JP2013134671A - Construction system - Google Patents

Abstract

The present invention provides an architectural system capable of finding an improvement point that improves the value of a building while easily reviewing an estimate created by accumulating costs.
SOLUTION: Estimating means 20 reads attribute information for each element of the inputted building from building element information storage section 31, reads standard price information corresponding to the inputted attribute from expense information storage section 32, and reads it. The estimated price is calculated for each element of the building from the standard price information and stored in the cost information storage unit 32 and displayed on the display unit 12, and the review unit 21 stores the attribute stored in the building element information storage unit 31. Is changed, the estimated unit 20 calculates the estimated amount after the change, stores the changed part and the estimated amount after the change in the history information storage unit 33, and displays the change history and the changed amount in the display unit 12. Display the estimated amount.
[Selection] Figure 2

Description

  The present invention relates to a building system used at the stage of designing and estimating when building a building, and more particularly, to a building system that appropriately reviews an estimate created by accumulating expenses to reduce costs.

  When building a building such as a house, first, the basic design is performed after selecting the floor area, number of floors, structure, building materials, and the like. In addition, the cost for construction is estimated by accumulating individual costs such as members constituting the building and construction costs. The client of the construction looks at the result of the estimate, and if it is within the budget, it proceeds with the construction as it is, and if it exceeds the budget, it will consider reducing one of the costs, etc. .

  In building construction, the foundations, exterior walls, sashes, roofs, equipment, and other components that make up the building are combined, so if you know the general price of each component, add them together Thus, an estimated amount serving as a reference can be calculated. On the other hand, in the construction shop that is the construction company, there is a slight difference in the cost of each component, and there is also a difference in the construction cost, so the estimated amount for the construction of the building consisting of the same component was also different. It will be a thing.

  In this way, since the cost required for construction differs for each contractor, it is preferable to make an estimate from as many contractors as possible, but it is troublesome to take an estimate one by one. The standard estimated amount is often unknown to general clients, so it is difficult to construct at an appropriate cost.

  Therefore, a system is known in which an estimated amount serving as a reference is calculated based on the component selected by the client, and the estimated amounts from a plurality of installers are compared and displayed. As such a system, for example, there is a system described in Patent Document 1.

Japanese Patent No. 3208133

  In the conventional system that compares the estimated amount for the building, simply display the estimated amount from the base and the estimated amount from multiple contractors, and use it as a reference for selecting the contractor. It was not a system that could be done until the examination. For this reason, if the estimated amount exceeds the budget, it is necessary to re-examine the components that make up the building from the beginning, and have the estimate be made again, making the procedure complicated.

  In addition, what changes were made for each part was not necessarily presented in an organized form, so as the changes were repeated, various information became complicated and the basic design of the building to be constructed was confused. It was also a cause.

  From the viewpoint of the value of the building to be constructed, the value (V) is expressed as the function (F), that is, the amount of utility obtained, divided by the cost (C), that is, the amount of expense to be paid. In order to increase the value (V) of the building, three methods are conceivable. The first is a method of improving value (V) by reducing cost (C). The second is a method of improving the value (V) by increasing the function (F). The third is a method of improving the value (V) by increasing the function (F) and decreasing the cost (C).

  In this way, balancing function and cost is important for improving the value of a building. Here, since the cost is an amount, it can be easily expressed as a number. On the other hand, the function includes subjective values such as appearance design and beauty in addition to the function and work at the time of use, and therefore it is difficult to objectively quantify it. For this reason, it is usually difficult to evaluate the value numerically.

  Therefore, when the budget is exceeded, each part is reviewed, but the cost is simply reduced, and the cost and the function are often lowered. On the other hand, a system for finding an improvement point for making a high-quality building at a lower price has been demanded.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a building system capable of finding an improvement point that improves the value of a building while easily reviewing an estimate created by accumulating costs. To do.

