JP7246826B2 - Strength/Displacement Judgment Method and Strength/Displacement Judgment Program - Google Patents

Description

The present invention relates to a strength/displacement determination method and a strength/displacement determination program for determining whether a predetermined strength/displacement is satisfied when a device of any weight is accommodated at an arbitrary height of a storage rack.

When various types of equipment are stored in storage racks such as racks and cabinets, it is necessary to check whether or not the stored state satisfies a predetermined strength and displacement such as seismic strength. When performing such confirmation, conventionally, detailed calculations and analyzes have been made to determine whether or not the stress, displacement, etc. are less than a predetermined allowable value for each different weight and housing height of the device. For example, even if the weight of the equipment is the same, if the storage height is different, detailed calculations are performed.

There is also known a building seismic resistance evaluation system that performs response analysis of a building by using an analysis model that matches the actual situation of the building in response to changes in conditions such as weight (see, for example, Patent Document 1).

JP 2014-16249 A

However, conventionally, detailed calculations had to be performed for each different weight and housing height of the equipment, which required time and labor. Moreover, when considering various housing patterns (patterns of which devices are to be housed at what height), detailed calculations must be performed for each of the many housing patterns, requiring a great deal of time and effort. Was. In addition, if many calculations are performed, there is a risk of input errors or calculation errors. On the other hand, even if the building earthquake resistance evaluation system described in Patent Document 1 is used, the same evaluation must be performed for each accommodation pattern.

Therefore, the present invention provides a strength/displacement determination method that makes it possible to easily and properly determine whether a predetermined strength/displacement is satisfied even when the weight and height of the equipment stored in the storage rack are different. and to provide a strength/displacement determination program.

In order to solve the above-mentioned problems , the invention according to claim 1 determines whether or not predetermined strength and displacement are satisfied when the equipment is accommodated in a storage rack capable of accommodating the equipment at a plurality of height positions. A program for determining strength and displacement, in which a computer controls the total weight of all the devices housed in the storage rack and the height of the center of gravity when all the devices are regarded as a unit. , as a coordinate axis, a graph storage means for storing a judgment graph showing a boundary line indicating whether or not the predetermined strength and displacement are satisfied, the total weight of all the equipment to be accommodated in the storage rack, and the Calculation means for calculating the height of the total center of gravity, plotting the calculated value on the determination graph, and determining whether or not the predetermined strength/displacement is satisfied depending on whether or not the value is smaller than the boundary line It is characterized by functioning as determination means for

The invention according to claim 2 is the strength/displacement determination program according to claim 1 , wherein the boundary line for a plurality of types of storage racks is shown in the determination graph, and the determination means determines the calculated value as the It is characterized by plotting it on a judgment graph and selecting a storage rack that is larger than the calculated value and closest to the boundary line as the most suitable storage rack.

According to the first aspect of the invention, the total weight and the total center-of-gravity height of all the equipment to be accommodated in the rack are calculated, and the calculated values are plotted on a judgment graph prepared in advance. It may be determined whether or not the predetermined intensity/displacement is satisfied depending on whether or not it is smaller than the boundary line. That is, it is sufficient to calculate only the total weight and the total center-of-gravity height, which are relatively easily calculable, and plot the values on the determination graph, and there is no need to perform detailed calculations of displacement, stress, and the like. Therefore, even if the weight and height of the equipment to be housed in the housing rack are different, it is possible to easily and properly determine whether or not the predetermined strength and displacement are satisfied. In addition , since such determination is automatically performed, it is possible to make the determination more easily and appropriately.

According to the invention of claim 2, the calculated total weight and total center-of-gravity height are plotted on a judgment graph showing boundary lines for a plurality of types of storage racks, and a boundary line larger than the calculated value is plotted. In addition, it is possible to easily select an appropriate storage rack (having sufficient strength) only by selecting the storage rack closest to the boundary line. Moreover , since such selection is automatically performed, it becomes possible to select more easily and appropriately.

