor by the composition ratio. Next, the evaluation output unit 33 causes the display 10 to display the degree of damage calculated in S4 (S5; corresponding to the evaluation output step of the present invention).

[0060] According to the damage evaluation device 1 according to the present embodiment described above, the following evaluations are possible. The damage to a building for a certain inundation depth does not occur uniformly in any part of the building. In reality, the mode of damage that occurs for a certain inundation depth is different depending on the part, for example, whether it is the foundation of the building or a pillar. Therefore, in the present embodiment, the storage unit 31 stores a part-by-part damage degree table in which the part-by-part damage rate indicating the degree of damage for each part of the building is associated with the inundation depth. Thereby, the degree of damage for the inundation depth can be set to the content according to the actual situation of the damage. Then, based on the part-by-part damage degree table, the part-by-part damage rate of the target property corresponding to the inundation depth is acquired, and the degree of damage of the target property is calculated based on the part-by-part damage rate. Therefore, it is possible to evaluate the damage according to the actual situation of the damage caused by flood damage while considering the content of the building more precisely than the prior art.

[0061] The evaluation of the damage of the building in the present embodiment is performed based on the assumed inundation depth as described above. Therefore, it is possible to perform the evaluation before a flood actually occurs.

[0062] In addition, the degree of damage for each part also varies depending on the number of above-ground floors of the building or the corresponding floor. In the present embodiment, the damage degree table for each part associates the number of above-ground floors or the corresponding floor of the target property with the damage rate for each part. Then, based on the damage rate for each part according to both the number of above-ground floors or the corresponding floor of the target property and the inundation depth, the degree of damage for each part of the target property is obtained. Therefore, it is possible to perform a more detailed evaluation of the damage according to the actual situation of the damage caused by the flood damage.

[0063] In addition, in the present embodiment, the storage unit 31 stores a composition ratio table showing the composition ratio, which is the ratio occupied by each part in the re-procurement cost, for each structure and use of the target property. Therefore, based on the composition ratio and the damage rate for each part, it is possible to derive the damage degree for each part with a content corresponding to the actual situation of the damage for each use of the target property in a more detailed manner.

[0064] In addition, in the present embodiment, the damage degree table for each part includes the damage rate for each part according to the structure of the building. Therefore, it is possible to perform a more detailed evaluation of the damage according to the actual situation of the damage caused by the flood damage.

[0065] In addition, in the present embodiment, the association between the damage rate for each part and the inundation depth in the damage degree table for each part is based on the standard floor height, and the association between the damage rate for each part and the inundation depth is converted according to the actual floor height of the target property. For this reason, it is possible to perform an evaluation according to properties with various floor heights.

[0066] <Modification Example> As described above, the embodiments of the present invention have been described with reference to the drawings, but the specific configuration should not be considered to be limited to these embodiments. The scope of the present invention is shown not by the description of the above embodiments but by the claims, and further includes all modifications within the meaning and scope equivalent to the claims.

[0067] For example, in the above-described embodiment, the composition ratio is set based on the reprocurement cost. Instead of this reprocurement cost, the composition ratio may be set based on a criterion different from the reprocurement cost related to the construction cost of the entire building. For example, the actual construction contract amount at the time of construction of the target building may be used, and the composition ratio may be set based on this.

[0068] Also, in the above-described embodiment, regarding the "necessary cost for recovering the damage of that part", a method such as cleaning or repair according to the degree of damage, or a method of removing and reinstalling is used. Instead of this method, a method of appraising with the asset value according to the aging change of that part, or a method of appraising with the new price of that part may be adopted.

[0069] Also, in the above-described embodiment, it is assumed that the floor height of the target property is a constant value (for example, 250 cm) regardless of the floor. On the other hand, the present invention may be applied to a target property in which the floor height of at least some floors is different from that of other floors. In this case, different conversions may be made for each floor with respect to the damage degree table by part. For example, when the above Tables 1 to 3 are converted for a target property where the floor height of the first floor is 250 cm and the floor height of the second floor is 280 cm, the damage rates by part of (1F) 50 to 100 cm, 100 to 150 cm... 250 to 300 cm, and the damage rates by part of (2F) 300 to 400 cm... 500 to 600 cm are, after conversion, treated as the damage rates by part of (1F) 50 to 83 cm, 83 to 125 cm... 208 to 250 cm, and the damage rates by part of (2F) 250 to 343 cm... 437 to 530 cm.