In order to solve the above-mentioned problems, an architectural system according to the present invention is an architectural system including an estimation unit that estimates a cost required for building a building, and a review unit that reviews the cost calculated by the estimation unit. ,
A cost information storage unit for storing standard price information corresponding to attributes selectable for each element constituting the building;
A building element information storage unit for storing attribute information for each element of the input building;
A cost information storage unit for storing the estimated cost for each element of the building;
A history information storage unit for storing history information in which the attribute is changed;
Display means for displaying estimated cost and history information;
With
The estimation means reads the attribute information for each element of the input building from the building element information storage unit, reads the standard price information corresponding to the input attribute from the cost information storage unit, and reads the read standard price Calculate the estimated amount for each element of the building from the information and store it in the cost information storage unit, and display on the display means,
The reexamination unit causes the estimation unit to calculate an estimated amount after the change every time the attribute stored in the building element information storage unit is changed, and stores the changed portion and the estimated amount after the change in the history information storage. And displaying the change history and the estimated amount after the change on the display means.

  Further, the building system according to the present invention is characterized in that the review means further displays a difference between estimated amounts before and after the change on the display means.

  Further, in the building system according to the present invention, the reexamination means stores the changed difference of the attribute in the history information storage unit, the attribute before the change stored in the building element information storage unit, and the The modified attribute is obtained from the difference between the attributes stored in the history information storage unit.

Furthermore, the building system according to the present invention includes a coefficient information storage unit that stores a coefficient for multiplying an estimated amount calculated from the standard price information by an amount corresponding to an attribute of an element constituting the building;
A coefficient setting means for setting the coefficient;
The estimation means calculates a final estimated amount by multiplying an estimated amount calculated from the read standard price information for each element of the building by a coefficient read from the coefficient storage information unit, and the cost information While being memorize | stored in a memory | storage part, it displays on the said display means, It is comprised.

And the building system which concerns on this invention memorize | stores the information input about each item of the constraint condition with respect to the building which it is going to build, the problem at the time of building, and the possibility of the wrinkle generation after building construction A function evaluation information storage unit,
An element corresponding to the constraint condition for the input building, a problem at the time of building, and a possibility of the occurrence of wrinkles after building the building is extracted, and an attribute alternative means for the extracted element is used as the building. It further comprises a function evaluation review unit that reads out from the element information storage unit and displays it on the display unit.

  According to the building system of the present invention, the estimation means reads the attribute information for each element of the input building from the building element information storage unit, and the standard price information corresponding to the input attribute from the cost information storage unit. The estimated amount is calculated for each element of the building from the read standard price information and stored in the cost information storage unit, and is displayed on the display unit. The review unit has the attribute stored in the building element information storage unit. Each time it is changed, the estimation unit calculates the estimated amount after the change, stores the changed part and the estimated amount after the change in the history information storage unit, and displays the change history and the estimated amount after the change on the display unit. By displaying it, it is possible to easily grasp the change in cost while changing the attributes of the building once the estimate is constructed, and it is possible to easily review the cost balance and maximize the value of the building. Can.

  Further, according to the building system according to the present invention, the review means can easily grasp the difference in costs before and after the attribute change by further displaying the difference in the estimated amount before and after the change on the display means, and the cost balance Can be made easier.

  Furthermore, according to the building system according to the present invention, the review means stores the difference between the changed attributes in the history information storage unit, the pre-change attribute stored in the building element information storage unit, and the history information storage. By obtaining the changed attribute from the attribute difference stored in the section, the state before and after the change can be reproduced in any direction only by the difference in the attribute, and the storage space can be saved. The processing can be simplified.

  Furthermore, according to the building system of the present invention, the estimating means multiplies the estimated amount for each element of the building calculated from the read standard price information by the coefficient read from the coefficient storage information section, and finally By calculating the estimated amount, storing it in the cost information storage unit, and displaying it on the display means, it is possible to respond to changes in the cost due to the situation of the site and construction method only by changing the coefficient, and change the cost information etc. Since it is not necessary to do so, the estimation work can be simplified.

