JP2019109945A - Support system, support method, and program - Google Patents

Abstract

To present a period suitable for carrying out rebuilding for a building to be considered.SOLUTION: A support system, in which a predetermined consideration period predefined as a period in which a building to be considered is considered is divided into a plurality of unit periods and a rebuilding scenario assuming that rebuilding of the building to be considered will be carried out in any of the unit periods within the consideration period is defined, includes: a cost calculation unit which calculates a cumulative amount of cost, within the consideration period, including cost required for maintaining and rebuilding the building to be considered under the rebuilding scenario in correspondence with a unit period in which the rebuilding of the building is assumed to be carried out in the rebuilding scenario; and a recommended period calculation unit which, based on the cumulative amount of the cost calculated for each unit period within the consideration period, defines a threshold value from a value obtained from a different between a maximum value of the cumulative amount and a minimum value of the cumulative amount and calculates, through determination based on the threshold value, the candidate period in which the rebuilding is carried out.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a support system, support method, and program for presenting a period suitable for rebuilding an existing building.

When investigating the deterioration of a building, many problems may be found in interiors and facilities, etc., and it may be found that a large amount of repair and renewal costs are required. In that case, the owner of the building is forced to make a decision on whether the building should be used continuously or rebuilt with the cost of repair and renewal.
According to the current concept of facility management, the superiority or inferiority of life extension or rebuilding is determined by comparing the life cycle cost (LCC) when extending an existing building with the life cycle cost when rebuilding. For this reason, it was not possible to determine when it is efficient to rebuild a building according to the current concept of facility management.

  There is a related asset operation management support system (see Patent Document 1). The asset operation management support system described in Patent Document 1 is for a plurality of structures such as bridges at a time when the maintenance / repair measures and update measures associated with maintenance management are optimal for each structure, in the short and medium terms. And support planning to execute to meet the long-term budget.

Unexamined-Japanese-Patent No. 2006-323741

In the building evaluation system described in Patent Document 1, for each bridge, a plurality of scenarios are selected in which the acceptable level of the soundness level and the recovery level are used as indicators. Then, the building evaluation system of Patent Document 1 predicts the soundness in the future based on the deterioration prediction formula of the bridge, executes the calculation processing of the LCC accumulated amount for each of the plurality of scenarios, and minimizes this LCC. Select the scenario The selected scenario may be changed in implementation timing based on the budget plan, and may be changed to another scenario.
However, the building evaluation system of Patent Document 1 does not disclose a method for presenting a rebuilding period that is cost-effective within a predetermined examination period for a building or other building.

  The present invention has been made in view of such circumstances, and an object of the present invention is to present a period suitable for carrying out rebuilding within a predetermined examination period for one or more buildings to be examined. It is possible to provide a support system, a support method, and a program that can.

  The present invention has been made to solve the above problems, and in the support system of the present invention, a predetermined examination period predetermined as a period for examining a building to be examined is divided into a plurality of unit periods, A rebuilding scenario is defined on the assumption that rebuilding of the building under consideration is performed in any of the unit periods within the review period, and maintenance and rebuilding of the building under consideration under the rebuilding scenario are defined. Cost calculation unit for calculating the cumulative amount expected to be incurred within the examination period of the cost including the cost to the unit period assumed to carry out the rebuilding of the building in the rebuilding scenario, and within the examination period A threshold is determined from a value obtained from the difference between the maximum value of the accumulated amount and the minimum value of the accumulated amount based on the accumulated amount of expenses calculated for each unit period of More, characterized in that it and a preferred lifetime calculating unit for calculating the duration of the candidate to implement the rebuilding.

  Further, in the support system of the present invention, a predetermined examination period predetermined as a period for examining a plurality of buildings to be examined is divided into a plurality of unit periods, and any of the units within the examination period is divided into each building. A rebuilding scenario is defined that assumes rebuilding of the building under consideration during the period, and includes the cost of maintaining and rebuilding the building under consideration under the rebuilding scenario for each building A cost calculation unit for calculating the accumulated amount expected within the examination period of expenses in association with the unit period assumed to carry out the rebuilding of the building in the rebuilding scenario for each building; A value determined from the difference between the maximum value of the accumulated amount for each building and the minimum value of the accumulated amount for each building based on the accumulated amount for each building of the expenses calculated for each unit period in the period Defining a Luo threshold, according to the judgment based on the threshold value, characterized in that and a preferred lifetime calculating unit for calculating the duration of the candidate to carry out reconstruction for each of the building.

  Further, in the support system, the recommended period calculation unit adds a value obtained from the difference between the maximum value of the accumulated amount and the minimum value of the accumulated amount to the minimum value as a threshold, and performs determination based on the threshold Calculating a candidate period to carry out the rebuilding.

  Further, in the support system, the recommended period calculation unit adds a value obtained from the difference between the maximum value of the accumulated amount and the minimum value of the accumulated amount to the minimum value as a threshold, and performs determination based on the threshold Calculating the unit period obtained from the result of the step as a candidate period to carry out the rebuilding.

  Further, in the support system of the present invention, a predetermined examination period predetermined as a period for examining a plurality of buildings to be examined is divided into a plurality of unit periods, and any of the units within the examination period is divided into each building. A rebuilding scenario is defined that assumes rebuilding of the building under consideration during the period, and includes the cost of maintaining and rebuilding the building under consideration under the rebuilding scenario for each building A cost calculation unit for calculating the accumulated amount expected within the examination period of the cost for each building corresponding to the unit period assumed to carry out the rebuilding of the building in the rebuilding scenario for each building; A value is calculated from the difference between the maximum value of the accumulated amount for each building and the minimum value of the accumulated amount for each building based on the accumulated amount for each building of the expenses calculated for each unit period within the examination period Ask for A recommended period calculation unit which determines a representative value from values calculated from the differences of the plurality of buildings, and calculates a period of a candidate for rebuilding for each of the buildings by determination based on the determined representative values; And the like.

  Further, in the supporting method of the present invention, a predetermined examination period predetermined as a period for examining a building to be examined is divided into a plurality of unit periods, and the building to be considered in any of the unit periods within the examination period A rebuilding scenario is defined under the assumption that rebuilding is to be carried out, and the cumulative total of expenses expected for the maintenance and rebuilding of the building under consideration under the rebuilding scenario within the review period of the expenses within the review period. Calculating the amount corresponding to the unit period assumed to carry out the rebuilding of the building in the rebuilding scenario, and based on the accumulated amount of the expenses calculated for each unit period within the examination period A step of determining a threshold from a value obtained from the difference between the maximum value of the accumulated amount and the minimum value of the accumulated amount, and calculating the period of the candidate for performing the rebuilding by the determination based on the threshold Characterized in that to practice the, the processing including the computer.

  Further, in the program of the present invention, a predetermined examination period predetermined as a period for examining a building to be examined is divided into a plurality of unit periods, and the building of the examination object in any of the unit periods within the examination period. A rebuilding scenario is defined which assumes that a rebuilding is to be carried out, and the cumulative amount of expenses expected to be incurred within the review period of the expenses including the costs for maintaining and rebuilding the building under the rebuilding scenario. Calculating according to the unit period assumed to carry out the rebuilding of the building in the rebuilding scenario, and based on the accumulated amount of the expenses calculated for each unit period within the examination period, A threshold is determined from the value obtained from the difference between the maximum value of the accumulated amount and the minimum value of the accumulated amount, and the period based on the threshold value is calculated to calculate the period of the candidate for the rebuilding Is a program for implementation and up, to the computer support system.

  According to the present invention, it is possible to present a period suitable for implementing rebuilding within a predetermined examination period for one or more buildings to be examined.

It is explanatory drawing which shows the outline | summary of operation | movement of the assistance system concerning 1st Embodiment of this invention. FIG. 2 is a block diagram showing a configuration example of a support system 100. It is a flow chart which shows a flow of processing in support system 100 of a 1st embodiment. It is explanatory drawing which shows the example of examination period. It is explanatory drawing which shows the example of the maintenance cost of the existing building. It is an explanatory view showing an example of maintenance cost of a building after rebuilding. It is explanatory drawing which shows the example of the rebuilding scenario which implements rebuilding in a 10th year in the examination period of 30 years. It is explanatory drawing which shows the 1st example of the sum total T (y) for every rebuilding scenario. It is explanatory drawing which shows the 2nd example of the sum total T (y) for every rebuilding scenario. It is an explanatory view showing the 1st example of calculation of a candidate period. It is an explanatory view showing the 2nd example of calculation of a candidate period. It is explanatory drawing which shows the example of calculation of the candidate period in 2nd Embodiment. It is an explanatory view showing an example of a candidate period of each of a plurality of buildings. It is a flow chart which shows a flow of processing in support system 100 of a 2nd embodiment. It is explanatory drawing which shows the example of calculation of the candidate period in 3rd Embodiment. It is explanatory drawing which shows the example of calculation of the candidate period using difference (DELTA) of total sum T (y) of building 10-3 self. It is an explanatory view showing the difference of the calculation result of the candidate period in the case of using the difference Δmax of the accumulated sum T (y) of the building 10-1 and the case of using the difference Δ of the accumulated sum T (y) of the building 10-3 itself. is there. It is a flow chart which shows a flow of processing in support system 100 of a 3rd embodiment. It is explanatory drawing which shows the example of a setting of the cost information concerning a facility function, performance, and the level improvement of quality.

  Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

First Embodiment
(Overview)
FIG. 1 is an explanatory view showing an outline of the operation of the support system 100 according to the first embodiment of the present invention. The building 10 to be considered for rebuilding is, for example, an office building or the like. The support system 100 sets a predetermined examination period (for example, from the present) of 30 years for the examination target building 10. Then, from the rebuilding scenario on the assumption that the rebuilding is carried out in the first year, the rebuilding scenario on the assumption that the rebuilding is carried out in the final year of the 30th year (after 30 years from now). Create each rebuilding scenario up to That is, the support system 100 creates, for the building 10, a plurality of rebuilding scenarios in the case of changing the time of rebuilding (hereinafter, also described as “rebuild time”).
In the following description, “y year after the first year” in the examination period may be described as “y year”.

In the support system 100, the cost calculation unit 120 includes the cost including the maintenance cost (maintenance cost) of the building 10 and the rebuilding cost for rebuilding (rebuilding cost) for each rebuilding scenario in which the rebuilding time differs. Calculate the accumulated amount T (y) of expenses).
The recommended period calculation unit 130 sets the year Tmin (for example, the eighth year) with the smallest accumulated amount T (y) as the “recommended year” most suitable for rebuilding for the building 10 to be considered. Calculate In addition, based on the difference Δ between the maximum value Tmax and the minimum value of the accumulated amount T (y), the recommended period calculating unit 130 determines the year in which the accumulated amount T (y) is relatively small (for example, the sixth and seventh years). Calculate the year (hereinafter also referred to as “candidate year”) that is a candidate suitable for rebuilding in the second, ninth, and tenth years.
Then, the recommended period calculating unit 130 calculates a period including the recommended year and the candidate year as a period (hereinafter, also referred to as a “candidate period”) that is a candidate suitable for performing rebuilding. The support system 100 presents a candidate period 201 including a recommended year and a candidate year.
Thus, the support system 100 can present, for the building 10 to be considered, a period that is a candidate suitable for implementing rebuilding within a predetermined examination period.

  In addition, although the example shown in FIG. 1 shows the example which calculates the candidate period 201 of one building 10, it is not limited to this. As shown in the second and third embodiments described later, the support system 100 can calculate and present candidate periods for each of a plurality of buildings.

(Example of configuration of support system 100)
Next, a configuration example of the support system 100 will be described.
FIG. 2 is a block diagram showing a configuration example of the support system 100. As shown in FIG. As shown in FIG. 2, the support system 100 includes a control unit 101, an input / output interface 102, a rebuild scenario generation unit 110, and a storage unit 150. Further, an input / output terminal device 161 is connected to the support system 100. The input / output terminal device 161 includes a display unit 162 such as a liquid crystal display, and an input device 163 such as a mouse or a keyboard.

The control unit 101 controls each unit in the support system 100 to control the entire support system 100 to realize processing functions required for the support system 100. The input / output interface 102 is a processing unit serving as an interface with the input / output terminal device 161 connected to the support system 100.
The input device 163 is used, for example, to input data required to calculate the accumulated amount T (y) for each rebuilding scenario of the building 10. The support system 100 acquires data input from the input device 163 via the input / output interface 102 and stores the data in the storage unit 150. Further, the support system 100 outputs the information of the candidate period 201 calculated by the recommended period calculating unit 130 to the input / output terminal device 161 via the input / output interface 102 and causes the display unit 162 to display the information.

The rebuilding scenario generating unit 110 includes an expense calculating unit 120, a recommended period calculating unit 130, and a drawing unit 140.
The rebuilding scenario generation unit 110 creates a plurality of rebuilding scenarios in which the year of rebuilding is changed between the first year of the examination period (for example, 30 years) set in advance and the final year. That is, the rebuilding scenario generation unit 110 creates a plurality of rebuilding scenarios having different rebuilding times.
The expense calculating unit 120 calculates the accumulated amount T (y) of the maintenance cost of the building 10 and the rebuilding cost in the examination period for each rebuilding scenario having a different rebuilding time. The details of the method of calculating the accumulated amount T (y) for each rebuilding scenario will be described later.

The recommendation period calculation unit 130 calculates, for the building 10 to be considered, a year of Tmin having the smallest accumulated amount T (y) as a “recommended year” most suitable for rebuilding. In addition, the recommended period calculation unit 130 calculates a year with a relatively small accumulated amount T (y) as a candidate year suitable for implementing rebuilding. When calculating this candidate year, the recommended period calculation unit 130 calculates the candidate year based on the difference Δ (= Tmax−Tmin) between the maximum value Tmax and the minimum value Tmin of the accumulated amount T (y). Further, the recommended period calculating unit 130 calculates a period including the recommended year and the candidate year as a candidate period. Details of the method of calculating the candidate year and candidate period will be described later.
The drawing unit 140 generates a chart that displays the recommended year, the candidate year, the candidate period, and the like. The support system 100 displays this chart on the display unit 162. For example, the drawing unit 140 generates a chart that allows the accumulated amount T (y) to be compared year by year, corresponding to the rebuilding time, with the accumulated amount T (y) of costs for each rebuilding scenario. Generate a chart that includes information indicating the recommended year, the candidate year, and the candidate period.

In addition, the storage unit 150 includes building attribute information 151, deterioration diagnosis information 152, earthquake resistance diagnosis information 153, long-term repair plan information 154, cost information 155 for rebuilding a building, cost information 156 for maintenance of an existing building, The cost information 157 for maintaining the building after rebuilding, and the cost information 158 for improving the facility function, performance, and quality level are stored.
The pieces of information from the building attribute information 151 to the cost information 158 are information input in advance from the input device 163 of the input / output terminal device 161. The support system 100 stores each piece of information from the building attribute information 151 to the cost information 158 input from the input device 163 in the storage unit 150.

The above-mentioned building attribute information 151 is current information of the building 10, for example, land area, total floor area, age after construction, useful life of the building, and information of land and building ownership.
The deterioration diagnosis information 152 is information on the diagnosis result of the deterioration diagnosis (for example, on-site survey etc.) periodically performed on the building 10. The deterioration diagnosis information 152 includes, for example, information on building deterioration diagnosis such as durability diagnosis, deterioration diagnosis such as outer wall, equipment deterioration diagnosis, pipe deterioration diagnosis and the like.
The seismic resistance diagnostic information 153 is information on the diagnostic result of the seismic performance of the building 10. This earthquake proofing diagnosis can be performed together with the deterioration diagnosis regularly performed on the building 10.

The long-term repair plan information 154 is information of a maintenance plan of the building 10 set based on the building deterioration diagnosis information 152 and the earthquake resistance diagnosis information 153. In addition, this long-term repair plan information 154 can predict and set the future deterioration state of the building 10 based on the deterioration diagnosis information 152 and the earthquake resistance diagnosis information 153.
The cost information 155 for rebuilding the building is information on the cost for removing, designing, and newly building the building 10.
The cost information 156 for maintenance of the existing building is information on the cost required when repairing or repairing the building 10 based on the long-term repair plan information 154 described above.
The cost information 157 on maintenance of the building after rebuilding is information on the maintenance cost of a newly built building after rebuilding the building 10. An example of the cost information 157 taken to maintain the post-reconstruction building will be described later.
Each cost information explained to the front | former stage was information of the cost which takes when performing repair, repair, and rebuilding of the building 10 on the assumption that a facility function, performance, and quality are maintained. On the other hand, when carrying out repair, repair and rebuilding of the building 10, there are cases where the facility function, performance and quality are partially improved. Therefore, even in the case of partially improving the facility function, performance and quality level, it can be integrated and considered by costing the facility function, performance and quality level. The cost information 158 for improving the level of the facility function, the performance, and the quality is information obtained by converting the degree of the improvement into the amount of money when improving the level of the facility function, the performance, and the quality of the building 10. Details of the cost information 158 for improving the facility function, performance, and quality levels will be described later.

FIG. 3 is an explanatory view showing a flow of processing in the support system 100 of the first embodiment. Hereinafter, the flow of processing in the support system 100 of the present embodiment will be described with reference to FIG.
In the support system 100, processing for the building 10 to be studied is started (step S10).
When the process for the building 10 to be considered is started, the rebuilding scenario generation unit 110 sets a study period for the building 10 to be considered. The examination period is set as a period for maintaining the function of the building 10. For example, the examination period is set on a yearly basis as 30 years from the present to the future (step S20).

Subsequently, the rebuilding scenario generation unit 110 assumes that rebuilding is to be performed in the final year of the 30th year based on the rebuilding scenario in the case of performing rebuilding in the first year in the 30-year examination period. Create each rebuilding scenario up to the rebuilding scenario of. That is, the rebuilding scenario generation unit 110 creates a plurality of rebuilding scenarios in the case where the time to rebuild is changed for the building 10 (step S30).
Subsequently, the cost calculation unit 120 calculates the cost (cost) including the maintenance cost (maintenance cost) of the building 10 and the rebuilding cost (rebuilding cost) for the rebuilding for each rebuilding scenario having a different rebuilding time. The accumulated amount T (y) of the image is calculated (step S40).

