Design support system and design support method

Abstract

We provide a design support system that enables efficient optimization of equipment, piping, and other facilities, as well as building structures. [Solution] The design support system comprises a building vibration evaluation unit that performs vibration evaluation of the building structure, and an equipment / piping vibration evaluation unit that performs vibration evaluation of equipment / piping in the building structure using the information from the building structure vibration evaluation results. The design support system also comprises a design margin calculation unit that calculates the design margin of equipment / piping in the proposed equipment / piping layout, and a building design variable selection unit that selects member elements to modify the design variables in the building structure based on the design margin calculated by the design margin calculation unit. Furthermore, the design support system comprises an equipment / piping layout generation unit that generates a new equipment / piping layout plan based on the design margin calculated by the design margin calculation unit.

Description

[Technical Field]

[0001] This invention relates to a design support system and a design support method for performing calculations to optimize building structures. [Background technology]

[0002] Plant facilities house a large amount of equipment and piping (hereinafter referred to as "equipment and piping"). Therefore, the burden of designing the layout to improve safety against vibration phenomena is significant. To reduce this burden, there is a growing demand for technologies that automatically optimize equipment and piping layout and building structure based on vibration evaluation results of the equipment and piping. Regarding conventional design techniques for layout, a technology has been disclosed that automatically optimizes pipe routing with the aim of improving the constructability of piping (see, for example, Patent Document 1). This technology quantitatively evaluates the working space of the piping by using an evaluation formula that reflects the presence or absence of equipment near the piping. Then, it optimizes the pipe routing using a genetic algorithm. Furthermore, a building structure optimization technique has been proposed that selects a large number of design variables related to the cross-sectional shape of building members based on the sectional forces of the members (see, for example, Patent Document 2). This technique makes it possible to optimize the building structure with fewer structural analyses. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2002-288250 [Patent Document 2] Japanese Patent Publication No. 2022-150095 [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] The technology described in Patent Document 1 focuses on constructability. Since the evaluation index for constructability utilizes positional information of the layout, it can be evaluated using a simple formula. Therefore, constructability can be optimized in a short amount of time. Furthermore, the technology described in Patent Document 2 selects design variables for the cross-sectional shape from the evaluation results of the cross-sectional forces of building members. However, when selecting design variables for the building structure in the vibration evaluation of equipment and piping, analysis is required to estimate effective building design variables. Moreover, vibration evaluation indices often require structural analysis, making it difficult to optimize them in a short period of time. Therefore, optimizing the placement of equipment and piping in conjunction with the building structure requires time for vibration analysis.

[0005] To solve the problems described above, the present invention provides a design support system and a design support method that can efficiently optimize equipment such as machinery and piping, as well as building structures.

[0006] Furthermore, the above-mentioned and other objectives of the present invention, as well as the novel features of the present invention, will be made clearer by the description herein and the accompanying drawings. [Means for solving the problem]

[0007] The design support system of the present invention performs calculations to optimize the building structure and the arrangement of equipment and piping. The design support system includes a building vibration evaluation unit that performs vibration evaluation of the building structure. The design support system also includes an equipment and piping vibration evaluation unit that performs vibration evaluation of equipment and piping in the building structure using information from the vibration evaluation results of the building structure, and a design margin calculation unit that calculates the design margin of equipment and piping in the proposed equipment and piping arrangement. Furthermore, the design support system includes a building design variable selection unit that selects member elements to modify the design variables in the building structure based on the design margin calculated by the design margin calculation unit, and an equipment and piping arrangement generation unit that generates a new equipment and piping arrangement based on the design margin calculated by the design margin calculation unit.

[0008] Furthermore, the design support system of the present invention performs calculations to optimize the building structure and the arrangement of equipment and piping. The design support system comprises a building evaluation result storage unit that stores the results of vibration evaluation of the building structure, and an equipment and piping arrangement plan storage unit that stores arrangement plans for equipment and piping. The design support system also comprises a building and equipment / piping combination unit that selects a combination of building structure and equipment / piping arrangement plan based on the vibration evaluation results of the building structure stored in the evaluation result storage unit and the arrangement plans for equipment and piping stored in the equipment and piping arrangement plan storage unit. Furthermore, the design support system comprises an equipment and piping vibration evaluation unit that performs vibration evaluation of equipment and piping in the building structure in the combination selected by the building and equipment / piping combination unit, and a design margin calculation unit that calculates the design margin for equipment and piping in the equipment and piping arrangement plan.

[0009] Furthermore, the design support method of the present invention performs vibration evaluation of the building structure based on the proposed building structure, and based on the results of the vibration evaluation of the building structure, performs vibration evaluation of the equipment and piping in the proposed equipment and piping arrangement relative to the building structure.The design support method then calculates the design margin for the equipment and piping in the proposed equipment and piping arrangement, selects member elements to modify the design variables in the building structure based on the calculated design margin, and generates a new equipment and piping arrangement based on the calculated design margin. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a design support system and a design support method that can efficiently optimize equipment such as machinery and piping, as well as building structures.

[0011] Furthermore, issues, configurations, and effects other than those mentioned above will be clarified by the following description of the embodiments. [Brief explanation of the drawing]

[0012] [Figure 1] This figure shows the functional configuration of the design support system according to the first embodiment. [Figure 2] This is a flowchart illustrating a design support method using a design support system. [Figure 3]It is a flowchart of a design variable selection process performed by a design variable selection unit of a building in a design support system. [Figure 4] It is a diagram showing an example of dividing the floor and walls of a building into a plurality of regions. [Figure 5] It is a schematic diagram in which design allowances for equipment and piping are stored in each region of the floor and walls of a building. [Figure 6] It is a schematic diagram in which average values of design allowances are stored in each region of the floor and walls of a building. [Figure 7] It is a graph obtained by frequency analysis of the vibration response of a region. [Figure 8] It is a flowchart of a process in which an equipment and piping arrangement generation unit newly generates a plurality of equipment and piping arrangement plans. [Figure 9] It is a flowchart of a comprehensive evaluation method for design allowances and a selection method for arrangement plans. [Figure 10] It is a diagram showing the functional configuration of the design support system according to the second embodiment.