  Then, according to the building system according to the present invention, the elements corresponding to the input constraint conditions, the problems in building, and the possibility of wrinkles after building are extracted, and the extracted elements By further providing a function evaluation examination unit that reads out the attribute substitution unit from the building element information storage unit and displays it on the display unit, an element substitution unit that greatly affects the function of the building is presented. It is possible to find improvement points that improve value and to efficiently review the cost balance.

It is a whole block diagram of the building system in this embodiment. It is a block diagram of an estimation system among building systems. It is a flowchart at the time of performing estimation and reexamination. It is a figure showing the change history of an attribute. It is a figure showing the relationship between the element which comprises the building after an attribute change, and an attribute. It is a figure showing the difference of the change of the attribute in FIG. 4 and FIG. It is an example of a display screen of an estimate including a change history. It is a flowchart of functional evaluation examination.

  Embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, the whole block diagram of the building system in this embodiment is shown. The building system of this embodiment can estimate the cost when building a building, present it, and then review the balance of the cost to optimize the cost. The building system can be accessed from the manager who operates the system, the customer who is the building owner, the architect who designs the building, and the construction shop who performs the construction.

  As shown in FIG. 1, the building system of this embodiment includes an estimation system 1 that estimates costs, a management system 2 that collectively manages information about customers, architects, construction companies, and the like, and a terminal And an authentication server 3 that performs authentication for access, and is configured to be accessible from the customer terminal 4, the architect terminal 5, the manager terminal 6, and the construction shop terminal 7 via the Internet 8. . In the present embodiment, the estimation system 1 will be described in detail.

  In FIG. 2, the block diagram of the estimation system 1 is shown. The estimation system 1 includes a processing unit 10 that performs various processes, a storage unit 11 that stores data, a display unit 12 that displays an estimate and a history, and an input unit 13 that inputs data. ing. Each of these means can be realized by a general computer, and the operation of this system can be realized by a computer program.

  In the estimation system 1, a building is a set of elements, and the elements are defined by a plurality of attributes. An element describes the contents of a property such as a floor, a roof, and a unit (room) constituting a building. Use attributes that represent parts that are part of the element, such as walls, floors, and ceilings, and those that are expressed numerically, such as area and length. There are those expressed by the code number of the member. In the estimation system 1, the cost of each element can be calculated based on the input attribute data, and the cost for building the building can be calculated by adding them together.

  The processing unit 10 constituting the estimation system 1 includes an estimation unit 20 that calculates the cost from the attribute information input for each element of the building, and a review unit 21 that reviews the cost calculated by the estimation unit 20. I have. In calculating the cost, the standard price is multiplied by a coefficient such as a loss rate. A coefficient setting means 22 for setting the coefficient is provided in the processing means 10. Further, when the review unit 21 reviews the cost, the processing unit 10 is provided with a function evaluation review unit 23 that extracts an element to be reviewed and presents an alternative unit for the attribute of the extracted element. .

  The storage means 11 constituting the estimation system 1 stores a cost information storage unit 30 that stores standard price information corresponding to attributes that can be selected for each element of the building, and attribute information for each input element of the building. A building element information storage unit 31, a cost information storage unit 32 that stores the estimated cost for each building element, and a history information storage that stores history information about attribute changes made by the review means 21 A unit 33, a coefficient information storage unit 34 for storing the coefficients set by the coefficient setting unit 22, and a function evaluation information storage unit 35 for storing information necessary for extracting elements to be reviewed by the function evaluation review unit 23 have.

  Next, the flow for estimating and reviewing the cost of a building will be described. FIG. 3 shows a flowchart for estimating and reviewing the cost of a building. First, the basic structure regarding a building is input from the input means 13 (S1). Items related to the basic structure of the building include the structure of the building such as a wooden structure or a steel structure, floor height, floor area, perimeter, floor plan, and the like. For example, elements such as foundations, outer walls, roofs, and entrances are indispensable for any building, but stairs are necessary only when the building has two or more floors, and the number of rooms, windows, etc. The number of openings is also an element that varies depending on the basic configuration. The estimation means 20 extracts elements necessary for the basic structure related to the input building (S2).