FIG. 4 is a diagram showing a determination graph in the strength/displacement determination program and strength/displacement determination method according to the embodiment of the present invention; 1 is a schematic configuration block diagram of a computer installed with a strength/displacement determination program according to an embodiment of the present invention; FIG. It is a figure which shows the calculation method by the calculation part of the computer of FIG. It is a figure which shows the calculation result by the calculation part of the computer of FIG. It is a figure which shows the determination method by the determination part of the computer of FIG. 4 is a flow chart showing a strength/displacement determination method by a strength/displacement determination program according to an embodiment of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the illustrated embodiments.

1 to 6 show an embodiment of the invention, and FIG. 2 is a schematic configuration block diagram of a computer 1 installed with a strength/displacement determination program according to this embodiment. This strength/displacement determination program is a program for determining whether or not a predetermined strength/displacement is satisfied when a device (object to be accommodated) 3 is accommodated in the storage rack 2. It functions as a storage means) 13 , a calculation part (calculation means) 14 , and a determination part (determination means) 15 .

Here, the storage rack 2 is a self-supporting rack or cabinet made of metal, and is capable of storing a plurality of devices 3 at a plurality of arbitrary height positions. In addition, the predetermined strength (displacement) in this embodiment is the strength required for earthquake resistance, and the maximum stress (displacement) when a predetermined acceleration is applied vertically and horizontally is less than the allowable stress (displacement) amount. shall require something.

The input unit 11 shown in FIG. 2 is an interface for inputting various kinds of information and commands, and inputs the type/model of the storage rack 2, the type/weight of the equipment 3, the storage height, and the like. The display unit 12 is a display that displays various types of information and images, and displays a determination graph G, which will be described later, a determination result by the determination unit 15, and the like.

The graph database 13 is a database that stores the judgment graph G. FIG. The determination graph G is, as shown in FIG. 2 is a graph showing boundary lines L1 to L4 indicating whether or not a predetermined intensity/displacement is satisfied, with , and , as coordinate axes. That is, on the coordinates (coordinates of weight vs. center of gravity height) where the horizontal axis is the total weight (total equipment weight) of all the devices 3 and the vertical axis is the total height of the center of gravity when all the devices 3 are regarded as one unit, 4 is a graph showing boundary lines L1 to L4 indicating boundaries between values of total weight and total height of the center of gravity that satisfy predetermined strength and displacement and values that do not satisfy the predetermined strength and displacement.

In this embodiment, the same determination graph G shows boundary lines L1 to L4 for storage racks 2 of a plurality of types, types, and sizes. Here, for example, the first boundary line L1 is the boundary line of the storage rack 2 that is the largest and has the highest strength, and the fourth boundary line L4 is the boundary line of the storage rack 2 that is the smallest. In this embodiment, the boundary lines L1 to L4 are straight lines by displaying the total weight and the total center-of-gravity height logarithmically, that is, by using a double logarithmic graph. Such boundary lines L1 to L4 are created in advance by analysis using CAE (Computer Aided Engineering) or the like.

The calculation unit 14 is a task program activated by the central processing unit 16 to calculate the total weight of all the equipment 3 accommodated in the rack 2 and the total height of the center of gravity of all the equipment 3 . That is, the total weight and the total center-of-gravity height are calculated based on the type, weight, and housing height of the device 3 input by the input unit 11 . For example, as shown in FIG. 3, the first device ₃₁ has a weight of m1 and a housing height of h1, the second device 32 has a weight of m2 and a housing height of h2, and the third device ₃₃ has a weight of m2 and a housing height of _h2 . Assume that the weight is m3 and the storage height is h3. In this case, the total weight M and total center-of-gravity height h0 are calculated according to the following equations.
Gross weight M = m1 + m2 + m3
Total center of gravity height h0 = (m1 x h1 + m2 x h2 + m3 x h3) ÷ (m1 + m2 + m3)
As a result, as shown in FIG. 4, the device ₃₀ having a weight of M is assumed to be housed in the housing rack 2 at the housing height h0.

