Pile construction evaluation system, program, and pile construction evaluation method

Abstract

To provide a pile construction evaluation system estimating a pile construction result.SOLUTION: A pile construction evaluation system is provided with: a site information acquisition section acquiring construction place information and construction site test result information as site information; an estimation section, on the basis of dictionary information storing test result information including at least soil property per depth acquired through a test and an N value showing a result of a standard penetration test, information showing a test place, an occurrence result of a feature of a construction result upon pile construction at the site, pile position information showing positions of constructed piles, construction information on pile construction outputted with a construction machine having constructed piles, and constructed pile distances between positions where the standard penetration tests have been carried out and positions of constructed piles in association with each other, site information acquired with the site information acquisition section, and wight upon learning set according to the constructed pile distances, estimating a feature of a construction result occurring at the site; and an output section outputting a result estimated by the estimation section.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a pile constructability evaluation system, a program, and a pile constructability evaluation method. [Background technology]

[0002] 2. Description of the Related Art Conventionally, techniques have been disclosed for estimating the distribution of geological strata and geological properties required for foundation work on a building (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-37427 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional techniques as described above, there is a problem in that it is not possible to estimate the construction results of foundation piles (hereinafter also simply referred to as piles) of a building when the piles are constructed.

[0005] The present invention has been made to solve the above problems, and its object is to provide a pile constructability evaluation system, program, and pile constructability evaluation method that can estimate the results of pile construction. [Means for solving the problem]

[0006] In one embodiment of the present invention, a construction site information indicating the position of the construction site, and construction site test result information including at least the soil quality for each depth obtained at the construction site and the N value indicating the result of the standard penetration test are acquired as site information. The test result information including at least the soil quality for each depth obtained in the test and the N value indicating the result of the standard penetration test, information indicating the location of the test, the occurrence result of the characteristics of the construction result at the time of pile construction at the implementation location, pile position information indicating the position of the constructed pile, construction information regarding the construction of the pile output by the construction machine that constructed the pile, and the constructed pile distance, which is the distance between the position where the standard penetration test was performed at the construction site and the position of the constructed pile, are stored in correspondence with each other. The site information acquired by the site information acquisition unit and the weight at the time of learning set according to the constructed pile distance are used to estimate the characteristics of the construction result generated at the construction site. An output unit that outputs the results estimated by the estimation unit is provided. It is a pile construction evaluation system.

[0007] In addition, one embodiment of the present invention is a pile constructability evaluation system in which the estimation unit estimates the characteristics of the construction result that will occur when a pile is constructed at the position indicated by the construction position information, based further on construction position information indicating the position at which the pile will be constructed at the construction site, a planned construction pile distance, which is the distance between the position at which a standard penetration test was conducted at the construction site and the position at which the pile will be constructed, and a value set according to the relationship between the constructed pile distance and the planned construction pile distance.

[0008] In addition, one embodiment of the present invention is a pile constructability evaluation system in which the generation result of the construction result characteristics includes information indicating the type of construction result characteristic associated with the soil quality and the N value at the construction site, and the output unit outputs the type of construction result characteristic for each combination of the soil quality and the N value at the construction site.

[0009] In addition, one embodiment of the present invention, in the above-mentioned pile constructability evaluation system, further includes an abnormality detection unit that detects an abnormality in the construction machine based on the degree of deviation between the construction information at the construction site and the result estimated by the estimation unit, and the output unit further outputs the result detected by the abnormality detection unit.

[0010] In addition, one embodiment of the present invention is a pile constructability evaluation system in which the dictionary information is further stored in correspondence with information indicating construction conditions including pile specifications and construction machine specifications at the time of pile construction at the construction site, and the estimation unit further estimates the construction conditions according to the ground conditions at the construction site based on the dictionary information and the site information acquired by the site information acquisition unit.

[0011] In addition, one embodiment of the present invention is a pile constructability evaluation system in which the site information acquisition unit further acquires information indicating the design load of a facility to be constructed at the construction site, and the dictionary information is further stored in correspondence with information indicating the design load of a facility constructed at the implementation location, and the estimation unit further estimates the cost of driving foundation piles for the facility based on the dictionary information and the site information acquired by the site information acquisition unit.

[0012] Moreover, one embodiment of the present invention relates to the above-mentioned pile constructability evaluation system, and in a case where there are multiple factories that produce piles, the system further includes a selection unit that determines pile specifications that are frequently estimated by the estimation unit for each specified region from the construction conditions estimated by the estimation unit and the construction location information acquired by the site information acquisition unit, and selects specifications of piles to be produced in the factories located in each region, and the output unit further outputs the results selected by the selection unit.

[0013] Moreover, one embodiment of the present invention relates to the above-mentioned pile constructability evaluation system, and in a case where there are multiple factories that produce piles, the system further includes a selection unit that determines pile specifications that are frequently estimated by the estimation unit in common in each region from the construction conditions estimated by the estimation unit and the construction location information acquired by the site information acquisition unit, and selects pile specifications that are commonly produced by the factories located in each region, and the output unit further outputs the results selected by the selection unit.

[0014] In addition, one embodiment of the present invention is a computer, a construction site information indicating the position of the construction site, and construction site test result information including at least the soil quality for each depth obtained at the construction site and the N value indicating the result of the standard penetration test, as site information, a site information acquisition step of acquiring the construction result information including at least the soil quality for each depth obtained in the test and the N value indicating the result of the standard penetration test, information indicating the implementation location of the test, the occurrence result of the characteristics of the construction result at the time of pile construction at the implementation location, pile position information indicating the position of the constructed pile, construction information regarding the construction of the pile output by the construction machine that constructed the pile, and the constructed pile distance, which is the distance between the position where the standard penetration test was performed at the construction site and the position of the constructed pile, are stored in correspondence with each other, the site information acquired by the site information acquisition step, and the weight at the time of learning set according to the constructed pile distance, an estimation step of estimating the characteristics of the construction result generated at the construction site, and an output step of outputting the result estimated by the estimation step. It is a program that executes.