  Next, an attribute is input about each element required for a building (S3). In an actual building, the elements that comprise this include foundations, exterior walls, roofs, insulation, interiors, stairs, exterior and interior openings such as doors and windows, verandas, and equipment. Therefore, a building composed of two units and three interiors will be described below. FIG. 4 shows a diagram showing the relationship between elements and attributes constituting the building.

  In FIG. 4, elements surrounded by a double line are elements constituting the building, and here, unit A, unit B, interior X, interior Y, and interior Z are elements. The unit A is set with four attributes: name, X-axis dimension, Y-axis dimension, and ceiling height. Among the attributes of unit A, the name is “living room”, and the other attributes are expressed by numerical values. The unit B is also set with four attributes: name, X-axis dimension, Y-axis dimension, and ceiling height.

  The interior X is one of the interiors for the unit A, and four attributes of unit, part, finish, and ground are set as attributes. These are represented by characters in FIG. 4, but are managed by code numbers on the system. Interior X constitutes the interior of the floor of the living room as represented by the attribute. The interior Z is also one of the interiors for the unit A, and similarly, four attributes of unit, part, finish, and ground are set as attributes. The interior Z constitutes the interior of the living room wall as represented by the attribute. The interior Y is one of the interiors for the unit B, and four attributes of unit, part, finish, and ground are set as attributes. The interior Y constitutes the interior of the toilet ceiling as represented by the attribute.

  As for these attributes, the numerical values are input for those represented by numerical values, and the other attributes are selected and input from a plurality of options. For example, for the interior X composing the living room floor, a plurality of options are presented as finishing and grounding, and in FIG. 4, the solid flooring t15 is selected for finishing, and the plywood t24 is selected for the grounding. ing.

  In this way, each element is represented by a plurality of attributes, but the elements are further structured and a building is formed as a whole. Each of these attributes is input in S3. The input attributes are stored in the building element information storage unit 31 of the storage unit 11 in pairs of attribute names and values (S4). The building element information storage unit 31 is implemented by a data structure of a hash table.

  When the attribute is input and stored, the estimating unit 20 calculates the cost for each element from the attribute (S5). Among elements, such as unit A and unit B, price information per unit dimension is stored in the cost information storage unit 30 for elements defined by attributes including dimensions. In addition, for elements defined by attributes selected and input from a plurality of options such as interior X, interior Y, and interior Z, price information serving as a reference is stored in the cost information storage unit 30 for each option. It is remembered.

  For each element, the estimation unit 20 reads the standard price information corresponding to the input attribute from the cost information storage unit 30, and calculates the cost of the element by multiplying the standard price information by the size and number. Further, the estimation unit 20 reads a coefficient corresponding to the attribute from the coefficient information storage unit 34, and calculates the final cost by multiplying the estimated cost by the coefficient. After calculating the costs for all the elements, the costs required for building the building can be calculated by adding them together.

  The coefficient stored in the coefficient information storage unit 34 regulates the ratio of extra material due to losses in the building process, etc., and this can change depending on the site conditions and construction method. is there. In this embodiment, after calculating the cost based on the standard price information, the final estimated amount is calculated by multiplying the coefficient, and the coefficient can be easily changed by the coefficient setting means 22. It is possible to calculate the estimated amount according to the situation without changing the standard price information.

  When the cost is calculated, the estimation unit 20 displays the estimation information on the display unit 12 (S6). The user confirms the estimate information, performs the function evaluation study (S7), and determines whether or not to review the attribute (S8). The function evaluation study in S7 will be described in detail later. If the user is satisfied with the estimate in S8, the review is not performed and the flow ends.

  When reviewing, the attribute is first changed (S9). Of the attributes input in S3, the attribute is re-input for the portion to be reviewed, and the input attribute is stored in the building element information storage unit 31 by the review means 21. When this attribute is changed, the difference before and after the change is stored in the history information storage unit 33 (S10).

  FIG. 5 is a diagram showing the relationship between elements and attributes that make up a building after changing the attributes. Here, in S9, the X-axis dimension of the unit A is changed from 5,460 mm to 6,500 mm, the finish of the interior Y, the vinyl cloth to the plastered wall, and the base of the interior Z from the plaster board t12.5 It is assumed that the attribute has been changed for each plywood.