Mode for Carrying Out the Invention

[0013] Hereinafter, an example of a design support system for optimizing equipment and piping arrangement and building structure according to an embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the following examples. In each of the drawings described below, common members are denoted by the same reference numerals. In addition, in the drawings used in this specification, the same or corresponding components are denoted by the same reference numerals, and repeated description of these components may be omitted. Note that the description will be given in the following order. 1. First Embodiment of the Design Support System 2. Second Embodiment of the Design Support System

[0014] <1. First Embodiment of the Design Support System> Hereinafter, the first embodiment of the design support system will be described. The design support system of the present embodiment is for optimizing equipment, facilities such as piping arranged in a building, and the building structure. The configuration of the design support system will be described with reference to FIGS. 1 to 6.

[0015] [Configuration of the design support system] The functional configuration of the design support system of the first embodiment will be explained using Figure 1. The design support system 10 shown in Figure 1 includes a building database 100, an equipment / piping database 101, a building vibration evaluation unit 102, an equipment / piping vibration evaluation unit 103, a building evaluation result storage unit 104, an equipment / piping evaluation result storage unit 105, a design margin calculation unit 106, a building design variable selection unit 107, a building structure modification unit 108, an equipment / piping layout generation unit 109, and an optimization result output unit 110.

[0016] The design support system 10 uses methods such as the three-dimensional finite element method to perform vibration evaluation of the building structure. Then, using the results of the vibration evaluation of the building structure, the design support system 10 performs vibration evaluation of the equipment applied to the building and the equipment placed in the building, such as piping (hereinafter referred to as "equipment and piping"). Furthermore, using the results of the vibration evaluation of the building structure and the vibration evaluation of the equipment and piping, the design support system 10 optimizes the building structure and optimizes the placement of equipment and piping within the building structure. Furthermore, vibration evaluation of building structures using methods such as the 3D finite element method requires a significant amount of time compared to vibration evaluation of equipment and piping. Therefore, the design support system 10 applies vibration evaluation and optimization calculations for one or more equipment and piping layouts to the vibration evaluation and optimization calculations for one building structure design. In this process, one or more equipment and piping layouts are applied to one building structure design. As a result, the design support system 10 can efficiently optimize equipment and piping layouts based on vibration evaluations of one building structure. The design support system 10 can then use these optimized equipment and piping layouts to perform vibration evaluation and optimization calculations for other building structure designs. By repeating these processes, the design support system 10 can perform more efficient optimization calculations of building structures and equipment and piping layouts.

[0017] The building database 100 stores the initial conditions and constraints of the building structure. It also stores building structure proposals entered by users of the design support system 10, design variables for member elements (walls, floors, beams, etc.) in the building structure proposals, and data tables for these design variables. Furthermore, the building database 100 stores accumulated past optimization processing results. For example, the building database 100 stores building structure proposals, vibration evaluation results for those proposals, and data tables for member elements and design variables in the building structure proposals, along with the vibration evaluation results.

[0018] The equipment and piping database 101 stores the initial conditions and constraints for equipment and piping placement. It also stores information necessary for vibration evaluation, such as proposed equipment and piping placements, material properties and dimensions of the equipment and piping placements, and various data tables, entered by users of the design support system 10. Furthermore, the equipment and piping database 101 stores the design tolerance values ​​(allowable acceleration, allowable stress, etc.) for each piece of equipment and piping used by the design margin calculation unit 106. Furthermore, the equipment and piping database 101 stores the accumulated results of past optimization processing. For example, the equipment and piping database 101 stores the proposed equipment and piping layouts used in past optimization processing, as well as the proposed equipment and piping layouts generated by the equipment and piping layout generation unit 109. In addition, the equipment and piping database 101 stores data tables of various conditions such as material properties, dimensions, and constraints for the equipment and piping layouts in the stored various layout proposals.

[0019] Furthermore, the design support system 10 may also have a database containing information other than the building and equipment / piping mentioned above. For example, the design support system 10 may have a database containing information on stresses that the building and equipment / piping receive from external sources such as seismic waves. Furthermore, the design support system 10 may have a database containing stress analysis programs such as the 3D finite element method. However, the design support system 10 does not necessarily have to store stress analysis programs such as the 3D finite element method. For example, an external computing device connected via a communication unit (described later) may perform vibration evaluation and optimization calculations, and the design support system 10 may be configured to obtain the processing results from the external computing device.

[0020] The building vibration evaluation unit 102 performs vibration evaluation of the building structure by structural analysis using the three-dimensional finite element method, etc., based on the information stored in the building database 100. The building vibration evaluation unit 102 then outputs the vibration evaluation results of the building structure to the building evaluation result storage unit 104. Furthermore, when performing analysis processing calculations using the three-dimensional finite element method, etc., on an external computing device, the building vibration evaluation unit 102 outputs the information necessary for the calculations to the external computing device. The building vibration evaluation unit 102 then obtains the vibration evaluation results of the building structure from the external computing device. The building vibration evaluation unit 102 then outputs the obtained vibration evaluation results of the building structure to the building evaluation result storage unit 104. The building evaluation result storage unit 104 stores the vibration evaluation results of the building structure that are input from the building vibration evaluation unit 102.

