Reinforcement amount calculation system and program

Abstract

To satisfy spatial conditions, obstacle prevention conditions, and strength conditions of a construction part of reinforced concrete and to quickly calculate the number of axial reinforcement bars to be arranged according to the diameter of the axial reinforcement bar by a computer.SOLUTION: A computer 2 (2 and 3) has a function of calculating the number n of axial reinforcing bars to be arranged in a first direction (S7, S8) according to a dimension in the first direction in which the axial reinforcement bars are arranged in a cross section perpendicular to the axial reinforcement bars of concrete portions 120 and 220 in which axial reinforcement bars 121 and 221 are arranged (B in Figs. 2 and 3, and a in Figs. 4 and 5), a dimension in a second direction perpendicular to the first direction in the cross section (a in Figs. 2 and 3, H in Figs. 4 and 5), and a diameter D of the axial reinforcement bar and bar arrangement density conditions required for the cross section (minimum limit reinforcement bar ratio p, longest limit spacing x).SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention , supplement The present invention relates to a system and program for calculating strong muscle mass. [Background technology]

[0002] As described in Patent Document 1, various reinforcing bars are arranged within a reinforced concrete member. In addition, for reasons of fit and durability, it is common to pour additional concrete at the top and bottom of concrete members (hereinafter referred to as structural concrete) that are necessary for structural strength. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-203378 A Summary of the Invention [Problem to be solved by the invention]

[0004] The amount of reinforcing steel, which depends on the diameter and number of reinforcing bars in reinforced concrete, is generally calculated individually for each structure, taking into consideration the ability to prevent problems caused by cracks, etc. (hereinafter referred to as the problem prevention conditions), strength conditions, spatial conditions, workability, economics, etc. In particular, in order to meet the requirements for workability and economics, it is necessary to make detailed calculations for each part of the structure, which is cumbersome.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and its object is to quickly calculate by computer the number of axial reinforcement bars to be arranged according to their diameter while satisfying the spatial conditions, interference prevention conditions, and strength conditions of the reinforced concrete construction section. [Means for solving the problem]

[0006] The following symbols and parameter symbols in parentheses are referred to in the following description of the embodiments and drawings. The invention described in claim 1 is A reinforcing bar amount calculation system including a computer (2), The computer (2), A first process of receiving an input of a width (B) of a reinforced concrete beam from a user via an input device (25); A second process of receiving an input of a thickness (a) of an additional concrete portion to be added above or below the beam from the user via the input device (25); a third process for receiving settings from the user via the input device (25) of a diameter (D) of the axial reinforcement of the added concrete portion, a cover thickness (b) on the side surface of the added concrete portion, a diameter (Da) of the rib reinforcement of the added concrete portion, a minimum limit reinforcement ratio (p) indicating a minimum limit of the ratio of the total cross-sectional area of ​​the axial reinforcement to the cross-sectional area of ​​the added concrete portion, and a maximum limit interval (x) indicating a maximum limit of the interval of the axial reinforcement arranged in the width direction of the beam; The number (n) of reinforcement bars is obtained by multiplying the width (B) received in the first process, the thickness (a) received in the second process, the minimum limit reinforcement ratio (p) received in the third process, and the reciprocal of the cross-sectional area (A) of the reinforcement bars, which is determined from the diameter (D) of the reinforcement bars received in the third process, and rounding up the product to an integer. 1 ) a fourth process of calculating The number (n) of reinforcement bars is calculated by multiplying the value obtained by subtracting twice the cover thickness (b) received in the third process, twice the diameter (Da) of the rib reinforcement bars received in the third process, and the diameter (D) of the axial reinforcement bars received in the third process from the width (B) received in the first process by the reciprocal of the maximum limit interval (x) received in the third process, rounding up the product to an integer and adding 1 to the product. 2 A fifth process of calculating The number (n 1 ) and the number calculated in the fifth process (n 2 ) and a sixth process of comparing As a result of the comparison in the sixth process, the number (n 1 ) is the number (n 2 ), the number (n 1 ) is displayed on the display device (26) as the number of axial reinforcement bars arranged in the width direction of the beam, otherwise, the number (n 2 A seventh process of displaying on the display device the number of axial reinforcements arranged in the width direction of the beam. Run This is a system for calculating the amount of reinforcement.

[0008] The invention described in claim 2 is A reinforcing bar amount calculation system including a computer (2), A first process of receiving an input of a beam depth (H) of a reinforced concrete structure from a user via an input device (25); A second process of receiving an input of a thickness (a) of an additional concrete portion to be added to the side portion of the beam from the user via the input device (25); a third process for receiving settings from the user via the input device (25) of a diameter (D) of the axial reinforcement of the added concrete portion, a cover thickness (b) on the side surface of the added concrete portion, a diameter (Da) of the rib reinforcement of the added concrete portion, a minimum limit reinforcement ratio (p) indicating a minimum limit of the ratio of the total cross-sectional area of ​​the axial reinforcement to the cross-sectional area of ​​the added concrete portion, and a maximum limit interval (x) indicating a maximum limit of the interval of the axial reinforcement arranged in the thickness direction of the added concrete portion; The number (n) of beams is calculated by multiplying the beam depth (H) received in the first process, the thickness (a) received in the second process, the minimum limit reinforcement ratio (p) received in the third process, and the reciprocal of the cross-sectional area (A) of the axial reinforcement, which is determined from the diameter (D) of the axial reinforcement received in the third process, and rounding up the product to an integer. 1 ) a fourth process of calculating The number (n) of reinforcement bars is calculated by multiplying the value obtained by subtracting the cover thickness (b) received in the third process, the diameter (Da) of the rib reinforcement bars received in the third process, and half the diameter (D) of the axial reinforcement bars received in the third process from the thickness (a) received in the second process by the reciprocal of the maximum limit interval (x) received in the third process, and rounding up the product to an integer. 2 A fifth process of calculating The number (n 1 ) and the number calculated in the fifth process (n 2 ) and a sixth process of comparing As a result of the comparison in the sixth process, the number (n 1 ) is the number (n 2 ), the number (n 1 ) is displayed on the display device (26) as the number of axial reinforcement bars arranged in the thickness direction of the added concrete portion, otherwise, the number (n 2 ) on the display device (26) as the number of axial reinforcement bars arranged in the thickness direction of the added concrete portion; Run This is a system for calculating the amount of reinforcement.

