Ground motion acceleration waveform data editing system, editing method, and program

Abstract

To provide an editing system, an editing method and a program of ground motion acceleration waveform data capable of reducing calculation cost of earthquake response analysis.SOLUTION: A system for editing ground motion acceleration waveform data according to the present disclosure includes a data acquisition unit that acquires ground motion acceleration waveform data of an earthquake used for seismic response analysis of a building, and a data editing unit that edits the ground motion acceleration waveform data acquired by the data acquisition unit, wherein the data editing unit includes a trimming processing unit that trims the ground motion acceleration waveform data used for the seismic response analysis, and a trimming correction unit that corrects data at a start end portion of a trimming range of the ground motion acceleration waveform data trimmed by the trimming processing unit.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a system, a method, and a program for editing ground acceleration waveform data. [Background technology]

[0002] When designing a building, it has been customary to verify the safety of the building in the event of an earthquake. This verification of safety can be achieved, for example, by reproducing and analyzing the seismic response using a building model. The building model used in the above-mentioned reproduction and analysis is often a relatively simplified model, for example, a single-bar shear mass model in which the building is modeled with a relatively small number of mass points (see, for example, Patent Document 1 listed below). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-078496 Summary of the Invention [Problem to be solved by the invention]

[0004] On the other hand, when designing a high-rise building with a relatively complex vertical plan shape, using a simplified model such as the single-bar shear mass model described above to analyze its seismic response may result in insufficient reproduction of the seismic response, making accurate analysis difficult. Therefore, to analyze the seismic response of such a high-rise building with a complex vertical plan shape, it is considered to use a full three-dimensional model that models multiple components such as beams and columns contained in the building.

[0005] However, when analyzing seismic response using a full three-dimensional model, the computational cost is much higher than when using a single-bar shear mass model. During the design and review stage of a building, it is necessary to perform a seismic response analysis every time the structure is changed, and the analytical work requiring the high computational cost described above can be a factor in reducing work efficiency.

[0006] In view of the above-mentioned problems, the present disclosure aims to provide a system, an editing method, and a program for editing ground acceleration waveform data that can reduce the calculation cost of earthquake response analysis. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, a ground acceleration waveform data editing system according to a first aspect of the present disclosure comprises: a data acquisition unit that acquires ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of a building; and a data editing unit that edits the ground acceleration waveform data acquired by the data acquisition unit, wherein the data editing unit comprises: a trimming processing unit that trims the ground acceleration waveform data to be used in earthquake response analysis; and a trimming correction unit that corrects data at the start of a trimming range of the ground acceleration waveform data trimmed by the trimming processing unit.

[0008] In such a system for editing ground acceleration waveform data, the number of pieces of ground acceleration data can be reduced by trimming. Furthermore, since the data at the start end of the trimming range of the ground acceleration waveform data is corrected after trimming, it is possible to avoid or significantly reduce the degradation of the evaluation accuracy of earthquake response analysis caused by trimming when the obtained ground acceleration waveform data is used in earthquake response analysis.

[0009] A ground acceleration waveform data editing system according to a second aspect of the present disclosure is the ground acceleration waveform data editing system according to the first aspect of the present disclosure, wherein the trimming processing unit identifies the trimming range based on a monotonically increasing function using the ground acceleration waveform data.

[0010] In such a system for compiling ground acceleration waveform data, the use of a monotonically increasing function makes it possible to easily identify areas that have little effect on the evaluation accuracy of earthquake response analysis.

[0011] A ground acceleration waveform data editing system according to a third aspect of the present disclosure is the ground acceleration waveform data editing system according to the second aspect of the present disclosure, wherein the trimming processing unit trims sections where the value of the monotonically increasing function is smaller than a first threshold value and sections where the value is larger than a second threshold value that is larger than the first threshold value.

[0012] In such a system for editing ground acceleration waveform data, it is possible to reliably trim areas of the ground acceleration waveform data that have little effect on the evaluation accuracy of earthquake response analysis.

[0013] A fourth aspect of the present disclosure relates to an editing system for ground acceleration waveform data, and in the editing system for ground acceleration waveform data according to the third aspect of the present disclosure, the first threshold value and the second threshold value are adjusted so that the error between the calculation result of a response spectrum calculated over a predetermined periodic range using the ground acceleration waveform data and the calculation result of a response spectrum calculated over the predetermined periodic range using the edited ground acceleration waveform data does not exceed a predetermined error range.

[0014] In this system for editing ground acceleration waveform data, the threshold values ​​used in the trimming processor can be determined essentially automatically, thereby avoiding variations in the results of earthquake response analysis due to the user's lack of knowledge.

[0015] A ground acceleration waveform data editing system according to a fifth aspect of the present disclosure is the ground acceleration waveform data editing system according to any one of the first to fourth aspects of the present disclosure, wherein the trimming correction unit corrects the data at the start of the trimmed ground acceleration waveform data based on data from a section before the trimming range.

[0016] In such a system for editing ground acceleration waveform data, the number of pieces of ground acceleration waveform data is reduced, and the data at the beginning of the ground acceleration waveform data is corrected based on values ​​related to the data in the section before the trimming range, thereby making it possible to more effectively avoid any impact on the evaluation accuracy of earthquake response analysis.

[0017] A ground acceleration waveform data editing system according to a sixth aspect of the present disclosure is the ground acceleration waveform data editing system according to any one of the first to fifth aspects of the present disclosure, wherein the data editing unit further includes a filter processing unit that adjusts multiple measurement values ​​included in the trimmed ground acceleration waveform data based on other consecutive measurement values, and a downsampling processing unit that thins out some of the measurement values.

[0018] In such a system for editing ground acceleration waveform data, downsampling editing is performed in addition to editing using trimming, so the number of pieces of ground acceleration waveform data can be significantly reduced.

[0019] A seventh aspect of the present disclosure relates to an editing system for ground acceleration waveform data, in which, in the editing system for ground acceleration waveform data according to the sixth aspect of the present disclosure, the filter processing unit adjusts the measurement value by filtering it using an FIR filter.

[0020] In such a system for editing ground acceleration waveform data, when downsampled ground acceleration waveform data is used in earthquake response analysis, it is possible to easily avoid or significantly reduce the decrease in evaluation accuracy of earthquake response analysis caused by downsampling.

[0021] An editing system for ground acceleration waveform data according to an eighth aspect of the present disclosure is the editing system for ground acceleration waveform data according to the sixth or seventh aspect of the present disclosure, further comprising an upsampling processing unit that increases the measurement values ​​included in the trimmed ground acceleration waveform data using an interpolation method, and the downsampling processing unit thins out some of the measurement values ​​increased by the upsampling processing unit.

[0022] In such a system for editing ground acceleration waveform data, the degree to which the number of data items is reduced by downsampling can be finely adjusted.

[0023] A system for editing ground acceleration waveform data according to a ninth aspect of the present disclosure comprises a data acquisition unit that acquires ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of a building, and a data editing unit that edits the ground acceleration waveform data acquired by the data acquisition unit, wherein the data editing unit comprises a filter processing unit that adjusts multiple measurement values ​​included in the ground acceleration waveform data to be used in earthquake response analysis based on other consecutive measurement values, and a downsampling processing unit that thins out some of the measurement values.