[0021] The equipment and piping vibration evaluation unit 103 performs vibration evaluation of each piece of equipment and piping in the proposed building structure. The equipment and piping vibration evaluation unit 103 performs vibration evaluation using information stored in the equipment and piping database 101 and information on the building structure vibration evaluation results stored in the building evaluation result storage unit 104. The equipment and piping vibration evaluation unit 103 performs vibration evaluation of each piece of equipment and piping in the proposed building structure, for example, by structural analysis using the three-dimensional finite element method, and calculates the evaluation value of the vibration evaluation. The equipment and piping vibration evaluation unit 103 performs vibration evaluation of one or more equipment and piping layout proposals for a single building structure. It is preferable that the equipment and piping vibration evaluation unit 103 can perform vibration evaluation of two or more equipment and piping layout proposals for a single building structure. The equipment and piping vibration evaluation unit 103 then outputs the calculated evaluation value of each piece of equipment and piping to the equipment and piping evaluation result storage unit 105. Furthermore, when performing analysis calculations using the 3D finite element method or the like on an external computing device, the equipment / piping vibration evaluation unit 103 outputs the information necessary for the calculation to the external computing device. The equipment / piping vibration evaluation unit 103 then obtains the equipment / piping vibration evaluation results from the external computing device. The equipment / piping vibration evaluation unit 103 then outputs the obtained equipment / piping vibration evaluation results to the equipment / piping evaluation result storage unit 105. The equipment / piping evaluation result storage unit 105 stores the vibration evaluation of each piece of equipment / piping input from the equipment / piping vibration evaluation unit 103.

[0022] The design margin calculation unit 106 compares the calculation results of the equipment and piping vibration evaluation unit 103 stored in the equipment and piping evaluation result storage unit 105 with the design tolerance values ​​for each piece of equipment and piping stored in the equipment and piping database 101, and calculates the design margin for the equipment and piping. For example, the design margin calculation unit 106 calculates the design margin for the equipment and piping using the ratio of the design tolerance value to the evaluation value, which is the vibration evaluation result of the equipment and piping [design tolerance value / evaluation value]. The design margin calculation unit 106 also determines whether or not the optimization calculation by the design support system 10 can be completed.

[0023] The building design variable selection unit 107 uses the design margin calculated by the design margin calculation unit 106 to select the location of member elements in the building structure for which the design variables should be modified. The building design variable selection unit 107 divides the proposed building structure into multiple regions and calculates the design margin for equipment and piping for each divided region. The building design variable selection unit 107 then selects regions with small design margins as targets for vibration characteristic modification and performs frequency analysis on the vibration response of those regions. The building design variable selection unit 107 also selects vibration modes for the regions based on the results of the frequency analysis and obtains the mode shapes of the building from eigenvalue analysis of the building in the selected vibration modes. The building design variable selection unit 107 then selects the location of member elements in the building structure for which the design variables should be modified based on the obtained mode shapes. Furthermore, the building design variable selection unit 107 selects a design variable modification policy for the member elements for which the design variables have been selected, based on the mode shapes of the building obtained by eigenvalue analysis. For example, the building design variable selection unit 107 determines whether to increase or decrease member elements (walls, floors, beams, etc.), such as wall thickness, floor thickness, and the number of floor beams.

[0024] The building structure modification unit 108 modifies the design variables of the member elements selected by the building design variable selection unit 107. Then, the building structure modification unit 108 updates the structural analysis model used by the building vibration evaluation unit 102 using the modified design variables. For example, the building structure modification unit 108 obtains the modified values ​​of the design variables of the member elements selected by the building design variable selection unit 107 from the design variable data table stored in the building database 100. The building structure modification unit 108 obtains the modified values ​​of the design variables according to the modification policy determined by the building design variable selection unit 107. Then, the building structure modification unit 108 modifies the design variables of the member elements selected by the building design variable selection unit 107 using the obtained modified values ​​of the design variables. Furthermore, the building structure modification unit 108 modifies the design variables of the member elements of the structural analysis model used by the building vibration evaluation unit 102 and updates the structural analysis model.

[0025] The equipment and piping placement generation unit 109 generates multiple placement options (re-placement options) that serve as evaluation conditions for the equipment and piping vibration evaluation unit 103, based on the results of the design margin calculation unit 106. For example, the equipment and piping placement generation unit 109 generates one or more equipment and piping placement options using a genetic algorithm or other optimization methods. When using a genetic algorithm to generate placement options, the equipment and piping placement generation unit 109 reads and executes the genetic algorithm program. The equipment and piping placement generation unit 109 also reads the constraint conditions for the placement locations of equipment and piping stored in the equipment and piping database 101. Based on the design margin of each piece of equipment and piping calculated by the design margin calculation unit 106, the equipment and piping placement generation unit 109 selects a placement option based on the magnitude of the total design margin. For example, the equipment and piping placement generation unit 109 selects the placement option with the largest total design margin. If there is only one placement option for which a design margin has been calculated, that placement option is selected. The equipment and piping layout generation unit 109 then generates a new next-generation equipment and piping layout plan (re-layout plan) based on the selected layout plan. The equipment and piping layout generation unit 109 generates one or more new equipment and piping layout plans (re-layout plans) for a single building structure. It is preferable that the equipment and piping layout generation unit 109 generates two or more new equipment and piping layout plans (re-layout plans). The equipment and piping layout generation unit 109 outputs the generated next-generation layout plan to the equipment and piping vibration evaluation unit 103. The equipment and piping layout generation unit 109 also stores the generated next-generation layout plan in the equipment and piping database 101.

[0026] The optimization result output unit 110 displays the equipment and piping layout and building structure obtained by the optimization calculation to the designer. The optimization result output unit 110 displays the equipment and piping layout and building structure for which the optimization calculation has been determined to be complete by the design margin calculation unit 106 to the designer. The optimization result output unit 110 is composed of, for example, an output device such as a display device described later, and a control device for these devices. The optimization result output unit 110 converts the information output from the design margin calculation unit 106 into information for output to a display device or output device. Then, the optimization result output unit 110 outputs the information to the display device or the like using the converted information.

[0027] In the design support system 10, the building vibration evaluation unit 102, the equipment / piping vibration evaluation unit 103, the design margin calculation unit 106, the building design variable selection unit 107, the building structure modification unit 108, and the equipment / piping layout generation unit 109 are processed by a calculation unit (not shown). The calculation unit consists of, for example, a CPU (Central Processing Unit), ROM (Read Only Memory), and RAM (Random Access Memory). The CPU is an example of a calculation unit related to the design support system 10. The CPU centrally controls the operation of each part of the design support system 10. The CPU reads the program code of the software related to various processes of the design support system 10 stored in ROM (an example of a recording medium) and expands it into RAM. Then, the CPU controls the design support system 10 according to the expanded program. The design support system 10 may also be equipped with other computing devices such as an MPU (Micro Processing Unit) as a calculation unit instead of a CPU.

