Pile specification recommendation system and program

Abstract

To suitably grasp a desired pile specification.SOLUTION: A pile specification recommendation system includes a design condition acquisition unit that acquires a design condition determined for each construction project of a pile, and a pile specification output unit that outputs one or more pile specifications determined according to a construction cost from among a plurality of pile specifications narrowed down according to the design condition acquired by the design condition acquisition unit.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a pile specification recommendation system and program. [Background technology]

[0002] The cost required for constructing piles varies depending on the type of piles to be constructed, the number of piles, the number of workers required for construction, etc. Therefore, the cost has been estimated for each pile construction project. Patent Document 1 discloses a technology for estimating the cost required for construction by inputting the results of a boring survey and pile specifications such as the diameter and thickness of the steel pipe of the pile. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-351941 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when using the technology described in Patent Document 1 to identify pile specifications that minimize construction costs, it is necessary to input pile specifications, etc. multiple times in a brute-force manner, record each displayed estimated amount, and then compare them, which is a time-consuming process.

[0005] The present invention has been made in consideration of the above points, and aims to provide a technique that allows desired pile specifications to be appropriately grasped. [Means for solving the problem]

[0006] One aspect of the present invention is a pile specification recommendation system having a design condition acquisition unit that acquires design conditions determined for each pile construction project, and a pile specification output unit that outputs one or more pile specifications determined according to construction costs from among multiple pile specifications narrowed down according to the design conditions acquired by the design condition acquisition unit.

[0007] In addition, in one aspect of the present invention, the pile specification recommendation system further has a pile specification range acquisition unit that acquires a range of pile specifications selected from a population classified according to pile specifications, and the pile specification output unit outputs one or more pile specifications determined according to construction costs from among the multiple pile specifications further narrowed down according to the range acquired by the pile specification range acquisition unit.

[0008] In addition, in one aspect of the present invention, the pile specification recommendation system includes a correspondence relationship acquisition unit that acquires the correspondence relationship between design conditions and pile specifications that conform to the design conditions, and the pile specification output unit outputs one or more pile specifications that are determined based on construction costs from among multiple pile specifications that have been further narrowed down based on the correspondence relationship acquired by the correspondence relationship acquisition unit.

[0009] In addition, in one aspect of the present invention, the construction cost items include construction expenses and the number of piles to be constructed, and the pile specification output unit outputs pile specifications determined according to the low construction costs and pile specifications determined according to the small number of piles separately and independently.

[0010] In addition, in one aspect of the present invention, the pile specification recommendation system further includes a customer information acquisition unit that acquires customer information in which an identifier that identifies each customer is associated with the construction cost items determined for each customer, and an identifier acquisition unit that acquires the customer's identifier based on user operation, and the pile specification output unit outputs one or more pile specifications from among multiple pile specifications that are determined according to the construction cost items associated with the identifier acquired by the identifier acquisition unit.

[0011] In one aspect of the present invention, the design conditions include at least one of construction conditions that determine the construction machinery that can be used at the construction site, ground conditions that indicate the characteristics of the ground at the site, and load conditions that are determined by the building to be constructed at the site.

[0012] Another aspect of the present invention is a program that causes a computer to execute a design condition acquisition step for acquiring design conditions determined for each pile construction project, and a pile specification output step for outputting one or more pile specifications determined according to construction costs from among multiple pile specifications narrowed down according to the design conditions acquired by the design condition acquisition step. [Effects of the Invention]

[0013] According to the present invention, it is possible to preferably grasp the desired pile specifications. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram showing an example of a state in which the pile specification recommendation system according to the embodiment is used. [Figure 2] FIG. 1 is a block diagram for explaining aspects of a pile specification recommendation system according to an embodiment. [Figure 3] FIG. 1 is a block diagram for explaining an example of a functional configuration of a pile specification recommendation device according to an embodiment. [Figure 4] FIG. 10 is a diagram illustrating an example of a correspondence relationship stored in a correspondence relationship storage device. [Figure 5] FIG. 10 is a Venn diagram for explaining narrowing down by a narrowing down unit. [Figure 6] FIG. 2 is a diagram showing an example of customer information stored in a customer information storage device. [Figure 7] FIG. 4 is a diagram showing an example of a first display screen displayed on the terminal device. [Figure 8] FIG. 10 is a diagram showing an example of a second display screen displayed on the terminal device. [Figure 9] 10 is a flowchart for explaining an example of a processing flow of the pile specification recommendation device 20 according to the embodiment. [Figure 10] FIG. 2 is a block diagram showing an example of the internal configuration of a pile specification recommendation device 20 according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] [Embodiment] A preferred embodiment of the pile specification recommendation system and program according to the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, identical or similar parts are designated by identical or similar reference numerals. Note that the present invention is not limited to these embodiments and includes various modifications or improvements. In other words, the components described below include those that can be easily imagined by a person skilled in the art and those that are substantially identical, and the components described below can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the components of the present invention may be made without departing from the spirit of the present invention.