[0024] In such a system for editing ground acceleration waveform data, the number of pieces of ground acceleration data can be reduced by downsampling. Furthermore, because each piece of ground acceleration waveform data is adjusted in a filter processing unit before downsampling, when the obtained ground acceleration waveform data is used in earthquake response analysis, a decrease in the evaluation accuracy of the earthquake response analysis due to downsampling can be avoided or significantly reduced.

[0025] A ground acceleration waveform data editing system according to a tenth aspect of the present disclosure is the ground acceleration waveform data editing system according to the ninth aspect of the present disclosure, wherein the data editing unit further includes a trimming processing unit that trims the ground acceleration waveform data from which some of the measurement values ​​have been thinned out by the downsampling processing unit, and a trimming correction unit that corrects the data at the start of the trimming range of the ground acceleration waveform data trimmed by the trimming processing unit.

[0026] In such an editing system for ground acceleration waveform data, trimming editing is performed in addition to editing using downsampling, so the number of pieces of ground acceleration waveform data can be significantly reduced.

[0027] A method for editing ground acceleration waveform data according to an eleventh aspect of the present disclosure includes, by a computer, steps of acquiring ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of a building, trimming the ground acceleration waveform data to be used in earthquake response analysis, and correcting data at the start end of the trimming range of the trimmed ground acceleration waveform data.

[0028] In this method for editing ground acceleration waveform data, the number of pieces of ground acceleration data can be reduced by trimming. Furthermore, since the data at the start of the trimming range is corrected after trimming, it is possible to avoid or significantly reduce the degradation of the evaluation accuracy of earthquake response analysis caused by trimming when the obtained ground acceleration waveform data is used in earthquake response analysis.

[0029] A method for editing ground acceleration waveform data according to a twelfth aspect of the present disclosure includes, by a computer, steps of acquiring ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of a building, adjusting multiple measurement values ​​included in the ground acceleration waveform data to be used in earthquake response analysis based on other consecutive measurement values, and thinning out some of the adjusted measurement values.

[0030] In this method for compiling ground acceleration waveform data, the number of ground acceleration data can be reduced by downsampling, which thins out some of the measurement values ​​that make up the ground acceleration waveform data. Furthermore, because each data point in the ground acceleration waveform data is adjusted before downsampling, it is possible to avoid or significantly reduce a decrease in the evaluation accuracy of earthquake response analysis due to downsampling when the obtained ground acceleration waveform data is used in earthquake response analysis.

[0031] A program according to a thirteenth aspect of the present disclosure causes a computer processor to execute the steps of acquiring ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of a building, trimming the ground acceleration waveform data to be used in earthquake response analysis, and correcting data at the start of the trimming range of the trimmed ground acceleration waveform data.

[0032] In such a program, the number of ground acceleration data can be reduced by trimming. Furthermore, since the data at the start of the trimming range is corrected after trimming, it is possible to avoid or significantly reduce the degradation of the evaluation accuracy of earthquake response analysis due to trimming when the obtained ground acceleration waveform data is used in earthquake response analysis.

[0033] A program according to a fourteenth aspect of the present disclosure causes a computer processor to execute the steps of acquiring ground acceleration waveform data of seismic motion to be used in earthquake response analysis of a building, adjusting multiple measurement values ​​included in the ground acceleration waveform data to be used in earthquake response analysis based on other consecutive measurement values, and thinning out some of the measurement values.

[0034] In such a program, the number of ground acceleration data can be reduced by downsampling, which thins out some of the measured values ​​constituting the ground acceleration waveform data. Furthermore, because each data point in the ground acceleration waveform data is adjusted before downsampling, it is possible to avoid or significantly reduce the degradation of the evaluation accuracy of earthquake response analysis due to downsampling when the obtained ground acceleration waveform data is used in earthquake response analysis. [Effects of the Invention]

[0035] According to the system, method, and program for editing ground acceleration waveform data disclosed above, it is possible to reduce the calculation cost of earthquake response analysis. [Brief explanation of the drawings]

[0036] [Figure 1] 1 is a schematic configuration diagram of a system for editing ground acceleration waveform data according to a first embodiment of the present disclosure. [Figure 2] 1 is a functional block diagram of a system for editing ground acceleration waveform data according to a first embodiment of the present disclosure. [Figure 3] 3 is an explanatory diagram illustrating an example of processing content in a trimming processing unit shown in FIG. 2.

[0023] FIG. [Figure 4] 3 is an explanatory diagram illustrating an example of processing content in a trimming correction unit shown in FIG. 2.

[0023] FIG. [Figure 5] 4 is a flowchart showing an example of a method for editing ground acceleration waveform data according to the first embodiment of the present disclosure. [Figure 6] FIG. 10 is a functional block diagram of a system for editing ground acceleration waveform data according to a second embodiment of the present disclosure. [Figure 7] 7 is an explanatory diagram illustrating an example of processing content in a filter processing unit shown in FIG. 6. FIG. [Figure 8] 7 is an explanatory diagram illustrating an example of processing content in a downsampling processing unit shown in FIG. 6. FIG. [Figure 9]10 is a flowchart showing an example of a method for editing ground acceleration waveform data according to a second embodiment of the present disclosure. [Figure 10] FIG. 10 is a functional block diagram of a system for editing ground acceleration waveform data according to a third embodiment of the present disclosure. [Figure 11] 11 is an explanatory diagram illustrating an example of processing content in the downsampling editing unit shown in FIG. 10. FIG. [Figure 12] 10 is a flowchart showing an example of a method for editing ground acceleration waveform data according to a third embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0037] Hereinafter, each embodiment for carrying out the present disclosure will be described with reference to the drawings. Note that the scope necessary for the explanation to achieve the object of the present disclosure will be schematically shown below, and the scope necessary for explaining the relevant parts of the present disclosure will be mainly explained, and the parts for which explanation is omitted will be referred to as publicly known technologies. Furthermore, identical or similar reference numerals will be used for identical or corresponding components in the drawings, and duplicate explanations will be omitted. Furthermore, when a plurality of identical or corresponding components are included in the drawings, only some of them may be referenced to make the drawings easier to understand.

[0038] First Embodiment Fig. 1 is a schematic diagram illustrating a system for editing ground acceleration waveform data according to a first embodiment of the present disclosure. As shown in Fig. 1, the editing system 1 according to this embodiment may include at least a computer 10 as a computing device. The computer 10 constituting the editing system 1 may be a well-known computer, and specifically may include at least a processor 11, a ROM (Read Only Memory) 12 and a RAM (Random Access Memory) 13 as examples of memory, a storage 14, a communication interface 15, and an input / output interface 16. These components may be connected to each other via an internal bus so as to be able to communicate with each other.