Subsequently, the recommended period calculating unit 130 calculates a year in which the accumulated amount T (y) is the minimum value Tmin as a “recommended year” most suitable for implementing rebuilding (step S50).
Subsequently, the recommended period calculation unit 130 calculates the difference Δ (= Tmax−Tmin) between the maximum value Tmax and the minimum value Tmin of the accumulated amount T (y) (step S60).
Then, from the difference Δ (= Tmax−Tmin), the recommended period calculation unit 130 calculates
The threshold “Tmin + (Tmax−Tmin) × p” is calculated.
Here, p is, for example, a positive value of 1 or less such as “p = 0.2” (step S70).
Subsequently, the recommended period calculation unit 130 calculates a year whose accumulated amount T (y) is smaller than the threshold as a candidate year based on the threshold “Tmin + (Tmax−Tmin) × p” (step S80).
Subsequently, the recommended period calculating unit 130 calculates a period including the recommended year and the candidate year as a candidate period (step S90).

Subsequently, the drawing unit 140 generates a chart presenting candidate periods and the like. The support system 100 displays this chart on the display unit 162 (step S100).
After displaying the chart on the display unit 162 in step S100, the support system 100 ends the process (step S110).
Thereby, the support system 100 can present a period suitable for implementing rebuilding within a predetermined examination period for the building 10 to be examined.

(Example of examination period)
In the support system 100, the examination period is set as a “period in which the objective function of the building 10 is maintained” to be provided to a business or the like. The examination period n is defined as a period from "present" to "present + n". For example, the examination period n is 30 years.
FIG. 4 is an explanatory view showing an example of the examination period. In FIG. 4, the passage of time is shown by year in the horizontal direction, and an example of the building A to be considered, an example of the building B to be considered, and an example of the building C not to be considered in the vertical direction. And are shown side by side.

The example shown in FIG. 4 is an example in which the building 10 to be considered is a building over 40 years old within the examination period n and a building over 40 years old at present. For this reason, the buildings to be examined for the rebuilding time are a building A over 40 years old within the examination period n and a building B over 40 years old now.
On the other hand, since Building C reaches 40 years after the examination period n, it is not considered. In other words, it is reasonable to exclude the new building C, which has just been newly built at the present time, from the consideration of the rebuilding time.

(How to calculate the accumulated cost T of the rebuilding scenario)
Next, a method of calculating the total cost T of the rebuilding scenario performed by the expense calculating unit 120 will be described.
The cost calculation unit 120 calculates a cumulative amount T of costs required for repair, repair, and rebuilding that occur between the current and the review period n. In the calculation of the accumulated amount T, the maintenance cost (repair and repair cost) of the existing building 10 in the k-th year is M1 _k , the maintenance cost in the j-year after the building rebuilding is M2 _j , and the rebuilding cost is A Define as (y).
Then, assuming that the y-year in the examination period n is to be rebuilt, the accumulated maintenance cost incurred from the present (k = 1) to the last year of rebuilt (k = y-1) is

I assume.
In addition, the cost A (y) required for rebuilding is assumed to occur in the rebuilding year (assuming one year).
In addition, in the building after rebuilding, the accumulated sum of maintenance costs incurred from the year after rebuilding (j = 1) to the final year of reviewing period (j = n-y),

I assume.
Then, the expense calculation unit 120 calculates the accumulated amount T (y) of the cost for each rebuilding scenario by the following equation (3).

Here, “n: examination period (year)”, “M1 _k : maintenance cost of existing buildings in k years”, “y: rebuilding period”, “M2 _j : buildings in j years after rebuilding” The maintenance cost of
In addition, "T (y): Cumulative cost of rebuilding scenario to rebuild in y year", "A (y): rebuilding in rebuild scenario to rebuild in y year (removal) , Cost of design, new construction).

For example, FIG. 5 is an explanatory view showing an example of the maintenance cost of the existing building. The example shown in FIG. 5 is an example in which a 46-year-old existing building is targeted as a case study, the deterioration diagnosis of the target building is performed, and the accumulated amount 維持 M1 _k of maintenance costs of the existing building is calculated.
Based on the long-term repair plan information 154 stored in the storage unit 150, the cost calculation unit 120 calculates “ΣM1 _k : cumulative amount of maintenance costs of existing buildings generated from the present to the k-th year”.
In FIG. 5, the horizontal axis indicates the examination period from the present to the 30th year by _k on a yearly basis, and the vertical axis indicates the accumulated maintenance cost amount MM1 _k in the unit of “1,000 yen / m ² ” . And in FIG. 5, it is made to respond | correspond to each year k of the examination period of 30 years, and the sum total ΣM1 _k of maintenance cost is shown by the histogram.

As shown in FIG. 5, "maintenance costs M1 _k generated each year" shown by the shaded portions of the histogram occur each year. This “maintenance cost M1 _k generated each year is added to the“ total amount MM1 _k−1 to the previous year ”shown by the unshaded part of the histogram, and the new“ total amount It becomes _k . As described above, by accumulating the maintenance costs M1 _k generated each year, the accumulated amount ΣM1 _k of the maintenance costs of the existing building 10 is increased year by year. And, the accumulated amount of maintenance costs ΣM1 _k is the largest in the final year of the 30th year of the examination period.

  Moreover, FIG. 6 is explanatory drawing which shows the example of the maintenance cost of the building after rebuilding. The maintenance cost of the building after rebuilding shown in FIG. 6 is the value of the office 3000 type case 2 defined by the rough system of the document (“Life Cycle Cost of Building in 2005, Building Conservation Center General Foundation”) It is used. The maintenance cost defined by this rough estimate system is from the new construction until the 65th year, and this value is the maximum value of the examination period. In addition, in FIG. 6, although the value of office 3000 type case 2 defined by the rough estimation system of the above-mentioned document is used as a grade of repair, in addition to case 2 for office 3000 type, the required level of grade is relatively high. There are Case 1 suitable for setting conditions, and Case 3 suitable for setting conditions for setting the grade requirement level relatively low. By selecting the case that is appropriate for the repair grade, it is possible to calculate the cost according to the purpose. Moreover, the rebuilding cost A (y) mentioned above uses the value according to the building use and a scale out of the value defined by the said rough estimate system.

In FIG. 6, the horizontal axis indicates the period from the first year after rebuilding to 30 years by _j on a yearly basis, and the vertical axis indicates the cumulative maintenance cost amount MM2 _j in the unit of “1,000 yen / m ² ”. ing. And in FIG. 6, it is made to respond | correspond to each year j of the period of 30 years after rebuilding, and the sum total (SIGMA) M2 _j of maintenance cost is shown by the histogram.

As shown in FIG. 6, "maintenance costs M2 _j generated each year" shown by shaded portions of the histogram occur each year. The "maintenance costs M2 _j generated every year" are summed in the "cumulative ΣM2 _j-1 of the previous years," as indicated by the portion not hatched histogram, a new "cumulative during the year It becomes ΣM2 _j ". As described above, by accumulating the maintenance costs M2 _j generated each year, the accumulated amount MM2 _j of the maintenance costs of the building 10 after the rebuilding is increased year by year. Then, the accumulated amount of maintenance costs ΣM2 _j is the largest in the 30th year after the rebuilding.

Next, an example of the rebuilding scenario for the 46-year-old building will be described.
FIG. 7 is an explanatory view showing an example of a rebuilding scenario in which rebuilding is performed in the tenth year in a 30-year study period. In FIG. 7, the first year to the ninth year indicates the accumulated value MM1 _k from the first year to the ninth year of the “maintenance cost of the existing building” in FIG. 5.
In the 10th year, the sum of the maintenance costs from the first year to the 9th year Σ M1 _k (k = 1 to 9) and the rebuilding cost A (10) of the building,
Σ M 1 _k (k = 1 to 9) + A (10),
Is shown. The variable k in the above equation indicates the number of years elapsed from the start year of the examination period to the implementation of the rebuilding.

In addition, from the 11th year to the 30th year, the accumulated amount of costs “維持 M1 _k (k = 1 to 9) + A (10)” in the 10th year depends on the maintenance of the building after rebuilding in FIG. It shows a value obtained by adding the accumulated amount of costs MM2 _j (j = 1 to 20). The variable j represents the period elapsed from the first year after rebuilding on a yearly basis. In other words, the variable j indicates the number of years since the rebuilding implementation year. For example, rebuilding is performed in the tenth year, and the year in which the value of the variable j is 5 is 15 years after the start of the examination period.
And the accumulated amount T (10) in the 30th year of the examination period is
Σ M 1 _k (k = 1 to 9) + A (10) + M M 2 _j (j = 1 to 20),
It becomes.
And in the example of FIG. 7, the accumulated amount T (10) is about "500 thousand yen / m ² ", and this amount is the accumulated amount T (10) of the cost in the 10-year rebuilding scenario. Become.