[0016] Hereinafter, an example will be described in which the pile specification recommendation system 1 determines the specifications of a steel pipe pile. Note that the pile specification recommendation system 1 according to this embodiment is not limited to this example, and may be used, for example, in determining the combination of specifications of tubular steel materials such as ground improvement columns and multi-bladed steel pipes. In this specification, the specifications of a steel pipe pile may be referred to as pile specifications.

[0017] FIG. 1 is a schematic diagram showing an example of a usage state of the pile specification recommendation system 1 according to the embodiment. A customer 3 communicates desired conditions for the construction of a steel pipe pile to a user 2. In FIG. 1, an example in which the customer 3 is an individual is shown, but the customer 3 may also be an organization such as a company. The user 2 operates a terminal device 10 to input arbitrary conditions into the pile specification recommendation system 1. The arbitrary conditions are conditions that limit the pile specifications PS to be used in the construction project that the customer 3 has requested the user 2 to perform. The customer 3 may also operate the terminal device 10 directly as necessary.

[0018] The terminal device 10 is, for example, an information processing terminal such as a computer, a smartphone, or a tablet. The terminal device 10 is operated by a user 2. The terminal device 10 acquires conditions for limiting the pile specification PS based on the operation of the user 2. The terminal device 10 outputs the acquired conditions to the pile specification recommendation device 20. In addition, the terminal device 10 displays the information output from the pile specification recommendation device 20 to the user 2 or the customer 3.

[0019] The pile specification recommendation device 20 acquires the conditions input based on the operation of the user 2 from the terminal device 10. The pile specification recommendation device 20 determines candidates for pile specifications PS that meet the conditions, referring to the correspondence storage device 30 and the customer information storage device 40 as necessary. The pile specification PS is information on the characteristics of the steel pipe pile, such as the steel pipe diameter, blade diameter, and steel pipe thickness of the steel pipe pile. The pile specification recommendation device 20 outputs the identified candidates for pile specifications PS to the terminal device 10.

[0020] The terminal device 10 displays the information on the pile specification PS output from the pile specification recommendation device 20 to the user 2 or the customer 3. The user 2 may, for example, refer to the pile specification PS displayed on the terminal device 10 and propose to the customer 3 the steel pipe piles to be used in the construction project, the construction costs, etc. Specifically, the user 2 may propose the presented pile specification PS candidates to the customer 3 as they are, or may propose to the customer 3 some modifications of the pile specification PS taking into consideration the construction feasibility, the construction costs, etc. Construction feasibility is an index indicating whether construction is actually possible with the presented pile specification PS. For example, if a pile specification PS requiring the construction of five or more steel pipe piles is presented for a construction project targeting a site with an area where up to four steel pipe piles can be driven, the user may determine that the presented pile specification PS is not construction feasible and may modify some of the pile specification PS.

[0021] Fig. 2 is a block diagram for explaining an aspect of a pile specification recommendation system 1 according to an embodiment. The pile specification recommendation system 1 includes a terminal device 10, a pile specification recommendation device 20, a correspondence relationship storage device 30, and a customer information storage device 40. Fig. 2 shows an example in which there is one terminal device 10, but the number of terminal devices 10 included in the pile specification recommendation system 1 may be two or more.

[0022] The terminal device 10 and the pile specification recommendation device 20, the pile specification recommendation device 20 and the correspondence relationship storage device 30, and the pile specification recommendation device 20 and the customer information storage device 40 are connected to each other via a network NW. The network NW is a predetermined communication network configured using lines. The network NW is, for example, the Internet.

[0023] The correspondence relationship storage device 30 stores information indicating the correspondence relationship CR between design conditions and pile specifications PS. The customer information storage device 40 stores construction costs CC that serve as a criterion for determining candidates for pile specifications PS for each customer. Note that the correspondence relationship storage device 30 and the customer information storage device 40 do not necessarily need to be provided separately and independently from the pile specification recommendation device 20. At least one of the correspondence relationship storage device 30 and the customer information storage device 40 may be provided in the pile specification recommendation device 20.

[0024] FIG. 3 is a block diagram illustrating an example of the functional configuration of the pile specification recommendation device 20 according to the embodiment. The pile specification recommendation device 20 includes a design condition acquisition unit 21, a pile specification range acquisition unit 22, a correspondence relationship acquisition unit 23, an additional condition acquisition unit 24, a narrowing-down unit 25, an identifier acquisition unit 26, a customer information acquisition unit 27, a cost calculation unit 28, a pile specification output unit 29, and a memory unit M. Each of these functional units is realized, for example, by a computer including a central processing unit (CPU) and memory, and software. Each functional unit may also be realized by an electronic circuit, if necessary. Furthermore, each functional unit does not have to be included in a single device, and the pile specification recommendation device 20 may be configured by multiple devices. The functional configuration of the pile specification recommendation device 20 shown in FIG. 3 is merely an example, and the present embodiment is not limited to this example.