[0015] In addition, one embodiment of the present invention includes a site information acquisition process for acquiring, as site information, construction site information indicating the location of the construction site, and construction site test result information including at least the soil quality at each depth obtained at the construction site and the N value indicating the result of the standard penetration test; The pile constructability evaluation method includes: test result information including at least the soil quality at each depth obtained in the test and an N-value indicating the result of a standard penetration test; information indicating the location where the test was conducted; occurrence results of characteristics of the construction results during pile construction at the implementation location; pile position information indicating the position of the constructed pile; construction information regarding the construction of the pile output by the construction machine that constructed the pile; and a constructed pile distance, which is the distance between the position where the standard penetration test was conducted at the construction site and the position of the constructed pile, in association with each other and stored; an estimation process for estimating characteristics of the construction results occurring at the construction site based on the site information acquired by the site information acquisition process and a learning weight set according to the constructed pile distance; and an output process for outputting the result estimated by the estimation process. Effect of the Invention

[0016] According to the present invention, it is possible to provide a pile constructability evaluation system, a program, and a pile constructability evaluation method capable of estimating the results of pile construction. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a diagram illustrating an example of a functional configuration of the pile constructability evaluation system according to the first embodiment. [Diagram 2] FIG. 2 is a diagram showing an example of the operation flow of the pile constructability evaluation system of the present embodiment. [Diagram 3] FIG. 2 is a diagram illustrating an example of a functional configuration of a site information generating device according to the present embodiment. [Figure 4] FIG. 13 is a diagram showing an example of a handwritten boring test result form. [Diagram 5] 4 is a diagram showing an example of soil classification information generated by a site information generating unit of the present embodiment. FIG. [Figure 6] FIG. 1 is a diagram showing an example of standard penetration test result information generated by the on-site information generating unit of this embodiment. [Figure 7] FIG. 4 is a diagram illustrating an example of feature type information according to the present embodiment. [Figure 8] FIG. 13 is a diagram showing an example of the characteristics of the construction results (remaining high / remaining low). [Figure 9] FIG. 13 is a diagram showing an example of a characteristic of a construction result (intermediate layer not yet developed). [Figure 10] FIG. 13 is a diagram showing an example of the characteristics (slippage) of the construction result. [Figure 11] FIG. 13 is a diagram showing an example of a characteristic of construction results (insufficient penetration into the supporting layer). [Figure 12] FIG. 4 is a diagram illustrating an example of dictionary information according to the present embodiment. [Figure 13] FIG. 11 is a diagram illustrating an example of an estimation result by an estimation unit of the present embodiment. [Figure 14] FIG. 13 is a diagram illustrating a modified example of the functional configuration of the estimation device. [Figure 15] FIG. 2 is a diagram illustrating an example of an operation flow of the estimation device. [Figure 16] 4 is an example of construction information output by a construction machine. [Figure 17] 13 is a diagram showing an example of a comparison result output by an output unit of the present modified example. FIG. [Figure 18] FIG. 11 is a diagram illustrating an example of a functional configuration of the pile constructability evaluation system according to the second embodiment. [Figure 19] FIG. 11 is a diagram illustrating an example of a proposal by a selection unit of the present embodiment. [Figure 20] FIG. 13 is a diagram showing an example of a constructed pile distance in this embodiment. [Figure 21] FIG. 13 is a diagram showing a modified example of the installed pile distance in this embodiment. [Figure 22] FIG. 11 is a diagram showing a second modified example of the installed pile distance in this embodiment. [Diagram 23] FIG. 2 is a diagram illustrating an example of an operation flow of the estimation device of the present embodiment. [Figure 24] FIG. 1 is a diagram showing an example of a conventional boring test result. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] (First embodiment) The pile constructability evaluation system 1 of this embodiment can be used in the design stage or material ordering stage of pile construction, i.e., the pre-construction stage, or in the on-site pile construction stage. First, the case where the pile constructability evaluation system 1 is used in the design stage or material ordering stage of pile construction will be described with reference to Figs. 1 and 2. The pile construction performance evaluation system 1 can handle any type of pile, for example, a steel pipe pile or a concrete pile. In this embodiment, however, a steel pipe pile having a spiral blade at the tip and penetrating into the ground by the propulsive force of the blade caused by the rotation of the pile will be described as an example.

[0019] [Functional configuration of pile constructability evaluation system] FIG. 1 is a diagram showing an example of a functional configuration of a pile constructability evaluation system 1 according to the present embodiment. FIG. 2 is a diagram showing an example of the flow of operations of the pile constructability evaluation system 1 of this embodiment. The pile constructability evaluation system 1 includes an estimation device 10, a site information generation device 20, an output device 30, and a dictionary information storage unit 40. The estimation device 10 is a computer device that operates based on a program. The estimation device 10 includes a site information acquisition unit 110, an estimation unit 120, and an output unit 130 as its functional units.

[0020] (Step S10) The site information acquisition unit 110 acquires the site information 221 from the site information generation device 20. The site information 221 is information obtained from a site where pile construction is planned. For example, a boring test is conducted at the site where pile construction is planned. In this boring test, the soil quality at each depth and the N value indicating the result of a standard penetration test are obtained. In this case, the site information 221 includes construction location information indicating the position of the site where pile construction is planned, and boring test result 211 (construction site boring result information) obtained as a result of a prior boring test at the site where construction is planned. The functional configuration of the site information generating device 20 that generates the site information 221 will be described. [Functional configuration of the on-site information generating device] FIG. 3 is a diagram illustrating an example of a functional configuration of the site information generating device 20 of the present embodiment. The site information generating device 20 includes a site information generating unit 210 , an operation unit 220 , a scanner 230 , a memory slot 240 , a display unit 250 , and a site information storage unit 260 .

[0021] The site information generating unit 210 is a computer device and operates based on a program. The operation unit 220 includes, for example, a keyboard, a mouse, a touch panel, and the like, and detects operations by an operator of the site information generating device 20. The operation unit 220 outputs the detected operations to the site information generating unit 210. The scanner 230 converts a paper document into a digital image and outputs the converted digital image to the site information generating unit 210. The memory slot 240 reads out digital data from a portable recording medium and outputs the read out digital data to the site information generating unit 210. The display unit 250 includes, for example, a liquid crystal display, and displays various calculation results by the site information generating unit 210. The site information storage unit 260 is, for example, a semiconductor storage device, a hard disk device, or a cloud server, and stores the site information 221 generated by the site information generation unit 210.

[0022] The site information generating device 20 generates the site information 221, for example, by reading a handwritten boring test result form with a scanner 230, or by reading digital data output by the boring test machine from a memory slot 240.

[0023] 4 is a diagram showing an example of a handwritten boring test result form. In this example, the boring test result 211 form has depth on the vertical axis, and the soil type name and N value for each depth are written. The scanner 230 converts the boring test result 211 form into a digital image and outputs it to the site information generation unit 210. The site information generating unit 210 converts the digital image of the report of the boring test result 211 into digital data of the soil classification information 222 and the standard penetration test result information 223 .