[0028] Furthermore, the building database 100, the equipment / piping database 101, the building evaluation result storage unit 104, and the equipment / piping evaluation result storage unit 105 are composed of storage media (not shown). The storage media are composed of known storage devices such as HDDs (Hard Disk Drives) and semiconductor memory. The storage media stores various information used by the arithmetic unit for calculations, and the calculation results performed by the arithmetic unit.

[0029] The optimization result output unit 110 is comprised of an output device (not shown). The output unit is comprised of, for example, a display device such as a display or an audio output device, and a control device for this output device.

[0030] Furthermore, the design support system 10 may include a communication unit for sending and receiving information with external devices. The communication unit may consist of an input unit and an output unit, for example, a communication interface. The communication interface may consist of a NIC (Network Interface Card) or a modem, and establishes a connection with the communication partner device via a network such as a LAN, and performs the sending and receiving of various data. The design support system 10 may also be connected to other computing devices via the communication interface to send and receive information.

[0031] [flowchart] Figure 2 shows a flowchart of the design support method using the design support system 10 described above. In the design support method shown in Figure 2, the design support system 10 performs optimization calculations of equipment / piping layout and building structure using stress analysis methods such as the three-dimensional finite element method. Note that vibration evaluation of the building structure using the three-dimensional finite element method requires more time than vibration evaluation of equipment / piping. Therefore, in the flowchart of the design support method shown in Figure 2, vibration evaluation is performed for one building structure proposal and one or more equipment / piping layout proposals applied to this one building structure proposal within one loop of the optimization calculation from steps S101 to S107.

[0032] First, the building database 100 and the equipment / piping database 101 of the design support system 10 store the building structure plan, equipment / piping layout plan, initial conditions for the building structure, and initial conditions for the equipment / piping, etc., which are input by the user via an input device, etc. (step S100). It is preferable that the design support system 10 stores one building structure plan and one or more equipment / piping layout plans in the building database 100 and the equipment / piping database 101. In particular, it is preferable that the design support system 10 stores two or more equipment / piping layout plans for one building structure plan.

[0033] Next, the building vibration evaluation unit 102 evaluates the vibrations at each location of the floor and walls of the building where equipment and piping are placed in the proposed building structure (step S101). The building vibration evaluation unit 102 retrieves the proposed building structure and initial conditions stored in the building database 100, and uses a stress analysis method such as the three-dimensional finite element method to calculate evaluation values ​​(acceleration time history waveform, maximum acceleration, etc.) of the vibrations at each location of the floor and walls of the proposed building structure. The building vibration evaluation unit 102 also stores the calculated evaluation values ​​of the vibrations at each location of the floor and walls of the building in the building evaluation result storage unit 104.

[0034] Next, the equipment and piping vibration evaluation unit 103 evaluates the vibration of the equipment and piping in the proposed equipment and piping layout (step S102). The equipment and piping vibration evaluation unit 103 obtains the equipment and piping layout conditions stored in the equipment and piping database 101. The equipment and piping vibration evaluation unit 103 also obtains the evaluation values ​​of the vibration evaluation results of the building structure at each equipment and piping layout location, calculated by the building vibration evaluation unit 102 in step S101, from the building evaluation result storage unit 104. The equipment and piping vibration evaluation unit 103 uses the evaluation values ​​of the building vibration obtained from the building evaluation result storage unit 104 as input conditions for structural analysis and evaluation formulas. Then, the equipment and piping vibration evaluation unit 103 calculates the evaluation values ​​of the equipment and piping vibration when the equipment and piping layout is applied to the building structure proposal using a stress analysis method such as the three-dimensional finite element method. Furthermore, the equipment and piping vibration evaluation unit 103 stores the calculated equipment and piping vibration evaluation values ​​in the equipment and piping evaluation result storage unit 105. Here, if there is only one equipment and piping layout plan obtained from the equipment and piping database 101, the equipment and piping vibration evaluation unit 103 applies that one equipment and piping layout plan to the building structure plan and calculates the vibration evaluation value for the equipment and piping. If there are multiple equipment and piping layout plans obtained from the equipment and piping database 101, the equipment and piping vibration evaluation unit 103 applies the multiple equipment and piping layout plans to the building structure plan and calculates the vibration evaluation value for the equipment and piping for each layout plan.

[0035] Alternatively, before starting the optimization calculations of the design support system 10, the structural analysis of the equipment can be performed and the allowable acceleration at the installation location can be calculated using formula (1), thereby omitting the structural analysis of the equipment in step S102.

[0036]

number

[0037] However, in the above formula (1), a Limit : Allowable acceleration of the equipment, a nalysis : Input acceleration from the building used in structural analysis, σ Limit : Allowable stress of the equipment, σ Analysis Stress generated by the equipment in structural analysis

[0038] Next, the design margin calculation unit 106 calculates the design margin for equipment and piping in the proposed layout based on the evaluation values ​​of the vibration of equipment and piping stored in the equipment and piping evaluation result storage unit 105 (step S103). The design margin calculation unit 106 obtains the evaluation values ​​of the vibration of equipment and piping from the equipment and piping evaluation result storage unit 105 and compares the evaluation values ​​of the equipment and piping in the proposed layout with the design allowable values ​​of each piece of equipment and piping. Then, the design margin calculation unit 106 calculates the set margin for equipment and piping using the formula [design margin = design allowable value / evaluation value] (step S103).

[0039] Next, the design margin calculation unit 106 determines whether the calculated design margin satisfies the predetermined design margin value for equipment and piping in the termination conditions (step S104). The design margin calculation unit 106 may also determine whether the design margin of the building satisfies the predetermined determination value as a termination condition, in addition to the design margin of equipment and piping. If the determination value for the termination conditions is met for the building, and if the termination conditions are not met, the same processing is carried out as for the subsequent cases where the termination conditions for the design margin of equipment and piping are met, and if the termination conditions are not met.

