JP3128729B2 - How to determine the basic shape - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates, based on the building condition data built in survey data and the ground of the ground at the time of building a low-rise building, which can be formed directly underlying shape of to that basic shape determined Related to the technology of the judgment method.

[0002]

2. Description of the Related Art The foundation design of a low-rise building is based on the N
The survey is conducted comprehensively in consideration of various ground survey data such as values, soil properties, and groundwater levels, and building condition data such as the building area and the number of floors of the building to be constructed. Conventionally, the design of a building foundation to determine whether it is possible to form a foundation directly on the ground and, if the formation of the foundation is not appropriate, what kind of reinforcement method to use, etc. However, comprehensive knowledge and experience of the ground and architecture were required, and ultimately many designers depended on the cans and required skill. Therefore, it was not possible to avoid blurring of judgment at each time.

[0003]

SUMMARY OF THE INVENTION The present invention has been made with a view to solving the above-mentioned problems, and does not require a skilled basic designer to directly rely on a basic designer who designs a foundation. In addition, the provision of a method for determining a basic shape that can be performed by a simple operation based on a quantitative numerical basis that provides the same determination result even when the foundation designer is different is provided. The purpose is.

[0004]

In order to achieve the above object, in the present invention , a method of determining a basic shape which determines the shape of a direct foundation that can be formed on the ground based on survey data of the ground condition or the like. The input screen data for inputting the N value and the N value data file (6a) for recording the input data, the input screen data for inputting the soil / groundwater level data and the input data It has a soil and groundwater level data file (6b) to be recorded, an input screen data for inputting building condition data to be constructed on the ground, and a building condition data file (6c) for recording the input data, Input screen data is sequentially read from each of the data files, and the input screen is sequentially displayed on the display device (4) based on the read data;
Each input item is input on the displayed input screen, and the input data is recorded in each data file. The data of each recorded data file and the basic shape data file (6d) Is the basic shape data recorded in advance in the building condition data.
Based on the one selected at the time of data input, most of the ground
Calculate the amount of large settlement, relative settlement, and the load at each depth
These are set as the maximum allowable subsidence amount and
Relative subsidence, compared to bearing capacity at each depth, the former
By making sure that no
The basic shape selected when entering the building condition data is
It is characterized in that it is determined whether or not it can be formed on a board, and the result of the determination is displayed on the display device.

[0005]

[0006]

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a control configuration of the present invention. In the figure, a CPU 1 controls each operation based on a system program stored in a ROM 2 and performs a predetermined calculation as the calculation means.
In addition, a base shape that can be formed as the basic shape judging means and the basic reinforcing method judging means and a basic reinforcing method are judged. The RAM 3 is a working memory. Further, a CRT 4 is provided as the display device, and a keyboard 5a and a mouse 5b are provided as data input units.

Further, an N-value input screen data of the ground and an N-value data file 6a for recording the input data, a soil / groundwater level input screen data and a soil / groundwater data file for recording the input data 6b, a building condition data file 6c for recording the input screen data of the building condition data to be constructed and the input data, a basic shape data file 6 for storing a plurality of basic shape data
d, a file group 6 composed of a foundation reinforcement condition data file 6e for storing condition data of foundation reinforcement and other files 6f, and a table 7 for calculating the construction cost of the foundation reinforcement method for each foundation shape.

The operation of the present invention will be described below with reference to the flowchart shown in FIG. First, a site information input screen 10 shown in FIG. 3 is read from a predetermined file of the file group 6 and displayed on the CRT 4, and each item is input on this display screen (step S1). This site information includes the topographical classification based on the land condition map, the history of the site, the presence of existing houses, the retaining walls in the site, and the presence of underground buried objects (basement, garage, air raid shelter, wells, large tree roots) directly under the new building, etc. Each item consists of “Yes” and “No” using the mouse 5b.
Click to select one.
The input data is recorded in a predetermined file.

Next, the N-value data input screen 11 shown in FIG.
The N value is input on this screen (step S2). Whether the input N value data is based on the investigation method of the standard penetration test or the Swedish sounding test, an icon 1
1a is selected by clicking, and in the illustrated example, measured values at predetermined depths are input by a standard penetration test method. Further, among the survey points No. 1 to No. 5, data is input only to the survey point No. 1. The input data is recorded in the N-value data file 6a.

Next, the soil / groundwater level data file 6b
From the input screen 12 of the soil and groundwater level data shown in FIG.
Is read out and displayed on the CRT 4, and the soil and groundwater level are input on this screen (step S3). The input of the soil and groundwater level data is performed by designating a data input range (in the illustrated example, a depth of 0.25 m to 9.00 m of the survey point No. 1) with the mouse 5b.
This is performed by clicking on the soil type icon to be input to the specified range from the humus, cohesive soil, and sandy soil icons 12a. By this input, the same color as the color of the selected soil icon 12a is displayed in the specified range. In the illustrated example, sandy soil is input.
The input of the groundwater level is performed by specifying the input range with the mouse 5b. In the illustrated example, the groundwater level is not input as there is no groundwater level.