[0024] FIG. 5 is a diagram showing an example of the soil classification information 222 generated by the site information generating unit 210 of this embodiment. FIG. 6 is a diagram showing an example of the standard penetration test result information 223 generated by the site information generating unit 210 of this embodiment. The site information generating unit 210 generates the soil classification information 222 and the standard penetration test result information 223 as site information 221 .

[0025] The site information 221 may include information indicating construction conditions, such as the specifications of the piles to be constructed at the site and the specifications of the construction machine. In addition, in this example, the case where the boring test results carried out at the site where construction is planned are used as the site information 221 has been described, but this is not limiting. The site information acquisition unit 110 may acquire, as the site information 221, information on a position close to the site where construction is planned from information accumulated in a database such as public information on the ground and geology that summarizes boring test results carried out at various points in the past. Returning to FIG. 1, the site information acquisition unit 110 outputs the acquired site information 221 to the estimation unit 120.

[0026] (Step S20) Returning to FIG. 2, the estimation unit 120 acquires the site information 221 output by the site information acquisition unit 110. In addition, the estimation unit 120 acquires the dictionary information 401 stored in the dictionary information storage unit 40. The dictionary information 401 is information that accumulates boring test results carried out at various points in the past. The dictionary information storage unit 40 stores boring result information 414 including at least the soil quality at each depth obtained as a result of the boring test and the N value indicating the result of the standard penetration test, implementation location information 411 indicating the implementation location of the boring test, and construction result information 413 at the time of pile construction at the implementation location, in association with each other. The dictionary information 401 will be described with reference to Figs. 7 to 12.

[0027] [Examples of types of construction results] FIG. 7 is a diagram showing an example of feature type information 402 of this embodiment. The feature type information 402 is information that classifies the contents of the features of construction results that have occurred in the past. In one example of this embodiment, the feature type information 402 stores a feature ID of the construction result, importance, and information indicating the contents of the features of the construction result, which are associated with each other. The feature ID of the construction result is an identifier that identifies the contents of the features of the construction result. The importance is an index that indicates the rank of the magnitude of the impact that the features of the construction result have. An example of the contents of the features of the construction result will be described.

[0028] Figure 8 is a diagram showing an example of the characteristics of the construction results (high and low). High-level stopping refers to a situation where the supporting layer is located at a higher (shallower) position than the planned depth at the time of design, and the piles stop at a higher position than planned. When high-level stopping occurs, it may be necessary to cut the piles at the construction site. When low-level stopping occurs, it may be necessary to add piles (extend them).

[0029] Figure 9 is a diagram showing an example of the characteristics of the construction result (intermediate layer not being developed). The intermediate layer not being developed refers to a situation where the intermediate layer (intermediate supporting layer) assumed at the time of design does not exist at the actual construction site, contrary to what was assumed at the time of design, or the N value tends to be smaller than that assumed, the layer thickness is thinner than expected, etc. When the intermediate layer is not developed, it may be necessary to add piles (extend them).

[0030] Figure 10 shows an example of the characteristics of the construction results (slippage). Slippage occurs mainly at the boundary between layers of clay soil, where the pile blades are unable to obtain driving force and spin freely. When slippage occurs, the construction period may be significantly extended from the planned time.

[0031] Figure 11 is a diagram showing an example of a construction result characteristic (insufficient penetration into the bearing layer). Insufficient penetration into the bearing layer (or difficulty in excavating the bearing layer) refers to a situation in which the bearing layer cannot be excavated due to a dense sand layer or gravel layer, and the bearing capacity is not fully realized. In the case of insufficient penetration into the bearing layer, it may be necessary to take measures such as increasing the number of piles or changing the construction method.

[0032] In the above example, the characteristics of the construction result include, but are not limited to, high / low depth, failure to develop intermediate layers, slippage, insufficient penetration into the supporting layer, etc. The characteristics of the construction result may also include construction conditions such as the rotation force, press-in force, and driving speed being better than the standard values, and the construction depth being better than the standard values, depending on the soil quality of the ground.

[0033] [Dictionary information] FIG. 12 is a diagram showing an example of dictionary information 401 of this embodiment. The dictionary information 401 is information that accumulates boring test results and construction conditions at the time of past pile construction, and the contents of the characteristics of the construction results that occurred during the construction. In this example, the dictionary information 401 associates implementation location information 411, construction condition information 412, construction result information 413, and boring result information 414. The implementation location information 411 is information that indicates the implementation location of pile construction, for example, latitude and longitude, or a position in an administrative district. The construction condition information 412 is information that indicates, for example, the specifications of the pile and the specifications of the construction machine. Here, the specifications of the pile include the material and shape of the pile (for example, the shape of the blade in the case of a steel pipe pile with blades), plate thickness, etc. The construction result information 413 is information indicating which of the above-mentioned characteristic type information 402 the characteristics of the construction result occurring at the site correspond to. The boring result information 414 is information indicating the result of the boring test performed at the site.

[0034] (Step S30) Returning to Fig. 1, the estimation unit 120 estimates the characteristics of a construction result that may occur at the construction site, based on the site information 221 acquired in step S10 and the dictionary information 401 acquired in step S20. An example of a method for estimating the characteristics of a construction result by the estimation unit 120 will be described.

[0035] (1) The estimation unit 120 estimates the characteristics of construction results that may occur at the planned construction site based on the dictionary information 401 for a location close to the location of the planned construction site indicated by the site information 221 from among the dictionary information 401. In this case, the estimation unit 120 may generate the estimation result in a format that allows comparison between past construction results in the vicinity of the planned construction site and the estimated result at the planned construction site.

[0036] (2) The estimation unit 120 estimates the characteristics of the construction results that may occur at the planned construction site based on the dictionary information 401 that has a soil composition similar to the soil composition of the planned construction site indicated by the site information 221 from among the dictionary information 401. The soil composition refers to the combination of the order of soil types at each depth and the thickness of each layer.

[0037] (3) The estimation unit 120 estimates the characteristics of the construction results that may occur at the planned construction site based on the dictionary information 401 having an N-value change pattern similar to the N-value change pattern of the planned construction site indicated by the site information 221 from among the dictionary information 401. The N-value change pattern refers to a combination of the magnitude of the N value for each depth.

[0038] (4) The estimation unit 120 estimates the characteristics of the construction results that may occur at the planned construction site based on the dictionary information 401 having construction conditions similar to the construction conditions indicated by the site information 221 from among the dictionary information 401.

[0039] The estimation unit 120 may estimate the characteristics of the construction result that may occur at the planned construction site by combining the above-mentioned estimation methods (1) to (4). For example, the estimation unit 120 may estimate the characteristics of the construction results that may occur at the planned construction site based on dictionary information 401 that has a soil composition similar to the soil composition of the planned construction site indicated by the site information 221 and has an N-value change pattern similar to the N-value change pattern of the planned construction site indicated by the site information 221.