[0040] If the termination conditions are not met (NO in step S104), the building design variable selection unit 107 selects design variables for the building structure based on the design margins of multiple layout options calculated by the design margin calculation unit 106 (step S105). A detailed flowchart of the design variable selection process by the building design variable selection unit 107 in step S105 is shown in Figure 3.

[0041] First, the building design variable selection unit 107 divides the building's floor and walls into multiple regions (step S200). An example of dividing the building's floor and walls into multiple regions is shown in Figure 4. As shown in Figure 4, the building design variable selection unit 107 divides the building's walls 11 and floor 12 into multiple regions (region i, region ii, etc.). The coordinates of the placement positions of equipment and piping differ depending on the placement plan. Therefore, for each divided region, the building design variable selection unit 107 evaluates the design margins of one or more equipment and piping placement plans calculated by the design margin calculation unit 106.

[0042] Next, the building design variable selection unit 107 stores the design margins for equipment and piping to be installed in each area of ​​the building's floor and walls for each equipment and piping layout (area i, area ii, etc.) in each area (area i, area ii, etc.) (step S201). Figure 5 shows a schematic diagram in which the design margins for equipment and piping are stored in each area of ​​the building's floor and walls. In the schematic diagram shown in Figure 5, each area of ​​either the wall 11 or the floor 12 is shown as an example. As shown in Figure 5, the building design variable selection unit 107 stores the design margins for each equipment and piping layout calculated by the design margin calculation unit 106 in each area of ​​the building's floor and walls. Figure 5 shows the state in which the design margins for one equipment and piping layout are stored in each area of ​​the building's wall or floor. The building design variable selection unit 107 similarly stores the design margins in each area of ​​the building's floor and walls for multiple equipment and piping layouts (layout A, layout B, layout C, etc.). Therefore, the building design variable selection unit 107 generates information on the floors and walls of the building, with design margins similar to those in Figure 5 stored in each area, for each of the equipment and piping layout options (layout option A, layout option B, layout option C, etc.). Furthermore, in the building's design variable selection unit 107, if multiple pieces of equipment and piping are included in one area in the proposed equipment and piping layout, the unit stores the value with the smallest design margin in that area. In addition, if a single piece of equipment or piping spans multiple areas, the building's design variable selection unit 107 stores the design margin of the equipment or piping in one or more areas, in descending order of vibration magnitude. The ranking of vibration magnitudes in the areas is determined by factors such as the magnitude of the maximum acceleration and the magnitude of the response spectrum at the natural frequencies of the equipment and piping.

[0043] Next, the building's design variable selection unit 107 calculates the average value of the design margins for all layout options stored in each area and sets it as the design margin for each area in each layout option (step S202). Figure 6 shows a schematic diagram in which the average value of the design margins is stored in each area of ​​the building's floor and walls. In the schematic diagram shown in Figure 6, each area is illustrated as an example of either the wall 11 or the floor 12. As shown in Figure 6, the building's design variable selection unit 107 calculates the average value of the design margins stored in each area of ​​the building's floor and walls for all layout options. In Figure 6, the average value of the design margins for all layout options is stored in each area of ​​the building's floor or walls. Note that in this process, the average value of the design margins for each area may not be a simple average, but rather an average value weighted according to the ranking of each layout option based on the design margin.

[0044] Next, the building's design variable selection unit 107 selects the region with the smallest average value of the stored design margins as the region to be modified for vibration characteristics (step S203). In the example shown in Figure 6, the building's design variable selection unit 107 selects region 13, which has the smallest average value of the design margins, as the region to be modified for vibration characteristics. Note that the regions selected by the building's design variable selection unit 107 may be 1 or more, in order of increasing average value of the design margins. Next, the building design variable selection unit 107 performs a frequency analysis on the vibration response of the region selected as the target for modification in step S203 (step S204).

[0045] Next, the building design variable selection unit 107 selects the vibration mode of the region selected for modification based on the results of the frequency analysis in step S204 (step S205). The building design variable selection unit 107 selects the vibration mode according to the type of equipment and piping placed in the selected region. For example, the building design variable selection unit 107 selects a vibration mode by comparing the natural frequencies of equipment and piping placed in the selected area with the vibration frequency bands in each area of ​​the building. Figure 7 shows a graph of the frequency analysis results. The graph in Figure 7 shows the results of the frequency analysis of the acceleration time history waveform of the building, with the horizontal axis representing the natural period and the vertical axis representing the acceleration response. If the natural frequencies of the equipment and piping are higher than the vibration frequency bands in each region of the building, i.e., if the equipment and piping are rigid structures, the building design variable selection unit 107 selects the most dominant building vibration mode to be modified. As shown in Figure 7, the building design variable selection unit 107 selects the location of the peak 14 with the most dominant acceleration response as the vibration mode to be improved. Furthermore, if the natural frequency of the equipment and piping is close to the frequency band of the building's vibration, i.e., if the equipment and piping have a flexible structure, the building's vibration mode closest to the natural frequency that contributes most to the stress of the equipment and piping is selected.

[0046] Next, the building design variable selection unit 107 performs eigenvalue analysis of the building and obtains the mode shape of the building in the selected vibration mode (step S206). Next, the building design variable selection unit 107 selects the design variables to be modified in the building structure (step S207). Based on the mode shape acquired in the selected vibration mode, the building design variable selection unit 107 selects the design variables to be modified in the building structure based on the degree of influence of this vibration mode. Specifically, the building design variable selection unit 107 calculates the degree of influence on the building according to the magnitude of the deformation in the mode shape, and selects the wall thickness, floor thickness, and number of floor beams in the areas with large deformation (degree of influence) as the design variables to be modified. After the above processing, the processing of the flowchart shown in Figure 3 is completed.