[0025] The design condition acquisition unit 21 acquires, from the terminal device 10, design conditions DC input based on the operation of the user 2. The design conditions DC are conditions determined based on meetings between the user 2 and the customer 3, etc., and are conditions that must be met in a construction project desired by the customer 3. In other words, the design conditions DC are design conditions determined for each pile construction project. The design conditions DC may include at least one of conditions called "given conditions" determined based on ground conditions, legal regulations, customer requests, etc., such as construction conditions, ground conditions, and loading conditions.

[0026] Construction conditions are conditions that limit the construction machines that can be used at the construction site, such as the size of the access road, the area of ​​the construction site, height restrictions for construction machines, and elevation differences at the construction site. Construction machines are machines used to bury piles in the ground, such as pile drivers.

[0027] Ground conditions are conditions that indicate the characteristics of the ground at the construction site, and are conditions at the time of construction that are brought about, for example, by differences in geological strata (changes in the ground) by region or depth. Ground conditions are obtained, for example, by geological surveys such as boring surveys and standard penetration tests. Specifically, ground conditions may include information that identifies the region where the construction site is located, such as the survey date, prefecture, or address, the soil type name by depth, N value, and water level in the borehole.

[0028] The loading conditions are determined by the building to be constructed at the steel pipe pile construction site, and may include, for example, the weight of the building to be constructed, the number of columns, and the seismic force that will be generated on the building due to an earthquake.

[0029] The pile specification range acquisition unit 22 acquires the pile specification range PSR input based on the operation of the user 2 from the terminal device 10. The pile specification range PSR is the range of pile specifications PS selected based on the operation of the user 2 from the population P classified according to the pile specifications PS. The range of pile specifications PS may be the upper and lower limit values ​​of the steel pipe diameter, blade diameter, steel pipe thickness, etc. that indicate the characteristics of the pile specification PS, or may be each discretely selected value. The population P includes various pile specifications PS. In the population P, the pile specifications PS are classified by item of the pile specification PS.

[0030] Specifically, we will explain an example in which the pile specification PS has three items: steel pipe diameter, blade diameter, and steel pipe thickness. The candidates for steel pipe diameter are 1A [mm], 2A [mm], and 3A [mm], the candidates for blade diameter are 1B [mm], 2B [mm], and 3B [mm], and the candidates for steel pipe thickness are 1C [mm], 2C [mm], and 3C [mm]. In the above case, there are 3 × 3 × 3 = 27 different pile specifications PS in the population P. For example, if the construction machine that can be transported to the construction site cannot use the steel pipe diameter of the pile specification PS with a steel pipe diameter of 1A [mm], User 2 may set the pile specification PS range to include steel pipe diameters 2A [mm] and 3A [mm], blade diameters 1B [mm] to 3B [mm], and steel pipe thicknesses 1C [mm] to 3C [mm]. This determines the candidate pile specifications PS to be presented to user 2 from among 2 x 3 x 3 = 18 pile specifications PS, excluding the pile specification PS for a steel pipe diameter of 1A [mm].

[0031] The correspondence acquisition unit 23 acquires the correspondence CR from the correspondence storage device 30. The correspondence CR is information in which the design conditions DC are associated with the pile specifications PS that conform to the design conditions DC. The pile specifications PS that conform to the design conditions DC are, for example, pile specifications PS that are appropriate for construction in the case of the design conditions DC.

[0032] Fig. 4 is a diagram showing an example of the correspondence relationship CR stored in the correspondence relationship storage device 30. Fig. 4 shows a first correspondence relationship CR1 and a second correspondence relationship CR2 as examples of the correspondence relationship CR. When the construction condition is "machine A," the pile specification PS that conforms to the design conditions (construction conditions) is indicated in the first correspondence relationship CR1 as follows: a steel pipe diameter of 2A [mm] or 3A [mm], a blade diameter of 1B [mm] to 3B [mm], and a steel pipe thickness of 1C [mm] to 3C [mm]. When the construction condition is "machine B," the ground condition is "ground B," and the load condition is "load B," the pile specification PS that conforms to the design conditions (construction conditions, ground conditions, and load conditions) is indicated in the second correspondence relationship CR2 as follows: a steel pipe diameter of 3A [mm], a blade diameter of 3B [mm], and a steel pipe thickness of 2C [mm] or 3C [mm]. The correspondence relationship CR stored in the correspondence relationship storage device 30 may be information indicating the relationship between at least one of the design conditions, the construction conditions, the ground conditions, and the loading conditions, and the pile specification PS, like the first correspondence relationship CR1, or may be information indicating the relationship between all of the construction conditions, the ground conditions, and the loading conditions and the pile specification PS. Note that the correspondence relationship storage device 30 may store a correspondence relationship CR set based on an operation by the user 2. The correspondence relationship storage device 30 may also store a correspondence relationship CR between the pile specification PS and the design conditions DC that the user 2 has determined to be an appropriate pile specification PS when constructing a steel pipe pile with the pile specification PS output by the pile specification recommendation device 20.