  FIG. 6 is a diagram showing the difference in attribute change between FIG. 4 and FIG. The difference between the state before the change of the attribute and the state after the change of the attribute can be expressed as a change in the value of the attribute as shown in FIG. In the history information storage unit 33, the difference information of FIG. 6 converted into a hash table and serialized is stored in a column of a table with no capacity limitation. The history information storage unit 33 also has a change date and time in the table column, and the change date and time can be rearranged in the order of the change.

  When the attribute is changed and the difference from the previous change is stored, the review unit 21 derives the changed attribute (S11). The attribute after change can be derived by applying the difference stored in the history information storage unit 33 to the attribute before change stored in the building element information storage unit 31. In the information stored in the history information storage unit 33, the inverse element of the difference can be obtained by switching the value before the change and the value after the change, and the inverse element of the difference is applied to the value after the change. By doing so, it is possible to return the attribute after the change to the attribute before the change.

  The review unit 21 calculates the cost for each element based on the changed attribute (S12). The cost calculation here is the same as that performed in S5. After calculating the cost, the review unit 21 displays the estimate information and the change history on the display unit 12 (S13).

  FIG. 7 shows an example of an estimate display screen including a change history. The display of the estimated information and the change history on the display means 12 can be various. For example, as shown in FIG. 7, the estimated information displays the amount for each element and the estimated amount of the entire building. Is displayed. In the change history, items of change are displayed in order along the date of change, and the attributes before and after the change, the amount of the element after the change, and the difference before and after the change are displayed. In this way, by displaying the change history information together with the estimate information, it is possible to list the impact on the cost due to the review of the attributes, and it is possible to easily consider the cost of the construction.

  When the estimate information and the change history are displayed, the function evaluation review of S7 is performed again. If further review is necessary, the steps of S9 to S13 are repeated, and if the review is unnecessary, the flow ends.

  Next, the function evaluation study which is S7 in FIG. 3 will be described. FIG. 8 shows a flowchart of the function evaluation study. In the functional evaluation study, we focused on three points: constraints on the building to be built, problems in building, and the possibility of wrinkles after building, and extracted the corresponding elements for each. Consider reviewing the cost of alternatives.

  First, a constraint condition for a building is input from the input means 13 (S7-1). Restrictions on buildings include natural conditions, site conditions, design conditions, order conditions, legal conditions, etc., and each condition is more detailed. There may be problems such as whether or not there is a problem in carrying in or carrying in materials, or whether or not there is a problem in the adjacent state with the neighboring house. Each of these items is associated with any one or a plurality of elements constituting the building. In the input of the constraint condition, whether or not each item corresponds to the building to be built is input.

  Moreover, the problem at the time of building is input from an input means (S7-2). Problems in construction are roughly divided into management items and resource items. Management items are related to quality, cost, and construction period, and resource items are related to labor, material machinery, construction methods, and inspections. Each of these items is also associated with any one or a plurality of elements constituting the building. Whether or not each item is applicable in the building to be built even if the problem is input.

  Subsequently, an input is made for an assumed bag (S7-3). There are two types of fences that are assumed for buildings: one that is assumed for each element, and one that is assumed from the construction method and overall structure. For each element, there is a possibility that water leakage or thermal cracking may occur in the foundation, outer wall, roof, or external opening. Each of these items is also associated with any one or a plurality of elements constituting the building. Whether or not each item is applicable in the building to be built even if it is assumed to be input.

  Whether or not each item is applicable to the restrictions on these buildings, the problems in building, and the assumed traps are determined according to different circumstances for each building to be built. . Moreover, in this embodiment, although input is performed in the order of S7-1 to S7-3, these three inputs may be performed in any order. These input items are stored in the function evaluation information storage unit 35 by the function evaluation review unit 23.