[0047] Next, returning to the flowchart shown in Figure 2, the building structure modification unit 108 modifies the design variables selected by the building design variable selection unit 107 in step S105, thereby modifying the initial building structure plan (step S106). The building structure modification unit 108 obtains the modified values ​​of the design variables to be modified, selected by the building design variable selection unit 107, from the design variable data table stored in the building database 100. Then, the building structure modification unit 108 modifies the initial building structure plan using the obtained modified values. In addition, the building structure modification unit 108 updates the structural analysis model by modifying the design variables of the building structure plan. This structural analysis model is used by the building vibration evaluation unit 102 to re-evaluate the vibration of the building structure when the process in step S101 is executed again.

[0048] Next, the equipment and piping layout generation unit 109 generates one or more new equipment and piping layout plans (step S107). The equipment and piping layout plans generated by the equipment and piping layout generation unit 109 become the conditions for the equipment and piping vibration evaluation unit 103 to re-evaluate the vibration of the equipment and piping in step S102. A detailed flowchart of the process in step S107 is shown in Figure 8. The flowchart shown in Figure 8 illustrates the process by which the equipment and piping layout generation unit 109 generates equipment and piping layout plans using a genetic algorithm.

[0049] First, the equipment and piping layout generation unit 109 uses the design margins of each piece of equipment and piping calculated by the design margin calculation unit 106 to calculate a total value of the design margins of all equipment and piping, and selects the layout plan with the largest total value (step S300). Figure 9 shows a detailed flowchart of the overall evaluation method of the design margins and the method of selecting the layout plan in step S300.

[0050] First, the equipment and piping layout generation unit 109 calculates the design margin M for each piece of equipment and piping from the design margin calculation unit 106. i [M i Obtain the [design tolerance value / evaluation value] (step S400). Next, the equipment and piping arrangement generation unit 109 calculates a comprehensive value of design margin for each arrangement plan using any one of the following [1] to [3] (step S401). In subsequent processing, the equipment and piping arrangement generation unit 109 uses the calculated comprehensive value of design margin as an evaluation index for the genetic algorithm. [1] The number of equipment and piping whose design margin exceeds 1 [2] Minimum value M of design margin for all equipment and piping min M min =min[(M1, M2, ... M N )] Here, N is the total number of equipment and piping. [3] Average value M of design margin weighted by the importance of each equipment and piping using the following formula (2) AVE

[0051] [Mathematics]

[0052] Next, the equipment and piping arrangement generation unit 109 selects an arrangement plan having a large calculated comprehensive value of design margin (step S402). The equipment and piping arrangement generation unit 109 replaces the previous generation arrangement plan with the selected arrangement plan having a large comprehensive value of design margin, and newly generates a next-generation equipment and piping arrangement plan. At this time, the equipment and piping arrangement generation unit 109 may select a plurality of arrangement plans in descending order of the comprehensive value of design margin. When a plurality of equipment and piping arrangement plans are selected, the equipment and piping arrangement generation unit 109 generates a plurality of next-generation equipment and piping arrangement plans using each equipment and piping arrangement plan. After the above processing, the processing of the flowchart shown in FIG. 9 is terminated. Note that the evaluation index of the genetic algorithm may be an evaluation index that takes into account physical quantity and constructability in addition to vibration.

[0053] Next, returning to the flowchart shown in Figure 8, the equipment and piping layout generation unit 109 reads the constraint conditions for the placement of equipment and piping stored in the equipment and piping database 101 and sets the constraint conditions for the placement of equipment and piping in the proposed equipment and piping layout (step S301). Alternatively, the equipment and piping layout generation unit 109 may set constraint conditions for the placement of equipment and piping in the proposed equipment and piping layout with newly added conditions based on the vibration evaluation results of the equipment and piping.

[0054] Next, the equipment and piping arrangement generation unit 109 generates a next-generation equipment and piping arrangement plan by crossing over and mutating the arrangement plan selected in step S300 (step S302). For example, the equipment and piping arrangement generation unit 109 crosses over the gene sequence for the equipment and piping arrangement order and other gene sequences (orientation, gaps, placement position) at a predetermined crossing rate. The equipment and piping arrangement generation unit 109 also mutates the gene sequence for the equipment and piping arrangement order and other gene sequences (orientation, gaps, placement position) at a predetermined mutation rate. The equipment and piping arrangement generation unit 109 generates a next-generation equipment and piping arrangement plan by performing either the above crossing or mutation at least once.

[0055] Next, the equipment and piping layout generation unit 109 outputs the generated next-generation equipment and piping layout plan to the equipment and piping vibration evaluation unit 103 (step S303). The equipment and piping layout generation unit 109 also stores the generated next-generation equipment and piping layout plan in the equipment and piping database 101. After the above processing, the flowchart shown in Figure 8 is terminated. Note that the generation of equipment and piping layout plans by the equipment and piping layout generation unit 109 is not limited to a genetic algorithm, but may be performed using other optimization methods.

[0056] Next, returning to the flowchart shown in Figure 2, the equipment and piping vibration evaluation unit 103 again performs vibration evaluation of each location on the floor and walls of the building where the equipment and piping will be placed (step S101), and vibration evaluation of the equipment and piping in each arrangement (step S102). This process is carried out using the building structure plan modified in step S106 and the next generation equipment and piping arrangement plan generated in step S107. If multiple equipment and piping arrangement plans are generated in step S107, then in step S102, vibration evaluation of the equipment and piping is performed for one building structure plan using multiple equipment and piping arrangement plans. From this point onward, the processes described in steps S101 through S107 are repeatedly executed until the termination condition is met in step S104.

[0057] If the termination conditions are met (YES in step S104), the optimization result output unit 110 outputs the equipment and piping layout and building structure obtained by the optimization calculation (step S108). The optimization result output unit 110 outputs the equipment and piping layout and building structure to a display device or the like and displays them to the user of the design support system 10. After the above processing, the flowchart shown in Figure 2 is terminated.