[0033] The additional condition acquisition unit 24 acquires additional conditions AC based on the operation of the user 2. The additional conditions AC are conditions that limit the pile specifications PS presented by the pile specification recommendation device 20. The additional conditions AC may be conditions that indicate the requests of the customer 3, for example. Specifically, the additional conditions AC may include information on at least any of upper and lower limits for items such as material costs, construction costs, construction costs which are the sum of material costs and construction costs, construction days, number of personnel, number of piles to be installed, or CO2 emissions. Furthermore, the additional conditions AC may include a specification of whether mechanical joints or welded joints should be used as joints. Note that in the following description, the number of piles to be installed refers to the number of piles to be driven into the foundation, and does not include piles connected to add piles.

[0034] The memory unit M stores various pile specifications PS (population P) that serve as the basis for narrowing down the results. The memory unit M may store pile specifications PS that determine values ​​such as steel pipe diameter, blade diameter, and steel pipe thickness, or may store values ​​that can be set for each item of the pile specification PS. Specifically, if there are 1A [mm], 2A [mm], and 3A [mm] as candidates for steel pipe diameter, 1B [mm], 2B [mm], and 3B [mm] as candidates for blade diameter, and 1C [mm], 2C [mm], and 3C [mm] as candidates for steel pipe thickness, the memory unit M may store 27 pile specifications PS, or may store candidates for the steel pipe diameter, blade diameter, and steel pipe thickness, respectively.

[0035] The narrowing down unit 25 acquires each pile specification PS that will become the population P from the memory unit M. Furthermore, the narrowing down unit 25 acquires information from at least the design condition acquisition unit 21 out of the additional condition acquisition unit 24 from the design condition acquisition unit 21. Based on the acquired information, the narrowing down unit 25 narrows down the pile specifications PS desired by the user 2 or the customer 3. The narrowing down unit 25 outputs the narrowed down pile specifications PS to the cost calculation unit 28. Hereinafter, the narrowing down performed by the narrowing down unit 25 will be specifically described with reference to FIG. 5.

[0036] FIG. 5 is a Venn diagram for explaining the narrowing down process performed by the narrowing down unit 25. FIG. 5 shows the relationship between the pile specifications PS of the population P, the set of pile specifications PS that satisfy the design conditions DC acquired based on the operation of user 2, the set of pile specifications PS within the pile specification range PSR acquired based on the operation of user 2, the set of pile specifications PS that are set in the correspondence relationship CR as conforming to the design conditions DC, and the set of pile specifications PS that satisfy the additional conditions AC acquired based on the operation of user 2. In FIG. 5, some elements in each set belong to each of the other sets. Note that the size and position of the figures representing each set shown in FIG. 5 are merely examples, and the present embodiment is not limited to these examples. Furthermore, each set may have a subset relationship, for example.

[0037] The narrowing-down unit 25 narrows down the pile specifications PS that belong to a set of common parts for one or more sets of conditions that are the narrowing-down conditions. For example, when based only on the design conditions DC, the narrowing-down unit 25 narrows down the population P to pile specifications PS that belong to the set of design conditions DC, that is, the first set S1, the second set S2, the third set S3, the fourth set S4, the fifth set S5, the sixth set S6, and the seventh set S7.

[0038] Furthermore, based on the design conditions DC and the pile specification range PSR, the narrowing-down unit 25 narrows down the pile specifications PS from the population P to a set of intersections between the design conditions DC and the pile specification range PSR, i.e., the pile specifications PS belonging to the second set S2, the third set S3, the fifth set S5, and the sixth set S6.

[0039] The identifier acquisition unit 26 acquires the identifier ID input based on the operation of the user 2 from the terminal device 10. The identifier ID is a symbol such as a letter or a number that identifies each customer 3. The identifier ID may be, for example, the name of an organization such as a company, the name of a customer 3 such as the name of an individual customer 3, or a customer code set for each customer 3.

[0040] The customer information acquisition unit 27 acquires customer information CI from the customer information storage device 40. The customer information CI is, for example, information in which an identifier ID is associated with construction cost items determined for each customer 3. The construction cost CC is an index that serves as a criterion for determining candidates for pile specifications PS output by the pile specification recommendation device 20. The construction cost CC may include, for example, material costs, construction costs, construction costs, number of construction days, number of personnel, number of piles to be constructed, lease fees for construction machinery, or environmental impacts such as CO2 emissions.