[0040] That is, the estimation unit 120 estimates the features occurring at the construction site based on the dictionary information 401 and the site information 221 acquired by the site information acquisition unit 110. The estimation unit 120 outputs the estimation result to the output unit 130.

[0041] (Step S40) The output unit 130 outputs the estimation result of the characteristics of the construction result that may occur at the planned construction site estimated by the estimation unit 120 to the output device 30. The output device 30 includes, for example, a liquid crystal display and a printer, and outputs the estimation result. An example of the estimation result output by the output device 30 will be described with reference to FIG.

[0042] [Example of estimation results] FIG. 13 is a diagram showing an example of the estimation result by the estimation unit 120 of this embodiment. In the example of the figure, the vertical axis of the graph indicates depth, and the horizontal axis indicates the magnitude of the N value, the estimated value of the rotational force (torque) applied to the pile by the construction machine, the estimated value of the rotation speed, and the estimated value of the excavation speed of the pile. In this example, the output device 30 outputs the type of the characteristic of the construction result and the depth at which the characteristic of the construction result occurs as the estimation result by the estimation unit 120 for a pile constructed at a certain construction site. In this example, the characteristics of the construction result are "80% slippage" at a depth of 9 m, "45% slippage" at a depth of 10 m, "40% high-level stoppage" at a depth of 13 m, "60% high-level stoppage" at a depth of 14 m, "50% high-level stoppage" at a depth of 15 m, and "50% impenetrable" at a depth of 16 m. The output device 30 may output the difference between the planned excavation time and the predicted excavation time (planned difference).

[0043] The output unit 130 may output the past construction results in the vicinity of the planned construction site and the estimated results at the planned construction site in a format that allows their positions to be compared on a map.

[0044] Furthermore, the output unit 130 may output the type of characteristics of the construction result for each order of soil properties in the depth direction.

[0045] As described above, the pile constructability evaluation system 1 estimates the characteristics of construction results that may occur at a construction site at the design stage or material ordering stage (i.e., the pre-construction stage) of pile construction. Conventionally, advance estimation of the characteristics of construction results that may occur at a construction site was sometimes performed by experienced skilled workers. According to the pile constructability evaluation system 1 configured as described above, advance estimation of the characteristics of construction results can be performed without the help of skilled workers.

[0046] In addition, in the past, at the design stage of pile construction, the results of boring test were printed on paper (or displayed as image data), and the pile construction conditions were then written down on the boring test results.

[0047] Fig. 24 is a diagram showing an example of a conventional boring test result. As shown in the figure, the conventional boring test result has a problem that it cannot be directly analyzed by a computer and it is difficult to share the information. On the other hand, according to the pile constructability evaluation system 1 of this embodiment, the site information generating device 20 generates the site information 221, which is information in a format that can be directly analyzed by a computer, based on the boring test result 211. According to the pile constructability evaluation system 1 configured in this way, the computer can directly analyze, and it is possible to easily share information.

[0048] [When used during on-site pile construction] 14 is a diagram showing a modified example of the functional configuration of the estimation device 10a. The estimation device 10a differs from the above-described estimation device 10 in that it includes an output unit 130a and a comparison unit 140. Note that the same components as those in the above-described estimation device 10 are denoted by the same reference numerals and their description will be omitted. The estimation device 10 a of this modified example is connected to a construction machine 50 .

[0049] FIG. 15 is a diagram showing an example of the flow of operations of the estimating device 10a. (Step S110 ) The comparison unit 140 acquires the estimation result from the estimation unit 120 . (Step S120) The comparison unit 140 acquires the construction information output by the construction machine 50.

[0050] Fig. 16 is an example of construction information output by the construction machine 50. The construction machine 50 excavates piles. In the example shown in the figure, the construction machine 50 constantly measures the rotational force (torque) that the construction machine applies to the piles during construction. The construction machine 50 outputs the rotational force obtained during the excavation of the piles to the estimation device 10a as construction information. In addition to the rotational force, the construction machine 50 constantly measures various information such as the rotation speed and the excavation speed of the pile during construction. The construction machine 50 may also constantly measure the penetration amount of the pile and the pressure force applied to the ground. The various information measured by the construction machine 50 includes a group of information with a wide time span (for example, the penetration amount in one construction) and a group of information with a narrow time span (for example, the instantaneous pressure force). The construction machine 50 also outputs these various pieces of information as construction information to the estimating device 10a. That is, the construction machine 50 outputs the construction information to the estimating device 10a according to the progress of the construction (that is, in real time).

[0051] (Step S130) Returning to FIG. 15, the comparison unit 140 compares the construction information output by the construction machine 50 with the estimation result by the estimation unit 120. As described above, the construction information includes various real-time information such as the rotational force (torque) applied to the pile by the construction machine, the rotation speed, and the excavation speed of the pile. The estimation result by the estimation unit 120 includes various estimation information such as an estimated value of the rotational force (torque) applied to the pile by the construction machine, an estimated value of the rotation speed, an estimated value of the excavation speed of the pile, and an estimation result of the characteristics of the construction result. The comparison unit 140 compares the real-time information with the estimation result estimated in advance. If the comparison result shows that there is a discrepancy between the real-time information and the estimation result, the comparison unit 140 generates a comparison result indicating that the construction by the construction machine 50 is not being performed as estimated. For example, if there is a discrepancy between the excavation speed of the pile indicated by the real-time information and the excavation speed of the pile indicated by the estimation result, the comparison unit 140 generates warning information notifying an abnormality in the excavation speed of the pile as the comparison result. The comparison section 140 outputs the comparison result to the output section 130a.

[0052] (Step S140) The output unit 130a outputs the comparison result by the comparison unit 140 to the output device 30 together with the estimation result by the estimation unit 120 described above.

[0053] FIG. 17 is a diagram showing an example of a comparison result output by the output unit 130a of this modified example. In this example, the vertical axis of the graph indicates depth, and the horizontal axis indicates the magnitude of the N value, the rotational force (torque) applied to the pile by the construction machine, the rotation speed, and the excavation speed of the pile. In this example, the output device 30 outputs the estimation results (i.e., information obtained at the time of design) for each of multiple piles constructed at a certain construction site and the real-time information output by the construction machine 50 (i.e., information obtained during construction) in a comparable format. In this figure, the estimation graph indicates the estimation results obtained at the time of design. The actual pile graph indicates the real-time information output by the construction machine 50.