Next, building condition data is input (step S4). First, the building condition data input screen 13 shown in FIG. 6 is read from the building condition data file 6c and displayed on the CRT 4. On this screen, the area classification and the number of floors of the planned building are displayed. , The short side length of the building and the long side length of the building are input. Also,
The basic shape to be considered is selected. In the illustrated example, the full base 13a and the single solid base 13b are selected by clicking the icons 13a 'and 13b'.
The full base foundation and the single solid foundation are a kind of cloth foundation, and the specifications of the details are recorded in the basic shape data file 6d as the standard adopted basic shape.

When examining a special basic shape other than the standard basic shape, the cloth foundation 13c is selected. When this cloth foundation 13c is considered, the foundation width (a), the rise (b),
(D) and the dimensions of the fitting (c) are input items 13e.
(See FIG. 8 described later).

When the above input is completed, a judgment is made as to the basic shape that can be formed on the ground (step S5). This determination is made based on the N value data, the soil / groundwater level data, the building condition data and the basic shape data recorded in the basic shape data file 6d. The maximum subsidence amount and the relative subsidence amount of the ground concerned are calculated by the calculation formula of This calculation result is displayed on the judgment result display screen 14 (see FIG. 7) displayed from the predetermined data file and displayed on the CRT 4 (step S6). In this screen, for example, when considering the full base foundation 14a selected as the basic shape to be examined (see FIG. 6), as a result of the calculation, the maximum squat amount is 2.87, which is the allowable squat amount. Since it exceeds 1.90, the result is "x". Further, the relative settlement amount, which is the difference between the settlement amounts at a plurality of points, is 0.00, and the allowable relative settlement amount is 0.50, so the result is “「 ”. A similar operation is performed for the single solid foundation 14b. Since the cloth base 14c is not selected as the basic shape to be examined as described above (see FIG. 6), no data is displayed.

Next, the degree of supporting force of the ground is calculated by a predetermined calculation formula. In the illustrated example, 0.25
The supporting force at a depth of (cm) is 1.19, and the loading at this depth is 3.10, and the supporting force at a depth of 0.50 (cm) below the foundation is 2.10. 07, the overlaid load at this depth is 2.99, and since the overlaid load exceeds the supporting force, the result is “x”. Single solid foundation 1
In 4b, the calculation result of the supporting force degree is “O” (only when the result is “X”, numerical details are displayed).
However, since the maximum subsidence amount exceeds the allowable subsidence amount, this portion becomes “x”. Comprehensive judgment is made based on the above calculation results. In the illustrated example, as shown by reference numeral 14d, the judgment result is "x" for both the full base foundation and the single solid foundation, and it is difficult to form the foundation directly on the ground. It can be understood by. In addition, when it is determined that the foundation can be directly formed by the determination of the foundation shape, the considered foundation shape is adopted, so that the determination of the foundation reinforcement method described below does not proceed. The control steps end.

If it is determined that the formation of the foundation is not appropriate directly in the determination of the foundation shape, the process proceeds to the determination of an applicable foundation reinforcement method for each foundation shape. First, condition data for foundation reinforcement is input (step S7). FIG. 8 shows a CRT read from the foundation reinforcement condition data file 6e.
4 is a basic reinforcement condition data input screen 15 displayed on the screen 4, and each item is input on this screen. That is, the building area, the total number of outer foundation pitches as the pitch number of piles arranged on the outer periphery of the building, the total number of internal foundation pitches as the total pitch number of piles supporting the support walls inside the building, and the pile supporting the floor The following items are input: the total number of underwalls as the pitch number, the diameter of the column for wet column improvement as the diameter of the pile used, and the basic packing method as a condition input for the ventilation method that affects the strength of the foundation. You. Further, a cross-sectional view 15a of the considered fabric foundation (FIG. 8)
Is displayed, and the dimensions of the base width (a), the rise (b), (d), and the footing (c) are shown in item 1.
5b. The input data is recorded in the basic reinforcement condition data file 6e.

Next, the judgment of the foundation reinforcement method and the calculation of the construction cost are performed (step S8). This determination is based on the N-value data, soil / groundwater level data, building condition data, foundation shape data, and foundation reinforcement condition data, and is calculated by a predetermined calculation formula. Judge the foundation reinforcement method that can be used for the foundation shape.
Further, in response to the determination of the foundation reinforcement method, the construction cost of the foundation reinforcement method for each foundation shape determined to be employable is calculated using the table 7. FIG. 9 shows an example of the display screen of the table 7. This display screen 16 is an example of the case where the foundation is reinforced using the steel pipe pile method by the rotary press-fitting method.
The pile length of the steel pipe pile is written on the axis, and the number is written on the X axis.
The cost for using 20 steel pipe piles with a pile length of 4.0 m is 4
It will be 26,000 yen. Such a table is prepared for each construction method.