As mentioned above, although the example of the rebuilding scenario which implements rebuilding in the 10th year was demonstrated, rebuilding time y changes from the 1st year to the 30th year. With the change of the rebuilding time y, the occurrence period of "the cost M1 _k for maintaining the existing building" and the occurrence period of the "cost M2 _{j for} the maintenance of the building after the replacement" fluctuate respectively . For this reason, the accumulated amount T (y) for each rebuilding scenario changes.

Next, with respect to the building 10 in which a certain level of maintenance is performed, an example of the fluctuation of the total sum T (y) for each rebuilding scenario when changing the rebuilding time y from the first year to the 30th year is shown. .
FIG. 8 is an explanatory view showing a first example of the accumulated amount T (y) for each rebuilding scenario.
In FIG. 8, the horizontal axis of the graph indicates the rebuilding period (after y) from the first year to the 30th year, and the vertical axis indicates the accumulated amount T in the unit of “1,000 yen / m ² ”. There is. And, in the example shown in FIG. 8, the cumulative sum T (y) for each rebuilding scenario assuming that rebuilding is performed in the y-th year is shown by a histogram corresponding to each fiscal year to be rebuilt. . Although the fixed value is used as the rebuilding cost A (y) in the example shown in FIG. 8, the rebuilding cost A (y) may be changed according to the year y in which the rebuilding is performed. .

In the first example shown in FIG. 8, the cumulative sum T (y) of the scenarios to be rebuilt in the first, seventh, and eleventh years is the smallest, and the first, seventh, and eleventh years are constructed. It shows the result that the cost can be reduced by implementing replacement. In addition, it can be seen that the cumulative sum T (y) gradually increases after the 17th year. For this reason, in the first example shown in FIG. 8, it can be seen that it is effective to carry out the replacement within 16 years if rebuilding is performed. From this, it is effective at present to extend the service life of facilities for which maintenance has been carried out, but as a result, it is necessary to draw up a building maintenance plan with a view to rebuilding in the medium term It is shown.
In this manner, the support system 100 supports the creation of a building maintenance plan that has eliminated waste. In addition, since the support system 100 presents the optimal rebuilding time for the building 10, the accuracy in creating a long-term maintenance plan for the building 10 is improved.

(Calculation of candidate period)
By the way, in the case of the first example shown in FIG. 8, in the support system 100, the years most suitable for rebuilding a building are the first year, the seventh year, and the eleventh year, and If the rebuilding is carried out before the 16th year, the results show that the cost can be reduced. That is, in the case of the example of FIG. 8, the year suitable for rebuilding a building is dispersed in a relatively wide range during the 30-year examination period. Therefore, in the year in which the building 10 is to be rebuilt, it can be selected flexibly according to the building maintenance plan, the budget plan, and the like.

However, the year suitable for rebuilding a building may be limited to a narrow period. For example, FIG. 9 is an explanatory view showing a second example of the accumulated amount T (y) for each rebuilding scenario. The example shown in FIG. 9 is an example in which the year most suitable for carrying out the rebuilding (recommended year) is the eighth year.
In the case of the example shown in FIG. 9, although rebuilding of a building is desired to be implemented in the eighth year when the cumulative sum T (y) is minimized, it may not be possible due to reasons such as budget planning. Therefore, the recommended period calculation unit 130 of the support system 100 calculates and presents candidate periods (candidate periods) suitable for implementing rebuilding.

FIG. 10 is an explanatory diagram of a first calculation example of the candidate period.
In the example illustrated in FIG. 10, the support system 100 calculates, as a recommended year for rebuilding the building 10, the eighth year in which the accumulated value T (y) is the minimum value Tmin. Further, the support system 100 calculates a candidate period suitable for implementing a rebuild.
The calculation of the candidate period is performed based on the following equation (4) based on the difference Δ (= Tmax1−Tmin1) between the maximum value Tmax and the minimum value Tmin of the accumulated amount T (y).

T (y) −Tmin <(Tmax−Tmin) × p (4),
Here, “T (y): accumulated cost in the rebuilding scenario to be rebuilt in the y-th year”, “Tmin: minimum value of the accumulated sum T (y)”, “Tmax: accumulated sum T (y) Maximum value of), "p: a constant (a positive value of 1 or less such as" p = 0.2 ")".
That is, “Tmin + (Tmax−Tmin) × p” is a threshold for calculating the candidate period. The recommended period calculation unit 130 of the support system 100 calculates a year whose accumulated amount T (y) is smaller than a threshold as a candidate year. Further, the support system 100 calculates a period including the candidate year and the recommended year as a candidate period.

  In the example shown in FIG. 10, the “cumulative sum T (8) of rebuilding scenarios for the eighth year” shown by hatching is minimized, and the eighth year is the recommended year for rebuilding. And "the accumulated sum T (y) of the sixth year, the seventh year, the ninth year, the tenth year" shown by shading with dotted patterns satisfies the relation of the formula (4), and this "the sixth year, The seventh, ninth, and tenth years are the candidate years. Then, the recommended period calculation unit 130 carries out rebuilding of a period including the recommended year (eighth year) and the candidate year (sixth, seventh, ninth, tenth year). Calculate as a suitable recommended candidate period 201.

Then, the support system 100 displays, for example, a histogram of the accumulated amount T (y) for each rebuilding scenario on the display unit 162. When displaying this histogram, the support system 100 includes a portion of the accumulated amount T (y) of the recommended year, a portion of the accumulated amount T (y) of the candidate year, and an accumulated amount T (y) of the other years. Display to distinguish the part. For example, the support system 100 displays the portion of the total sum T (y) of the recommended year (eighth year) in dark blue, and for the candidate year (sixth, seventh, ninth, tenth year). The portion of the accumulated amount T (y) is displayed in light blue. In addition, the support system 100 displays, for example, the portion of the accumulated amount T (y) in the other years excluding the recommended year and the candidate year in yellow (or gray). In addition, the portion of the accumulated amount T (y) of the candidate year (sixth, seventh, ninth, tenth year) is such that the smaller the accumulated amount T (y), the darker the color, etc. Depending on the size of (y), the color shade may be changed and displayed.
Thereby, support system 100 can present a candidate period suitable for carrying out rebuilding within a predetermined examination period in an easy-to-understand manner.

Further, for example, when the support system 100 displays the candidate period 201, the numeral “8” indicating the recommended year (eighth year) and the candidate year (sixth, seventh year, ninth year, tenth year) The numbers “6, 7, 9, 10” indicating) are displayed in blue and the numbers of other fiscal years are displayed in black. Also, for example, the support system 100 displays the numbers “6, 7, 8, 9, 10” of the candidate period 201 by enclosing them with a rectangular frame, and displays the number “8” of the recommended year by encircling a red circle. .
In addition, the method to distinguish and display the accumulated sum T (y) of the recommended year, the accumulated sum T (y) of the candidate year, and the accumulated sum T (y) of the other years is displayed by color-coding the histogram. It can be displayed by various methods. The same applies to the display method of the candidate period 201.
In addition, the recommended year, the candidate year, and the candidate period do not necessarily have to be displayed in the form of a histogram, and for example, as shown in FIG. May be

Further, although the example shown in FIG. 10 is an example in which only one candidate period 201 is calculated within the 30-year examination period, there may be cases where a plurality of candidate periods are calculated.
For example, FIG. 11 is an explanatory view of a second calculation example of the candidate period. The example shown in FIG. 11 is an example in which two candidate periods of the candidate period 201 and the candidate period 202 are calculated. Thus, the candidate period may be calculated separately in two or more.

  As a result, the support system 100 can present, as the candidate period 201, a period suitable for performing rebuilding within the predetermined examination period n for the building 10 to be examined. For this reason, the owner of the building 10 carries out the rebuilding even when it can not be implemented in the recommended year most suitable for implementing the rebuilding of the building 10 due to the facility maintenance plan and the budget plan. It is possible to flexibly select the time to carry out the rebuilding by confirming the candidate period 201 which is suitable for performing.

Second Embodiment
In the first embodiment, an example of calculating a candidate period suitable for performing rebuilding in the examination period n for one building has been described, but in the second embodiment of the present invention, candidates for a plurality of buildings are considered. An example of calculating a period will be described.
The configuration of the support system of the second embodiment is basically the same as that of the support system 100 of the first embodiment shown in FIG. However, the support system 100 of the second embodiment is different in that the cost calculation unit 120 calculates the total sum T (y) for each of the plurality of buildings for each rebuilding scenario. Further, the support system 100 of the second embodiment is different in that the recommended period calculation unit 130 calculates a candidate period suitable for implementing rebuilding for each of a plurality of buildings.

  Thus, the reason why the candidate periods for a plurality of buildings are calculated is that when the year having the smallest accumulated amount T (y) for each building is calculated as the optimum recommended year, the recommended years may overlap. In order to cope with this, in the support system 100 of the second embodiment, candidate periods suitable for rebuilding are calculated for each of a plurality of buildings.