[0039] The processor 11 may be configured, for example, as a CPU (Central Processing Unit) and may be capable of executing various programs and controlling each part. Specifically, the processor 11 may be capable of reading various programs stored in the ROM 12 or storage 14 and executing the programs using the RAM 13 as a work area. The processor 11 may be capable of controlling each component constituting the editing system 1 and performing various arithmetic processing according to the programs.

[0040] The ROM 12 may be capable of storing various programs and various data, and the RAM 13 may be capable of temporarily storing programs or data as a working area.

[0041] The storage 14 can be composed of a recording medium such as an HDD (Hard Disk Drive), an SSD (Solid State Drive), or a flash memory, and may store various programs including an operating system and various data necessary to operate the editing system 1.

[0042] The communication interface (I / F) 15 can be configured with an interface including a communication processor, an antenna, etc. The communication interface 15 controls communication between multiple computers. Examples of communication standards applied to the communication I / F include wireless communication standards including 5G (5th Generation Mobile Communication System), Wi-Fi (registered trademark), Bluetooth (registered trademark), etc. The communication interface 15 may be connected to a network NW. Examples of the network NW include a WAN (Wide Area Network) and / or a LAN (Local Area Network), etc.

[0043] The input / output interface (I / F) 16 may be an interface for transmitting and receiving data between various components of the editing system 1. As shown in Fig. 1, the input / output interface 16 of this embodiment can acquire or transmit predetermined data from, for example, a display 17 and an operation unit 18. Note that the components from which the input / output interface 16 acquires data or the components from which the input / output interface 16 outputs data are not limited to those described above.

[0044] The display 17 may be a display device that displays to the user the results of processing executed by the computer 10, specifically the results of earthquake response analysis. The display 17 may be a liquid crystal display (LCD) or an organic light emitting diode (OLED).

[0045] The operation unit 18 may be a device for realizing input operations by the user. The operation unit 18 may employ a touch panel, a keyboard, a pointing device including a mouse, a microphone, etc., either singly or in combination.

[0046] Earthquake response analysis of a building generally involves simulating the vibration of the building during an earthquake by analyzing the response spectrum when a model of the target building is vibrated based on predetermined ground acceleration waveform data. In the present disclosure, in order to reduce the calculation cost when the above-mentioned simulation is performed using a full three-dimensional model of the building while maintaining the accuracy of estimating the maximum response of the building, editing is performed to reduce the number of data included in the ground acceleration waveform data. Various functions for editing ground acceleration waveform data by the editing system 1 according to this embodiment are described below.

[0047] Fig. 2 is a functional block diagram of a system for editing ground acceleration waveform data according to a first embodiment of the present disclosure. As shown in Fig. 2, the editing system 1 according to this embodiment includes at least a data acquisition unit 20 that acquires ground acceleration waveform data D0, and a data editing unit 30 that edits the ground acceleration waveform data D0. Note that these components can all be realized mainly by the computer 10 described above.

[0048] The data acquisition unit 20 acquires ground acceleration waveform data D0 used in earthquake response analysis. The ground acceleration waveform data D0 may be acquired externally via the communication interface 15, or may be stored in advance in the storage 14 or the like and read out and used as needed. The acquired ground acceleration waveform data D0 is used in earthquake response analysis of a building and may be original data obtained by measuring the ground acceleration of a specific earthquake motion. The ground acceleration waveform data D0 may be time-series data composed of multiple measurements taken at predetermined intervals. For example, well-known data such as the El Centro wave, Taft wave, or Hachinohe wave can be used as this ground acceleration waveform data D0.

[0049] The ground acceleration waveform data D0 in this embodiment is time-series data with the vertical axis representing ground acceleration, as shown in Fig. 3(A) described later. Therefore, in the following description, the formula for this ground acceleration waveform data D0 may be expressed as ug(t), where t = 1, 2, . . . , N.

[0050] The data editing unit 30 edits the ground acceleration waveform data D0 acquired by the data acquisition unit 20. The editing performed by the data editing unit 30 may reduce the number of data items in the ground acceleration waveform data D0 while maintaining the accuracy of the earthquake response analysis results. The data editing unit 30 according to this embodiment includes at least a trimming processing unit 31 and a trimming correction unit 32.

[0051] The trimming processing unit 31 trims a part of the ground acceleration waveform data D0 used for earthquake response analysis, which is acquired by the data acquisition unit 20. The specific method of the trimming process is not particularly limited, but can be performed, for example, by the following method.

[0052] FIG. 3 is an explanatory diagram illustrating an example of the processing performed by the trimming processing unit shown in FIG. 2 , where FIG. 3(A) is a graph showing an example of ground acceleration waveform data D0, FIG. 3(B) is a graph showing an example of a monotonically increasing function using ground acceleration waveform data D0, and FIG. 3(C) is a graph showing an example of trimmed ground acceleration waveform data D1. The trimming processing unit 31 first generates a monotonically increasing function f1 (see FIG. 3(B)) from the ground acceleration waveform data D0 (see FIG. 3(A)) acquired by the data acquisition unit 20. In this embodiment, the monotonically increasing function f1 is time-series data with the cumulative value of acceleration power of the ground acceleration waveform data D0 on the vertical axis. It is also preferable to generate a monotonically increasing function f1 by multiplying it by a coefficient in advance so that the terminal value of the monotonically increasing function f1 becomes 1. This monotonically increasing function f1 can be expressed by the following equation (1):

number

[0053] In this embodiment, the case where the cumulative value of acceleration power of the ground acceleration waveform data D0 is used as the monotonically increasing function f1 is exemplified, but other monotonically increasing functions of the ground acceleration waveform data D0 can also be used. Specifically, the cumulative value of velocity power or the cumulative value of the absolute value of acceleration can also be used.

[0054] In the trimming processing unit 31 according to the present embodiment, the first threshold value a and the second threshold value b are set as the lower limit and the upper limit values of the values of the monotonically increasing function f1, and the trimming range is specified from each of the threshold values a and b. Note that 0 ≤ a < b ≤ 1. The method of setting each of the threshold values a and b is not particularly limited, and can be set, for example, by a user specifying through the operation unit 18. Here, the "trimming range" refers to the range remaining after trimming by the method described below.

[0055] For example, assume that the first threshold value a is set to 0.01 and the second threshold value b is set to 0.99 by the user. Then, the cumulative value of the acceleration power of the ground motion acceleration waveform data D0 exceeds the first threshold value a for the first time at a certain time ta, and then exceeds the second threshold value b for the first time at a certain time tb, as shown in FIG. 3(B). The trimming processing unit 31 in the present embodiment targets for trimming the data corresponding to the section where the value of the monotonically increasing function f1 is smaller than the first threshold value a, that is, the section before the time ta, and the section where the value of the monotonically increasing function f1 is larger than the second threshold value b, that is, the section after the time tb. The ground motion acceleration waveform data D1 trimmed by the trimming processing unit 31 has fewer data than the ground motion acceleration waveform data D0 before trimming, as shown in FIG. 3(C).

[0056] In the above example, the case where the user designates each of the threshold values a and b is illustrated, but they can also be automatically specified within the editing system 1. Therefore, an example of the method for automatically specifying each of the threshold values a and b will be described below.