  After inputting the constraints on the building, the problems in building, and the assumed traps, the function evaluation review unit 23 extracts corresponding elements associated with these (S7-4). The elements to be extracted can be additionally input together with the elements associated with the respective items when there are circumstances specific to the building to be built.

  After extracting the element, the function evaluation review unit 23 extracts an alternative unit for the element (S7-5). As described above, a plurality of attributes are set for one element, and the attributes include those that can be selected from a plurality of options. The function evaluation review unit 23 extracts another attribute that can be selected for the target element.

  And the function evaluation examination means 23 calculates the expense at the time of selecting the alternative means for every element (S7-6). The cost calculation here is performed in the same manner as S5 performed by the estimation means 20. When the cost is calculated, the function evaluation review unit 23 displays the estimates before and after selecting the alternative unit on the display unit 12 (S7-7).

  Factors corresponding to constraints on buildings, problems in construction, and items entered as assumed traps greatly affect functions that affect the value of buildings. Therefore, by examining alternative means for the elements extracted in S7-5 and balancing the cost and function, it is possible to maximize the value of the building while suppressing costs. Based on the result examined through this flow, it is possible to determine whether or not to review the attribute in S8.

  Although the embodiment of the present invention has been described above, the application of the present invention is not limited to this embodiment, and can be applied in various ways within the scope of its technical idea.

DESCRIPTION OF SYMBOLS 1 Estimating system 2 Management system 3 Authentication server 4 Customer terminal 5 Architect terminal 6 Manager terminal 7 Contractor terminal 8 Internet 10 Processing means 11 Storage means 12 Display means 13 Input means 20 Estimating means 21 Reviewing means 22 Coefficient setting means 23 Functional evaluation examination means 30 Cost information storage unit 31 Building element information storage unit 32 Cost information storage unit 33 History information storage unit 34 Coefficient information storage unit 35 Function evaluation information storage unit

Claims (5)

In a building system comprising an estimating means for estimating the cost required for building a building and a reviewing means for reviewing the cost calculated by the estimating means,
A cost information storage unit for storing standard price information corresponding to attributes selectable for each element constituting the building;
A building element information storage unit for storing attribute information for each element of the input building;
A cost information storage unit for storing the estimated cost for each element of the building;
A history information storage unit for storing history information in which the attribute is changed;
Display means for displaying estimated cost and history information;
With
The estimation means reads the attribute information for each element of the input building from the building element information storage unit, reads the standard price information corresponding to the input attribute from the cost information storage unit, and reads the read standard price Calculate the estimated amount for each element of the building from the information and store it in the cost information storage unit, and display on the display means,
The reexamination unit causes the estimation unit to calculate an estimated amount after the change every time the attribute stored in the building element information storage unit is changed, and stores the changed portion and the estimated amount after the change in the history information storage. The building system is characterized in that the change history and the estimated amount after the change are displayed on the display means.   The building system according to claim 1, wherein the review unit further causes the display unit to display a difference between estimated amounts before and after the change.   The reexamination means stores the changed difference of the attribute in the history information storage unit, the attribute before change stored in the building element information storage unit, and the attribute stored in the history information storage unit The building system according to claim 1 or 2, wherein the attribute after change is obtained from the difference between the two. A coefficient information storage unit for storing a coefficient for multiplying an estimated amount calculated from the standard price information by an amount corresponding to an attribute of an element constituting the building;
A coefficient setting means for setting the coefficient;
The estimation means calculates a final estimated amount by multiplying an estimated amount calculated from the read standard price information for each element of the building by a coefficient read from the coefficient storage information unit, and the cost information The building system according to claim 1, wherein the building system is stored in a storage unit and displayed on the display unit. A function evaluation information storage unit that stores information entered for each item, such as constraints on the building to be built, problems in building, and the possibility of wrinkles after building,
An element corresponding to the constraint condition for the input building, a problem at the time of building, and a possibility of the occurrence of wrinkles after building the building is extracted, and an attribute alternative means for the extracted element is used as the building. The building system according to any one of claims 1 to 4, further comprising a function evaluation review unit that reads from an element information storage unit and displays the function information on the display unit.

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