[0041] FIG. 6 is a diagram showing an example of customer information CI stored in the customer information storage device 40. FIG. 6 shows first customer information CI1 and second customer information CI2 as examples of customer information CI. The first customer information CI1 associates a customer 3 having an identifier ID (customer code) of "0001" with "construction cost," which is the construction cost CC serving as the first criterion for the customer 3 (first construction cost CC1), and "number of piles," which is the construction cost CC serving as the second criterion for the customer 3 (second construction cost CC2). The second customer information CI2 associates a customer 3 having an identifier ID of "0002" with the construction costs CC serving as the first criterion through the seventh criterion for the customer 3. The customer information CI may be set, for example, based on an operation by the user 2.

[0042] The cost calculation unit 28 acquires information on the plurality of pile specifications narrowed down by the narrowing down unit 25. The cost calculation unit 28 determines one or more pile specifications from the acquired plurality of pile specifications according to the construction cost CC. The cost calculation unit 28 determines the pile specifications according to the construction cost CC by calculating the construction cost CC for each of the plurality of pile specifications narrowed down by the narrowing down unit 25. The cost calculation unit 28 may, for example, determine the pile specification with the smallest construction cost CC as a candidate for output, or may determine a number of pile specifications determined by the user 2 in order of decreasing construction cost CC as candidates for output. Furthermore, the cost calculation unit 28 may determine the pile specification according to one construction cost CC, or may determine the pile specification according to multiple construction costs CC. Determining the pile specification according to multiple construction costs CC may, for example, mean determining the pile specification with the smallest second construction cost CC2 from among the pile specifications with the smallest first construction cost CC1 as a candidate for output, or may mean determining the pile specification with the smallest first construction cost CC1 and the pile specification with the smallest second construction cost CC2 as separate independent candidates.

[0043] When the cost calculation unit 28 acquires information from the identifier acquisition unit 26 and the customer information acquisition unit 27, the cost calculation unit 28 determines candidate pile specifications to be output according to the construction cost CC that is the standard of the customer 3 indicated by the identifier ID acquired by the identifier acquisition unit 26. When the cost calculation unit 28 does not acquire information from the identifier acquisition unit 26 and the customer information acquisition unit 27, the cost calculation unit 28 determines candidate pile specifications to be output according to the construction cost CC that is predetermined by the user 2. Note that the construction cost CC that is predetermined by the user 2 may be, for example, the "construction cost" and the "number of piles to be constructed."

[0044] The pile specification output unit 29 outputs information indicating one or more pile specifications determined by the cost calculation unit 28 to the terminal device 10. The pile specification output unit 29 may format the pile specifications PS determined by the cost calculation unit 28 into an estimate and output it.

[0045] FIG. 7 is a diagram illustrating an example of a first display screen D1 displayed on the terminal device 10. FIG. 7 illustrates an example of a screen for inputting a pile specification range PSR and additional conditions AC. The first display screen D1 illustrated in FIG. 7 includes two input sections D10, a first input section D11 and a second input section D12, and an automatic assignment execution button D13. The pile specification recommendation device 20 acquires the pile specification range PSR and additional conditions AC for each of one or more types of pile specifications PS. When constructing steel pipe piles, it is common to drive thick steel pipe piles near the center of a building to be constructed and drive thinner steel pipe piles around the thick steel pipe piles to support the building's load while reducing construction costs. Since the first display screen D1 has multiple input sections D10, the pile specification recommendation device 20 according to the embodiment can determine and output a combination of multiple types of pile specifications PS according to construction costs.

[0046] The input section D10 has as its components a joint type selection section D111, a steel pipe diameter selection section D112, a blade diameter selection section D113, and a steel pipe thickness selection section D114. The joint type selection section D111 is an example of an additional condition AC, and the steel pipe diameter selection section D112, the blade diameter selection section D113, and the steel pipe thickness selection section D114 are examples of a pile specification range PSR.

[0047] The joint type selection unit D111 selects the type of joint between steel pipe piles in response to an operation by the user 2. The joint types may include mechanical joints (AKJ (registered trademark), CCJ (registered trademark), TSJ (registered trademark), etc.) and welded joints. Mechanical joints are quick to install and can be used even at sites where fire cannot be used, such as substations. On the other hand, welded joints are less expensive to install than mechanical joints, but cannot be used at sites where fire cannot be used or on bad weather days. The user 2 operates the joint type selection unit D111 in accordance with the construction project requested by the customer 3 and the customer 3's requests. Note that the type of joint is often standardized for each site. Therefore, the joint type selection unit D111 may be provided only in either the first input unit D11 or the second input unit D12.