[0057] First, identify the allowable range T of the building period T of any building for which the response spectrum calculated within a predetermined period range is to be matched. min ≦ T ≦ T max Here, T min and T max may be arbitrarily specified while the user considers the natural period of the building to be designed. Next, set the initial values of each of the threshold values a and b to 0 and 1, respectively. Then, adjust each of the threshold values a and b.

[0058] Specifically, first, the second threshold value b is slightly reduced to generate ground acceleration waveform data (in other words, edited ground acceleration waveform data), and the response spectrum is calculated. The waveform of the calculated response spectrum is compared with the waveform of the response spectrum calculated in advance using the ground acceleration waveform data D0 before trimming, and it is determined whether the difference exceeds the maximum allowable error. The above-mentioned series of steps is repeated until the maximum allowable error is exceeded, and the smallest value that does not exceed the maximum allowable error is identified as the second threshold value b. It is recommended that the user preset a desired value for the maximum allowable error.

[0059] Next, the first threshold value a is determined using the same process as that used for the second threshold value b described above. Specifically, the first threshold value a is first slightly increased to generate ground acceleration waveform data, and a response spectrum is then calculated. The waveform of the response spectrum calculated here is compared with the waveform of the response spectrum calculated in advance using the ground acceleration waveform data D0 before trimming, and it is determined whether the difference exceeds the maximum allowable error. This series of steps is repeated until the maximum allowable error is exceeded, and the largest value that does not exceed the maximum allowable error is determined as the first threshold value a.

[0060] As described above, when the first threshold value a and the second threshold value b are adjusted using the error between the calculation result of the response spectrum calculated over a predetermined period range using the ground acceleration waveform data D0 and the calculation result of the response spectrum calculated over a predetermined period range using the edited ground acceleration waveform data, appropriate threshold values ​​can be set regardless of the user's knowledge.

[0061] The trimming correction unit 32 corrects the ground acceleration waveform data D1 trimmed by the trimming processing unit 31, and in particular corrects the data at the start of the trimming range of the trimmed ground acceleration waveform data D1. This trimming correction unit 32 is employed to avoid or suppress a decrease in the accuracy of the earthquake response analysis caused by the trimming processing in the trimming processing unit 31. More specifically, the correction by the trimming correction unit 32 focuses on the fact that the initial acceleration of the ground acceleration waveform data D0 has a non-negligible effect on the displacement response of a single-degree-of-freedom (SDOF) vibration system with a long period, and aims to substantially eliminate this effect. The trimming correction by the trimming correction unit 32 can be performed, for example, by the following method.

[0062] Fig. 4 is an explanatory diagram illustrating an example of the processing performed by the trimming correction unit shown in Fig. 2, with Fig. 4(A) being a graph showing an example of trimmed ground acceleration waveform data D1 and Fig. 4(B) being a graph showing an example of corrected ground acceleration waveform data D2. The trimming correction unit 32 according to this embodiment corrects the data at the start point P1 (see Fig. 4(B)) of the trimmed ground acceleration waveform data D1 based on data from a section before the trimming range specified by the trimming processing unit 31.

[0063] More specifically, the trimming correction unit 32 first acquires the data (ug(1), ug(2), ..., ug(ta-1)) of the section that has been trimmed by the trimming processing unit 31 as being smaller than the first threshold a. Next, a value determined based on ug(1), ug(2), ..., ug(ta-1), such as a sum, is determined as a function f2 for correcting the data at the start point P1 of the trimmed ground acceleration waveform data D1. Then, the correction is performed by adding this function f2 to the start point P1 of the trimmed ground acceleration waveform data D1. By performing the above-described correction, corrected ground acceleration waveform data D2 as shown in FIG. 4(B) can be obtained.

[0064] As shown in Figure 4(B), the corrected ground acceleration waveform data D2 is corrected so that the value at the starting point P1 is larger than that of the trimmed ground acceleration waveform data D1. By performing such correction, it becomes possible to perform earthquake response analysis, specifically, calculation of the maximum response, with high accuracy.

[0065] The editing system 1 according to this embodiment may further include a data output unit 40, as shown in Fig. 2. The data output unit 40 outputs the data obtained through the data editing unit 30, specifically the corrected ground acceleration waveform data D2, as edited ground acceleration waveform data to a device or the like that performs earthquake response analysis. When earthquake response analysis is performed within the editing system 1, the data output unit 40 may adjust the output destination so that the edited ground acceleration waveform data is stored in the storage 14 or the like.

[0066] According to the editing system 1 having the above-described configuration, it is possible to reduce the number of pieces of ground acceleration waveform data used in earthquake response analysis, thereby reducing the calculation cost of earthquake response analysis. Furthermore, in this embodiment, a range of ground acceleration waveform data with small acceleration power is specified as the range to be trimmed, so that it is possible to avoid or suppress a decrease in the evaluation accuracy of earthquake response analysis that would otherwise be caused by a reduction in the number of pieces of ground acceleration waveform data.

[0067] Next, a method for evaluating ground acceleration waveform data according to this embodiment will be described below, mainly with reference to Fig. 5. In the following description, a method for editing ground acceleration waveform data using the above-mentioned editing system 1 will be exemplified, but the evaluation method of the present disclosure can also be implemented in systems other than the editing system 1. The method for editing ground acceleration waveform data according to this embodiment, which is realized by the editing system 1, can be realized by a computer 10. The method for evaluating ground acceleration waveform data according to this embodiment can be provided in the form of a program or program product for causing the processor 11 of the computer 10 to execute predetermined operations, or in the form of a non-transitory computer-readable recording medium storing the program.

[0068] The method for editing ground acceleration waveform data according to this embodiment includes, by a computer 10, at least a step of acquiring ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of a building (corresponding to step S01 described later), a step of trimming the ground acceleration waveform data D0 to be used in earthquake response analysis (corresponding to steps S03 and S04 described later), and a step of correcting data at a start point P1 of the trimming range of the trimmed ground acceleration waveform data D1 (corresponding to step S05 described later). These steps will be described in detail below.

[0069] 5 is a flowchart showing an example of a method for editing ground acceleration waveform data according to the first embodiment of the present disclosure. When the method for editing ground acceleration waveform data according to this embodiment is started, as shown in FIG. 5, first, the data acquisition unit 20 acquires ground acceleration waveform data D0 (step S01). When the data editing unit 30 receives the ground acceleration waveform data D0, first, the trimming processing unit 31 calculates a monotonically increasing function f1 using acceleration power from the ground acceleration waveform data D0 (step S02).

[0070] Next, the trimming processor 31 specifies the trimming range based on the monotonically increasing function f1 (step S03). The method for specifying the trimming range may be the same as that described above. That is, the first threshold value a and the second threshold value b specified by the user or the like may be acquired, and the range where the value of the monotonically increasing function f1 is smaller than the first threshold value a and larger than the second threshold value b may be determined as the region to be trimmed from the ground acceleration waveform data D0.