[0054] According to the pile constructability evaluation system 1 configured as in this modified example, it is possible to present in real time a comparison result between the estimation result at the time of design and the construction status of the pile at the construction site.

[0055] In this modification, the output device 30 may be configured as a display device provided in the operator's seat of the construction machine 50. Also, the output device 30 may be configured as a mobile terminal carried by a supervisor at the pile construction site. According to the pile constructability evaluation system 1 configured in this way, the operator of the construction machine 50 and the construction supervisor can grasp the construction status of the pile in real time.

[0056] Second embodiment The pile constructability evaluation system 1 of this embodiment, like the pile constructability evaluation system 1 of the first embodiment described above, can be used in the design stage or material ordering stage of pile construction, i.e., the pre-construction stage, or in the on-site pile construction stage. First, the case where the pile constructability evaluation system 1 is used in the design stage or material ordering stage of pile construction will be described with reference to Fig. 18. Note that the same reference numerals are used for the same configurations as those of the first embodiment and its modified examples described above, and their description will be omitted.

[0057] 18 is a diagram illustrating an example of a functional configuration of the pile constructability evaluation system 1 according to the second embodiment. The pile constructability evaluation system 1 includes an estimation device 10b, a site information generating device 20, an output device 30, and a dictionary information storage unit 40. The estimation device 10b is a computer device and operates based on a program. The estimation device 10b includes a site information acquisition unit 110, an estimation unit 120b, an output unit 130b, a comparison unit 140, a construction information output unit 150, an abnormality detection unit 160, and a selection unit 170 as its functional units. That is, the estimation device 10b differs from the above-mentioned estimation device 10 in that it includes the estimation unit 120b, the output unit 130b, the construction information output unit 150, the abnormality detection unit 160, and the selection unit 170.

[0058] [Application to pile specification selection] The dictionary information 401b of this embodiment further stores information indicating construction conditions in association with the information. The information indicating the construction conditions includes pile specifications at the time of pile construction at the location where the boring test is carried out (e.g., the construction site) and the specifications of the construction machine. As described above, the specifications of the pile include the material and shape of the pile (e.g., the shape of the blade in the case of a steel pipe pile with blades) and the plate thickness. The specifications of the construction machine also include the manufacturer name, model number, and performance such as maximum torque of the construction machine. The estimation unit 120b estimates construction conditions according to the ground conditions at the construction site, based on the dictionary information 401b and the site information 221 acquired by the site information acquisition unit 110. The output unit 130b outputs to the output device 30 the construction conditions estimated by the estimation unit 120b according to the ground conditions at the construction site.

[0059] Here, the information indicating the construction conditions includes the specifications of the piles actually used at the construction site and the specifications of the construction machine actually used at the construction site. Therefore, the estimation unit 120b can estimate the construction result based on the specifications of the piles and the specifications of the construction machine actually used at the construction site. If the estimation result is not desirable, the estimation unit 120b changes the specifications of the piles and the specifications of the construction machine, and repeats estimating the construction result. By repeating the estimation, the estimation unit 120b can estimate the specifications of the piles and the specifications of the construction machine according to the ground conditions at the site where the boring test is performed (i.e., adapted to the ground conditions at the construction site). Since the estimation unit 120b can estimate the construction conditions according to the ground conditions at the site where the boring test is performed, it can propose pile specifications suitable for the construction site.

[0060] The estimation unit 120 may also have a function of further estimating the cost of driving foundation piles for the facility. In this case, the site information acquisition unit 110 further acquires information indicating the design load of the facility to be constructed at the construction site. Furthermore, the dictionary information 401b further stores information indicating the design load of the facility constructed at the implementation site in association with the design load. The estimation unit 120b further estimates the cost required for driving the foundation piles of the facility based on the dictionary information 401b and the site information 221 acquired by the site information acquisition unit 110. The output unit 130b outputs to the output device 30 the cost of driving the foundation piles for the facility estimated by the estimation unit 120b.

[0061] Here, the specifications of the piles are determined based on the design load of the facility that the piles will support. For example, when the design load of the facility is larger, it is determined that piles with a higher load-bearing specification (e.g., pile diameter and plate thickness, and in the case of steel pipe piles with blades, the blade diameter and blade plate thickness, etc.) should be used. Piles with a higher load-bearing specification are more expensive to install as foundation piles (e.g., pile material cost, processing cost, construction cost at the construction site) than piles with a lower load-bearing specification. The estimation unit 120b estimates pile specifications from the design load of the facility based on the dictionary information 401b and the site information 221, and further estimates the cost of driving the foundation piles of the facility based on the cost information for each pile specification. According to the estimation unit 120b configured in this manner, the cost of driving foundation piles for a facility can be estimated at the design stage based on the design load of the facility. Therefore, work such as revising the facility design based on the estimated costs and changing the design load to reduce the costs associated with driving the facility's foundation piles can be carried out before the foundation piles are constructed.

[0062] [Application to pile production planning] The pile constructability evaluation system 1 of this embodiment can also be used for pile production planning. As an example, there is a case where factories that produce piles are located in multiple regions. The types (varieties) of pile products are diverse depending on the response to differences in ground conditions and load bearing capacity. If all factories were to produce all varieties of piles of such a wide variety, productivity may decrease. It is preferable to be able to narrow down the varieties to be produced by each factory depending on differences in characteristics of each region, such as differences in ground in each region to which the factory is to ship.

[0063] As described above, the estimation device 10b includes the selection unit 170. The selection unit 170 determines pile specifications that are frequently estimated by the estimation unit 120b for each predetermined region from the construction conditions estimated by the estimation unit 120b and the construction site information acquired by the site information acquisition unit 110, and selects specifications of piles to be produced in factories located in each region. The output unit 130b outputs the result selected by the selection unit 170 to the output device 30.

[0064] According to the pile constructability evaluation system 1 configured in this way, the types of piles to be produced at each factory can be narrowed down according to the differences in characteristics of each region. Therefore, according to the pile constructability evaluation system 1, the productivity of piles at the factory can be improved.

[0065] The selection unit 170 may be configured as follows: In other words, when there are multiple factories that produce piles, the selection unit 170 determines pile specifications that are frequently estimated by the estimation unit 120b in common in each region from the construction conditions estimated by the estimation unit 120b and the construction site information acquired by the site information acquisition unit 110, and selects the specifications of piles that are commonly produced by the factories located in each region.