[0048] The steel pipe diameter selection unit D112 selects the range of steel pipe diameters to be determined by the pile specification recommendation device 20 in response to the operation of the user 2. In FIG. 7, the steel pipe diameter selection unit D112 provided in the first input unit D11 selects a range of relatively thick steel pipe diameters, and the steel pipe diameter selection unit D112 provided in the second input unit D12 selects a range of relatively thin steel pipe diameters. The blade diameter selection unit D113 selects the range of blade diameters to be determined by the pile specification recommendation device 20 in response to the operation of the user 2. The steel pipe thickness selection unit D114 selects the range of steel pipe thicknesses to be determined by the pile specification recommendation device 20 in response to the operation of the user 2.

[0049] The automatic allocation execution button D13 is a button that, when operated, causes the pile specification recommending device 20 to output pile specifications PS based on the conditions selected in one or more input sections D10.

[0050] Fig. 8 is a diagram showing an example of the second display screen D2 displayed on the terminal device 10. Fig. 8 shows the pile specifications PS that are output after the automatic allocation execution button D13 is operated. The pile specification presentation unit D20 shown in Fig. 8 has, as its components, a first pile specification presentation unit D21 and a second pile specification presentation unit D22. The pile specification presentation unit D20 may be provided with three or more pile specification display units, and may be provided with pile specification display units in the number corresponding to the number of items of construction cost CC that the customer 3 uses as a standard (such as the number of construction costs CC corresponding to the customer information CI).

[0051] The first pile specification presentation unit D21 displays the pile specification PS determined by the pile specification recommendation device 20 when the first construction cost CC1 is set to "construction cost (cost)". The second pile specification presentation unit D22 displays the pile specification PS determined by the pile specification recommendation device 20 when the second construction cost CC2 is set to "number of piles (number)".

[0052] 9 is a flowchart for explaining an example of the processing flow of the pile specification recommendation device 20 according to the embodiment. The pile specification recommendation device 20 acquires design conditions DC from the terminal device 10 (step S101). The pile specification recommendation device 20 also acquires a pile specification range PSR from the terminal device 10 (step S102). The pile specification recommendation device 20 also acquires a correspondence relationship CR (step S103). The pile specification recommendation device 20 also acquires additional conditions AC from the terminal device 10 (step S104). The pile specification recommendation device 20 narrows down pile specifications PS that meet the conditions from the population P (step S105). The pile specification recommendation device 20 acquires an identifier ID from the terminal device 10, and acquires customer information CI from the customer information storage device 40 (step S106). The pile specification recommendation device 20 determines one or more pile specifications PS that have the smallest construction cost CC from the pile specifications PS narrowed down in step S105 (step S107). The pile specification recommendation device 20 outputs the determined pile specifications PS to the terminal device 10 (step S108).

[0053] Note that the pile specification recommendation device 20 according to this embodiment does not have to execute the processes from step S101 to step S104 in the order shown in Fig. 9. For example, the processes from step S101 to step S104 may be executed simultaneously, or may be executed in an order different from the order shown in Fig. 9.

[0054] Furthermore, the pile specification recommendation device 20 according to this embodiment does not necessarily have to execute the processes of steps S102 to S104 and step S106. If the processes of steps S102 to S104 and step S106 are not executed, the pile specification recommendation device 20 does not have to include the pile specification range acquisition unit 22 to the additional condition acquisition unit 24, the identifier acquisition unit 26, and the customer information acquisition unit 27.

[0055] [Summary of the embodiment] According to the above-described embodiment, the pile specification recommendation system 1 includes a design condition acquisition unit 21 that acquires design conditions DC determined for each pile construction project, and a pile specification output unit 29 that outputs one or more pile specifications PS determined according to construction costs CC from among multiple pile specifications PS narrowed down according to the design conditions DC acquired by the design condition acquisition unit 21. Generally, in order to identify the pile specification PS with the smallest construction cost CC, i.e., the construction costs required for a construction project, it is necessary to calculate the construction costs CC for multiple pile specifications PS determined based on experience and compare the multiple calculation results, which is time-consuming. The pile specification recommendation system 1 according to this embodiment can, for example, calculate the pile specification PS with the smallest construction cost CC from among the pile specifications PS that conform to the design conditions DC acquired based on the operation of the user 2, and present it to the user 2. This allows the user 2 to easily identify the pile specification PS desired for the construction project.