FIG. 12 is an explanatory view showing an example of calculation of candidate periods in the second embodiment. In FIG. 12, FIG. 12 (A) shows an example of calculation of a candidate period for the building 10-1, and FIG. 12 (B) shows an example of calculation of a candidate period in the building 10-2.
In addition, although the example which calculates each candidate period is shown in FIG. 12 by making the two buildings 10-1 and the building 10-2 into an example, the buildings 10-1 which are three or more multiple buildings are shown. The candidate period may be calculated for each of the buildings 10-N (N is an integer of 3 or more).

In the building 10-1 shown in FIG. 12A, the total sum T (y) for each rebuilding scenario is a rebuilding scenario in which rebuilding is performed in the eighth year (y = 8) from the start year of the examination period. To the minimum value Tmin1. Further, the cumulative sum T (y) is the maximum value Tmax1 in the case of a rebuilding scenario in which rebuilding is performed in the 30th year (y = 30). Then, the difference Δ between the accumulated amounts T (y) for each rebuilding scenario in the building 10-1 is “Δ = Tmax1−Tmin1”.
And calculation of the year (candidate period) of a candidate about building 10-1 shown in Drawing 12 (A) is performed based on a following formula (5).

T (y) −Tmin1 <(Tmax1−Tmin1) × p (5),
Here, p is, for example, a positive value of 1 or less such as “p = 0.2”.

  And candidate period 211 of building 10-1 will be from the sixth year to the tenth year according to the above-mentioned formula (5). In addition, the eighth year, in which the accumulated amount T (y) is the smallest, is the recommended year.

  And in building 10-2 shown in FIG. 12 (B), the total amount T (y) for each rebuilding scenario is a rebuilding scenario in which rebuilding is performed in the tenth year (y = 10) from the start year of the examination period. In this case, the minimum value Tmin2 is obtained. The cumulative sum T (y) is the maximum value Tmax2 in the case of a rebuilding scenario in which rebuilding is performed in the 30th year (y = 30). And difference delta of total sum T (y) in building 10-2 serves as "delta = Tmax2-Tmin2."

  And calculation of the year (candidate period) of a candidate about building 10-2 shown in Drawing 12 (B) is performed based on a following formula (6).

T (y) -Tmin2 <(Tmax2-Tmin2) * p (6),
Here, p is, for example, a positive value of 1 or less such as “p = 0.2”.

  And candidate period 212 of building 10-2 will be from the seventh year to the 13th year by the above-mentioned formula (6). In addition, the 10th year with the smallest accumulated amount T (y) is the recommended year.

And FIG. 13 is explanatory drawing which shows the example of the candidate period of each of several buildings. In FIG. 13, the candidate period 213 in the building 10 -N is temporarily assumed to be “the 11th year to the 16th year”.
As shown in FIG. 13, the candidate period 211 of the building 10-1 is from the sixth year to the tenth year. In addition, the eighth year, in which the accumulated amount T (y) is the smallest, is the recommended year.
In addition, the candidate period 212 of the building 10-2 is the seventh to the thirteenth years. In addition, the 10th year with the smallest accumulated amount T (y) is the recommended year.
Also, the candidate period 213 of the building 10-N is from the 11th year to the 16th year. In addition, the 14th year with the smallest accumulated amount T (y) is the recommended year.

  For example, the support system 100 displays the information of the candidate period shown in FIG. 13 on the display unit 162. As a result, the support system 100 can easily present candidate periods suitable for rebuilding for each of the buildings 10-1, 10-2, ..., and 10-N. Therefore, the support system 100 can support the planning of a facility maintenance plan including rebuilding of a plurality of buildings from the building 10-1 to the building 10-N.

Moreover, FIG. 14 is a flowchart which shows the flow of the process in the assistance system 100 of 2nd Embodiment. The flow of processing in the support system 100 of the second embodiment will be described below with reference to FIG.
In the support system 100 according to the second embodiment, the process for the building 10-1 to be considered and the building 10-N is started (step S200).
Subsequently, the rebuilding scenario generation unit 110 sets a study period common to a plurality of buildings from the building 10-1 to the building 10-N. The examination period is set as a period for maintaining the functions of the buildings 10-1 to 10-N. For example, the examination period is set on a yearly basis as 30 years from the present to the future (step S210).

Subsequently, the rebuilding scenario generation unit 110 creates a rebuilding scenario when the rebuilding time is changed for each of the building 10-1 to the building 10-N in the 30-year examination period. That is, the rebuilding scenario generation unit 110 rebuilds in the final year of the 30th year from the rebuilding scenario in which rebuilding is performed in the first year for each of the buildings 10-1 to 10-N. Each rebuilding scenario up to the replacement scenario is created (step S220).
Subsequently, the cost calculation unit 120 includes the maintenance cost of the building 10 and the rebuilding cost for rebuilding for each of the rebuilding scenarios having different rebuilding times in each of the building 10-1 to the building 10-N. A cumulative amount T (y) of costs (expenses) is calculated (step S230).

Subsequently, the recommended period calculation unit 130 is most suitable for rebuilding the year in which the accumulated amount T (y) is the smallest minimum value Tmin in each of the buildings 10-1 to 10-N. Calculate as a recommended year (step S240).
Subsequently, the recommended period calculation unit 130 calculates the difference Δ (= Tmax−Tmin) between the maximum value Tmax and the minimum value Tmin of the accumulated amount T (y) in each of the buildings 10-1 to 10-N. (Step S250).

Subsequently, in each of the buildings 10-1 to 10-N, the recommended period calculation unit 130 calculates the minimum value Tmin of the total sum T (y) and the difference Δ (= Tmax−Tmin).
The threshold “Tmin + (Tmax−Tmin) × p” is calculated.
Here, p is, for example, a positive value of 1 or less such as “p = 0.2” (step S260).
Subsequently, in each of the buildings 10-1 to 10-N, the recommended period calculation unit 130 determines that the total sum T (y) is greater than the threshold based on the respective threshold “Tmin + (Tmax−Tmin) × p”. A small year is calculated as a candidate year (step S270).
Subsequently, the recommended period calculation unit 130 calculates a period including the recommended year and the candidate year as a candidate period in each of the buildings 10-1 to 10-N (step S280).

Subsequently, the drawing unit 140 generates a chart that displays candidate periods and the like in each of the buildings 10-1 to 10-N. The support system 100 displays this chart on the display unit 162 (step S290).
After displaying the chart on the display unit 162 in step S290, the support system 100 ends the process (step S300).
Thus, the support system 100 can present a period suitable for implementing rebuilding within a predetermined examination period for each of the buildings 10-1 to 10-N.

Third Embodiment
In the support system 100 according to the second embodiment, the threshold value “Tmin + (Tmax) is calculated based on the maximum value Tmax and the minimum value Tmin of the accumulated amount T (y) in each of the buildings 10-1 to 10-N. -Tmin) x p "is defined, and the candidate period is calculated for each building based on this threshold value. However, for each building, the building 10-1 to the building 10-N are compared for the cumulative sum T (y) and the maximum value Tmax of the cumulative sum T (y) and the minimum value Tmin of the cumulative sum T (y) in each building. Then, even the corresponding values may differ greatly from one building to another.
In this case, when implementing the rebuilding year of the building in a year different from the recommended year, the buildings having a large cost impact among the multiple buildings are the maximum value Tmax and the minimum value of the cumulative sum T (y). The difference Δ (= Tmax−Tmin) with the value Tmin is a large building. On the other hand, a building having a small difference Δ between the maximum value Tmax and the minimum value Tmin has little influence on the cost even if the year of implementation of the rebuilding is different from the year of recommendation.
In the support system of the third embodiment, another building is used based on the building in which the difference Δ (= Tmax−Tmin) of the accumulated amount T (y) is the largest among the plurality of buildings to be considered. An example of calculating the candidate period of

  The configuration of the support system of the third embodiment is basically the same as that of the support system 100 of the first embodiment shown in FIG. However, in the support system 100 of the third embodiment, the cost calculation unit 120 calculates the total sum T (y) for each rebuilding scenario for each of a plurality of buildings from the building 10-1 to the building 10-N. It is different. In addition, when the recommended period calculation unit 130 calculates candidate periods for each of a plurality of buildings from the building 10-1 to the building 10-N, the maximum value Tmax and the minimum value Tmin of the accumulated amount T (y) The difference is that the difference Δ (= Tmax−Tmin) is calculated on the basis of the largest building.

FIG. 15 is an explanatory view showing an example of calculation of candidate periods in the third embodiment. In FIG. 15, FIG. 15 (A) is an example of a relatively large building 10-1 such as six floors, for example, and FIG. 16 (B) is a relatively small building 10-3 such as three floors. An example of
Then, in FIG. 15A, the maximum value of the accumulated sum T (y) for each rebuilding scenario of the building 10-1 is Tmax1, the minimum value is Tmin1, and the difference Δ is “Tmax1−Tmin1”. Become.
On the other hand, in FIG. 15B, the maximum value of the total sum T (y) for each rebuilding scenario of the building 10-3 is Tmax3, the minimum value is Tmin3, and the difference Δ is “Tmax3-Tmin3”. Become.
Then, the difference Δ (= Tmax1-Tmin1) of the accumulated sum T (y) in the building 10-1 is larger than the difference Δ (= Tmax3-Tmin3) of the accumulated sum T (y) in the building 10-3. The difference Δ of -1 is the maximum difference Δmax in this example.
In addition, although the example which calculates the candidate period of the two buildings 10-1 and the building 10-2 is shown in FIG. 15, the building 10-1 to the buildings 10-N which are three or more multiple buildings are shown. A candidate period may be calculated for each of N is an integer of 3 or more.