[0058] In the flowchart shown in Figure 2 above, the vibration evaluation of equipment and piping in step S102 may be performed concurrently with the building vibration evaluation in step S101. Similarly, the generation of equipment and piping layout proposals in step S107 may be performed concurrently with the selection of building structure design variables in step S105 and the modification of the building structure proposal in step S106.

[0059] According to the design support system 10 and design support method described above, it is possible to automatically optimize the building structure and equipment / piping layout by considering the vibrations of the building structure and equipment / piping. Furthermore, in the automatic optimization of the building structure and equipment / piping layout in response to vibrations, it is possible to select the design variables of the building structure by considering the overall trend of the layout options by averaging the design margins of multiple layout options. As a result, the optimization process is made more efficient, enabling the exploration of building structures and the optimization of equipment / piping layouts with fewer trials. Consequently, it becomes possible to derive a highly safe building structure and equipment / piping layout in a short amount of time. Furthermore, the design support system 10 and the design support method enable the design of equipment and piping layouts without relying on the experience and knowledge of skilled designers, thereby reducing design costs through the automatic optimization of building structure and equipment / piping layout. In addition, by considering the vibration of equipment and piping in relation to the building structure, safety can be improved and material costs can be reduced.

[0060] <2. Second Embodiment of the Design Support System> Next, a second embodiment of the design support system will be described. Note that detailed explanations of the configurations in the second embodiment of the design support system, which are the same as those in the first embodiment described above, will be omitted.

[0061] Figure 10 shows the functional configuration of the design support system of the second embodiment. The design support system 20 shown in Figure 10 includes a vibration evaluation unit 103 for equipment and piping, a building evaluation result storage unit 104, an equipment and piping evaluation result storage unit 105, a design margin calculation unit 106, an optimization result output unit 110, an equipment and piping layout proposal storage unit 111, and a building and equipment / piping combination unit 112.

[0062] The design support system 20 shown in Figure 10 uses a combination of building structure proposals and equipment / piping layout proposals accumulated through past optimization calculations as conditions for evaluating the vibration of equipment and piping. Based on the vibration evaluation of equipment and piping, the design support system 20 presents the optimal combination of building structure proposals and equipment / piping layout proposals. Therefore, the design support system 20 shown in Figure 10 has some functions added to the design support system 10 shown in Figure 1. Alternatively, the design support system 20 may be configured independently by acquiring information in advance from the building database 100 and equipment / piping database 101 of the design support system 10 shown in Figure 1. According to the configuration of the design support system 20 shown in Figure 10, some functions from the design support system 10 shown in Figure 1 are omitted and consolidated, enabling more efficient automatic optimization of building structure and equipment / piping layout. Furthermore, the same processing as in the first embodiment described above can be applied to the details of the design support method using the design support system 20. For this reason, a detailed explanation of the flowchart for the design support method using the design support system 20 will be omitted.

[0063] In the design support system 20 shown in Figure 10, the equipment / piping vibration evaluation unit 103, the building evaluation result storage unit 104, the equipment / piping evaluation result storage unit 105, the design margin calculation units 106, 2, and the optimization result output unit 110 have the same functions as the design support system 10 of the first embodiment shown in Figure 1 above.

[0064] The building evaluation result storage unit 104 of the design support system 20 stores multiple vibration evaluation results for building structures calculated by the building vibration evaluation unit 102 (Figure 1) in past calculations to optimize equipment and piping layouts and building structures.

[0065] The equipment and piping layout plan storage unit 111 stores the placement positions of equipment and piping in each layout plan. The equipment and piping layout plan storage unit 111 retrieves and stores equipment and piping layout plans stored in the equipment and piping database 101 (Figure 1). The equipment and piping layout plans retrieved by the equipment and piping layout plan storage unit 111 include, for example, equipment and piping layout plans entered as initial conditions for each optimization calculation. In addition, the equipment and piping layout plans retrieved by the equipment and piping layout plan storage unit 111 include rearrangement plans for equipment and piping generated by the equipment and piping layout generation unit 109 (Figure 1) for each optimization calculation.

[0066] The building and equipment / piping combination unit 112 reads out the vibration evaluation results of the building structure accumulated from past optimization calculations stored in the building evaluation result storage unit 104, and the equipment / piping layout plans accumulated from past optimization calculations stored in the equipment / piping layout plan storage unit 111. Then, the building and equipment / piping combination unit 112 selects a combination of building structure plan and equipment / piping layout plan from the read-out vibration evaluation results of the building structure and equipment / piping layout plans. Here, the combination of building structure plan and equipment / piping layout plan is one or more equipment / piping layout plans selected for one building structure plan. Then, the building and equipment / piping combination unit 112 outputs the vibration evaluation results of the selected building structure plan and the equipment / piping layout positions of the selected equipment / piping layout plan to the equipment / piping vibration evaluation unit 103.

[0067] This section describes how the building structure design and equipment / piping layout design are selected by the building and equipment / piping combination section 112. The building and equipment / piping combination section 112 selects the combination of building structure design and equipment / piping layout design according to the combinations with the highest priority listed below. In this case, it is preferable for the building and equipment / piping combination section 112 to select a combination in which vibration evaluation of the equipment / piping has not been conducted in the past. Priority - High: A combination of a newly added building structure plan and a high-rated equipment / piping layout plan, or a high-rated building structure plan and a newly added equipment / piping layout plan. Priority - Medium: A combination of a building structure plan with a high evaluation score and a layout plan for equipment and piping with a high evaluation score. Low priority: Combinations that do not fall under "High priority" or "Medium priority".

[0068] The equipment and piping vibration evaluation unit 103 performs vibration evaluation of each piece of equipment and piping in the combination of the building structure plan and the equipment and piping layout plan selected by the building and equipment / piping combination unit 112. At this time, the equipment and piping vibration evaluation unit 103 performs vibration evaluation of the equipment and piping using structural analysis with the three-dimensional finite element method, based on the vibration evaluation result information of the building structure plan stored in the building evaluation result storage unit 104, and calculates the evaluation value. The equipment and piping vibration evaluation unit 103 then outputs the calculated equipment and piping vibration evaluation value to the equipment and piping evaluation result storage unit 105. The equipment / piping evaluation result storage unit 105 stores the vibration evaluation of each piece of equipment / piping input from the equipment / piping vibration evaluation unit 103.