The determination unit 15 is activated by the central processing unit 16 and plots the values of the total weight and the total center-of-gravity height calculated by the calculation unit 14 on the determination graph G of the graph database 13. It is a task program that determines whether or not a predetermined strength/displacement is satisfied depending on whether or not it is small. That is, the values calculated by the calculator 14 are plotted on a judgment graph G as shown in FIG. judge. For example, when the values of the total weight and the total center-of-gravity height are in the OK range, as indicated by the white circles in the figure, it is determined that the predetermined strength and displacement are satisfied. and the value of the total center-of-gravity height are in the NG region, it is determined that the predetermined strength and displacement are not satisfied.

In addition, the determination unit 15 plots the values of the total weight and the total center-of-gravity height calculated by the calculation unit 14 on the determination graph G, and selects the accommodation rack 2 having the boundary line L that is larger than and closest to the calculated value as the closest. A suitable storage rack 2 is selected. That is, as shown in FIG. 1, when boundary lines L1 to L4 for storage racks 2 of a plurality of types, types, and sizes are shown in the determination graph G, the value calculated by the calculation unit 14 is larger and the most The accommodation racks 2 on the near boundary lines L1 to L4 are selected as the most suitable accommodation racks 2 that are neither excessive nor deficient in strength.

For example, when the value calculated by the calculation unit 14 is P1, the storage rack 2 of the second boundary line L2 closest to P1 among the boundary lines L1 and L2 larger than P1 is selected as the most suitable storage rack 2. . Similarly, when the value calculated by the calculation unit 14 is P2, the storage rack 2 on the first boundary line L1 is selected as the most suitable storage rack 2, and when the value calculated by the calculation unit 14 is P3, the third The storage rack 2 on the boundary line L3 of is selected as the most suitable storage rack 2 .

Next, the operation of such a strength/displacement determination program and the strength/displacement determination method by the strength/displacement determination program will be described with reference to the flow chart of FIG.

First, when parameters such as the type/model of the storage rack 2 and the type/weight and storage height of the equipment 3 to be stored are input by the input unit 11 (step S1), the calculation unit 14 calculates the total weight of all the equipment 3. and the total center-of-gravity height are calculated (step S2). Here, as a method of inputting the parameters, numerical values such as the weight and the storage height may be input, or a drawing showing the storage state of the equipment 3 in the storage rack 2 may be input. Further, the following description assumes that the storage rack 2 on the second boundary line L2 is designated and input.

Next, the values of the calculated total weight and total center-of-gravity height are plotted on the determination graph G by the determining unit 15 (step S3), and the values are plotted on the second boundary line L2 of the designated storage rack 2. It is determined whether or not it is small, that is, whether or not a predetermined strength/displacement is satisfied (step S4). If the predetermined strength/displacement is satisfied (“Y” in step S4), it is determined whether or not the storage rack 2 smaller than the storage rack 2 on the second boundary line L2 also satisfies the predetermined strength/displacement. (step S5). That is, it is determined whether or not the boundary lines L1 to L4 that are larger and closest to the calculated value are the second boundary line L2.

For example, when the value calculated by the calculator 14 is P1, the boundary lines L1 to L4 that are larger and closest to P1 are the second boundary line L2. Therefore, since the storage rack 2 smaller than the storage rack 2 of the second boundary line L2 does not satisfy the predetermined strength and displacement (because of "N" in step S5), the specified second boundary line L2 The judgment result that the storage rack 2 is the most suitable is displayed on the display unit 12 (step S6). Further, when the value calculated by the calculation unit 14 is P3, the boundary lines L1 to L4 that are larger and closest to P3 are the third boundary line L3. For this reason, in order to satisfy the predetermined strength and displacement even with the accommodation rack 2 smaller than the accommodation rack 2 of the second boundary line L2 (because of "Y" in step S5), the accommodation of the designated second boundary line L2 The display unit 12 displays the determination result that the rack 2 satisfies the predetermined strength and displacement, but the storage rack 2 on the third boundary line L3 is the most suitable (step S7).