In the example illustrated in FIG. 15, the recommended period calculation unit 130 sets “Δmax × p” as a representative value based on the difference Δmax (= Tmax1−Tmin1) of the accumulated amount T (y) of the building 10-1. Here, p is, for example, a positive value of 1 or less such as “p = 0.2”.
That is, Δmax × p is “Δmax × p = (Tmax1−Tmin1) × p”.
And when calculating the candidate period of the building 10-1 shown to FIG. 15 (A), the recommendation period calculation part 130 is based on the representative value "(DELTA) max xp" calculated from building 10-1 itself, and threshold value "Tmin1 + (DELTA) max Define xp.
The recommended period calculation unit 130 calculates, for the building 10-1, a year in which the accumulated amount T (y) is smaller than the threshold value “Tmin1 + Δmax × p” as the candidate period 221. In the example illustrated in FIG. 15A, the candidate period 221 for rebuilding the building 10-1 is five years from the sixth year to the tenth year.

On the other hand, in the case of the building 10-3 illustrated in FIG. 15B, the recommended period calculating unit 130 uses the representative value “Δmax × p” used for calculating the candidate period of the building 10-1.
Then, for the building 10-3, the recommended period calculation unit 130 calculates a year in which the cumulative sum T (y) is smaller than the threshold “Tmin3 + Δmax × p” as the candidate period 222. In the example shown in FIG. 15B, the candidate period 222 for rebuilding the building 10-3 is 15 years from the second year to the sixteenth year.

In addition, FIG. 16 is explanatory drawing which shows the example of calculation of the candidate period using difference (DELTA) of total sum T (y) of building 10-3 self. In the example shown in FIG. 16, when calculating the candidate period of the building 10-3, the threshold “Tmin3 + (Tmax3) calculated from the difference Δ (= Tmax3−Tmin3) of the accumulated sum T (y) of the building 10-3 itself This is an example in which the candidate period 223 is calculated using −Tmin3) × p ”.
In the example illustrated in FIG. 16, the candidate period 223 for rebuilding the building 10-3 is seven years from the seventh year to the thirteenth year.

And FIG. 17 shows calculation results of candidate periods when using the difference Δmax of the accumulated sum T (y) of the building 10-1 and when using the difference Δ of the accumulated sum T (y) of the building 10-3 itself. It is an explanatory view showing a difference.
As shown in FIG. 17A, using the representative value “Δmax × p” calculated from the difference Δmax (= Tmax1−Tmin1) of the accumulated sum T (y) of the building 10-1, the building 10-3 is obtained. When calculating the candidate period 222, the candidate period 222 is 15 years from the second year to the 16th year.
On the other hand, when using the numerical value “(Tmax3-Tmin3) × p” calculated from the difference Δ (= Tmax3-Tmin3) of the accumulated sum T (y) of the building 10-3 itself, the candidate period 223 starts from the seventh year. It will be seven years of the thirteenth year.

As described above, the support system 100 according to the third embodiment uses the representative value “Δmax × p” obtained from the difference Δmax of the sum T (y) of the buildings 10-1 to select the candidate period of the building 10-3. calculate. Thus, the support system 100 can set the candidate period of the building 10-3 to a wide range of periods. The same applies to the case where there are three or more buildings 10-1 to 10-N.
In the case where there are a plurality of buildings 10-1 to 10-N, the difference Δ (Tmax-Tmin) of the accumulated sum T (y) for each of the buildings 10-1 to 10-N is different, In some cases, the difference Δ of the accumulated sum T (y) of a certain building may be equal to or less than the representative value “Δmax × p”. In such a case, rebuilding of the building may be carried out at any time.

  FIG. 18 is a flowchart showing the flow of processing in the support system 100 of the third embodiment. In the flowchart shown in FIG. 18, the process from step S210 to step S240 and the process from step S280 to step S300 are the same as the flowchart of the second embodiment shown in FIG. For this reason, the same step number is attached | subjected to the step of the same processing content, and the overlapping description is abbreviate | omitted.

In step S240, the recommended period calculation unit 130 is most suitable for rebuilding the year in which the accumulated value T (y) is the smallest minimum value Tmin in each of the buildings 10-1 to 10-N. It is calculated as a recommended year (step S240).
Subsequently, the recommended period calculation unit 130 calculates the difference Δ (= Tmax−Tmin) between the maximum value Tmax and the minimum value Tmin of the accumulated amount T (y) in each of the buildings 10-1 to 10-N. . Then, the recommended period calculation unit 130 determines the largest difference Δ from the difference Δ between the accumulated amounts T (y) in each of the buildings 10-1 to 10-N, and determines the largest difference Δ as the “difference Δmax”. (Step S250A).

Subsequently, the recommended period calculation unit 130 calculates a representative value “Δmax × p” from the largest difference Δmax (step S255A).
Subsequently, in each of the buildings 10-1 to 10-N, the recommended period calculation unit 130 calculates the minimum value Tmin of the accumulated sum T (y) of each building itself and the above representative value ".DELTA.max.times.p" From this, the threshold “Tmin + Δmax × p” is calculated (step S260A).

Subsequently, in each of the buildings 10-1 to 10-N, the recommended period calculation unit 130 selects a year in which the accumulated sum T (y) is smaller than the threshold based on the respective threshold values "Tmin + Δmax × p". (Step S270A).
Subsequently, the recommended period calculation unit 130 calculates a period including the recommended year and the candidate year as a candidate period in each of the buildings 10-1 to 10-N (step S280).

Subsequently, the drawing unit 140 generates a chart that displays candidate periods and the like in each of the buildings 10-1 to 10-N. The support system 100 displays this chart on the display unit 162 (step S290).
After displaying the chart on the display unit 162 in step S290, the support system 100 ends the process (step S300).
Thereby, when the support system 100 calculates a candidate period for rebuilding a building having a small difference Δ of the accumulated sum T (y), the candidate period is set based on the difference Δ of the accumulated sum T (y) of the building itself. A wider range of candidate periods can be calculated compared to when calculating.

(Example of level improvement of facility function, performance, quality)
In addition, although the example of the above-mentioned support system 100 demonstrated the example which calculates the sum total T (y) for every rebuilding scenario based on the maintenance cost and rebuilding cost of the building 10, it is not limited to this. For example, when the cost calculation unit 120 improves the level of the facility function, performance, and quality of the building, the degree of this improvement is converted into a monetary amount, and the number of accumulated costs T (y) for each rebuilding scenario It may be calculated.

  FIG. 19 is an explanatory diagram of an example of setting of cost information for improving the level of the facility function, the performance, and the quality. For example, the support system 100 displays the table 300 illustrated in FIG. 19 on the display unit 162. The support system 100 displays that each item on the table 300 can be selected to be implemented by repair / renovation, to be implemented at the time of rebuilding a building, or not to be implemented.

Further, with regard to the item to be implemented by rebuilding, the support system 100 inputs information on the amount of increase in the rebuilding cost, which is necessary when implementing the item, to the corresponding position of the table 300 as the input device 163. Display to be able to input by. Alternatively, with regard to the item to be implemented by repair / repair, the support system 100 may obtain information on the amount of increase in maintenance cost required to implement the item and information on the implementation time of the table 300. Display to be able to input at the corresponding position.
Then, for example, when the amount of increase in cost for a certain item is input, the support system 100 determines that the item is an item to be implemented, and the item for which the amount of increase is not input is input. It is determined that the item is not implemented.
The information on the amount of money input in the table 300 of FIG. 19 and the information on the implementation time are stored in the storage unit 150 as “cost information 158 on facility function, performance, and quality”.

In FIG. 19, “introduction of energy saving device (LED illumination etc.)” in item 1-1 is, for example, information on the cost required when changing the fluorescent lamp illumination to the LED illumination.
Item 1-2 “Refreshing Room Installation” is information on the cost of equipment and fixtures required when newly installing a break room for the welfare of an office worker.
Item 1-3 “increase in storage space” is, for example, cost information required to increase the storage space for each room or for each of a plurality of rooms.

The item 2-1 “increase in electric facility capacity” is, for example, information on the cost of changing the power receiving facility or changing the distribution line, which is required when increasing the received power from the power company. Item 2-2 “Introduction of individual control of illumination” is information on the cost required when individually turning on / off the illumination device (or performing dimming control). In addition, “introduction of individual control of heating and cooling equipment” in item 2-3 is, for example, information on the cost required when performing temperature and humidity control separately for each room.
The contents and the number of the above items are not fixed, and can be set flexibly according to the form of the building 10 to be considered, the management policy of the building owner, and the like.