[0010] The invention described in claim 3 is Computer (2), A first process of receiving an input of a width (B) of a reinforced concrete beam from a user via an input device (25); A second process of receiving an input of a thickness (a) of an additional concrete portion to be added above or below the beam from the user via the input device (25); a third process for receiving settings from the user via the input device (25) of a diameter (D) of the axial reinforcement of the added concrete portion, a cover thickness (b) on the side surface of the added concrete portion, a diameter (Da) of the rib reinforcement of the added concrete portion, a minimum limit reinforcement ratio (p) indicating a minimum limit of the ratio of the total cross-sectional area of ​​the axial reinforcement to the cross-sectional area of ​​the added concrete portion, and a maximum limit interval (x) indicating a maximum limit of the interval of the axial reinforcement arranged in the width direction of the beam; The number (n) of reinforcement bars is obtained by multiplying the width (B) received in the first process, the thickness (a) received in the second process, the minimum limit reinforcement ratio (p) received in the third process, and the reciprocal of the cross-sectional area (A) of the reinforcement bars, which is determined from the diameter (D) of the reinforcement bars received in the third process, and rounding up the product to an integer. 1 ) a fourth process of calculating The number (n) of reinforcement bars is calculated by multiplying the value obtained by subtracting twice the cover thickness (b) received in the third process, twice the diameter (Da) of the rib reinforcement bars received in the third process, and the diameter (D) of the axial reinforcement bars received in the third process from the width (B) received in the first process by the reciprocal of the maximum limit interval (x) received in the third process, rounding up the product to an integer and adding 1 to the product. 2 A fifth process of calculating The number (n 1 ) and the number calculated in the fifth process (n 2 ) and a sixth process of comparing As a result of the comparison in the sixth process, the number (n 1 ) is the number (n 2 ), the number (n 1 ) is displayed on the display device (26) as the number of axial reinforcement bars arranged in the width direction of the beam, otherwise, the number (n 2 A seventh process of displaying on the display device the number of axial reinforcements arranged in the width direction of the beam. Run It is a program.

[0012] The invention described in claim 4 is Computer (2), A first process of receiving an input of a beam depth (H) of a reinforced concrete structure from a user via an input device (25); A second process of receiving an input of a thickness (a) of an additional concrete portion to be added to the side portion of the beam from the user via the input device (25); a third process for receiving settings from the user via the input device (25) of a diameter (D) of the axial reinforcement of the added concrete portion, a cover thickness (b) on the side surface of the added concrete portion, a diameter (Da) of the rib reinforcement of the added concrete portion, a minimum limit reinforcement ratio (p) indicating a minimum limit of the ratio of the total cross-sectional area of ​​the axial reinforcement to the cross-sectional area of ​​the added concrete portion, and a maximum limit interval (x) indicating a maximum limit of the interval of the axial reinforcement arranged in the thickness direction of the added concrete portion; The number (n) of beams is calculated by multiplying the beam depth (H) received in the first process, the thickness (a) received in the second process, the minimum limit reinforcement ratio (p) received in the third process, and the reciprocal of the cross-sectional area (A) of the axial reinforcement, which is determined from the diameter (D) of the axial reinforcement received in the third process, and rounding up the product to an integer. 1 ) a fourth process of calculating The number (n) of reinforcement bars is calculated by multiplying the value obtained by subtracting the cover thickness (b) received in the third process, the diameter (Da) of the rib reinforcement bars received in the third process, and half the diameter (D) of the axial reinforcement bars received in the third process from the thickness (a) received in the second process by the reciprocal of the maximum limit interval (x) received in the third process, and rounding up the product to an integer. 2 A fifth process of calculating The number (n 1 ) and the number calculated in the fifth process (n 2 ) and a sixth process of comparing As a result of the comparison in the sixth process, the number (n 1 ) is the number (n 2 ), the number (n 1 ) is displayed on the display device (26) as the number of axial reinforcement bars arranged in the thickness direction of the added concrete portion, otherwise, the number (n 2 ) on the display device (26) as the number of axial reinforcement bars arranged in the thickness direction of the added concrete portion; Run It is a program. Effect of the Invention

[0046] According to the present invention, the number of axial reinforcement bars to be arranged according to their diameter can be quickly calculated by a computer while satisfying the spatial conditions, interference prevention conditions, and strength conditions of the reinforced concrete construction area. [Brief description of the drawings]

[0047] [Figure 1] 1 is a block diagram showing a configuration of a reinforcement amount calculation system for reinforced concrete according to one embodiment of the present invention. [Diagram 2] 1 is a cross-sectional view of a beam according to an example of an object to which the present invention can be applied and an additional concrete portion to be constructed on the upper end of the beam. [Diagram 3] FIG. 3 is an enlarged cross-sectional view of the added concrete portion of FIG. 2. [Figure 4] 1 is a cross-sectional view of a beam and an additional concrete portion constructed on the side of the beam, according to an example of an object to which the present invention can be applied. [Diagram 5] FIG. 5 is an enlarged cross-sectional view of the added concrete portion of FIG. 4. [Figure 6] 4 is a flowchart showing the processing executed by the reinforcement amount calculation system for reinforced concrete according to one embodiment of the present invention. [Figure 7] FIG. 2 is a display screen diagram showing an example of a calculation result displayed and output by the reinforcement amount calculation system for reinforced concrete according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0048] Hereinafter, the embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below are subject to various technically preferable limitations for carrying out the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples.

[0049] [System Overview] The reinforcement amount calculation system 1 for reinforced concrete in this embodiment is configured by a personal computer (hereinafter referred to as “PC”) 2 alone or in cooperation with a network server 3 . The PC 2 includes a central processing unit (CPU) 21, a read only memory (ROM) 22, a random access memory (RAM) 23, a storage unit 24, an input unit 25, a display unit 26, a communication unit 27, and the like. PC 2 may be in any form, such as a notebook type, a tablet type, a smartphone, or the like, and the hardware form is not important.

[0050] The CPU 21 reads out a program for calculating the amount of reinforcing bars in reinforced concrete from the ROM 22, loads it in the RAM 23, and executes calculation processing according to the program for calculating the amount of reinforcing bars in reinforced concrete in response to an input from the input unit 25. The storage unit 24 is configured, for example, with a non-volatile semiconductor memory (so-called flash memory), a hard disk drive, etc. The storage unit 24 stores various data. The input unit 25 corresponds to various operation input devices such as a keyboard, a mouse, or a touch sensor. The display unit 26 corresponds to an image display device such as a liquid crystal display (LCD) or an EL display. The communication unit 27 is composed of a communication control card such as a LAN (Local Area Network) card, and transmits and receives various data between external devices (e.g., a network server 3 and other computers) connected to a communication network 4 such as a LAN, a WAN (Wide Area Network), or the Internet. The database required to operate the reinforcement amount calculation system for reinforced concrete is constructed in the memory unit 24 in the case of a system using only the PC 2, and in the case of a system linked to the network server 3, it is constructed in the network server 3. Even in the latter case, some data is stored in the memory unit 24. The memory unit 24 is also used to store data downloaded from the network server 3. In the case of a system that cooperates with a network server 3, the calculation processing can be replaced by the CPU 21 and appropriately performed by the network server 3.