[0069] The design margin calculation unit 106 compares the calculation results of the vibration evaluation unit for equipment and piping stored in the equipment and piping evaluation result storage unit 105 with the design tolerance values ​​for each piece of equipment and piping stored in the equipment and piping database 101, and calculates the design margin for each piece of equipment and piping. The evaluation value for the equipment and piping layout in the building structure plan preferably uses the total value of the design margins for all equipment and piping, similar to the first embodiment described above. Furthermore, the design margin calculation unit 106 determines whether or not the optimization calculation by the design support system 20 can be completed.

[0070] The design support system 20 and design support method described above provide the same effects as the design support system 10 and design support method using the first embodiment described above. Furthermore, the design support system 20 and design support method utilize accumulated vibration evaluation results of past building structure proposals and previously generated equipment and piping layout proposals. This reduces the processing required for vibration evaluation of new building structure proposals and the generation of new equipment and piping layout proposals. Consequently, the design support system 20 and design support method enable more efficient automatic optimization of building structures and equipment and piping layouts, allowing for the derivation of safer building structures and equipment and piping layouts in a shorter time.

[0071] It should be noted that the present invention is not limited to the embodiments described above, and various modifications are possible. For example, the embodiments described above are explained in detail to make the present invention easier to understand, and the present invention is not necessarily limited to embodiments that have all the described configurations. Furthermore, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment. It is also possible to add the configuration of another embodiment to the configuration of one embodiment. Furthermore, it is possible to delete or add / replace parts of the configuration of each embodiment. [Explanation of Symbols]

[0072] 10,20 Design support system, 11 Walls, 12 Floors, 13 Areas, 14 Peaks, 100 Building database, 101 Equipment / piping database, 102 Building vibration evaluation unit, 103 Equipment / piping vibration evaluation unit, 104 Building evaluation result storage unit, 105 Equipment / piping evaluation result storage unit, 106 Design margin calculation unit, 107 Building design variable selection unit, 108 Building structural modification unit, 109 Equipment / piping layout generation unit, 110 Optimization result output unit, 111 Equipment / piping layout proposal storage unit, 112 Building and equipment / piping combination unit

Claims

1. A design support system that performs calculations to optimize building structure and equipment / piping layout, A building vibration evaluation unit for performing vibration evaluation of the aforementioned building structure, A vibration evaluation unit for equipment and piping performs vibration evaluation of equipment and piping in the building structure using information from the vibration evaluation results of the building structure, A design margin calculation unit that calculates the design margin for the equipment and piping in the proposed arrangement of the equipment and piping, Based on the design margin calculated by the design margin calculation unit, a building design variable selection unit selects member elements in the building structure that modify the design variables, The system includes an equipment and piping layout generation unit that generates a new layout plan for the next generation of equipment and piping based on the design margin calculated by the design margin calculation unit. Design support system.

2. The building design variable selection unit divides the building into multiple regions and calculates the design margin for multiple layout options for each region. Based on the calculated design margin for each region, select the region whose vibration characteristics are to be changed. The vibration response of the selected region is subjected to frequency analysis. Based on the results of the frequency analysis, select the vibration mode of the region to be modified. Select member elements in the building structure that modify design variables based on their influence on the selected vibration mode. The design support system according to claim 1.

3. The vibration evaluation unit for the equipment and piping performs vibration evaluation of one or more proposed arrangements of the equipment and piping for a single building structure. The design support system according to claim 1.

4. The building includes a structural modification unit that modifies the design variables of the member elements selected by the building's design variable selection unit and updates the building's structural analysis model. The design support system according to claim 1.

5. The aforementioned equipment and piping layout generation unit generates one or more equipment and piping layout options using a genetic algorithm. The design support system according to claim 1.

6. The equipment and piping arrangement generation unit calculates the total value of the design margins for the proposed equipment and piping arrangements based on the design margins of the equipment and piping calculated by the design margin calculation unit. Select a layout plan that has a large overall value of the aforementioned design margin. The selected layout plan with the largest overall design margin is subjected to at least one crossover and / or mutation to generate a next-generation equipment and piping layout plan. The design support system according to claim 5.

7. The equipment and piping layout generation unit calculates the total value of the design margin for the proposed equipment and piping layout using any of the following [1] to [3]. [1] The number of equipment and piping for which the design margin exceeds 1 [2] The minimum value M of the design margin for the equipment and piping. ｍｉｎ [3] The average value M of the design margin for the equipment and piping. ＡＶＥ The design support system according to claim 6.

8. A design support system that performs calculations to optimize building structure and equipment / piping layout, A building evaluation result storage unit that stores the results of the vibration evaluation of the aforementioned building structure, A storage unit for equipment and piping layout plans, where equipment and piping layout plans are stored, A building and equipment / piping combination unit selects a combination of the building structure and the equipment / piping arrangement based on the vibration evaluation results of the building structure stored in the evaluation result storage unit and the equipment / piping arrangement plan stored in the equipment / piping arrangement plan storage unit. In the combination selected by the building and equipment / piping combination unit, the equipment / piping vibration evaluation unit performs vibration evaluation of the equipment / piping in the building structure, The system includes a design margin calculation unit that calculates the design margin for the equipment and piping in the proposed arrangement of the equipment and piping. Design support system.

9. Based on the proposed building structure, a vibration evaluation of the building structure was conducted. Based on the results of the vibration evaluation of the building structure, the vibration evaluation of the equipment and piping in the proposed arrangement of equipment and piping relative to the building structure is performed. The design margin for the equipment and piping in the proposed layout of the equipment and piping is calculated, Based on the calculated design margin, select the member elements in the building structure that modify the design variables. Based on the calculated design margin, a new layout plan for the equipment and piping is generated. Design support method.

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