[0066] Moreover, the pile constructability evaluation system 1 may make a proposal as shown in FIG. FIG. 19 is a diagram showing an example of a proposal by the selection unit 170 of this embodiment. As described above, ground conditions are given for each region to which a factory is to ship. In the example shown in the figure, "ground conditions: Kanto" is given to the Kanto region factory, and "ground conditions: Kansai" is given to the Kansai region factory. There are multiple pile types with optimal specifications for "ground conditions: Kanto", and there are multiple pile types with optimal specifications for "ground conditions: Kansai". In this example, the pile types with optimal specifications for "ground conditions: Kanto" include "267-600", "267-750", etc. The pile types with optimal specifications for "ground conditions: Kansai" include "267-500", "267-750", etc.

[0067] In this example, the product type "267-750" is suitable for both "Ground conditions: Kanto" and "Ground conditions: Kansai." Therefore, the product type "267-750" is produced in both the Kanto region factory and the Kansai region factory. The same product type produced in multiple factories in this way is also called "common specification." The decision of which factory should produce piles with common specifications varies depending on the shipping volume and the production situation of each factory. In this example, it is expected that productivity will improve if the piles with common specifications are produced in a concentrated manner in a factory in the Kanto region.

[0068] In this case, if the pile with a high frequency estimated by the estimation unit 120b is the variety "267-750", the selection unit 170 proposes that the variety "267-750" be produced intensively in Kanto region factories. According to the pile constructability evaluation system 1 configured in this manner, pile productivity in factories can be improved.

[0069] [When used during on-site pile construction] Returning to FIG. 18, a case where the estimation device 10b is used at the pile construction stage at the site will be described. As described above, the estimation device 10b includes the site information acquisition unit 110, the estimation unit 120b, and the output unit 130b.

[0070] The site information acquisition unit 110 acquires, as site information 221, construction location information indicating the position of the construction site, and construction site test result information including at least the soil quality at each depth obtained at the construction site and the N value indicating the result of the standard penetration test.

[0071] As described in the first embodiment, the site information 221 is information obtained from a site where pile construction is planned. For example, a boring test is conducted at the site where pile construction is planned. In this boring test, soil quality at each depth and an N value indicating the result of a standard penetration test are obtained. In this case, the site information 221 includes construction location information indicating the position of the site where pile construction is planned, and boring test result 211 (construction site boring result information) obtained as a result of a prior boring test at the site where construction is planned.

[0072] The estimation unit 120b estimates the characteristics of the construction results that will occur at the construction site based on the dictionary information 401b acquired from the dictionary information storage unit 40, the site information 221 acquired by the site information acquisition unit 110, and the learning weight set according to the constructed pile distance.

[0073] Here, the dictionary information 401b is information that stores test result information, information indicating the location where the test was conducted, the occurrence results of the characteristics of the construction results when constructing piles at the location where the dry milk test was conducted, and the distance between piles that have been constructed, in association with each other. The test result information is information including at least the soil quality at each depth obtained in the test and the N value indicating the result of the standard penetration test. The standard penetration test result information 223 described in the first embodiment may be used as the test result information in this embodiment. The completed pile distance is the distance between the position where the standard penetration test was performed at the construction site and the position of the constructed pile. Here, an example of the completed pile distance will be described with reference to FIG.

[0074] Fig. 20 is a diagram showing an example of the constructed pile distance in this embodiment. In the example shown in the figure, 12 piles from pile P1 to pile P12 are driven into the pile construction site. At this pile construction site, a boring test is carried out in advance at test position B, and a boring test result 211 (construction site boring result information) at test position B is obtained. In the following description, the distance between the test position B and the pile Pn (n is a natural number) is referred to as the distance Dn. The distance between the test position B and the pile P1 is the distance D1.

[0075] The construction information output unit 150 acquires construction information output by the construction machine 50 when the pile P1 is constructed. That is, the construction information output unit 150 acquires construction information related to the pile P1. This construction information includes information indicating the construction position of the pile P1. The construction information output unit 150 calculates the distance D1 based on information indicating the test position B acquired in advance and information indicating the construction position of the pile P1 acquired from the construction machine 50. The construction information output unit 150 outputs the calculated distance D1 to the dictionary information storage unit 40 in association with the construction information regarding the pile P1.

[0076] As described above, the dictionary information storage unit 40 stores the dictionary information 401b. The dictionary information 401b is re-learned by a learning device (not shown). In the following description, the re-learning of the dictionary information 401b by the learning device is also referred to as the regeneration of the dictionary information 401b. This learning device is supplied with construction information from the estimation device 10b every time a pile is constructed at the pile construction site by the construction device 50. The learning device regenerates the dictionary information 401b based on the supplied construction information (i.e., the latest construction information obtained immediately after construction at the pile construction site).

[0077] The learning device weights the learning according to the distance Dn calculated by the construction information output unit 150 (that is, the constructed pile distance). Here, for example, at a house pile construction site, there are at most a few test positions B where the boring test is conducted. On the other hand, at a house pile construction site, the number of pile construction positions (i.e., the number of foundation piles) is greater than the number of test positions B where the boring test is conducted. In other words, at a pile construction site, boring test results are not obtained for all pile construction positions. The ground conditions at the construction site are clear from the results of the boring test at test location B, but the further away from test location B, the greater the possibility that the results will deviate from the boring test results. Therefore, the learning device regenerates the dictionary information 401b by increasing the weight of the pile construction results as the distance Dn becomes smaller.

[0078] During the construction of pile P2, the estimation unit 120b estimates the characteristics of the construction results that will occur at the construction site based on the dictionary information 401b acquired from the dictionary information storage unit 40, the site information 221 acquired by the site information acquisition unit 110, and the learning weight set according to the constructed pile distance. The output unit 130b outputs the result of the estimation by the estimation unit 120b.

[0079] According to the pile constructability evaluation system 1 configured in this manner, the dictionary information 401b reflecting the result of the immediately preceding pile construction at the construction site is used to estimate the characteristics of the construction result occurring at the construction site. Therefore, according to the pile constructability evaluation system 1 of this embodiment, even if there is a discrepancy between the estimated results at the time of design and the pile construction status at the construction site, the estimation accuracy of the characteristics of the construction results can be improved by taking into account the results of the most recent pile construction at the construction site.

[0080] (Variation 1) The estimation unit 120b may be configured to estimate the characteristics of the construction result that will occur when the pile is constructed at the position indicated by the construction position information, based further on construction position information indicating the position at the construction site where the pile will be constructed, a planned construction pile distance which is the distance between the position at the construction site where the standard penetration test was conducted and the position at which the pile will be constructed, and a value set according to the relationship between the constructed pile distance and the planned construction pile distance.