[0071] Once the trimming range is specified, the trimming processing unit 31 trims the ground acceleration waveform data D0 (step S04). As shown in Fig. 3(C), the trimmed ground acceleration waveform data D1 has a reduced number of data points compared to the ground acceleration waveform data D0 before trimming.

[0072] The starting data of the ground acceleration waveform data D1 trimmed by the trimming processing unit 31 is then corrected by the trimming correction unit 32 (step S05). The method for correcting the starting data may be the method already described above. That is, a method may be adopted in which the sum of the data determined by the trimming processing unit 31 to be outside the trimming range and trimmed in step S04 as being in a section smaller than the first threshold value a is added to the starting data of the trimmed ground acceleration waveform data D1.

[0073] The corrected ground acceleration waveform data D2 obtained through step S05 is sent to the data output unit 40 and output as edited ground acceleration waveform data (step S06). The edited ground acceleration waveform data can be output to, for example, a device that performs earthquake response analysis.

[0074] In a device that performs earthquake response analysis, the edited ground acceleration waveform data is used for the earthquake response analysis. The earthquake response analysis may include the following steps: calculating the building response using the edited ground acceleration waveform data and a full three-dimensional model of an arbitrary building; and identifying the maximum response from the building response and evaluating the safety of the designed building. Note that "building response" refers to the deformation, velocity, acceleration, etc. of a building when it vibrates due to an earthquake, strong wind, etc.

[0075] As described above, the method for editing ground acceleration waveform data according to this embodiment can reduce the number of pieces of ground acceleration waveform data used in earthquake response analysis. In addition, by using cumulative values ​​such as acceleration power to specify the trimming range and correcting the data based on partially trimmed data, the effect of the trimming process on earthquake response analysis can be minimized, and high analytical accuracy can be maintained.

[0076] <Second embodiment> In the first embodiment described above, a method for reducing the calculation cost of earthquake response analysis by trimming ground acceleration waveform data, etc., has been described. A method for reducing the calculation cost of earthquake response analysis by a different method from the above-described method will be described below as a second embodiment. The ground acceleration waveform data editing system 1A, editing method, and program according to the second embodiment described below may share the same configuration as those in the first embodiment. More specifically, for example, the editing system 1A may be primarily composed of a computer 10, similar to the editing system 1 described above. Therefore, the following description will focus on the configuration that is different from that of the first embodiment, with the same reference numerals used to designate components that are common to those in the first embodiment.

[0077] 6 is a functional block diagram of a system for editing ground acceleration waveform data according to a second embodiment of the present disclosure. As shown in FIG. 6, the editing system 1A for editing ground acceleration waveform data according to this embodiment includes a data acquisition unit 20 that acquires ground acceleration waveform data D0 of earthquake motion used in earthquake response analysis of a building, and a data editing unit 30A that edits the ground acceleration waveform data D0 acquired by the data acquisition unit 20. Of these, the data acquisition unit 20 may be the same as that described in the first embodiment. On the other hand, the data editing unit 30A employs an editing method different from that of the data editing unit 30 of the first embodiment. Furthermore, the editing system 1A may further include a data output unit 40, similar to the editing system 1.

[0078] As shown in FIG. 6, the data editing unit 30A according to this embodiment includes a filter processing unit 35 that adjusts a plurality of measurement values, which are composed of numerical data and are included in the ground acceleration waveform data D0, based on other consecutive measurement values, and a downsampling processing unit 36 ​​that thins out some of the adjusted measurement values.

[0079] The filter processing unit 35 filters the measurement values ​​in the ground acceleration waveform data D0 acquired by the data acquisition unit 20 as preprocessing for processing in the downsampling processing unit 36, which will be described later. The filter used in the filter processing unit 35 may be a filter that functions to equalize the sum of ground accelerations input in earthquake response analysis, and is preferably, for example, an FIR (Finite Impulse Response) filter.

[0080] FIG. 7 is an explanatory diagram illustrating an example of the processing performed by the filter processor shown in FIG. 6 , showing a graph of a portion of ground acceleration waveform data. Here, we will explain a case where the total number of measurement values ​​in the ground acceleration waveform data D0 shown in FIG. 7 is reduced by half in the data editor 30A. In this case, the filter processor 35 first adjusts specific measurement values, e.g., all measurement values, that are not deleted by the downsampling processor 36, based on other measurement values ​​that follow the measurement value. In other words, the filter processor 35 adjusts a specific measurement value based on one or more measurement values ​​taken immediately before or after the specific measurement value. In this case, the filter processor 35 may include a process of multiplying each measurement value by a predetermined weighting coefficient so that the area A3 defined by two adjusted measurement values ​​within a predetermined time interval is equal to the area A0 defined by the three unadjusted measurement values ​​within the same time interval, as shown in FIG. 7 . This process results in the filtered ground acceleration waveform data D3 shown in FIG. 7 .

[0081] The downsampling processor 36 thins out some of the measured values ​​of the ground acceleration waveform data. More specifically, assuming that the ground acceleration waveform data D0 is made up of measured values ​​measured at intervals of, for example, 0.01 seconds, the downsampling processor 36 of this embodiment corrects the time interval of these measured values ​​to an integer multiple, thereby extracting some of the measured values ​​and thinning out the measured values ​​other than the extracted measured values.

[0082] To correct the time intervals described above, the downsampling processing unit 36 ​​first sets an interval Ndt for extracting measurement values, where Ndt is an integer equal to or greater than 2. It is recommended that Ndt be set with reference to its ratio to the primary period of the building being designed. Next, the filtering processing unit 35 creates functions w(1), w(2), ..., w(Ndt+1) that represent weighting coefficients for Ndt+1 consecutive measurement values. This function is used to perform time-domain filtering, and can be expressed, for example, as in the following equation (2).

number

[0083] FIG. 8 is an explanatory diagram illustrating an example of the processing performed by the downsampling processor shown in FIG. 6 . FIG. 8(A) is a graph showing an example of ground acceleration waveform data D0, FIG. 8(B) is a graph showing an enlarged view of the X portion of FIG. 8(A), and FIG. 8(C) is a graph showing an example of a portion of the measurement values ​​constituting the graph shown in FIG. 8(B) extracted at predetermined intervals. When downsampling the ground acceleration waveform data D0 shown in FIGS. 8(A) and 8(B), the above-described function is applied to the equation ug(t) of the ground acceleration waveform data D0 to obtain filtered ground acceleration waveform data D3. Here, the equation ugf(t) of the filtered ground acceleration waveform data D3 can be expressed by the following equation (3). Note that in the above description, the range of t was defined as t = 1, 2, . . . , N. However, for convenience, t = -1 and 0 are added to the range of t, and ug(-1) = ug(0) = 0 is defined.

number

[0084] After the filtering process by the filtering processor 35 is completed, downsampling using Ndt is performed in the downsampling processor 36. The equation ugd(t) of the downsampled ground acceleration waveform data D4 can be expressed by, for example, the following equation (4).

number

[0085] As can be seen from the above formula (4), in the editing system 1A of this embodiment, the number of pieces of downsampled ground acceleration waveform data D4 is reduced in proportion to the value of Ndt. Specifically, when Ndt=2, the number of pieces of downsampled ground acceleration waveform data D4 is half the number of pieces of ground acceleration waveform data D0.