On the other hand, if the designated storage rack 2 does not satisfy the predetermined strength/displacement ("N" in step S4), the storage racks 2 of boundary lines L1 to L4 that satisfy the predetermined strength/displacement are selected (step S8). That is, the storage racks 2 on the boundary lines L1 to L4 that are larger than and closest to the value calculated by the calculator 14 are selected. For example, if the value calculated by the calculator 14 is P2, the storage rack 2 on the first boundary line L1 that is larger than and closest to P2 is selected. Then, the display unit displays the determination result that the storage rack 2 on the specified second boundary line L2 does not satisfy the predetermined strength and displacement, and the storage rack 2 on the first boundary line L1 satisfies the predetermined strength and displacement. 12 (step S9).

As described above, according to this strength/displacement determination program and strength/displacement determination method, the total weight and the total center-of-gravity height of all the devices 3 accommodated in the rack 2 are calculated, and the calculated values are prepared in advance. It may be determined whether or not the predetermined intensity/displacement is satisfied depending on whether or not this value is smaller than the boundary line L. That is, it suffices to calculate only the total weight and the total center-of-gravity height, which are relatively easily calculable, and plot the values on the determination graph G, without the need for detailed calculations of displacement, stress, and the like. Therefore, even if the equipment 3 accommodated in the accommodation rack 2 has different weights and accommodation heights, it is possible to easily and properly determine whether or not the predetermined strength and displacement are satisfied. Moreover, by using the strength/displacement determination program, such determination is automatically performed by simply inputting the parameters, making it possible to perform the determination more easily and appropriately.

In addition, the calculated total weight and total center of gravity height are plotted on a judgment graph G showing boundary lines L1 to L4 for a plurality of types of storage racks 2, and boundary lines L1 to L4 larger than the calculated value and Only by selecting the storage racks 2 of the nearest boundary lines L1 to L4, it is possible to easily select the storage racks 2 that are appropriate (the strength is neither too much nor too little). Moreover, by using the strength/displacement judging program, such selection is automatically performed only by inputting the parameters, making it possible to make the selection more easily and appropriately.

Here, although the strength/displacement determination method using the strength/displacement determination program has been described in the above embodiment, the strength/displacement determination method may be a manual strength/displacement determination method. That is, the judgment graph G is created in advance, and the total weight and the total center-of-gravity height of all the devices 3 accommodated in the rack 2 are calculated. Then, the calculated value is plotted on the determination graph G, and whether or not the value is smaller than the boundary line L determines whether or not the predetermined strength/displacement is satisfied. At this time, when a plurality of boundary lines L1 to L4 are shown in the determination graph G, the storage rack 2 having the boundary lines L1 to L4 that are larger and closest to the calculated value is selected as the most suitable storage rack 2. do.

Although the embodiments of the present invention have been described above, the specific configuration is not limited to the above-described embodiments. Included in the invention. For example, in the above embodiment, a plurality of boundary lines L1 to L4 are shown in one judgment graph G, but they may be shown in a plurality of judgment graphs G. FIG. In addition, although the case of prescribed seismic resistance with prescribed strength and displacement has been explained, it may be applied to multiple prescribed strengths and displacements with different regulations. should be provided.

1 computer 2 storage rack 3 equipment 13 graph database (graph storage means)
14 calculation unit (calculation means)
15 Determination unit (determination means)
G Judgment graph L, L1 to L4 Boundary line P1 to P3 Calculated value

Claims (2)

A strength/displacement determination program for determining whether a predetermined strength/displacement is satisfied when the device is stored in a storage rack capable of storing the device at a plurality of height positions, the computer comprising:
Whether the predetermined strength and displacement are satisfied with the total weight of all the devices housed in the storage rack and the height of the center of gravity when all the devices are regarded as one as a coordinate axis. Graph storage means for storing a judgment graph showing the boundary line of whether or not
a calculation means for calculating the total weight of all the devices housed in the storage rack and the total center-of-gravity height of all the devices;
Determination means for plotting the calculated value on the determination graph and determining whether the predetermined intensity/displacement is satisfied based on whether the value is smaller than the boundary line;
A strength/displacement determination program characterized by functioning as The boundary lines for multiple types of storage racks are shown in the determination graph,
The determination means plots the calculated value on the determination graph, and selects the storage rack that is larger than the calculated value and closest to the boundary line as the most suitable storage rack.
The strength/displacement determination program according to claim 1 , characterized by:

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