[0081] Fig. 21 is a diagram showing a modified example of the constructed pile distance in this embodiment. In the example shown in the figure, at the pile construction site shown in Fig. 20, construction of piles P1 and P2 is completed, and construction of pile P3 is to start. In this example, the position where the pile will be constructed is the position of pile P3. The planned pile construction distance, which is the distance between the position where the standard penetration test was performed at the construction site (i.e., test position B) and the position where the pile will be constructed (i.e., the position of pile P3), is distance D3.

[0082] The estimation unit 120b estimates the characteristics of the construction result when the pile P3 is constructed based on the position of the pile P3 to be constructed, the distance D3, and a value set according to the relationship between the constructed pile distance and the planned pile distance. Here, the value set according to the relationship between the already constructed pile distance and the to-be-constructed pile distance is, for example, a reliability corresponding to the distance Dn. This reliability is set to a smaller value as the distance Dn increases (i.e., as the distance between the construction position of the pile and the test position B increases). The estimation unit 120b estimates the characteristics of the construction results when the pile P3 is constructed based on the distance Dn of the pile to be constructed, i.e., taking into account the reliability of the boring test result performed at the test position B.

[0083] According to the pile construction performance evaluation system 1 configured in this manner, even if there is a discrepancy between the estimated results at the time of design and the pile construction status at the construction site, the accuracy of estimating the characteristics of the construction results can be improved by taking into account the results of the most recent pile construction at the construction site.

[0084] (Variation 2) FIG. 22 is a diagram showing a second modified example of the constructed pile distance of this embodiment. In this modified example, boring tests are performed at a plurality of positions at the pile construction site. In the example shown in the figure, boring tests are performed at two positions, test position B1 and test position B2, at the pile construction site. That is, at this pile construction site, boring test result 211-1 at test position B1 and boring test result 211-2 at test position B2 are obtained. When boring tests are conducted at multiple positions as in this example, there will be multiple distances Dn between each pile and the test position B.

[0085] In this modified example, the estimation unit 120b estimates the characteristics of the construction results when pile P2 is constructed based on the respective distances between multiple boring test positions B (e.g., test position B1 and test position B2) and the pile position (e.g., distance D21 and distance D22 for pile P2).

[0086] As an example, the estimation unit 120b may select, from among the multiple test positions B, a test position B that is close to the position of the pile to be constructed, and estimate the characteristics of the construction result when the pile P2 is constructed.

[0087] The estimation unit 120b may estimate the characteristics of the construction results by weighting the results of the boring tests based on the statistical values ​​of the distances between the boring test positions B and the positions of the piles. The statistical values ​​include values ​​obtained by known statistical calculations, such as the average value, the median value, the standard deviation, and the correlation coefficient.

[0088] [Detection of abnormalities in construction machinery] Next, the abnormality detection of the construction machine 50 by the abnormality detection unit 160 will be described. The abnormality detection unit 160 detects an abnormality of the construction machine 50 based on the degree of deviation between the construction information at the construction site and the result estimated by the estimation unit 120b. The output unit 130b further outputs the result detected by the abnormality detection unit 160.

[0089] 23 is a diagram showing an example of the flow of operations of the estimation device 10b of this embodiment. Descriptions of configurations and operations similar to those of the above-mentioned estimation device 10a will be omitted. (Step S210) The comparison unit 140 acquires the estimation result by the estimation unit 120b. As described above, the estimation result by the estimation unit 120b includes an estimation result based on the construction result of the most recent pile at the construction site. (Step S220) The comparison unit 140 acquires the construction information output by the construction machine 50.

[0090] (Step S230) The comparison unit 140 compares the construction information output by the construction machine 50 with the estimation result by the estimation unit 120. As described above, the construction information includes various real-time information such as the rotational force (torque) applied by the construction machine to the pile, the rotation speed, and the excavation speed of the pile. The estimation result by the estimation unit 120 includes various estimation information such as an estimated value of the rotational force (torque) applied by the construction machine to the pile, an estimated value of the rotation speed, an estimated value of the excavation speed of the pile, and an estimated result of the characteristics of the construction result. The comparison unit 140 compares the real-time information with the estimation result estimated in advance. This estimation result includes an estimation result based on the immediately preceding construction result of the pile at the construction site. That is, the comparison unit 140 compares the estimation result based on the immediately preceding construction result of the pile at the construction site with the real-time information. The comparison section 140 outputs the comparison result to the output section 130b and the abnormality detection section 160. The comparison result output to the output section 130b is similar to the comparison result output to the output section 130a described above, and therefore a description thereof will be omitted.

[0091] In the following description, the abnormality detection unit 160 is assumed to detect an abnormality in the construction machine 50, but is not limited to this. For example, the comparison unit 140 may have the function of the abnormality detection unit 160, and the comparison unit 140 may detect an abnormality in the construction machine 50.

[0092] (Step S240) The abnormality detection unit 160 determines whether there is a discrepancy between the real-time information and the estimation result estimated in advance, based on the comparison result by the comparison unit 140. If the abnormality detection unit 160 determines that there is no discrepancy (Step S240; NO), it ends the process without proceeding to the abnormality determination procedure for the construction machine 50 (Steps S250 to S270). If the abnormality detection unit 160 determines that there is a discrepancy (Step S250; YES), it proceeds to the abnormality determination procedure (Steps S250 to S270).

[0093] (Step S250) The abnormality detection unit 160 judges whether the variation in the N value or layer thickness at the construction site is larger than the estimated result. If the abnormality detection unit 160 judges that the variation is large (Step S250; YES), it judges that the cause of the deviation is the variation in the values ​​at the construction site and not an abnormality in the construction machine 50, and ends the process. If the abnormality detection unit 160 judges that the variation is small (Step S250; NO), it proceeds to step S260.

[0094] (Step S260) The abnormality detection unit 160 judges whether the deviation extends over the entire construction length. If the abnormality detection unit 160 judges that the deviation does not extend over the entire construction length (Step S260; NO), it judges that the deviation is a temporary deviation at the construction site and not an abnormality of the construction machine 50, and ends the process. If the abnormality detection unit 160 judges that the deviation extends over the entire construction length (Step S260; YES), it advances the process to Step S270 and judges that an abnormality of the construction machine 50 exists.

[0095] According to the pile constructability evaluation system 1 configured as in this embodiment, it is possible to present in real time a comparison result between the estimation result at the time of design and the construction status of the pile at the construction site. Moreover, according to the pile constructability evaluation system 1, the construction information output unit 150 outputs the construction information acquired from the construction machine 50 in real time, and updates the dictionary information 401b stored in the dictionary information storage unit 40. The estimation unit 120b estimates construction conditions according to the ground conditions at the construction site, based on the dictionary information 401b and the site information 221 acquired by the site information acquisition unit 110. According to the pile construction performance evaluation system 1 configured in this manner, construction conditions can be estimated based on the construction status of the pile most recently constructed at the construction site, thereby improving the accuracy of the estimated results of the construction conditions (i.e., the degree of agreement with the ground conditions at the construction site).