[0056] Moreover, according to the above-described embodiment, the pile specification recommendation system 1 further includes a pile specification range acquisition unit 22 that acquires a pile specification range PSR selected from a population P classified according to the pile specification PS, and the pile specification output unit 29 outputs one or more pile specifications PS determined according to the construction cost CC from among the multiple pile specifications PS further narrowed down according to the pile specification range PSR acquired by the pile specification range acquisition unit 22. This makes it possible for the pile specification recommendation system 1 to prevent outputting a pile specification PS that is different from the pile specification PS desired by the user 2 or outputting a pile specification PS that is inappropriate for construction. Furthermore, by not calculating the construction cost CC for pile specifications PS not desired by the user 2, i.e., by narrowing down the pile specifications PS to be calculated, the pile specification recommendation system 1 can reduce the amount of calculation and time required to determine the pile specification PS to be output.

[0057] Furthermore, according to the above-described embodiment, the correspondence relationship acquisition unit 23, which acquires the correspondence relationship CR between the design conditions DC and the pile specifications PS that conform to the design conditions DC, and the pile specification output unit 29 output one or more pile specifications PS determined according to the construction cost CC from among the multiple pile specifications PS further narrowed down according to the correspondence relationship CR acquired by the correspondence relationship acquisition unit 23. This makes it possible for the pile specification recommendation system 1 to prevent outputting a pile specification PS that differs from the pile specification PS desired by the user 2 or outputting a pile specification PS that is inappropriate for construction. Furthermore, the pile specification recommendation system 1 can output an appropriate pile specification PS even when the user 2 has little experience and finds it difficult to appropriately select a pile specification range PSR. Furthermore, by not including pile specifications PS that are not included in the correspondence relationship CR in the calculation of the construction cost CC, it is possible to reduce the amount of calculation and time required to determine the pile specification PS to be output.

[0058] Furthermore, according to the above-described embodiment, the construction cost CC items include the construction cost and the number of piles to be installed, and the pile specification output unit 29 separately and independently outputs the pile specification PS determined according to the lowest construction cost and the pile specification PS determined according to the smallest number of piles. When determining the pile specification PS of steel pipe piles to be used at a construction site, low construction cost and a small number of steel pipe piles to be installed are often the criteria. Since the pile specification recommendation system 1 according to the embodiment separately and independently presents the pile specification PS with the lowest construction cost and the pile specification PS with the smallest number of piles, the user 2 can propose the pile specification PS to the customer 3 while comparing the construction cost when the pile specification PS with the smallest number of piles is adopted with the construction cost when the number of piles is not important. This makes it easier for the user 2 to propose the pile specification PS desired by the customer 3.

[0059] Moreover, according to the above-described embodiment, the pile specification recommendation system 1 further includes a customer information acquisition unit 27 that acquires customer information CI in which an identifier ID that identifies each customer 3 is associated with an item of construction cost CC determined for each customer 3, and an identifier acquisition unit 26 that acquires the identifier ID of the customer 3 based on an operation of the user 2, and the pile specification output unit 29 outputs one or more pile specifications PS that are determined according to the item of construction cost CC associated with the identifier ID acquired by the identifier acquisition unit 26 from among the multiple pile specifications PS. The pile specification recommendation system 1 according to the embodiment can appropriately output the pile specification PS desired by the customer 3 by determining the pile specification PS according to the construction cost CC that the customer 3 uses as a standard.

[0060] Furthermore, according to the above-described embodiment, the design conditions DC include at least one of construction conditions that determine the construction machines that can be used at the construction project site, ground conditions that indicate the characteristics of the ground at the construction project site, and load conditions that are determined by the building to be constructed at the construction project site. The pile specifications PS of steel pipe piles that can be used vary depending on the construction machine. For example, small construction machines may require narrow access roads, but the pile specifications PS of the steel pipe piles that they can use are limited. On the other hand, large construction machines can use steel pipe piles with various pile specifications PS, but require wide access roads. By including construction conditions that determine the construction machines that can be used in the design conditions DC, the pile specification recommendation system 1 can appropriately output the pile specifications PS desired by the customer 3. Furthermore, the hardness of the ground layers at each depth varies from construction site to construction site. By including ground conditions that indicate the characteristics of the ground in the design conditions DC, the pile specification recommendation system 1 can output the pile specifications PS appropriate for the construction project site. Furthermore, the bearing capacity required of steel pipe piles, and therefore the pile specifications PS, vary depending on the magnitude of the load applied. By including the load conditions of the building to be constructed in the design conditions DC, the pile specification recommendation system 1 can output pile specifications PS that can support the load.