[0086] In this embodiment, Ndt set by the downsampling processing unit 36 ​​is an integer equal to or greater than 2. Therefore, the resulting downsampled ground acceleration waveform data D4 has measurement values ​​at time intervals that are an integer multiple of the time intervals of the measurement values ​​of the ground acceleration waveform data D0. On the other hand, there may be cases where it is desired to set the time intervals of the downsampled ground acceleration waveform data D4 more precisely. In consideration of such cases, the data editing unit 30A of this embodiment may further include an upsampling processing unit 37.

[0087] The upsampling processor 37 interpolates the ground acceleration waveform data before processing by the filter processor 35 and downsampling processor 36. In this embodiment, the measurement values ​​included in the ground acceleration waveform data D0 are used for the ground acceleration waveform data D0. Examples of interpolation methods include, but are not limited to, linear interpolation and spectral interpolation. For example, the upsampling processor 37 can generate waveform data at time intervals of 0.005 seconds using linear interpolation from the ground acceleration waveform data D0 measured at time intervals of 0.01 seconds. In this case, if Ndt=3 is set and the above-mentioned waveform data is processed by the filter processor 35 and downsampling processor 36, the resulting downsampled ground acceleration waveform data D4 will have a time interval of 0.015 seconds. This allows downsampling at a time interval 1.5 times longer than the time interval of the ground acceleration waveform data D0.

[0088] As described above, the editing system 1A according to this embodiment can also reduce the number of pieces of ground acceleration waveform data used in earthquake response analysis, thereby reducing the calculation cost of the earthquake response analysis. Furthermore, in this embodiment, each measurement value is adjusted by filtering before downsampling, so that it is possible to avoid or suppress a decrease in the evaluation accuracy of the earthquake response analysis that would otherwise be caused by a reduction in the number of pieces of ground acceleration waveform data.

[0089] Next, a method for evaluating ground acceleration waveform data according to this embodiment will be described below, mainly with reference to Fig. 9. In the following description, a method for editing ground acceleration waveform data using the above-mentioned editing system 1A will be exemplified, but the evaluation method of the present disclosure can also be implemented in systems other than the editing system 1A. The method for editing ground acceleration waveform data according to this embodiment, which is realized by the editing system 1A, can be realized by a computer 10. The method for evaluating ground acceleration waveform data according to this embodiment can be provided in the form of a program or program product for causing the processor 11 of the computer 10 to execute predetermined operations, or in the form of a non-transitory computer-readable recording medium storing the program.

[0090] The method for editing ground acceleration waveform data according to this embodiment includes, by a computer 10, at least a step of acquiring ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of a building (corresponding to step S11 described later), a step of adjusting a plurality of measurement values ​​included in the ground acceleration waveform data to be used in earthquake response analysis based on other consecutive measurement values ​​(corresponding to step S13 described later), and a step of thinning out some of the measurement values ​​(corresponding to step S14 described later). These steps will be described in detail below.

[0091] 9 is a flowchart showing an example of a method for editing ground acceleration waveform data according to the second embodiment of the present disclosure. When the method for editing ground acceleration waveform data according to this embodiment is started, as shown in FIG. 9, first, the data acquisition unit 20 acquires ground acceleration waveform data D0 (step S11). When the data editing unit 30A receives the ground acceleration waveform data D0, first, the downsampling processing unit 36 ​​sets the extraction interval Ndt of the measurement values ​​to, for example, Ndt=2 (step S12).

[0092] Next, the filter processing unit 35 filters the measurement values ​​in the ground acceleration waveform data D0 (step S13). The filtering method may be one of those already described above. That is, a method may be adopted in which a specific measurement value in the ground acceleration waveform data D0 is multiplied by a predetermined weighting coefficient using an FIR filter.

[0093] After the filtering by the filter processing unit 35 is completed, the downsampling processing unit 36 ​​then performs downsampling by thinning out the measured values ​​of the filtered ground acceleration waveform data D3 based on the set value of Ndt (step S14). The downsampling method may be any of the methods already described above. Specifically, in this embodiment, since Ndr=2 is set, downsampling can be performed by, for example, extracting only the odd-numbered measured values ​​from the measured values ​​constituting the filtered ground acceleration waveform data D3 and thinning out the remaining even-numbered measured values.

[0094] Finally, the data editing unit 30A sends the ground acceleration waveform data from which some of the measurement values ​​have been thinned out in the above-mentioned step, in other words, the downsampled ground acceleration waveform data D4, to the data output unit 40. Upon receiving the downsampled ground acceleration waveform data D4, the data output unit 40 outputs the data as ground acceleration waveform data (step S15).

[0095] In the editing method according to the present embodiment, upsampling by the upsampling processor 37 may be performed at any timing before step S13. The specific method of upsampling has already been described above, and therefore will not be described here.

[0096] As described above, the method for editing ground acceleration waveform data according to this embodiment can reduce the number of pieces of ground acceleration waveform data used in earthquake response analysis. In addition, in this embodiment, filtering is performed before downsampling to adjust each measurement value in advance, so that it is possible to avoid or suppress a reduction in the evaluation accuracy of earthquake response analysis that would otherwise be caused by a reduction in the number of pieces of ground acceleration waveform data.

[0097] <Third embodiment> In the first embodiment described above, the number of data items is reduced by trimming, and in the second embodiment, the number of data items is reduced by downsampling. However, these methods can also be combined. Therefore, as a third embodiment of the present disclosure, a system 1B, an editing method, and a program for editing ground acceleration waveform data that combine the above-mentioned trimming and downsampling will be described below. In the third embodiment described below, components similar to those described in the first and second embodiments will be designated by the same reference numerals, and their description will be omitted.

[0098] Fig. 10 is a functional block diagram of a system for editing ground acceleration waveform data according to a third embodiment of the present disclosure. As shown in Fig. 10, the system 1B for editing ground acceleration waveform data according to this embodiment may be similar to the above-described editing systems 1 and 1A, except for the configuration of a data editing unit 30B. Furthermore, the system 1B for editing ground acceleration waveform data according to this embodiment includes a computer 10, similar to the editing systems 1 and 1A according to the other embodiments.

[0099] The data editing unit 30B edits the ground acceleration waveform data D0 acquired by the data acquisition unit 20. Specifically, the data editing unit 30B includes a trimming editing unit 51 and a downsampling editing unit 52.

[0100] The trimming editing unit 51 edits the ground acceleration waveform data D0 or the downsampled ground acceleration waveform data D4 by trimming. This trimming editing unit 51 may include a trimming processing unit 31 and a trimming correction unit 32. Details of the trimming processing unit 31 and the trimming correction unit 32 have been explained in the first embodiment, so explanations thereof will be omitted here.