[0096] Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and appropriate modifications can be made without departing from the spirit of the present invention. The configurations described in the above-mentioned embodiments may be combined.

[0097] Each unit of each device in the above-described embodiments may be realized by dedicated hardware, or may be realized by a memory and a microprocessor.

[0098] In addition, each part of each device may be composed of a memory and a CPU (central processing unit), and the functions of each part of each device may be realized by loading a program for realizing the function of each part into the memory and executing the program.

[0099] In addition, a program for implementing the functions of each unit of each device may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read into a computer system and executed to perform processing by each unit of the control unit. Note that the term "computer system" here includes hardware such as the OS and peripheral devices.

[0100] In addition, if a WWW system is used, the "computer system" also includes the homepage providing environment (or display environment). In addition, "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, and storage devices such as hard disks built into computer systems. Furthermore, "computer-readable recording medium" also includes those that dynamically hold a program for a short period of time, such as communication lines when transmitting a program via a network such as the Internet or a communication line such as a telephone line, and those that hold a program for a certain period of time, such as volatile memory inside a computer system that serves as a server or client in such cases. Furthermore, the above program may be one that realizes part of the above-mentioned functions, or may be one that can realize the above-mentioned functions in combination with a program already recorded in the computer system. [Explanation of symbols]

[0101] 1... pile constructability evaluation system, 10... estimation device, 20... site information generation device, 30... output device, 40... dictionary information storage unit, 50... construction machine, 110... site information acquisition unit, 120... estimation unit, 130... output unit

Claims

1. A site information acquisition unit that acquires, as site information, construction location information indicating the location of a construction site, and construction site test result information including at least the soil quality at each depth obtained at the construction site and the N value indicating the result of a standard penetration test; an estimation unit that estimates the characteristics of the construction results occurring at the construction site based on the site information acquired by the site information acquisition unit and a weighting at the time of learning set according to the completed pile distance; and a dictionary information that stores, in association with each other, test result information including at least the soil quality at each depth obtained in the test and an N value indicating the result of the standard penetration test; information indicating the location where the test was conducted; occurrence results of the characteristics of the construction results during pile construction at the implementation location; pile position information indicating the position of the constructed pile; construction information regarding the construction of the pile output by the construction machine that constructed the pile; and a completed pile distance that is the distance between the position where the standard penetration test was conducted at the construction site and the position of the constructed pile; and an output unit that outputs a result estimated by the estimation unit; A pile constructability evaluation system equipped with

2. The estimation unit estimates the characteristics of the construction result that will occur when the pile is constructed at the position indicated by the construction position information, based on construction position information indicating the position at which the pile will be constructed at the construction site, a planned construction pile distance which is the distance between the position at which the standard penetration test was performed at the construction site and the position at which the pile will be constructed, and a value set according to the relationship between the constructed pile distance and the planned construction pile distance. The pile constructability evaluation system according to claim 1 .

3. an abnormality detection unit that detects an abnormality in the construction machine based on a degree of deviation between the construction information at the construction site and the result estimated by the estimation unit; Furthermore, The output unit further outputs a result detected by the abnormality detection unit. The pile constructability evaluation system according to claim 1 or 2.

4. The dictionary information further stores information indicating construction conditions including pile specifications and construction machine specifications at the time of pile construction at the implementation site in association with each other, The estimation unit further estimates the construction conditions according to a ground condition of the construction site based on the dictionary information and the site information acquired by the site information acquisition unit. The pile constructability evaluation system according to claim 1 .

5. The site information acquisition unit further acquires information indicating a design load of a facility to be constructed at the construction site, The dictionary information further stores information indicating a design load of a facility constructed at the implementation site in association with the information, The estimation unit further estimates a cost required for driving foundation piles for the facility based on the dictionary information and the site information acquired by the site information acquisition unit. The pile constructability evaluation system according to claim 4.

6. In a case where there are a plurality of factories that produce piles, a selection unit is further provided that selects specifications of piles to be produced in the factories located in each region by determining pile specifications that are frequently estimated by the estimation unit for each predetermined region from the construction conditions estimated by the estimation unit and the construction location information acquired by the site information acquisition unit, The output unit further outputs the result selected by the selection unit. The pile constructability evaluation system according to claim 4 or 5.

7. In a case where there are a plurality of factories that produce piles, a selection unit is further provided that selects specifications of piles commonly produced by the factories located in each region by determining pile specifications that are frequently estimated by the estimation unit in common in each region from the construction conditions estimated by the estimation unit and the construction location information acquired by the site information acquisition unit, The output unit further outputs the result selected by the selection unit. The pile constructability evaluation system according to claim 4 or 5.

8. On the computer, A site information acquisition step of acquiring, as site information, construction site information indicating the location of a construction site and construction site test result information including at least the soil quality at each depth obtained at the construction site and the N value indicating the result of a standard penetration test; an estimation step of estimating the characteristics of the construction results occurring at the construction site based on test result information including at least the soil quality at each depth obtained in the test and an N value indicating the result of the standard penetration test, information indicating the location where the test was conducted, the occurrence result of the characteristics of the construction results during pile construction at the implementation location, pile position information indicating the position of the constructed pile, construction information regarding the construction of the pile output by the construction machine that constructed the pile, and the constructed pile distance, which is the distance between the position where the standard penetration test was conducted at the construction site and the position of the constructed pile, the site information acquired by the site information acquisition step, and a learning weight set according to the constructed pile distance; an output step of outputting a result estimated by the estimation step; A program that executes the following.

9. A site information acquisition process for acquiring, as site information, construction location information indicating the location of a construction site, and construction site test result information including at least the soil quality at each depth obtained at the construction site and the N value indicating the result of a standard penetration test; an estimation process for estimating the characteristics of the construction results occurring at the construction site based on test result information including at least the soil quality at each depth obtained in the test and an N value indicating the result of a standard penetration test, information indicating the location where the test was conducted, the occurrence result of the characteristics of the construction results during pile construction at the implementation location, pile position information indicating the position of the constructed pile, construction information regarding the construction of the pile output by the construction machine that constructed the pile, and a constructed pile distance which is the distance between the position where the standard penetration test was conducted at the construction site and the position of the constructed pile, the site information acquired by the site information acquisition process, and a learning weight set according to the constructed pile distance; an output step of outputting the result estimated by the estimation step; A pile constructability evaluation method.

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