[0061] FIG. 10 is a block diagram showing an example of the internal configuration of the pile specification recommendation device 20 according to the embodiment. At least some of the functions of the pile specification recommendation device 20 can be realized using a computer. As shown in the figure, the computer includes a central processing unit 901, a RAM 902, an input / output port 903, input / output devices 904 and 905, and a bus 906. The computer itself can be realized using existing technology. The central processing unit 901 executes instructions contained in a program read from the RAM 902 or the like. In accordance with each instruction, the central processing unit 901 writes data to the RAM 902, reads data from the RAM 902, and performs arithmetic and logical operations. The RAM 902 stores data and programs. Each element included in the RAM 902 has an address and can be accessed using the address. RAM is an abbreviation for "random access memory." The input / output port 903 is a port through which the central processing unit 901 exchanges data with external input / output devices, etc. The input / output devices 904 and 905 are input / output devices. The input / output devices 904 and 905 exchange data with the central processing unit 901 via the input / output port 903. The bus 906 is a common communication path used within the computer. For example, the central processing unit 901 reads and writes data from the RAM 902 via the bus 906. Also, for example, the central processing unit 901 accesses the input / output port via the bus 906. Furthermore, all or part of the functional units provided in the pile specification recommendation device 20 may be realized using hardware such as an ASIC, a PLD, or an FPGA. Furthermore, all or part of the functional units may be realized by a combination of software and hardware.

[0062] In addition, all or part of the functions of each unit of the pile specification recommendation device 20 in the above-mentioned embodiment may be realized by recording a program for realizing these functions on a computer-readable recording medium, and reading and executing the program recorded on this recording medium into a computer system. Note that the "computer system" here includes hardware such as an OS and peripheral devices.

[0063] Furthermore, "computer-readable recording media" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage units such as hard disks built into computer systems. Furthermore, "computer-readable recording media" may also include devices that dynamically store programs for a short period of time, such as communication lines used when transmitting programs over networks like the Internet or communication lines like telephone lines, or devices that store programs for a fixed period of time, such as volatile memory within a computer system that serves as a server or client in such cases. Furthermore, the program may be one that realizes part of the aforementioned functions, or may be one that can realize the aforementioned functions in combination with a program already stored in the computer system.

[0064] Although one embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to the above, and various design modifications can be made without departing from the spirit of the present invention. Furthermore, the configurations described in the above-described embodiments and examples can be combined. [Explanation of symbols]

[0065] 1...pile specification recommendation system, 2...user, 3...customer, 10...terminal device, 20...pile specification recommendation device, 30...correspondence relationship storage device, 40...customer information storage device, 21...design condition acquisition unit, 22...pile specification range acquisition unit, 23...correspondence relationship acquisition unit, 24...additional condition acquisition unit, 25...narrowing unit, 26...identifier acquisition unit, 27...customer information acquisition unit, 28...cost calculation unit, 29...pile specification output unit, M...storage unit, P...population, DC...design conditions, PSR...pile specification range, CR...correspondence relationship, AC...additional conditions, CI...customer information, ID...identifier, PS...pile specification, CC...construction cost

Claims

1. a design condition acquisition unit that acquires design conditions determined for each pile construction project; A pile specification output unit that outputs one or more pile specifications determined according to construction costs from among the multiple pile specifications narrowed down according to the design conditions acquired by the design condition acquisition unit; A pile specification recommendation system with

2. Further, a pile specification range acquisition unit is provided that acquires a range of pile specifications selected from a population classified according to pile specifications, The pile specification output unit outputs one or more pile specifications determined according to construction costs from among the plurality of pile specifications further narrowed down according to the range acquired by the pile specification range acquisition unit, The pile specification recommendation system according to claim 1.

3. a correspondence relationship acquisition unit that acquires a correspondence relationship between design conditions and pile specifications that conform to the design conditions; The pile specification output unit outputs one or more pile specifications determined according to construction costs from among the plurality of pile specifications further narrowed down according to the correspondence relationship acquired by the correspondence relationship acquisition unit. The pile specification recommendation system according to claim 1 or claim 2.

4. The construction cost items include the construction cost and the number of piles to be constructed, The pile specification output unit outputs pile specifications determined according to the low construction cost and pile specifications determined according to the small number of piles separately and independently. The pile specification recommendation system according to claim 1 or claim 2.

5. a customer information acquisition unit that acquires customer information in which an identifier that identifies each customer is associated with the construction cost items that are determined for each customer; an identifier acquisition unit that acquires a customer identifier based on a user operation; and The pile specification output unit outputs one or more pile specifications determined according to the construction cost items associated with the identifier acquired by the identifier acquisition unit, among the plurality of pile specifications. The pile specification recommendation system according to claim 1 or claim 2.

6. The design conditions include at least one of construction conditions that determine the construction machines that can be used at the construction site, ground conditions that indicate the characteristics of the ground at the site, and load conditions that are determined by the building to be constructed at the site. The pile specification recommendation system according to claim 1 or claim 2.

7. On the computer, a design condition acquisition step for acquiring design conditions determined for each pile construction project; a pile specification output step of outputting one or more pile specifications determined according to construction costs from among the plurality of pile specifications narrowed down according to the design conditions acquired by the design condition acquisition step; A program that executes the following.

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