[0051] [Calculation of reinforcing bar amount 1: When adding reinforcement to the top or bottom end of the beam] Here, a method for calculating the amount of reinforcing bar will be explained using an example in which additional concrete is placed at the top or bottom of a beam as structural concrete. The reinforcement amount calculation system 1 (CPU 21) for reinforced concrete in this embodiment follows a calculation method described below. 2 and 3 show a case where an additional concrete portion 120 is constructed at the upper end of a beam 110 as structural concrete. The calculation method is the same when an additional concrete portion is constructed at the lower end of the beam 110. The added concrete section 120 is a concrete section to be calculated in which axial reinforcement bars 121, 121... are arranged. The cross section shown in Fig. 2 and Fig. 3 corresponds to a cross section perpendicular to the axial reinforcement bars 121. The added concrete section 120 with width B and thickness a is constructed on the upper end of the beam 110 with the same width B. The direction of width B, which is the horizontal direction, is the first direction in which the axial reinforcement bars 121 are arranged. Therefore, the width B is the dimension of the added concrete section 120 in the first direction. The second direction perpendicular to the first direction in the cross section is the direction of thickness a. Therefore, thickness a is the dimension of the added concrete section 120 in the second direction. Stir reinforcement bars 122 are arranged around the axial reinforcement bars 121 in a direction perpendicular to the axial reinforcement bars 121. As described below, the CPU 21 calculates the number n of axial reinforcements 121 to be arranged in the first direction, based on the width B, thickness a, diameter D of the axial reinforcement 121, and the reinforcement density conditions. The definition of each parameter is as follows: a: Thickness of the upper or lower end of the added concrete portion 120 B: Beam width (= dimension in the first direction) b: Cover thickness of the beam side of the additional concrete part 120 A: Cross-sectional area of ​​axial reinforcement bar 121 (per piece) (determined by nominal diameter d) D: Outer diameter of axial reinforcement bar 121 (determined by nominal diameter d) Da: The outermost diameter of the rib reinforcement bar 122 (determined by the nominal diameter da) n: Number of axial reinforcement bars 121 in the first direction p: Reinforcement ratio indicated by the total cross-sectional area of ​​the axial reinforcement 121 to the cross-sectional area of ​​the additional concrete part 120, which is the minimum limit reinforcing ratio (reinforcement density condition) x: The maximum spacing between the axial reinforcement bars in the first direction (reinforcement density condition)

[0052] In this embodiment, the minimum limit rebar ratio p and the maximum limit interval x are applied as the reinforcing bar density conditions. In other words, the reinforcing bar density is set to be equal to or greater than the minimum limit reinforcing bar ratio p, and the reinforcing bar interval density is set to be equal to or less than the maximum limit interval x. This satisfies the required failure prevention conditions.

[0053] The minimum limit reinforcement ratio p is calculated using the following formula (1).

[0054]

number

[0055] The minimum number of bars n that satisfies the minimum limit of reinforcement ratio p 1 is expressed as the following equation (2), which is obtained by transforming equation (1) with respect to n to get a natural number equal to n, or a natural number with the decimal point rounded up if n is not divisible by n.

[0056]

number

[0057] Also, the minimum number n that satisfies the maximum limit interval x 2is expressed as follows:

[0058]

number

[0059] In the parentheses of the first term of formula (3), 2b and 2Da are subtracted from the width B because the inside of the rib reinforcement 122 is set as the reinforcing range of the axial reinforcement 121. Furthermore, D is subtracted because the condition is that the axial reinforcement 121, 121 is arranged at both ends, and the center of the axial reinforcement 121, 121 at both ends is set as the starting point. In other words, the maximum limit interval x is calculated between the starting points. In this case, the inside diameter of the bent portion of the rib reinforcement 122 may be subtracted instead of D. Even in this case, the calculation can be performed with the center of the axial reinforcement 121, 121 at both ends as the starting point. However, it is safer to subtract the outermost diameter D of the axial reinforcement 121 as in this embodiment when calculating the maximum limit interval x. In addition, 1 is added to the second term of equation (3) because this is a condition for arranging axial reinforcement bars 121, 121 at both horizontal ends of the added concrete section 120 as shown in Figure 3, and also to prevent any parts with spacing longer than the maximum limit spacing x from occurring when the reinforcement bars are actually arranged.

[0060] The computer (CPU21) performs the above calculations and determines the minimum number of bars n that satisfies the minimum limit rebar ratio p. 1 and the minimum number n that satisfies the maximum limit interval x 2 The larger of the two is calculated as the number n of axial reinforcement bars 121 to be arranged in the first direction. This is expressed as the following formula (4).

[0061]

number

[0062] Table I summarizes examples of calculations according to the above calculation method. Beam width B was calculated for six different widths ranging from 250 to 500 mm. The thickness a of the added concrete portion was calculated for nine different thicknesses ranging from 100 to 500 mm. The outermost diameter D of the axial reinforcement bar 121 was calculated for three types: 18, 21, and 25 mm. The cover thickness b of the beam side is 40 [mm], the outermost diameter Da of the rib reinforcement 122 is 14 [mm] (nominal diameter da = D13), the minimum limit reinforcement ratio p is 0.4%, and the maximum limit interval x is 200 [mm]. Column 125 in Table I shows the number n of axial reinforcement bars 121 to be arranged in the first direction. For example, when B=250, D=18, and a=350, n=2, so two bars need to be arranged. However, if only a is changed to 400, n=3, and if only B is changed to 450, n=4, so the number of bars to be arranged changes and the reinforcing bar density condition is satisfied.

[0063] [Table 1]

[0064] [Calculation of reinforcement amount 2: When adding reinforcement to the side of the beam] Next, a method for calculating the amount of reinforcing bar will be explained using an example in which additional concrete is placed on the side of a beam as structural concrete. The reinforcement amount calculation system 1 (CPU 21) for reinforced concrete in this embodiment follows a calculation method described below. 4 and 5 show the case where an additional concrete portion 220 is constructed on the side of a beam 210 serving as structural concrete. The additional concrete part 220 is a concrete part to be calculated in which axial reinforcement bars 221, 221... are arranged. The cross sections shown in Figs. 4 and 5 correspond to cross sections perpendicular to the axial reinforcement bars 221. An additional concrete part 220 with a beam depth of H and a thickness a is constructed on the side of a beam 210 with the same beam depth H. The direction of the thickness a, which is the horizontal direction, is the first direction in which the axial reinforcement bars 221 are arranged. Therefore, the thickness a is the dimension of the additional concrete part 220 in the first direction. The second direction perpendicular to the first direction in the cross section is the direction of the beam depth H. Therefore, the beam depth H is the dimension of the additional concrete part 220 in the second direction. Around the axial reinforcement bars 221, rib reinforcement bars 222 are arranged in a direction perpendicular to the axial reinforcement bars 221. The axial reinforcement bars 221 are arranged horizontally at the upper and lower ends of the additional concrete part 220. Width stop bars 223 are arranged in between. As described below, the CPU 21 calculates the number n of axial reinforcements 221 to be arranged in the first direction, according to the beam depth H, the thickness a, the diameter D of the axial reinforcement 221, and the reinforcement density conditions. The definition of each parameter is as follows: a: Thickness of the lateral concrete portion 220 (= dimension in the first direction) B: Liang b: Cover thickness of the beam side of the additional concrete part 220 A: Cross-sectional area of ​​axial reinforcement 221 (per piece) (determined by nominal diameter d) D: Outer diameter of axial reinforcement bar 221 (determined by nominal diameter d) Da: The outermost diameter of the rib reinforcement bar 222 (determined by the nominal diameter da) n: Number of axial reinforcement bars 221 in the first direction *In this example, the axial reinforcement bars 221 at the upper and lower ends are treated separately. p: Reinforcement ratio indicated by the total cross-sectional area of ​​the axial reinforcement 221 relative to the cross-sectional area of ​​the added concrete section 220, which is the minimum limit reinforcement ratio (reinforcement density condition) *In this example, the axial reinforcement 221 is treated separately at the upper and lower ends. x: The maximum spacing between the axial reinforcement bars in the first direction (reinforcement density condition)