The judgment result and the construction cost of the foundation reinforcement method are displayed on the judgment result display screen 17 shown in FIG. 10 read from a predetermined file of the file group 6 (step S9). In the illustrated example, the determination orders 1 to 4 are determined as the foundation reinforcement methods that can be employed in each foundation shape. The “X” mark in the judgment order column is
This is a foundation reinforcement method for each foundation shape that was determined to be unacceptable. In the example shown in the figure, the judgment order 1 is based on the special cloth,
The foundation is reinforced using a rotary press-fit steel pipe pile method, and the pile length used in this case,
The number of units used per unit area is displayed. At the same time, the cost of the foundation reinforcement, the cost of the foundation to be formed and the cost of the pump truck are displayed.

Finally, as shown in FIG. 11, the detailed result for each method is displayed on the detailed result display screen 18 read from a predetermined file of the file group 6 (step S10). The example shown in the figure is an example in which the foundation is reinforced by the steel pipe pile method by the rotary press-fitting method, and the minimum necessary pile length, pile diameter, and maximum pitch of the building outer foundation are calculated by the above calculation. Number, the maximum pitch number of the foundation inside the building, the maximum pitch number of the underwall, the long-term allowable vertical bearing capacity of the pile obtained from the predetermined arithmetic expression, the total load of the building obtained by integration, the minimum required number of piles, the predetermined arithmetic expression Each item of the expected actual number of piles that is required is displayed.

The foundation shape and the foundation reinforcement method are determined according to the above-described procedure. In addition to the above-described determination result, the foundation designer determines the site information shown in FIG. Considering the problems such as the inability to use large heavy equipment due to the width of the road and the height difference of the site, etc., it is necessary to judge a safe and economical foundation shape or foundation reinforcement method.

[0021]

As described in the foregoing, according to the judgment how the basic shape according to the present invention, without resorting to the can of the underlying designers make a direct basis for the design, without a skilled designer,
Moreover, the judgment of the basic shape with a basis for quantitative numerical value even designer of the foundation are different the same determination result, it is carried out in simple operation of the input data item to the display screen possible, determine how the basic shape can be provided.

Further, in the foundation designer, conventional as is released from becoming can focus on basic design from troublesome operations for determining a basic shape, contributes to efficiency improvement of design work be able to.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a control configuration of the present invention.

FIG. 2 is a flowchart showing the operation of the present invention.

FIG. 3 is a screen for inputting site information.

FIG. 4 is an input screen for N-value data.

FIG. 5 is an input screen for soil / groundwater level data.

FIG. 6 is an input screen for building condition data.

FIG. 7 is a basic shape determination result display screen.

FIG. 8 is a data input screen for basic reinforcement conditions.

FIG. 9 is a display screen of a table for calculating a construction cost of the foundation reinforcement method.

FIG. 10 is a determination result display screen of the foundation reinforcement method.

FIG. 11 is a detailed result display screen.

[Explanation of symbols]

 1, CPU 2, ROM 4, CRT 5a, keyboard 5b, mouse 6, file group 6a, N value data file 6b, soil and groundwater level data file 6c, building condition data file 6d, basic shape data file 6e Foundation reinforcement condition data file 7. Table 10. Site information input screen 11. N value input screen 12. Soil and groundwater level data input screen 13. Building condition data input screen 14. Judgment result display screen 15. Foundation reinforcement condition Data input screen 16, table screen 17, judgment result display screen 18, detailed result display screen

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E02D 27/00-27/08 E02D 1/00-1/08

Claims (1)

(57) [Claims] 1. A method for determining a basic shape that can be formed directly on a ground based on survey data of the ground condition and the like, comprising: input screen data for inputting an N value; Input N value data file for recording data, input screen data for inputting soil / groundwater level data, soil / groundwater level data file for recording input data, and building condition data to be constructed on the ground Input screen data and a building condition data file for recording the input data, and sequentially read the input screen data from each of the data files, and display the input screen on the display device based on the read data. Display, input of each input item is performed on the displayed input screen, and the input data is stored in each of the data files. Recorded, and the data of each data file that is the recording, in basic shape data previously recorded in the basic shape data file
And the maximum subsidence amount, the relative subsidence amount, and each depth of the ground based on the data selected when the building condition data was input.
Calculate the overhead load at
The maximum allowable subsidence amount, the allowable relative subsidence amount,
Confirm that the former does not exceed the latter compared to the strength
To select when entering the building condition data
Determining whether the determined basic shape can be formed on the ground, and displaying the determination result on the display device.