[0101] The downsampling editing unit 52 edits the ground acceleration waveform data D2 or the ground acceleration waveform data D0 corrected by downsampling. The downsampling editing unit 52 may include a filter processing unit 35, a downsampling processing unit 36, and an upsampling processing unit 37. Details of the filter processing unit 35, the downsampling processing unit 36, and the upsampling processing unit 37 have been explained in the second embodiment, so explanations thereof will be omitted here.

[0102] In the data editing unit 30B according to this embodiment, the ground acceleration waveform data D0 acquired by the data acquiring unit 20 is first edited by the trimming editing unit 51, and then further edited by the downsampling editing unit 52. In this regard, the editing content in the trimming editing unit 51 is the same as that described in the first embodiment. On the other hand, the editing content in the downsampling editing unit 52 is slightly different from the editing content in the second embodiment in that downsampling is performed on the ground acceleration waveform data after editing in the trimming editing unit 51, i.e., the corrected ground acceleration waveform data D2. Therefore, the processing content in the downsampling editing unit 52 according to this embodiment will be briefly described below.

[0103] FIG. 11 is an explanatory diagram illustrating an example of the processing performed by the downsampling editing unit shown in FIG. 10. Specifically, FIG. 11(A) is a graph illustrating an example of corrected ground acceleration waveform data D2 edited by the trimming editing unit. FIG. 11(B) is a graph illustrating an example of filtered ground acceleration waveform data D5 obtained by filtering the corrected ground acceleration waveform data D2 shown in FIG. 11(A). FIG. 11(C) is a graph illustrating an enlarged Y portion of FIG. 11(B). Among the circles representing measurement values ​​in FIG. 11(C), solid circles exemplify measurement values ​​extracted by the downsampling processing unit 36, and open circles exemplify measurement values ​​thinned out by the downsampling processing unit 36. Upon receiving the corrected ground acceleration waveform data D2 from the trimming editing unit 51, the downsampling editing unit 52 first sets the interval Ndt for extracting measurement values. Next, the filter processing unit 35 creates functions w(1), w(2), ..., w(Ndt+1) that represent weighting factors for Ndt+1 consecutive measured values. Then, two data points with a value of 0 are added to the beginning of the corrected ground acceleration waveform data D2 to obtain corrected ground acceleration waveform data ugpf=0, 0, ug(ta)+f2, ug(ta+1), ..., ug(tb-1). As in the case of equation (3) above, for convenience, the range of t is expanded to ugpf(-1)=ugpf(0)=0, ugpf(1)=ug(ta)+f2, ...

[0104] When the corrected ground acceleration waveform data ugpf=0,0,ug(ta)+f2,ug(ta+1),...,ug(tb-1) is obtained, the filter processing unit 35 applies a function representing a weighting function created in advance to obtain filtered ground acceleration waveform data D5(ugf2(t)) shown in the following equation (5).

number

[0105] Finally, the downsampling editing unit 52 performs downsampling using Ndt in the downsampling processing unit 36. The equation ugd2(t) of the downsampled ground acceleration waveform data D6 can be expressed, for example, by the following equation (6).

number

[0106] Before filtering, the downsampling editing unit 52 may increase the number of pieces of ground acceleration waveform data D2 corrected by the upsampling processing unit 37, as necessary. The method for increasing the measurement values ​​by the upsampling processing unit 37 is the same as that described in the second embodiment, and therefore will not be described here.

[0107] As described above, the editing system 1B according to this embodiment can significantly reduce the number of pieces of ground acceleration waveform data used in earthquake response analysis, thereby enabling a significant reduction in the calculation cost of earthquake response analysis. Furthermore, in this embodiment, the trimming correction unit 32 and the filter processing unit 35 are employed, so that high evaluation accuracy in earthquake response analysis can be maintained even for edited ground acceleration waveform data.

[0108] Next, a method for evaluating ground acceleration waveform data according to this embodiment will be described below, mainly with reference to Fig. 12. In the following description, a method for editing ground acceleration waveform data using the above-mentioned editing system 1B will be exemplified, but the evaluation method of the present disclosure can also be implemented in systems other than the editing system 1B. The method for editing ground acceleration waveform data according to this embodiment, which is realized by the editing system 1B, can be realized by a computer 10. The method for evaluating ground acceleration waveform data according to this embodiment can be provided in the form of a program or program product for causing the processor 11 of the computer 10 to execute predetermined operations, or in the form of a non-transitory computer-readable recording medium storing the program.

[0109] The method for editing ground acceleration waveform data according to this embodiment includes, by a computer 10, at least the steps of acquiring ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of a building (corresponding to step S01 described later), trimming the ground acceleration waveform data D0 to be used in earthquake response analysis (corresponding to steps S03 and S04 described later), correcting data at a starting point P1 of the trimming range of the trimmed ground acceleration waveform data D1 (corresponding to step S05 described later), adjusting multiple measurement values ​​included in the corrected ground acceleration waveform data based on other consecutive measurement values ​​(corresponding to step S13A described later), and thinning out some of the measurement values ​​(corresponding to step S14A described later). These steps will be described in detail below.

[0110] FIG. 12 is a flowchart showing an example of a method for editing ground acceleration waveform data according to the third embodiment of the present disclosure. The method for editing ground acceleration waveform data according to this embodiment may be similar to the method for editing ground acceleration waveform data described in the first embodiment from steps S01 to S05. Briefly, when this method is started, as shown in FIG. 12, first, ground acceleration waveform data D0 is acquired by the data acquisition unit 20 (step S01). The acquired ground acceleration waveform data D0 is first sent to the trimming editing unit 51, where trimming editing is performed. More specifically, first, the trimming processing unit 31 calculates a monotonically increasing function f1 using acceleration power from the ground acceleration waveform data D0 (step S02).

[0111] Next, the trimming processing unit 31 specifies a trimming range based on the monotonically increasing function f1 (step S03). Once the trimming range is specified, the trimming processing unit 31 trims the ground acceleration waveform data D0 (step S04). The ground acceleration waveform data D1 trimmed by the trimming processing unit 31 is then corrected at its starting end by the trimming correction unit 32 (step S05).

[0112] The corrected ground acceleration waveform data D2 obtained through the above-mentioned step S05 is sent to the downsampling editing unit 52, where downsampling editing is performed. More specifically, first, the downsampling processing unit 36 ​​sets the extraction interval Ndt of the measurement values ​​(step S12).

[0113] Next, the filter processing unit 35 executes filtering of the measurement values ​​in the corrected ground acceleration waveform data D2 (step S13A). The filtering method may be the same as that described above in this embodiment.

[0114] After the filtering by the filter processing unit 35 is completed, the downsampling processing unit 36 ​​performs downsampling by thinning out the measured values ​​of the filtered ground acceleration waveform data D5 based on the set value of Ndt (step S14A). The downsampling method may be any of the methods already described above. Specifically, for example, downsampling can be performed by extracting the measured values ​​represented by solid circles in Figure 11(C) and thinning out the measured values ​​represented by open circles in Figure 11(C).