[0065] In this embodiment, the minimum limit rebar ratio p and the maximum limit interval x are applied as the reinforcing bar density conditions. In other words, the reinforcing bar density is set to be equal to or greater than the minimum limit reinforcing bar ratio p, and the reinforcing bar interval density is set to be equal to or less than the maximum limit interval x. This satisfies the required failure prevention conditions.

[0066] The minimum limit reinforcement ratio p is calculated using the following formula (5).

[0067]

number

[0068] The minimum number of bars n that satisfies the minimum limit of reinforcement ratio p 1 By transforming equation (5) with respect to n, we get a natural number equal to n, or a natural number with the decimal point rounded up if n is not divisible by n, which can be expressed as the following equation (6).

[0069]

number

[0070] Also, the minimum number n that satisfies the maximum limit interval x 2 is expressed as the following equation (7).

[0071]

number

[0072] In the parentheses of the first term of formula (7), b and Da are subtracted from the thickness a because the inside of the rib reinforcement 222 is set as the range of the axial reinforcement 221. Furthermore, D / 2 is subtracted because the condition is that the axial reinforcement 221 is arranged at the side end in the direction of pouring, and the center of the axial reinforcement 221 at the side end and the side surface 211 of the beam 210 that contacts the poured concrete part 220 are set as the starting points. In other words, the number of maximum limit intervals x between the starting points is calculated. When actually arranging the reinforcement, the side surface 211 of the beam 210 is set as one of the starting points, and no part of the interval longer than the maximum limit interval x is generated. In other words, since there is already a reinforcing bar inside the beam 210, the side surface 211 and the nearest axial reinforcement are treated as the interval. In this case, the inside radius of the bend of the rib reinforcement 222 may be subtracted instead of D / 2. Even in this case, the calculation can be performed starting from the center of the axial reinforcement 221 at the side end and the side surface 211 of the beam 210 that contacts the added concrete portion 220. However, it is safer to calculate the maximum limit interval x by subtracting D / 2, which is half the outer diameter of the axial reinforcement 221, as in this embodiment.

[0073] The computer (CPU21) performs the above calculations and determines the minimum number of bars n that satisfies the minimum limit rebar ratio p. 1 and the minimum number n that satisfies the maximum limit interval x 2 The larger of the two is calculated as the number n of axial reinforcement bars 221 to be arranged in the first direction. This is expressed as the following formula (8).

[0074]

number

[0075] Table II summarizes examples of calculations according to the above calculation method. The beam depth H was calculated for six types ranging from 450 to 700 mm. The thickness a of the added concrete portion was calculated for nine different thicknesses ranging from 100 to 500 mm. The outermost diameter D of the axial reinforcement bar 221 was calculated for three types: 18, 21, and 25 mm. The cover thickness b of the beam side is 40 [mm], the outermost diameter Da of the rib reinforcement 222 is 14 [mm] (nominal diameter da = D13), the minimum limit reinforcement ratio p is 0.4%, and the maximum limit interval x is 200 [mm]. Column 225 in Table II shows the number n of axial reinforcement bars 221 to be arranged in the first direction. For example, when H=450, D=18, and a=300, n=3, and three bars are required. However, if only a is changed to 350, n=4, and if only H is changed to 700, n=5, so the number of bars to be arranged changes and the reinforcing bar density condition is satisfied.

[0076] [Table 2]

[0077] [Example of processing operation and result display] Next, an example of the processing operation of the reinforcement amount calculation system 1 for reinforced concrete according to the present embodiment and an example of displaying the calculation output result will be disclosed with reference to the flowchart in FIG. The user inputs the beam width B or the beam depth H to the PC 2 via the input unit 25 (step S1). The user inputs the thickness a to the PC 2 via the input unit 25 (step S2). Steps 1 and S2 may be performed in any order.

[0078] Next, various parameters are set (step S3). The parameters here are the diameter D of the axial reinforcement, the cover thickness b of the beam side, the diameter Da of the rib reinforcement, the minimum limit reinforcement ratio p, and the maximum limit interval x. If the default values ​​are to be left unchanged, proceed to the next step. If the user wishes to change the settings, the CPU 21 presents a setting change menu and allows the user to input values ​​or select candidates. Next, CPU21 finds the minimum number of bars n that satisfies the minimum limit rebar ratio p. 1 (Step S4), and the minimum number n that satisfies the longest limit interval x is calculated. 2 Calculate (step S5). In the next step S6, the CPU 21 2 From 1 When n is large 1is displayed (step S7), otherwise n 2 The calculation output result is displayed (step S8). For example, as shown in Fig. 7, the calculation output result is displayed on the display unit 26. It is preferable that the calculation output result also includes the setting values ​​of various parameters.

[0079] The input fields and the display format of the calculation output results may be in the form of a table such as those shown in Tables I and II, or in any other form. Although Fig. 7 shows an example in which one calculation result n corresponding to one calculation condition is displayed, it is also possible to process multiple calculation conditions simultaneously and display and output the calculation results n corresponding to each calculation condition.

[0080] [Summary, etc.] According to the above-described embodiment of the system for calculating the amount of reinforcement in reinforced concrete, the number of axial reinforcement bars to be arranged according to their diameter can be quickly calculated by computer while satisfying the spatial conditions and interference prevention conditions of the construction section of the reinforced concrete, thereby making the design and construction of reinforced concrete more efficient.

[0081] In the above embodiment, the reinforcement density condition includes both the minimum limit reinforcement ratio and the maximum limit interval, but it may include one of them and not the other. A third reinforcement density condition other than the minimum limit reinforcement ratio and the maximum limit interval may be further included. In the above embodiment, the reinforcement density condition for satisfying the obstacle prevention condition has been described, but the reinforcement density condition for satisfying the strength condition for structural resistance may also be applied. In the above embodiments, the target is concrete sections poured onto the upper end, lower end or sides of a beam, but the target may also be concrete sections that constitute any part of a structure, such as the upper surface of a foundation or the side of a column.