[0070] Also, in the above-described embodiment, the results in each process of the calculation are displayed as ratios. Instead of this method, different methods such as amounts may be adopted. For example, in the above-described embodiment, the damage rate by part is used as the damage degree by part. The damage rate by part indicates the degree to which the necessary cost for recovering the damage of each part is relative to the amount of that part in the reprocurement cost. Instead of this, the necessary cost (amount) itself for recovering the damage of each part may be used as the damage degree by part.

Explanation of Symbols

[0071] 1 Damage evaluation device 10 Display 30 Arithmetic unit 31 Memory unit 32 Evaluation calculation unit 33 Evaluation output unit

Claims

1. A damage assessment program for assessing damage to a target property due to flood damage, comprising: a condition acquisition step of acquiring the depth of inundation of the target property; a step of acquiring the degree of damage for each part of the target property based at least on the stored content of the part-by-part damage degree storage means that associates the degree of damage for each part in a building composed of a plurality of parts with the depth of inundation, and the depth of inundation acquired in the condition acquisition step; a damage assessment program characterized in that a computer is caused to execute an evaluation output step of outputting an evaluation regarding the damage to the target property based on the degree of damage for each part of the target property acquired in the part-by-part damage degree acquisition step.

2. The part-by-part damage degree storage means further stores the degree of damage for each part of the building in association with the number of floors of the building or the floor where the target property is located, the number of floors or the floor where the target property is located is further acquired in the condition acquisition step, The damage assessment program according to claim 1, wherein in the part-by-part damage degree acquisition step, the degree of damage for each part of the target property is acquired based on the stored content of the part-by-part damage degree storage means, the depth of inundation, and both the number of floors of the target property or the floor where the target property is located.

3. Based on the stored content of the construction cost relative value storage means that stores the relative magnitude of the construction cost for each part of the building with respect to the magnitude of the construction cost of the entire building, and the degree of damage for each part of the target property acquired in the part-by-part damage degree acquisition step, a computer is further caused to execute a part-by-part damage acquisition step of acquiring the relative magnitude of the damage amount for each part of the target property with respect to the total damage amount of the target property, The damage assessment program according to claim 2, wherein in the evaluation output step, at least one of the relative magnitude of the damage for each part of the target property acquired in the part-by-part damage acquisition step and the magnitude of the damage to the entire target property is output.

4. The construction cost relative value storage means stores the relative magnitude of the construction cost in association with the first type of building, in the condition acquisition step, the first type of the target property is further acquired, In the step of obtaining damage by part, based on the stored content of the building cost relative value storage means associated with the first type obtained in the condition obtaining step and the degree of damage for each part of the target property obtained in the step of obtaining the degree of damage by part, the relative magnitude of the damage amount is obtained. The damage evaluation program according to claim 3, characterized in that.

5. The means for storing the degree of damage by part stores the degree of damage for each part of the building in association with the second type of the building. In the condition obtaining step, the second type of the target property is further obtained. In the step of obtaining the degree of damage by part, based on the stored content of the means for storing the degree of damage by part, the depth of inundation obtained in the condition obtaining step, the number of floors of the target property or the floor where the target property is located, and the second type, the degree of damage for each part of the target property is obtained. The damage evaluation program according to claim 2, characterized in that.

6. The association between the degree of damage stored by the means for storing the degree of damage by part and the depth of inundation is based on a predetermined reference floor height. In the condition obtaining step, the floor height of the target property is further obtained. Based on the stored content of the means for storing the degree of damage by part, while converting the association between the degree of damage and the depth of inundation according to the difference between the floor height of the target property obtained in the condition obtaining step and the predetermined reference floor height, the degree of damage for each part of the target property is obtained. The damage evaluation program according to claim 1, characterized in that.

7. A damage evaluation device for evaluating the damage of a target property due to flood damage, comprising: Condition obtaining means for obtaining the depth of inundation of the target property; Means for obtaining the degree of damage by part, which obtains the degree of damage for each part of the target property based on at least the stored content of the means for storing the degree of damage by part, which associates the degree of damage for each part in a building composed of a plurality of parts with the depth of inundation, and the depth of inundation obtained in the condition obtaining step; Evaluation output means for outputting an evaluation regarding the damage of the target property based on the degree of damage for each part of the target property obtained in the step of obtaining the degree of damage by part. The damage evaluation device is characterized by the above.

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