In the example shown in FIG. 19, item 1-1 “Introduction of energy saving equipment (LED lighting etc.)” is selected to be implemented by repair or repair, and this “introduction of energy saving equipment (LED lighting etc)” The necessary amount of money 312 and its implementation time 313 are entered at the corresponding positions in the table 300.
In addition, item 1-2 “Refreshing Room Installation” is selected to be implemented by repair and repair, and the amount 314 required for this “Refreshing Room Installation” and its implementation time 315 are shown in Table 300. Is entered at the corresponding position of.
In addition, since "the increase of a storage space" of the item 1-3 is not implemented, the information of moneys etc. is not input.

  And amount of money 312 required for "introduction of an energy saving apparatus (LED lighting etc.)" of item 1-1 is added as a number of maintenance costs of the year corresponding to the implementation time 313. Similarly, the amount of money 314 required for “setting up the refresh room” in item 1-2 is added as the number of maintenance costs for the year corresponding to the implementation time 315 thereof.

In addition, item 2-1 "increase of electric equipment capacity", item 2-2 "introduction of individual control of lighting" and item 2-3 "introduction of individual control of heating and cooling" are repair and repair. Is selected, and the amount of money required to perform them and the implementation time are respectively input to the corresponding positions in the table 300.
And when carrying out "increase of electric equipment capacity" of an item 2-1, "introduction of individual control of lighting" of an item 2-2, and "introduction of individual control of an air conditioning and heating" of an item 2-3. Each required amount of money is added as the number of maintenance costs for the year corresponding to each implementation time.

Thereby, the cost calculation unit 120 calculates the accumulated cost T (y) for each rebuilding scenario, and increases the maintenance cost required to improve the facility function, performance, and level of quality, and rebuilding. The accumulated amount T (y) can be calculated including the increase in cost.
Therefore, when calculating the cumulative amount T (y) for each rebuilding scenario, the support system 100 incorporates the cost for improving the facility function, performance, and the quality level in the cumulative amount T (y), and converts the cost into cost. It can be evaluated centrally.
In addition, when calculating the accumulated sum T (y) for each rebuilding scenario, when the long-term maintenance plan is formulated by including the cost for improving the facility function, performance, and quality level in the accumulated sum T (y). The choice of can be increased.

  The support system 100 can not only cost and evaluate the facility function, performance, and the level of quality improvement, but can also cost and evaluate other factors related to rebuilding. For example, the support system 100 can also cost and evaluate factors such as temporary facility costs and consolidation of facilities. In addition, for example, when rebuilding the building 10, the support system 100 includes an element and a managerial factor of the rebuilding cost in each case when rebuilding by itself or rebuilding jointly with other companies. It is also possible to evaluate costs.

  As mentioned above, although embodiment of this invention was described, the assistance system 100 shown in FIG. 2 has a computer system inside. Then, the process of the series of processes related to the process described above is stored in a computer readable storage medium in the form of a program, and the above process is performed by the computer reading and executing this program. Here, the computer readable storage medium refers to a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, and the like. Alternatively, the computer program may be distributed to a computer through a communication line, and the computer that has received the distribution may execute the program. The term "computer system" as used herein also includes an OS and the like.

  That is, the central processing unit such as CPU is a main storage device such as ROM or RAM for all or a part of each processing in control unit 101, input / output interface 102, and rebuild scenario generation unit 110 in support system 100. This is realized by reading out the above-mentioned program and processing information and executing arithmetic processing. Of course, each processing unit constituting the support system 100 shown in FIG. 2 may be realized by dedicated hardware.

As described above, in the support system 100 according to the above-described embodiment, the predetermined examination period n predetermined as the period for examining the building 10 to be examined is divided into year units (a plurality of unit periods). A rebuilding scenario is defined on the assumption that rebuilding of the building 10 to be considered is performed in any of the years (unit period) of the year.
Then, the cost calculation unit 120 estimates the accumulated amount T (y) within the examination period n of the cost (expense) including the cost for maintaining and rebuilding the building 10 to be examined under the rebuilding scenario, Calculated according to the year (unit period) assumed to carry out rebuilding of the building 10 in the rebuilding scenario.
The recommended period calculation unit 130 calculates the maximum value Tmax of the accumulated amount T (y) and the accumulated amount T based on the accumulated amount T (y) of costs calculated for each year (unit period) within the examination period n. The threshold value "Tmin + (Tmax-Tmin) x p" is determined from the value obtained from the difference Δ (= Tmax-Tmin) with the minimum value Tmin of (y), and based on this threshold value Calculate the period.

In the case of the support system 100 having such a configuration, there are a plurality of support systems 100 in the case where it is assumed that the building 10 is to be rebuilt in the first year of the examination period n to the case in which the rebuilding is performed in the last year. Create a rebuilding scenario for That is, the support system 100 creates a plurality of rebuilding scenarios in which the year in which rebuilding is performed on the building 10 is different.
The cost calculation unit 120 calculates the accumulated amount T (y) of the cost (cost) for maintaining the building 10 and the cost (cost) for rebuilding for each of a plurality of rebuilding scenarios in which the year of rebuilding is different. calculate.
The recommended period calculation unit 130 calculates the difference Δ (= Tmax−Tmin) between the maximum value Tmax and the minimum value Tmin of the accumulated amount T (y) based on the accumulated amount T (y) of costs calculated for each rebuilding scenario. The threshold “Tmin + (Tmax−Tmin) × p” is determined from the value obtained from the above, and the year in which the accumulated amount T (y) is smaller than the threshold is calculated as a candidate period.
Thereby, the support system 100 can present a period suitable for implementing rebuilding within a predetermined examination period for the building 10 to be examined.

Further, in the support system 100 according to the above-described embodiment, a predetermined examination period n predetermined as the period for examining the buildings 10-1 to 10-N (N is a positive integer) to be examined is divided by year (a plurality of It is divided into unit period) and it is assumed that rebuilding scenario of rebuilding target building of examination object is carried out in any year (unit period) in examination period n for every building of building 10-1 to building 10-N It is defined.
Then, the cost calculation unit 120 estimates the cost within the examination period n of the cost including the cost for maintaining and rebuilding the building under consideration under the rebuilding scenario for each of the buildings 10-1 to 10-N. The accumulated sum T (y) corresponds to the year (unit period) on which it is assumed that the building rebuilding is performed in the building 10-1 to 10-N building rebuilding scenario, and the building 10-1 to the building Calculated for each 10-N building.
The recommended period calculation unit 130 calculates the accumulated amount T (y) for each building based on the accumulated amount T (y) for each building of the cost (expense) calculated for each year (unit period) within the examination period n. The threshold "Tmin + (Tmax-Tmin) x p" is determined from the value obtained from the difference Δ (= Tmax-Tmin) between the maximum value Tmax of and the minimum value Tmin of the total sum T (y) for each building. By the determination based on, the period of the candidate of implementing rebuilding for every building of building 10-1 to building 10-N is calculated.

In the case of the support system 100 having such a configuration, it is assumed that the rebuilding scenario generation unit 110 rebuilds each of the buildings 10-1 to 10-N in the first year of the examination period n. Create multiple rebuilding scenarios from when to assuming that rebuilding will be performed in the final year. That is, the support system 100 creates a plurality of rebuilding scenarios for each of the buildings 10-1 to 10-N.
Then, the cost calculation unit 120 calculates the cost (cost) for maintenance of the building for each of a plurality of rebuilding scenarios in which the year of rebuilding is different for each of the buildings 10-1 to 10-N. Calculate the accumulated amount T (y) with the cost to be replaced (expense).
The recommended period calculation unit 130 calculates the difference Δ (= Tmax−Tmin) between the maximum value Tmax and the minimum value Tmin of the accumulated amount T (y) in each of the buildings 10-1 to 10-N. Then, in each of the buildings 10-1 to 10-N, the recommended period calculation unit 130 calculates the threshold "Tmin + (Tmax-Tmin) × p" from the value obtained from the difference Δ, and the total sum T (y) Calculate the year when is smaller than the threshold as the candidate period to carry out the rebuilding.
Thereby, the support system 100 can present a period suitable for implementing rebuilding within a predetermined examination period for each of the buildings 10-1 to 10-N.

Further, in the above embodiment, the recommended period calculation unit 130 calculates the difference Δ (= Tmax−Tmin) between the maximum value Tmax of the accumulated amount T (y) and the minimum value Tmin of the accumulated amount T (y). The value “(Tmax−Tmin) × p” is added to the minimum value Tmin to make the threshold “Tmin + (Tmax−Tmin) × p”, and the period based on the threshold is calculated to calculate the candidate period to be rebuilt.
Thus, the support system 100 can calculate the period of the candidate to be rebuilt based on the difference Δ (= Tmax−Tmin) of the accumulated amount T (y) and the minimum value Tmin.