[0082] In the above embodiment, the PC 2 is described as functioning independently to complete the process, but the PC 2 and the network server 3 may cooperate with each other so that some of the processes are performed by the network server 3. For example, the PC 2 may be mainly responsible for input and result display. Furthermore, the number n may be calculated based on the input data (S1, S2) and the setting parameters (S3), or may be calculated by searching and reading out results that have already been calculated in a database based on the input data (S1, S2) and the setting parameters (S3). 〔summary〕 The above description of the embodiments discloses the following invention. (A) The above embodiment has been described as a reinforcement mass calculation system for calculating the reinforcement mass of axial reinforcement bars arranged in reinforced concrete by a computer, as shown in, for example, Figures 1 to 7, Table I, Table II, formulas (1) to (4), or formulas (5) to (8), etc., in which the computer 2 (2 and 3) has a function of calculating (S7, S8) the number n of axial reinforcement bars to be arranged in the first direction in accordance with the dimension (B in Figures 2 and 3, a in Figures 4 and 5) in a first direction in which the axial reinforcement bars are arranged in a cross section perpendicular to the axial reinforcement bars of the concrete sections 120, 220 in which the axial reinforcement bars 121, 221 are arranged, the dimension (a in Figures 2 and 3, H in Figures 4 and 5) in the same cross section perpendicular to the axial reinforcement bars, the diameter D of the axial reinforcement bars, and the reinforcement density conditions p and x required for the same cross section. According to (A), the number of axial reinforcement bars to be arranged in the first direction is calculated based on the dimension of the axial reinforcement bars in the first direction, the dimension of the axial reinforcement bars in the same cross section in a second direction perpendicular to the first direction, and the diameter of the axial reinforcement bars, so that a number that is suitable for the spatial conditions of the reinforced concrete construction section can be calculated. According to (A), the number of axial reinforcement bars to be arranged in the first direction is calculated according to the reinforcing bar density conditions, so that a number that satisfies certain failure prevention conditions can be calculated. Therefore, the number of axial reinforcement bars to be arranged according to their diameter can be quickly calculated by a computer while satisfying the spatial conditions, interference prevention conditions, and strength conditions of the reinforced concrete construction area. (B) For example, as shown in FIG. 6, formula (2) or formula (6), the computer 2 (2 and 3) sets one of the reinforcing bar density conditions as a minimum limit reinforcing bar ratio p, which is a reinforcing bar ratio indicated by the total cross-sectional area of ​​the axial reinforcement to the area of ​​the cross section, and sets the minimum number n that satisfies the minimum limit reinforcing bar ratio. 1 The present invention discloses a system for calculating the amount of reinforcing bar in reinforced concrete (A) having a function of calculating (S4) the amount of reinforcing bar in reinforced concrete. According to (B), the computer 2 (2 and 3) calculates the number n of axial reinforcement bars to be arranged in the first direction, with one of the reinforcing bar density conditions being the minimum marginal reinforcement ratio, i.e., with the condition that the minimum marginal reinforcement ratio is secured by the axial reinforcement bars. At that time, the calculation is based on the minimum number that satisfies the minimum marginal reinforcement ratio, so it is possible to calculate the number n that satisfies certain interference prevention conditions without impairing workability and economy. (C) In the above embodiment, as shown in, for example, FIG. 6, formula (3) or formula (7), the computer 2 (2 and 3) sets one of the reinforcing bar density conditions as the maximum limit interval x, which is the interval at which the axial reinforcement bars can be arranged, and sets the minimum number n that satisfies the maximum limit interval. 2 The present invention discloses a system for calculating the amount of reinforcing bar in reinforced concrete (A) having a function of calculating (S5) the amount of reinforcing bar in reinforced concrete. According to (C), the computer 2 (2 and 3) calculates the number n of axial reinforcement bars to be arranged in the first direction, with one of the reinforcing bar density conditions being the maximum interval, i.e., with the maximum interval being the longest possible, and the calculation is based on the minimum number that satisfies the maximum interval limit, so that it is possible to calculate the number n that satisfies certain interference prevention conditions while not impairing workability or economic efficiency. (D) In ​​the above embodiment, as shown in, for example, FIG. 6 and formulas (2) and (3) or (6) and (7), the computer 2 (2 and 3) sets one of the reinforcing bar density conditions as a reinforcing bar ratio indicated by the total cross-sectional area of ​​the axial reinforcement bars relative to the area of ​​the cross section, which is a minimum limit reinforcing bar ratio p, and sets another of the reinforcing bar density conditions as the interval at which the axial reinforcement bars can be arranged, which is a maximum limit interval x, and sets the minimum number n of reinforcing bars that satisfies the minimum limit reinforcing bar ratio p. 1 and the minimum number n that satisfies the longest limit interval. 2 The present invention discloses a system for calculating the amount of reinforcing bars in reinforced concrete (A), which has the function of calculating (S4, S5) the amount of reinforcing bars in reinforced concrete. According to (D), the computer 2 (2 and 3) calculates the number n of axial reinforcement bars to be arranged in the first direction, with the minimum limit rebar ratio and the maximum limit interval as the reinforcing bar density conditions. At that time, the calculation is based on the minimum number of bars that satisfy the minimum limit rebar ratio and the minimum number that satisfy the maximum limit interval, so it is possible to calculate the number n that satisfies higher-level obstacle prevention conditions without impairing workability and economy. (E) In the above embodiment, as shown in, for example, FIG. 6, formula (4) or formula (8), the computer 2 (2 and 3) calculates the minimum number n of reinforcement bars that satisfies the minimum limit rebar ratio p. 1 and the minimum number n that satisfies the longest limit interval x. 2 The present invention discloses a system for calculating the amount of reinforcement in reinforced concrete (D) having a function of calculating (S6-S8) the greater of the above as the number n of axial reinforcement bars to be arranged in the first direction. According to (E), computer 2 (2 and 3) calculates the greater of the minimum number that satisfies the minimum limit reinforcement ratio or the minimum number that satisfies the maximum spacing as the number of axial reinforcement bars to be arranged in the first direction. Therefore, the calculation load can be reduced by limiting the reinforcement density conditions to only the minimum limit reinforcement ratio and the maximum spacing, and a number n can be calculated that satisfies the two interference prevention conditions while not compromising workability or cost-effectiveness. (F) The above embodiments disclose a system for calculating the amount of reinforcement in reinforced concrete of any of (C) to (E) having a function (S5) of setting the inside of the rib reinforcement bars 122, 222 arranged around the axial reinforcement bars 121, 221 in a direction perpendicular to the axial reinforcement bars as the reinforcement range of the axial reinforcement bars when calculating the minimum number that satisfies the longest limit spacing x, as shown in, for