[0115] Finally, the data editing unit 30B sends the ground acceleration waveform data obtained in step S14A, i.e., the downsampled ground acceleration waveform data D6, to the data output unit 40. Upon receiving the downsampled ground acceleration waveform data D6, the data output unit 40 outputs the data as edited ground acceleration waveform data (step S15A).

[0116] As described above, the method for editing ground acceleration waveform data according to this embodiment can significantly reduce the number of pieces of ground acceleration waveform data used in earthquake response analysis. In addition, this embodiment can avoid or suppress a decrease in the evaluation accuracy of earthquake response analysis that would otherwise be caused by a reduction in the number of pieces of ground acceleration waveform data by performing trimming correction and filtering.

[0117] In the third embodiment described above, the case where editing by the trimming editing unit 51 is performed first and editing by the downsampling editing unit 52 is performed later has been exemplified, but the order of these two editing steps can also be reversed. In this case, the method of editing the ground acceleration waveform data is to first perform steps S11 to S14 described in the second embodiment, and then perform the trimming editing process by the trimming editing unit 51 on the obtained downsampled ground acceleration waveform data D4. The trimming editing process performed here may be, for example, the process shown as steps S02 to S06 in the first embodiment. In this case, the same effects as those in the third embodiment can be expected.

[0118] In each of the above embodiments, the term "processor" refers to a processor in a broad sense, and includes general-purpose processors (such as the CPUs mentioned above) and dedicated processors (such as GPUs: Graphics Processing Units, ASICs: Application Specific Integrated Circuits, FPGAs: Field Programmable Gate Arrays, programmable logic devices, etc.).

[0119] Furthermore, the operations of the processors in the above embodiments may not only be performed by a single processor, but may also be performed by multiple processors located at physically separate locations working together. Furthermore, the order of the operations of the processors is not limited to the order described in the above embodiments, and may be changed as appropriate.

[0120] The above describes an editing system, an editing method, and a program according to an embodiment. The embodiment may be in the form of a program product that causes a computer to execute the functions of each unit of the editing system. The embodiment may be in the form of a non-transitory computer-readable storage medium that stores the program or program product.

[0121] Furthermore, the processing flow of the editing method and program described in the above embodiment is also an example, and unnecessary steps may be deleted, new steps may be added, or the processing order may be rearranged within the scope of the main idea.

[0122] In the above embodiment, the processing according to the embodiment is realized by a software configuration using a computer by executing a program, but the present invention is not limited to this. The above embodiment may be realized by, for example, a hardware configuration or a combination of a hardware configuration and a software configuration.

[0123] The present disclosure is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present disclosure. All of these modifications are included in the technical concept of the present disclosure. Furthermore, unless otherwise specified in the specification, each component of the present disclosure is not limited to one, and may be present in multiple forms. [Explanation of symbols]

[0124] 1, 1A, 1B Editing System 10. Computers 20 Data Acquisition Section 30, 30A, 30B Data Editorial Department 31 Trimming processing section 32 Trimming correction section 35 Filter processing section 36 Downsampling processing section 37 Upsampling processing unit 40 Data output section 51 Trimming Editorial Department 52 Downsampling Editorial Department D0 Ground acceleration waveform data D1 Trimmed ground acceleration waveform data D2 Corrected ground acceleration waveform data D3, D5 Filtered ground acceleration waveform data D4, D6 Downsampled ground acceleration waveform data

Claims

1. a data acquisition unit for acquiring ground acceleration waveform data of earthquake motion used in earthquake response analysis of a building; a data editing unit that edits the ground acceleration waveform data acquired by the data acquisition unit, The data editing unit a trimming processing unit that trims the ground acceleration waveform data used in earthquake response analysis; a trimming correction unit that corrects data at a start end of a trimming range of the ground acceleration waveform data trimmed by the trimming processing unit, Editing system for ground acceleration waveform data.

2. the trimming processing unit specifies the trimming range based on a monotonically increasing function using the ground acceleration waveform data. The system for editing ground acceleration waveform data according to claim 1 .

3. the trimming processing unit trims a section in which the value of the monotonically increasing function is smaller than a first threshold and a section in which the value is larger than a second threshold that is larger than the first threshold. The system for editing ground acceleration waveform data according to claim 2.

4. The first threshold value and the second threshold value are adjusted so that an error between a calculation result of a response spectrum calculated within a predetermined period range using the ground acceleration waveform data and a calculation result of a response spectrum calculated within the predetermined period range using the edited ground acceleration waveform data does not exceed a predetermined error range.

4. The system for editing ground acceleration waveform data according to claim 3.

5. the trimming correction unit corrects data at a starting end of the trimmed ground acceleration waveform data based on data of a section before the trimming range. The system for editing ground acceleration waveform data according to claim 1 .

6. The data editing unit a filter processor that adjusts the plurality of measurement values ​​included in the trimmed ground acceleration waveform data based on other consecutive measurement values; A downsampling processing unit that thins out a portion of the measurement values, The system for editing ground acceleration waveform data according to claim 1 .

7. The filtering unit adjusts the measurement value by filtering it using an FIR filter.

7. The system for editing ground acceleration waveform data according to claim 6.

8. an upsampling processor that increases the measurement values ​​included in the trimmed ground acceleration waveform data using an interpolation method; The downsampling processing unit thins out a part of the measurement values ​​increased by the upsampling processing unit.

7. The system for editing ground acceleration waveform data according to claim 6.

9. a data acquisition unit for acquiring ground acceleration waveform data of earthquake motion used in earthquake response analysis of a building; a data editing unit that edits the ground acceleration waveform data acquired by the data acquisition unit, The data editing unit a filter processing unit that adjusts a plurality of measurement values ​​included in the ground acceleration waveform data used for earthquake response analysis based on other consecutive measurement values; a downsampling processing unit that thins out a portion of the measurement values, Editing system for ground acceleration waveform data.

10. The data editing unit a trimming processing unit that trims the ground acceleration waveform data from which a portion of the measurement values ​​has been thinned out by the downsampling processing unit; a trimming correction unit that corrects data at a start end of a trimming range of the ground acceleration waveform data trimmed by the trimming processing unit, The system for editing ground acceleration waveform data according to claim 9.

11. By computer, acquiring ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of the building; trimming the ground acceleration waveform data used for earthquake response analysis; correcting data at the start end of the trimming range of the trimmed ground acceleration waveform data; How to edit ground acceleration waveform data.

12. By computer, acquiring ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of the building; adjusting a plurality of measured values ​​included in the ground acceleration waveform data used for earthquake response analysis based on other consecutive measured values; and decimating a portion of the adjusted measurements. How to edit ground acceleration waveform data.

13. The computer processor acquiring ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of the building; trimming the ground acceleration waveform data used for earthquake response analysis; correcting data at the start end of the trimming range of the trimmed ground acceleration waveform data; program.

14. The computer processor acquiring ground acceleration waveform data of earthquake motion to be used in earthquake response analysis of the building; adjusting a plurality of measured values ​​included in the ground acceleration waveform data used for earthquake response analysis based on other consecutive measured values; and thinning out some of the measurement values. program.

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