Further, in the above embodiment, the recommended period calculation unit 130 calculates the difference Δ (= Tmax−Tmin) between the maximum value Tmax of the accumulated amount T (y) and the minimum value Tmin of the accumulated amount T (y). By adding the value “(Tmax−Tmin) × p” to the minimum value Tmin to make the threshold “Tmin + (Tmax−Tmin) × p”, the year (unit period) obtained from the result of the determination based on the threshold is rebuilt Calculated as a candidate period for implementing
Thus, the support system 100 calculates the year (unit period) of the candidate to be rebuilt on the basis of the difference Δ (= Tmax−Tmin) of the accumulated amount T (y) and the minimum value Tmin, The period including the candidate year can be set as the candidate period to carry out the rebuilding.

Further, in the support system 100 according to the above-described embodiment, a predetermined examination period n predetermined as the period for examining the buildings 10-1 to 10-N (N is a positive integer) to be examined is divided by year (a plurality of It is divided into unit period) and it is assumed that rebuilding scenario of rebuilding target building of examination object is carried out in any year (unit period) in examination period n for every building of building 10-1 to building 10-N It is defined.
Then, the cost calculation unit 120 estimates the cost within the examination period n of the cost including the cost for maintaining and rebuilding the building under consideration under the rebuilding scenario for each of the buildings 10-1 to 10-N. The accumulated sum T (y) corresponds to the year (unit period) on which it is assumed that the building rebuilding is performed in the building 10-1 to 10-N building rebuilding scenario, and the building 10-1 to the building Calculated for each 10-N building.
The recommended period calculation unit 130 calculates the accumulated amount T (y) for each building based on the accumulated amount T (y) for each building of the cost (expense) calculated for each year (unit period) within the examination period n. Determine the value from the difference Δ (= Tmax-Tmin) between the maximum value Tmax of and the minimum value Tmin of the accumulated value T (y) for each building, and determine a representative value from the value obtained from the difference Δ between multiple buildings Based on the determination based on the determined representative value, a period of a candidate for rebuilding for each of the buildings 10-1 to 10-N is calculated.

In the case of the support system 100 having such a configuration, the recommended period calculation unit 130 calculates the difference Δ (= Tmax) of the accumulated sum T (y) for each rebuilding scenario in each of the plurality of buildings 10-1 to 10-N. The maximum value is determined from −Tmin), and this maximum value is taken as “Δmax”. Then, the recommended period calculation unit 130 calculates a representative value “Δmax × p” from the difference Δmax, and based on the representative value “Δmax × p”, the buildings 10-1 to 10-N are determined. Calculate the candidate period to carry out the rebuilding every time.
Thereby, when the support system 100 calculates the period of the candidate to carry out the rebuilding of the building where the difference Δ of the accumulated amount T (y) is small, the difference Δ of the accumulated amount T (y) is based on the large building. , It is possible to calculate the period of the candidate to carry out rebuilding. For this reason, when calculating the period of a candidate for rebuilding a building with a small difference Δ of the accumulated sum T (y), the support system 100 calculates it based on the difference Δ of the accumulated sum T (y) of the building itself. A wider range of candidate periods can be calculated compared to the case.

As mentioned above, although embodiment of this invention was described, the support system 100 of this invention is not limited only to the above-mentioned illustrated example, A various change can be added in the range which does not deviate from the summary of this invention. Of course.
For example, in the support system 100 described above, the examination period n is set on a yearly basis, and the calculation of the accumulated sum T (y) of the rebuilding scenario, the calculation of the candidate period, etc. I will not. For example, the setting of the examination period n, the calculation of the accumulated amount T (y) of the rebuilding scenario, the calculation of the candidate period, and the like may be performed on a monthly basis, a half year basis, or a multiple year basis.

  In the support system 100 described above, the examination and the judgment are performed under the common conditions determined in advance through the period determined as the examination period n. However, a plurality of periods determined as the examination period n are described. The conditions of determination may be changed for each divided period by dividing into periods. For example, it may be divided into a target period of the mid-term plan and a period after the mid-term plan ends. In this case, in the target period of the medium-term plan, it is judged on the condition that the matters related to the rebuilding period and the rebuilding period are embodied in the plan execution, and in the period after the end of the mid-term plan, the range selected as the rebuilding candidate period Set the condition so that it can be selected by giving width to. As a more specific example, the five years set as the target period of the mid-term plan show the rebuilding candidate period as a specific year, and the period after the end of the mid-term plan is a period of five years It is set to be able to select which of the rebuilding candidate periods is included in which. The above example is also an example.

10, 10-1, 10-2, 10-3, 10-N ... building,
100 ··· Support system, 110 ··· Reconstruction scenario generation unit,
120: cost calculation unit 130: recommended period calculation unit 140: drawing unit
150: storage unit 161: input / output terminal device 162: display unit

Claims (7)

It is assumed that a predetermined examination period predetermined as a period for examining a building to be examined is divided into a plurality of unit periods, and rebuilding of the building to be considered is performed in any of the unit periods within the examination period. Replacement scenario is defined, and the cumulative amount of expenses, including the cost for maintaining and rebuilding the building under consideration under the rebuilding scenario, within the reviewing period is considered in the rebuilding scenario. An expense calculation unit that calculates the unit period corresponding to the unit period assumed to carry out the rebuilding of the building;
A threshold is determined from a value obtained from the difference between the maximum value of the accumulated amount and the minimum value of the accumulated amount based on the accumulated amount of expenses calculated for each unit period within the examination period, and A recommended period calculation unit for calculating a period of a candidate to carry out the rebuilding based on the determination based on
A support system comprising: A predetermined examination period predetermined as a period for examining a plurality of buildings to be examined is divided into a plurality of unit periods, and rebuilding of the buildings to be examined in any of the unit periods within the examination period is performed for each building. It is defined that a rebuilding scenario is assumed to be carried out, and it is expected within the reviewing period of the cost including the cost of maintaining and rebuilding the building under consideration under the rebuilding scenario for each building. A cost calculation unit which calculates a cumulative amount for each building in correspondence with a unit period assumed to carry out the rebuilding of the building in the rebuilding scenario for each building;
Calculated from the difference between the maximum value of the accumulated amount for each building and the minimum value of the accumulated amount for each building based on the accumulated amount of the expenses calculated for the building for each unit period within the examination period A recommended period calculation unit which determines a threshold value from the calculated value and calculates a period of a candidate for rebuilding for each of the buildings by determination based on the threshold value;
A support system comprising: The recommendation period calculation unit
A value obtained from the difference between the maximum value of the accumulated amount and the minimum value of the accumulated amount is added to the minimum value to be a threshold, and the period based on the threshold is calculated to calculate the period of the candidate to be rebuilt The support system according to claim 1 or 2, characterized in that. The recommendation period calculation unit
The value obtained from the difference between the maximum value of the accumulated amount and the minimum value of the accumulated amount is added to the minimum value as a threshold, and the unit period obtained from the result of the determination based on the threshold is rebuilt The support system according to any one of claims 1 to 3, wherein the support system is calculated as a candidate period to carry out. A predetermined examination period predetermined as a period for examining a plurality of buildings to be examined is divided into a plurality of unit periods, and rebuilding of the buildings to be examined in any of the unit periods within the examination period is performed for each building. It is defined that a rebuilding scenario is assumed to be carried out, and it is expected within the reviewing period of the cost including the cost of maintaining and rebuilding the building under consideration under the rebuilding scenario for each building. A cost calculation unit which calculates a cumulative amount for each building in correspondence with a unit period assumed to carry out rebuilding of the building in the rebuilding scenario for each building;
From the difference between the maximum value of the accumulated amount for each building and the minimum value of the accumulated amount for each building based on the accumulated amount for each building of the expenses calculated for each unit period within the examination period To determine the representative value from the value obtained from the difference between the plurality of buildings, and by determining based on the determined representative value, calculating the recommended period for calculating the candidate period for rebuilding for each building Department,
A support system comprising: It is assumed that a predetermined examination period predetermined as a period for examining a building to be examined is divided into a plurality of unit periods, and rebuilding of the building to be considered is performed in any of the unit periods within the examination period. Replacement scenario is defined, and the cumulative amount of expenses, including the cost for maintaining and rebuilding the building under consideration under the rebuilding scenario, within the reviewing period is considered in the rebuilding scenario. Calculating corresponding to the unit period assumed to carry out rebuilding of the building;
A threshold is determined from a value obtained from the difference between the maximum value of the accumulated amount and the minimum value of the accumulated amount based on the accumulated amount of expenses calculated for each unit period within the examination period, and Calculating a period of a candidate to carry out the rebuilding according to the determination based on
A computer-implemented method comprising: It is assumed that a predetermined examination period predetermined as a period for examining a building to be examined is divided into a plurality of unit periods, and rebuilding of the building to be considered is performed in any of the unit periods within the examination period. Replacement scenario is defined, and the cumulative amount of expenses, including the cost for maintaining and rebuilding the building under consideration under the rebuilding scenario, within the reviewing period is considered in the rebuilding scenario. Calculating corresponding to the unit period assumed to carry out rebuilding of the building;
A threshold is determined from a value obtained from the difference between the maximum value of the accumulated amount and the minimum value of the accumulated amount based on the accumulated amount of expenses calculated for each unit period within the examination period, and Calculating a period of a candidate to carry out the rebuilding according to the determination based on
A program for causing a computer of a support system to execute.

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