example, Figures 3, 5, and equation (3) or (7). According to (F), the range of axial reinforcement is limited to an appropriate range when calculating the minimum number of reinforcement bars that satisfies the maximum limit interval. This makes it possible to avoid a calculated reinforcement range that is larger than the actual range and an unnecessary increase in the number of reinforcement bars. As a result, it is possible to calculate the number n that does not impair workability or economy. (G) The above embodiments disclose a system for calculating the amount of reinforcement bars in reinforced concrete, any one of (A) to (F), having a function of setting the first direction as the horizontal direction, as shown in, for example, Figures 2 and 3, in which the computer 2 (2 and 3) sets the concrete section 120 for which the number n of axial reinforcement bars 121, 221 to be arranged in the first direction to be the added concrete section constructed at the upper or lower end of the structural concrete (110). According to (G), when pouring additional concrete at the upper or lower end of a structural concrete member such as a beam, the appropriate number of axial reinforcement bars to be arranged in the horizontal direction can be quickly determined, thereby improving the cost-effectiveness and ease of construction of the additional concrete pouring work. (H) In the above embodiment, as shown in, for example, FIG. 2 and FIG. 3, the computer 2 (2 and 3) calculates the number of axial reinforcement bars 121 to be arranged in the first direction in the concrete part 120 to be added to the upper end or lower end of the structural concrete (110), the first direction is the horizontal direction, and the minimum number n of axial reinforcement bars 121 that satisfies the maximum limit interval x is calculated. 2 The present invention discloses a system for calculating the amount of reinforcement in reinforced concrete, any one of which (C) to (F), has a function of setting the condition that the axial reinforcement is arranged at both horizontal ends of the added concrete section and taking the center of the axial reinforcement at both ends as the starting point (formula (3), S5). According to (H), it is possible to calculate an appropriate number of reinforcements that satisfies the maximum limit spacing x while allowing axial reinforcement to be placed at the outer ends on both sides. (I) The above embodiment has been described, for example, as shown in FIG. 4 and FIG. 5. The computer 2 (2 and 3) discloses a reinforcement amount calculation system for reinforced concrete, any one of (A) to (F), having a function of setting the concrete section 220 for which the number n of axial reinforcement bars 221 to be arranged in the first direction to be calculated as an added concrete section constructed on the side of the structural concrete (210), and setting the first direction to a horizontal direction. According to (I), when pouring additional concrete on the side of a structural concrete member such as a beam, it is possible to quickly determine the appropriate number of axial reinforcement bars to be arranged horizontally, thereby improving the cost-effectiveness and ease of construction of the additional concrete pouring work. (J) The above embodiments are described in detail below. As shown in Figures 4 and 5, the computer 2 (2 and 3) calculates the number n of axial reinforcement bars 221 to be arranged in the first direction in a concrete section 220 that is to be poured on the side of the structural concrete 210, the first direction is horizontal, and when calculating the minimum number that satisfies the longest limit interval x, the condition is that the axial reinforcement bar is arranged at the side end of the poured concrete section, and the center of the axial reinforcement bar at the side end and the side surface 211 of the structural concrete that is in contact with the poured concrete section are used as starting points (equation (7), S5). This discloses a system for calculating the amount of reinforcement bar in reinforced concrete of any of (C) to (F). According to (J), it is possible to calculate an appropriate number of reinforcements that can satisfy the maximum limit spacing x while making it possible to place axial reinforcement at the outer end on one side. (K) The above description of the embodiments discloses a reinforcement mass calculation program for causing a computer to function as a reinforcement mass calculation system for calculating the reinforcement mass of axial reinforcement bars arranged in reinforced concrete, as shown in, for example, Figures 1 to 7, Table I, Table II, formulas (1) to (4), or formulas (5) to (8), etc., and which causes a computer 2 (2 and 3) to realize the function of calculating (S7, S8) the number n of axial reinforcement bars to be arranged in the first direction, based on the dimension in a first direction (B in Figures 2 and 3, a in Figures 4 and 5) in which the axial reinforcement bars 121, 221 are arranged in a cross section perpendicular to the axial reinforcement bars of the concrete sections 120, 220 in which the axial reinforcement bars are arranged, the dimension in a second direction perpendicular to the first direction in the same cross section (a in Figures 2 and 3, H in Figures 4 and 5), the diameter D of the axial reinforcement bars, and the reinforcement density conditions p and x required for the same cross section. According to (K), the number of axial reinforcement bars to be arranged in the first direction is calculated based on the dimension of the axial reinforcement bars in the first direction, the dimension of the axial reinforcement bars in the same cross section in a second direction perpendicular to the first direction, and the diameter of the axial reinforcement bars, so that a number that is suitable for the spatial conditions of the reinforced concrete construction section can be calculated. According to (K), the number of axial reinforcement bars to be arranged in the first direction is calculated according to the reinforcing bar density conditions, so that a number that meets certain obstruction prevention conditions can be calculated. Therefore, the number of axial reinforcement bars to be arranged according to their diameter can be quickly calculated by a computer while satisfying the spatial conditions, interference prevention conditions, and strength conditions of the reinforced concrete construction area. (L) The above embodiment is described in detail with reference to FIG. 6, formula (2) or formula (6). In the computer 2 (2 and 3), one of the reinforcing bar density conditions is a reinforcing bar ratio represented by the total cross-sectional area of ​​the axial reinforcement to the cross-sectional area, and the minimum limit reinforcing bar ratio p is set as the minimum number n that satisfies the minimum limit reinforcing bar ratio. 1 The present invention discloses a program for calculating the amount of reinforcing bars in reinforced concrete (K) that realizes the function of calculating (S4). According to (L), the computer 2 (2 and 3) calculates the number n of axial reinforcement bars to be arranged in the first direction, with one of the reinforcing bar density conditions being the minimum marginal reinforcement ratio, i.e., with the condition that the minimum marginal reinforcement ratio is secured by the axial reinforcement bars. At that time, the calculation is based on the minimum number that satisfies the minimum marginal reinforcement ratio, so it is possible to calculate the number n that satisfies certain obstacle prevention conditions without impairing workability and economy. (M) The above embodiment is described in detail by setting, in the computer 2 (2 and 3), one of the reinforcing bar density conditions as the maximum limit interval x, which is the interval at which the axial reinforcement bars can be arranged, and setting the minimum number n that satisfies the maximum limit interval, as shown in FIG. 6, formula (3) or formula (7). 2 The present invention discloses a program for calculating the amount of reinforcing bars in reinforced concrete (K) that realizes the function of calculating (S5). According to (M), the computer 2 (2 and 3) calculates the number n of axial reinforcement bars to be arranged in the first direction, with one of the reinforcing bar density conditions being the maximum interval, i.e., with the maximum interval being the longest possible, and the calculation is based on the minimum number that satisfies the maximum interval limit, so that it is possible to calculate the number n that satisfies certain interference prevention conditions while not impairing workability or economic efficiency. (N) The above embodiment is described by, for example, setting, in the computer 2 (2 and 3), as shown in FIG. 6, formula (2), (3) or formula (6) (7), one of the reinforcing bar density conditions is a reinforcing bar ratio indicated by the total cross-sectional area of ​​the axial reinforcement to the area of ​​the cross section, which is a minimum limit reinforcing bar ratio p, and another of the reinforcing bar density conditions is a spacing at which the axial reinforcement is arranged, which is a maximum limit spacing x, and setting, in the computer 2 (2 and 3), the minimum number n that satisfies the minimum limit reinforcing bar ratio, which is a maximum limit spacing x, as shown in FIG. 1 and the minimum number n that satisfies the longest limit interval. 2 The present invention discloses a program for calculating the amount of reinforcing bars in reinforced concrete (K) that realizes the functions (S4, S5) of calculating the amount of reinforcing bars in reinforced concrete. According to (N), the computer 2 (2 and 3) calculates the number n of axial reinforcement bars to be arranged in the first direction, with the minimum limit rebar ratio and the maximum limit interval as the reinforcing bar density conditions. At that time, the calculation is based on the minimum number of bars that satisfy the minimum limit rebar ratio and the minimum number that satisfy the maximum limit interval, so it is possible to calculate the number n that satisfies higher-level obstacle prevention conditions without impairing workability and economy. (O) The above embodiment is described by inputting the minimum number n of reinforcement bars that satisfies the minimum limit rebar ratio p to the computer 2 (2 and 3) as shown in, for example, FIG. 6, formula (4) or formula (8). 1 and the minimum number n that satisfies the longest limit interval x. 2 The present invention discloses a program for calculating the amount of reinforcement in reinforced concrete (N) that realizes a function of calculating (S6-S8) the greater of the above as the number n of axial reinforcement bars to be arranged in the first direction. According to (O), computer 2 (2 and 3) calculates the greater of the minimum number that satisfies the minimum limit reinforcement ratio or the minimum number that satisfies the maximum spacing as the number of axial reinforcement bars to be arranged in the first direction. Therefore, the calculation load can be reduced by limiting the reinforcement density conditions to only the minimum limit reinforcement ratio and the maximum spacing, and a number n can be calculated that satisfies the two interference prevention conditions while not compromising workability or cost-effectiveness. (P) The above description of the embodiments discloses a reinforcement amount calculation program for reinforced concrete, any one of (M) to (O), which causes the computer 2 (2 and 3) to realize a function (S5) of setting the reinforcement range of the axial reinforcement to be the inside of the rib reinforcement 122, 222 arranged around the axial reinforcement 121, 221 in a direction perpendicular to the axial reinforcement when calculating the minimum number that satisfies the longest limit spacing x, as shown in, for example, Figure 3, Figure 5, formula (3) or formula (7). According to (P), the range of axial reinforcement is limited to an appropriate range when calculating the minimum number of bars that satisfies the maximum limit interval. This makes it possible to avoid a calculated range of reinforcement that is larger than the actual range and an unnecessary increase in the number of bars. As a result, it is possible to calculate the number n that does not impair workability or economy. (Q) The above embodiment describes a program for calculating the amount of reinforcement bars in reinforced concrete, any one of (K) to (P), which causes the computer 2 (2 and 3) to realize the function of setting the concrete section 120 for which the number n of axial reinforcement bars 121, 221 to be arranged in the first direction to be calculated as an added concrete section constructed at the upper or lower end of the structural concrete (110), as shown in, for example, Figures 2 and 3, and setting the first direction to the horizontal direction. According to (Q), when pouring additional concrete at the upper or lower end of a structural concrete member such as a beam, it is possible to quickly determine the appropriate number of axial reinforcement bars to be arranged horizontally, thereby improving the cost-effectiveness and ease of construction of the additional concrete pouring work. (R) In the above embodiment, as shown in FIG. 2 and FIG. 3, the concrete part 120 to be calculated is a concrete part to be placed at the upper or lower end of the structural concrete (110), the first direction is the horizontal direction, and the minimum number n of axial reinforcement bars 121 that satisfies the maximum limit interval x is calculated. 2 The present invention discloses a program for calculating the amount of reinforcement in reinforced concrete, any one of (M) to (P), which realizes the function of setting the condition that the axial reinforcement is arranged at both horizontal ends of the added concrete section and taking the center of the axial reinforcement at both ends as the starting point (formula (3), S5). According to (R), it is possible to calculate the appropriate number of reinforcements that satisfies the maximum limit spacing x while allowing axial reinforcement to be placed at the outer ends on both sides. (S) The above embodiment describes a program for calculating the amount of reinforcement bars in reinforced concrete, any one of (K) to (P), which causes the computer 2 (2 and 3) to realize the function of setting the concrete section 220 for which the number n of axial reinforcement bars 221 to be arranged in the first direction to be calculated as an added concrete section to be constructed to the side of the structural concrete (210), as shown in, for example, Figures 4 and 5, and setting the first direction to the horizontal direction. According to (S), when pouring additional concrete on the side of a structural concrete member such as a beam, it is possible to quickly determine the appropriate number of axial reinforcement bars to be arranged horizontally, thereby improving the cost-effectiveness and ease of construction of the additional concrete pouring work. (T) The above embodiment is explained by, for example, as shown in Figures 4 and 5, disclosing the reinforcement amount calculation programs for reinforced concrete (M) to (P) that cause the computer 2 (2 and 3) to realize the function of setting the concrete section 220 for which the number n of axial reinforcement bars 221 to be arranged in the first direction to be calculated as an added concrete section constructed on the side of the structural concrete 210, setting the first direction as the horizontal direction, and calculating the minimum number that satisfies the longest limit interval x, setting the condition that the axial reinforcement bar is arranged at the side end of the added concrete section, and setting the center of the axial reinforcement bar at the side end and the side surface 211 of the structural concrete that is in contact with the added concrete section as the starting point (equation (7), S5). According to (T), it is possible to calculate the appropriate number of reinforcements that can satisfy the maximum limit interval x while making it possible to place axial reinforcement at the outer end on one side. [Explanation of symbols]

[0083] 1. Reinforcement amount calculation system for reinforced concrete 2. Personal Computer 3 Network Server 4. Communication Network 21 CPU 110 Beam 120 Additional concrete section 121 Axial Reinforcement 122 Rib Reinforcement Bar 210 Beam 220 Additional concrete section 221 Axial Reinforcement 222 Rib Reinforcement Bar

Claims

1. A reinforcing bar amount calculation system comprising a computer, The computer, A first process of receiving an input of a width of a reinforced concrete beam from a user via an input device; A second process of receiving an input of a thickness of an additional concrete portion to be added above or below the beam from the user via the input device; a third process for receiving settings from the user via the input device, the diameter of the axial reinforcement of the added concrete section, the cover thickness on the side surface of the added concrete section, the diameter of the rib reinforcement of the added concrete section, a minimum limit reinforcement ratio indicating the minimum limit of the ratio of the total cross-sectional area of ​​the axial reinforcement to the cross-sectional area of ​​the added concrete section, and a maximum limit interval indicating the maximum limit of the interval of the axial reinforcement arranged in the width direction of the beam; a fourth process of multiplying the width received in the first process, the thickness received in the second process, the minimum limit reinforcement ratio received in the third process, and the reciprocal of the cross-sectional area of ​​the axial reinforcement determined from the diameter of the axial reinforcement received in the third process, and rounding up the product to an integer to calculate the number of reinforcements; a fifth process of calculating the number of reinforcement bars by multiplying a value obtained by subtracting twice the cover thickness received in the third process, twice the diameter of the rib reinforcement bars received in the third process, and the diameter of the axial reinforcement bars received in the third process from the width received in the first process by the reciprocal of the maximum limit interval received in the third process, and rounding up the product to an integer and further adding 1 to the product; a sixth process of comparing the number calculated in the fourth process with the number calculated in the fifth process; a seventh process in which, if the comparison result of the sixth process shows that the number calculated in the fourth process is greater than the number calculated in the fifth process, the number calculated in the fourth process is displayed on the display device as the number of axial reinforcement bars to be arranged in the width direction of the beam, and if not, the number calculated in the fifth process is displayed on the display device as the number of axial reinforcement bars to be arranged in the width direction of the beam; Run Reinforcement bar amount calculation system.

2. A reinforcing bar amount calculation system comprising a computer, A first process of receiving an input of a beam depth of a reinforced concrete structure from a user via an input device; A second process of receiving an input of a thickness of an additional concrete portion to be poured on the side of the beam from the user via the input device; a third process for receiving settings from the user via the input device, the diameter of the axial reinforcement of the added concrete section, the cover thickness on the side surface of the added concrete section, the diameter of the rib reinforcement of the added concrete section, a minimum limit reinforcement ratio indicating the minimum limit of the ratio of the total cross-sectional area of ​​the axial reinforcement to the cross-sectional area of ​​the added concrete section, and a maximum limit interval indicating the maximum limit of the interval between the axial reinforcement arranged in the thickness direction of the added concrete section; a fourth process of multiplying the beam depth received in the first process, the thickness received in the second process, the minimum limit reinforcement ratio received in the third process, and the reciprocal of the cross-sectional area of ​​the axial reinforcement determined from the diameter of the axial reinforcement received in the third process, and rounding up the product to an integer to calculate the number of reinforcements; a fifth process for calculating the number of reinforcement bars by multiplying a value obtained by subtracting the cover thickness received in the third process, the diameter of the rib reinforcement bars received in the third process, and half the diameter of the axial reinforcement bars received in the third process from the thickness received in the second process by the reciprocal of the maximum limit interval received in the third process, and rounding up the product to an integer; a sixth process of comparing the number calculated in the fourth process with the number calculated in the fifth process; a seventh process in which, if the number calculated in the fourth process is greater than the number calculated in the fifth process as a result of the comparison in the sixth process, the number calculated in the fourth process is displayed on a display device as the number of axial reinforcement bars to be arranged in the thickness direction of the added concrete portion, and if not, the number calculated in the fifth process is displayed on the display device as the number of axial reinforcement bars to be arranged in the thickness direction of the added concrete portion; Run Reinforcement bar amount calculation system.

3. A computer comprising: A first process of receiving an input of a width of a reinforced concrete beam from a user via an input device; A second process of receiving an input of a thickness of an additional concrete portion to be added above or below the beam from the user via the input device; a third process for receiving settings from the user via the input device, the diameter of the axial reinforcement of the added concrete section, the cover thickness on the side surface of the added concrete section, the diameter of the rib reinforcement of the added concrete section, a minimum limit reinforcement ratio indicating the minimum limit of the ratio of the total cross-sectional area of ​​the axial reinforcement to the cross-sectional area of ​​the added concrete section, and a maximum limit interval indicating the maximum limit of the interval of the axial reinforcement arranged in the width direction of the beam; a fourth process of multiplying the width received in the first process, the thickness received in the second process, the minimum limit reinforcement ratio received in the third process, and the reciprocal of the cross-sectional area of ​​the axial reinforcement determined from the diameter of the axial reinforcement received in the third process, and rounding up the product to an integer to calculate the number of reinforcements; a fifth process of calculating the number of reinforcement bars by multiplying a value obtained by subtracting twice the cover thickness received in the third process, twice the diameter of the rib reinforcement bars received in the third process, and the diameter of the axial reinforcement bars received in the third process from the width received in the first process by the reciprocal of the maximum limit interval received in the third process, and rounding up the product to an integer and further adding 1 to the product; a sixth process of comparing the number calculated in the fourth process with the number calculated in the fifth process; a seventh process in which, if the comparison result of the sixth process shows that the number calculated in the fourth process is greater than the number calculated in the fifth process, the number calculated in the fourth process is displayed on the display device as the number of axial reinforcement bars to be arranged in the width direction of the beam, and if not, the number calculated in the fifth process is displayed on the display device as the number of axial reinforcement bars to be arranged in the width direction of the beam; Run program.

4. A computer comprising: A first process of receiving an input of a beam depth of a reinforced concrete structure from a user via an input device; A second process of receiving an input of a thickness of an additional concrete portion to be poured on the side of the beam from the user via the input device; a third process for receiving settings from the user via the input device, the diameter of the axial reinforcement of the added concrete section, the cover thickness on the side surface of the added concrete section, the diameter of the rib reinforcement of the added concrete section, a minimum limit reinforcement ratio indicating the minimum limit of the ratio of the total cross-sectional area of ​​the axial reinforcement to the cross-sectional area of ​​the added concrete section, and a maximum limit interval indicating the maximum limit of the interval between the axial reinforcement arranged in the thickness direction of the added concrete section; a fourth process of multiplying the beam depth received in the first process, the thickness received in the second process, the minimum limit reinforcement ratio received in the third process, and the reciprocal of the cross-sectional area of ​​the axial reinforcement determined from the diameter of the axial reinforcement received in the third process, and rounding up the product to an integer to calculate the number of reinforcements; a fifth process for calculating the number of reinforcement bars by multiplying a value obtained by subtracting the cover thickness received in the third process, the diameter of the rib reinforcement bars received in the third process, and half the diameter of the axial reinforcement bars received in the third process from the thickness received in the second process by the reciprocal of the maximum limit interval received in the third process, and rounding up the product to an integer; a sixth process of comparing the number calculated in the fourth process with the number calculated in the fifth process; a seventh process in which, if the number calculated in the fourth process is greater than the number calculated in the fifth process as a result of the comparison in the sixth process, the number calculated in the fourth process is displayed on a display device as the number of axial reinforcement bars to be arranged in the thickness direction of the added concrete portion, and if not, the number calculated in the fifth process is displayed on the display device as the number of axial reinforcement bars to be arranged in the thickness direction of the added concrete portion; Run program.

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